plug base

Abstract

The present application relates to the field of low-voltage electrical apparatus, in particular to a plug-in base, wherein a meter connection terminal group and an outgoing line switch connection terminal group are arranged one by one and are connected in series in the same electric circuit; the meter connection terminal group is arranged at a meter position and comprises an outgoing line connection terminal of the meter, which is used for one-to-one plug-in electrical connection with an outgoing line terminal of the electric energy meter; the outgoing line switch connection terminal group is arranged at an outgoing line switch position, each connection terminal of the outgoing line switch connection terminal group is used for plug-in electrical connection with each terminal of the outgoing line switch, and the outgoing line switch connection terminal group is also used for electrical connection with an outgoing line external conductor; the plug-in base is applied to a metering box, and significantly improves the assembly efficiency of the plug-in base and the electrical apparatus and facilitates maintenance.

Description

Technical Field

[0001] This invention relates to the field of low-voltage electrical appliances, and more specifically to a plug-in base. Background Technology

[0002] Existing metering boxes typically include an electricity meter, an incoming line switch, an outgoing line switch, and a control module. Some metering boxes may also include additional expansion modules for functional purposes. These electrical devices within the metering box require electrical connections, which are currently achieved primarily through wires and bolts. Therefore, existing metering boxes suffer from the following problems: 1. Numerous wire connection points, making maintenance inconvenient. 2. Unreliable wire connections, prone to loose connections and incorrect connections. 3. Maintenance can easily lead to prolonged power outages and large power outage areas. Summary of the Invention

[0003] The purpose of this invention is to overcome at least one defect of the prior art and provide a plug-in base that can be used in metering boxes, which significantly improves the assembly efficiency of the plug-in base and electrical devices and facilitates maintenance.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A plug-in base includes a base unit, the number of base units being ≥1. The base unit includes a base and a terminal group fixedly disposed relative to the base. The base includes a mounting position group disposed thereon. The mounting position group includes a meter position for installing an energy meter and an outgoing switch position for installing an outgoing switch, which are disposed in a one-to-one correspondence. The meter position and the outgoing switch position are arranged side by side along direction d3.

[0006] The terminal group further includes a meter connection terminal group and an outgoing switch connection terminal group, which are arranged one-to-one and connected in series in the same electrical circuit. The meter connection terminal group is located at the meter position and includes a meter outgoing connection terminal, which is used to connect to the outgoing wiring terminal of the energy meter one-to-one. The outgoing switch connection terminal group is located at the outgoing switch position, and each connection terminal of the outgoing switch connection terminal group is used to connect to each wiring terminal of the outgoing switch. The outgoing switch connection terminal group is also used to connect to the outgoing external conductor.

[0007] Furthermore, the outgoing switch connection terminal group includes an outgoing switch first connection terminal and an outgoing switch second connection terminal. The outgoing switch first connection terminal is used for one-to-one plug-in electrical connection with the incoming terminal of the outgoing switch, and the outgoing switch second connection terminal is used for one-to-one plug-in electrical connection with the outgoing terminal of the outgoing switch. The outgoing switch first connection terminal is also electrically connected to the outgoing terminal of the meter, and the outgoing switch second connection terminal is also used for electrical connection with the outgoing external conductor.

[0008] Furthermore, the terminal group also includes an outgoing side connection terminal group fixedly mounted on the base; the outgoing side connection terminal group serves as an outgoing switch connection terminal group, and includes an outgoing side first connection terminal serving as a first connection terminal of the outgoing switch and an outgoing side second connection terminal serving as a second connection terminal of the outgoing switch.

[0009] Furthermore, the terminal group also includes a cable-out side connection terminal group fixedly mounted on the base, the cable-out side connection terminal group including a cable-out side first connection terminal and a cable-out side second connection terminal that are configured in a one-to-one correspondence.

[0010] The base unit also includes a sampling device disposed within the outgoing switch position. The sampling device includes a sampling device housing, a sampling circuit board disposed within the sampling device housing, a sampling element, and a sampling device wiring structure. The sampling device wiring structure includes a first front connection terminal group and a first rear connection terminal group connected in series, as well as a second front connection terminal group and a second rear connection terminal group connected in series. The first front connection terminal group and the second front connection terminal group serve as outgoing switch connection terminal groups. Each connection terminal of the first front connection terminal group is used for one-to-one plug-in electrical connection with each incoming terminal of the outgoing switch. Each connection terminal of the second front connection terminal group is used for one-to-one plug-in electrical connection with each outgoing terminal of the outgoing switch. Each connection terminal of the first rear connection terminal group is one-to-one plug-in electrical connection with each outgoing side first connection terminal, and each connection terminal of the second rear connection terminal group is one-to-one plug-in electrical connection with each outgoing side second connection terminal.

[0011] Furthermore, the sampling element includes at least one of a current sampling element, a residual current transformer, a temperature sensor, and a voltage sensor; each of the current sampling elements is used to collect the current of each phase of the electrical circuit; each of the voltage sensors is used to collect the voltage of each phase of the electrical circuit; the residual current transformer is used to determine whether there is residual current in the electrical circuit; and the temperature sensor is used to collect the temperature of the environment where the plug-in base is located and / or the temperature of at least some of the connected terminals of the terminal group.

[0012] Furthermore, the meter output connection terminals are arranged side by side with intervals along direction d1, the first connection terminals on each output side are arranged side by side with intervals along direction d1, and the second connection terminals on each output side are arranged side by side with intervals along direction d1. The first connection terminals and the second connection terminals on the output side are located on one side of the meter connection terminal group in direction d3.

[0013] The directions d1 and d3 are perpendicular to each other.

[0014] Furthermore, the base unit also includes a third copper busbar disposed within the base, with the third copper busbar, the meter output connection terminal, and the output side first connection terminal being disposed in a corresponding manner; one end of the third copper busbar is connected and electrically connected to the corresponding meter output connection terminal, and the other end of the third copper busbar serves as the output side first connection terminal.

[0015] Furthermore, the third copper busbar includes a first section, a middle section, and a tail section connected in sequence. The first section of the third copper busbar is connected and electrically connected to the corresponding meter output terminal, and the tail section of the third copper busbar serves as the first connection terminal on the corresponding output side.

[0016] Furthermore, the meter connection terminal group also includes a meter inlet connection terminal; the meter inlet connection terminal is used for one-to-one plug-in electrical connection with the inlet wiring terminal of the energy meter, and the meter inlet connection terminal is also used for electrical connection with the external conductor of the inlet line through the inlet switch.

[0017] Furthermore, the terminal group also includes an incoming switch connection terminal group, the incoming switch connection terminal group, the meter connection terminal group and the outgoing switch connection terminal group are connected in series in the same electrical circuit, the incoming switch connection terminal group includes an incoming switch second connection terminal, the incoming switch second connection terminal is used for one-to-one plug-in electrical connection with the outgoing terminal of the incoming switch.

[0018] Furthermore, the terminal group also includes an input-side connection terminal group fixedly mounted on the base and serving as an input switch connection terminal group; the input-side connection terminal group includes an input-side second connection terminal serving as a second connection terminal of the input switch.

[0019] Furthermore, in the base unit, the meter inlet connection terminals are arranged side by side with intervals along direction d1, the meter inlet connection terminals and the meter outlet connection terminals are arranged alternately along direction d1, the inlet side second connection terminals are arranged side by side with intervals along direction d1, the inlet side second connection terminals and the outlet side first connection terminals are located on one side of the meter connection terminal group in direction d3, and all inlet side second connection terminals and outlet side connection terminal groups are arranged sequentially along direction d1.

[0020] Furthermore, the base unit also includes a second copper busbar disposed within the base. The second copper busbar, the meter inlet connection terminal, and the inlet-side second connection terminal are disposed in a corresponding manner. One end of each second copper busbar is connected to and electrically connected to the corresponding meter inlet connection terminal, and the other end of each second copper busbar serves as the inlet-side second connection terminal.

[0021] Furthermore, the second copper busbar includes a second copper busbar head section, a second copper busbar middle section, and a second copper busbar tail section connected in sequence. The second copper busbar head section is connected and electrically connected to the corresponding meter inlet connection terminal, and the second copper busbar tail section serves as the corresponding inlet side second connection terminal.

[0022] The projection direction of the base unit is the orthogonal projection of direction d1, and the middle section of the second copper busbar and the middle section of the third copper busbar are arranged side by side with intervals along direction d2.

[0023] The directions d1, d2, and d3 are perpendicular to each other.

[0024] Furthermore, the base includes a base body and a first cable management cover plate, which is stacked and fixedly connected to the base body along direction d2.

[0025] The projection direction of the base unit is the orthogonal projection of direction d2, and the part of the third copper busbar except for the first connection terminal on the outgoing side is blocked by the first cable management cover plate.

[0026] The directions d1, d2, and d3 are perpendicular to each other.

[0027] Furthermore, the base includes a base body, a first cable management cover plate, and an insulating partition plate. The first cable management cover plate is stacked and fixedly connected to the base body along direction d2. In direction d2, the insulating partition plate is located between the base body and the first cable management cover plate and between the middle section of the second copper busbar and the middle section of the third copper busbar.

[0028] The projection direction of the base unit is the orthogonal projection of direction d2. The portion of the third copper busbar except for the first connecting terminal on the outgoing side and the second connecting terminal on the incoming side of the second copper busbar are blocked by the first cable management cover plate. Part of the middle section of the second copper busbar and part of the middle section of the third copper busbar are intersected. The insulating partition plate at least separates the intersecting portion of the middle section of the second copper busbar and the middle section of the third copper busbar.

[0029] The directions d1, d2, and d3 are perpendicular to each other.

[0030] Furthermore, the projection direction of the base unit is an orthogonal projection of direction d1. The middle sections of the second and third copper busbars are arranged side by side with intervals along direction d2. The first sections of each second copper busbar overlap, the first sections of each third copper busbar overlap, and the first sections of the second and third copper busbars overlap at least partially. The second connecting terminals on each incoming line side overlap, the first connecting terminals on each outgoing line side overlap, the second connecting terminals on each outgoing line side overlap, and the first and second connecting terminals on each outgoing line side are arranged side by side with intervals along direction d3. The connecting terminals of the meter connecting terminal group overlap. The second connecting terminals on the incoming line side overlap with the first connecting terminals on the outgoing line side, or the second connecting terminals on the incoming line side, the first connecting terminals on the outgoing line side, and the second connecting terminals on the outgoing line side are arranged side by side with intervals along direction d3.

[0031] In the base unit, and in direction d3, the cable outlet switch is located on one side of the first cable management cover, and the meter is located on the other side of the first cable management cover.

[0032] Furthermore, the mounting position group also includes outgoing line positions, with outgoing line switch positions and outgoing line positions arranged one-to-one; in the base unit, the outgoing line positions and outgoing line switch positions are arranged side by side along direction d3, and the outgoing line positions and meter positions are respectively located on both sides of the outgoing line switch positions along direction d3.

[0033] The terminal group also includes an outgoing connection terminal group disposed in the outgoing position. The outgoing connection terminal group includes external outgoing wiring terminals that correspond one-to-one with and are electrically connected to the second connection terminal on the outgoing side. Each external outgoing wiring terminal is arranged side by side at intervals along direction d1.

[0034] Furthermore, the base unit also includes a fourth copper busbar, one end of which serves as a second connection terminal on the outgoing side and the other end is used to cooperate with the corresponding external outgoing terminal.

[0035] Furthermore, the base also includes a base body and a cable outlet cover assembly that is stacked and fixedly connected to the base body along direction d2, with each cable outlet cover assembly corresponding to a cable outlet position.

[0036] The fourth copper busbar includes a first section and a last section connected in sequence. The first section of the fourth copper busbar serves as the second connection terminal on the outgoing side, and the last section of the fourth copper busbar is electrically connected to the corresponding external outgoing terminal.

[0037] The projection direction of the base unit is the orthogonal projection of direction d2, and the tail section of the fourth copper busbar and the outgoing connection terminal group are blocked by the outgoing cover plate group.

[0038] In the base unit, the cable outlet cover plate assembly, the first cable management cover plate of the base, and the base body cooperate to form a cable outlet switch cavity for inserting the cable outlet switch in the direction d2.

[0039] The directions d1, d2, and d3 are perpendicular to each other.

[0040] Furthermore, the installation position group also includes an incoming switch position, a meter position, and an outgoing switch position, which are arranged one-to-one. An incoming switch connection terminal group is set in the incoming switch position, and the incoming switch connection terminal group also includes an incoming switch first connection terminal for plugging and electrically connecting with the incoming wiring terminal of the incoming switch.

[0041] In the base unit, the incoming line switch position and the outgoing line switch position are arranged sequentially along direction d1, and the incoming line switch position and the outgoing line switch position are arranged side by side with the meter position along direction d3.

[0042] Furthermore, the base also includes an inlet position, which is configured one-to-one with an inlet switch position; the plug-in base also includes an inlet connection terminal group disposed in the inlet position, the inlet connection terminal group includes an external inlet terminal that is configured one-to-one with and electrically connected to the first connection terminal of the inlet switch, and each external inlet terminal is arranged side by side at intervals along direction d1, and the external inlet terminal is also used to connect and electrically connect to the external conductor of the inlet.

[0043] Furthermore, in the base unit, the incoming line position and the incoming line switch position are arranged side by side along direction d3, and the incoming line position and the meter position are respectively located on both sides of the outgoing line switch position in direction d3; the base unit also includes a first copper busbar that corresponds one-to-one with the first connection terminal of the incoming line switch, one end of each first copper busbar serving as the first connection terminal on the incoming line side, and the other end being used to cooperate with the corresponding external incoming line terminal.

[0044] Furthermore, the base also includes a base body and an inlet cover plate assembly stacked with the base body along direction d2, with the inlet cover plate assembly, the inlet position and the inlet switch position corresponding to each other; the first copper busbar includes a first copper busbar head section and a first copper busbar tail section connected in sequence, the first copper busbar head section serves as the first connection terminal on the inlet side, and the first copper busbar tail section is electrically connected to the corresponding external inlet terminal.

[0045] The projection direction of the base unit is the orthogonal projection of direction d2. The inlet cover plate group blocks the tail section of the first copper busbar and the outlet connection terminal group. In the base unit, the inlet cover plate group, the base body and the first cable management cover plate of the base form an inlet switch cavity for the inlet switch to be inserted along direction d2. The directions d1, d2 and d3 are perpendicular to each other.

[0046] Furthermore, the plug-in base includes a base unit group, which includes n base units arranged side by side along direction d1, where n≥2;

[0047] The base unit group also includes a cable inlet located on the base of one base unit;

[0048] The base unit group also includes an incoming line connection terminal group disposed in the incoming line position. The incoming line terminal group includes an external incoming line terminal for connecting and electrically connecting with the external conductor of the incoming line. Each external incoming line terminal is arranged side by side at intervals along direction d1. The incoming line switch connection terminal group of each base unit is electrically connected to the incoming line connection terminal group of the incoming line position 15.

[0049] Furthermore, the base unit group also includes a fifth copper busbar. Each fifth copper busbar includes a fifth copper busbar plug section, a fifth copper busbar intermediate section, and a fifth copper busbar mating section. One end of the fifth copper busbar plug section and the fifth copper busbar mating section are connected to the fifth copper busbar intermediate section. The fifth copper busbar plug section serves as the first connection terminal of the incoming line switch, and the number of fifth copper busbar plug sections in each fifth copper busbar is the same as the number of the incoming line switch connection terminal group. The fifth copper busbar mating section is electrically connected to the corresponding external incoming line terminal.

[0050] Furthermore, the base where the incoming line position is located is the first base, and the base unit corresponding to the first base is the first base unit; in the first base, the incoming line position is arranged side by side with the incoming line switch position in direction d3 and sequentially with the outgoing line switch position along direction d1, and the incoming line position and the meter position are located on both sides of the incoming line switch position in direction d3 respectively.

[0051] The middle section of the fifth copper busbar extends along direction d1;

[0052] The projection direction of the first base unit is the orthogonal projection of direction d1. The first connection terminal of the incoming line switch, the first connection terminal of the outgoing line switch, the second connection terminal of the incoming line switch, and the second connection terminal of the outgoing line switch are arranged side by side and spaced apart along direction d3 and are moved away from the meter position along direction d3.

[0053] The first base also includes an inlet cover plate group stacked with the corresponding base body along direction d2; the base unit group also includes an intermediate cable management plate group stacked with each base body along direction d2, the intermediate cable management cover group including a second cable management cover plate; the projection direction of the base unit group is on the orthogonal projection of direction d2, the inlet cover plate group blocks the corresponding fifth copper busbar mating section and the inlet connection terminal group, and the second cable management cover plate blocks the middle section of the fifth copper busbar;

[0054] In the base unit group, the second cable management cover plate, the first cable management cover plate of the base, and the base body cooperate to form an incoming switch cavity for each incoming switch to be inserted in the direction d2.

[0055] Furthermore, each connection terminal of the meter connection terminal group is used to be plugged into and electrically connected to each wiring terminal of the energy meter along direction d3 or direction d2; each connection terminal of the incoming switch connection terminal group is used to be plugged into and electrically connected to each wiring terminal of the incoming switch along direction d2; each connection terminal of the outgoing switch connection terminal group is used to be plugged into and electrically connected to each wiring terminal of the outgoing switch along direction d2.

[0056] Furthermore, the base also includes an incoming line switch avoidance notch for avoiding the incoming line switch and corresponding to the outgoing line switch position one by one; in the base unit, the outgoing line switch position and the incoming line switch avoidance notch are arranged side by side along direction d1, and the outgoing line switch position and the incoming line switch avoidance notch are arranged side by side with the meter position along direction d3; the second connection terminal of the incoming line switch is located in the corresponding incoming line switch avoidance notch.

[0057] Furthermore, the base also includes an incoming line switch avoidance notch for avoiding the incoming line switch.

[0058] Furthermore, each connection terminal of the meter connection terminal group is used to be plugged into and electrically connected to each wiring terminal of the energy meter along direction d3 or direction d2; the second connection terminal of the incoming line switch is used to be plugged into and electrically connected to the incoming wiring terminal of the incoming line switch along direction d3 or direction d2; and each connection terminal of the outgoing line switch connection terminal group is used to be plugged into and electrically connected to each wiring terminal of the outgoing line switch along direction d2.

[0059] Furthermore, the base also includes at least one expansion module slot for accommodating an expansion module; the base unit also includes an expansion module connection terminal group fixedly disposed on the base and located within the expansion module slot for plugging and electrically connecting with the wiring terminals of the expansion module.

[0060] Furthermore, the meter connection terminal group also includes a meter inlet connection terminal; the meter inlet connection terminal is used for one-to-one plug-in electrical connection with the inlet wiring terminal of the energy meter; the terminal group also includes an inlet switch connection terminal group, the inlet switch connection terminal group, the meter connection terminal group and the outlet switch connection terminal group are connected in series in the same electrical circuit; the expansion module connection terminal group is electrically connected to the inlet switch connection terminal group when the expansion module needs to draw power from the electrical circuit; in the base unit, the expansion module position, the inlet switch position and the outlet switch position are arranged side by side along direction d1.

[0061] Furthermore, the base unit also includes a sampling device disposed within the base, the sampling device comprising a sampling circuit board and sampling elements.

[0062] Furthermore, the sampling element includes at least one of a current sampling element, a residual current transformer, a temperature sensor, and a voltage sensor; each of the current sampling elements is used to collect the current of each phase of the electrical circuit; each of the voltage sensors is used to collect the voltage of each phase of the electrical circuit; the residual current transformer is used to detect the residual current in the electrical circuit; and the temperature sensor is used to collect the temperature in the environment where the plug-in base is located and / or the temperature of at least some of the connected terminals of the terminal group.

[0063] Furthermore, the base unit also includes a meter positioning detection mechanism disposed on the base and used to detect whether the electricity meter is installed in the meter position.

[0064] And / or, the base unit further includes an incoming switch positioning detection mechanism disposed on the base and used to detect whether the incoming switch is installed in the incoming switch position;

[0065] And / or, the base unit further includes a line switch positioning detection mechanism disposed on the base and used to detect whether the line switch is installed in the line switch position.

[0066] Furthermore, the meter placement detection mechanism is used to connect to the electricity meter and / or the background control system and / or the control module that controls the opening and closing of the outgoing line switch; when the meter placement detection mechanism detects that the electricity meter is not installed in place, it sends an alarm signal through the electricity meter and / or the background control system, and / or drives the outgoing line switch to open through the control module;

[0067] And / or, the incoming line switch position detection mechanism is used to connect to the energy meter and / or the background control system and / or the control module that controls the opening and closing of the outgoing line switch; when the incoming line switch position detection mechanism detects that the incoming line switch is not installed in place, it sends an alarm signal through the energy meter and / or the background control system, and / or drives the outgoing line switch to open through the control module.

[0068] And / or, the outgoing line switch positioning detection mechanism is used to connect to the energy meter and / or the background control system and / or the control module that controls the opening and closing of the outgoing line switch; when the outgoing line switch positioning detection mechanism detects that the outgoing line switch is not installed in place, it sends an alarm signal through the energy meter and / or the background control system, and / or drives the outgoing line switch to open through the control module.

[0069] Furthermore, the base unit also includes a control module connection terminal group fixedly mounted on the base and located within the outgoing switch position. Each connection terminal of the control module connection terminal group is used to plug into and electrically connect with each wiring terminal of the control module. The control module is used to control the opening and closing of the outgoing switch by transmission cooperation with the operating device of the outgoing switch.

[0070] Furthermore, the sampling circuit board is also used to connect to the control module to provide working power to the control module and / or transmit the collected signals to the control module. The control module is used to control the opening and closing of the outgoing line switch in cooperation with the operating device of the outgoing line switch.

[0071] Furthermore, in the base unit, the incoming line switch position and the outgoing line switch position are arranged side by side along direction d1, or the incoming line switch position is arranged in direction d3 closer to the meter position than the outgoing line switch position.

[0072] Furthermore, the projection direction of the base unit is an orthogonal projection of direction d2. Each connection terminal of the meter connection terminal group has one end for plugging into and electrically connecting with each wiring terminal of the energy meter, and the other end is fixed on the base and blocked by the first cable management cover plate.

[0073] The first cable management cover is provided with a first shorting hole corresponding to the inlet connection terminal of the electricity meter and a second shorting hole corresponding to the outlet connection terminal of the electricity meter.

[0074] The base unit further includes a shorting device, which includes a shorting device housing and a shorting component. The shorting component includes a first shorting part and a second shorting part connected in series. One end of the first shorting part protrudes outside the shorting device housing and is correspondingly arranged with the first shorting hole. One end of the second shorting part protrudes outside the shorting device housing and is correspondingly arranged with the second shorting hole. The first shorting part and the second shorting part are respectively inserted into the first shorting hole and the second shorting hole to make contact and conduction with the corresponding meter inlet connection terminal and meter outlet connection terminal, thereby short-circuiting the corresponding meter inlet connection terminal and meter outlet connection terminal.

[0075] The plug-in base of the present invention enables plug-in installation of energy meters and outgoing switches, while simultaneously fixing their positions and connecting them to the circuit. This significantly improves the installation efficiency of energy meters and outgoing switches, saves wiring operations, thereby saving manpower. Furthermore, the outgoing switches can be disassembled or replaced by hot-swapping.

[0076] Furthermore, the plug-in base of this invention enables plug-in installation of the incoming switch, further improving installation efficiency, saving wiring operations, and conserving manpower.

[0077] Furthermore, in the plug-in base of the present invention, both the second copper busbar and the third copper busbar are disposed inside the base. One end of the second copper busbar is connected to the meter inlet connection terminal and the other end serves as the second connection terminal of the inlet switch. One end of the third copper busbar is connected to the meter outlet connection terminal and the other end serves as the first connection terminal on the outlet side. This eliminates the exposed wires in the plug-in base of the past, improves safety and aesthetics, and reduces the number of parts, simplifying the assembly operation.

[0078] In addition, the plug-in base can detect whether the electricity meter and / or the incoming switch and / or the outgoing switch are installed in place, thereby ensuring that each electrical device is installed in place before being put into use, thus improving safety and reliability.

[0079] In addition, the plug-in base integrates a sampling device, which facilitates the collection of operating parameters of the electrical circuit where the plug-in base is located and / or environmental parameters of the environment where the plug-in base is located.

[0080] In addition, the plug-in base is equipped with a modular sampling device, which can be set up or removed as needed to improve convenience.

[0081] Furthermore, the short-circuit device enables the disassembly and replacement of the electricity meter without interrupting power. Attached Figure Description

[0082] Figure 1 This is a structural schematic diagram of the plug-in base of the present invention from a first perspective. The plug-in base has a base unit for mounting a four-phase (i.e., three-phase four-wire) energy meter, a four-phase (i.e., three-phase four-wire) incoming switch and a four-phase (i.e., three-phase four-wire) outgoing switch.

[0083] Figure 2 This is a structural schematic diagram of the plug-in base of the present invention from a second perspective. The plug-in base has a base unit for mounting a four-phase (i.e., three-phase four-wire) energy meter, a four-phase (i.e., three-phase four-wire) incoming switch and a four-phase (i.e., three-phase four-wire) outgoing switch.

[0084] Figure 3 This is a schematic diagram of the structure of the plug-in base of the present invention, which removes the base, in the assembled state with the energy meter, the incoming switch and the outgoing switch. The plug-in base has a base unit.

[0085] Figure 4 This is the invention Figure 1 The copper busbar circuit structure of the plug-in base is shown in the first-view diagram. It is used to cooperate with a four-phase (i.e., three-phase four-wire) energy meter, a four-phase (i.e., three-phase four-wire) incoming switch and a four-phase (i.e., three-phase four-wire) outgoing switch.

[0086] Figure 5 This is the invention Figure 1 The copper busbar circuit structure of the plug-in base is shown in the second perspective. It is used to cooperate with a four-phase (i.e., three-phase four-wire) energy meter, a four-phase (i.e., three-phase four-wire) incoming switch and a four-phase (i.e., three-phase four-wire) outgoing switch.

[0087] Figure 6 This is a schematic diagram of the outgoing switch and control module of the present invention from two different perspectives;

[0088] Figure 7 This is a schematic diagram of the structure of the outgoing switch, control module and sampling device of the present invention in the assembled state; in sub-figure (71), the outgoing switch, control module and sampling device are in the assembled state; in sub-figure (72), the control module and sampling device are in the assembled state, and the outgoing switch, control module and sampling device are in the separated state;

[0089] Figure 8 This is a schematic diagram of the sampling device and control module of the present invention;

[0090] Figure 9This is a schematic diagram of the control module of the present invention;

[0091] Figure 10 This is a schematic diagram of the output switch and sampling device of the present invention;

[0092] Figure 11 This is a schematic diagram of the wiring device according to the first embodiment of the present invention from a first perspective;

[0093] Figure 12 This is a schematic diagram of the wiring device according to the first embodiment of the present invention from a second perspective;

[0094] Figure 13 This is a schematic diagram of the wiring device of the first embodiment of the present invention from a third perspective. The wiring terminal is at the first wiring position, the first baffle avoids the first opening and the second baffle blocks the second opening.

[0095] Figure 14 This is another structural schematic diagram of the wiring device of the first embodiment of the present invention from a third perspective. The wiring terminal is at the first wiring position, the first baffle avoids the first opening and the second baffle blocks the second opening;

[0096] Figure 15 This is a schematic diagram of the wiring device of the first embodiment of the present invention from a fourth perspective. The wiring terminal is at the second wiring position, the first baffle blocks the first opening and the second baffle avoids the second opening.

[0097] Figure 16 This is another structural schematic diagram of the wiring device of the first embodiment of the present invention from a fourth perspective. The wiring terminal is at the second wiring position, the first baffle blocks the first opening and the second baffle avoids the second opening;

[0098] Figure 17 This is a schematic diagram of the wiring device according to the second embodiment of the present invention, indicating that the mating structure is in the first position;

[0099] Figure 18 This is a cross-sectional schematic diagram of the wiring device according to the second embodiment of the present invention, indicating the mating structure in the first position;

[0100] Figure 19 This is a schematic diagram of the wiring device according to the second embodiment of the present invention, indicating that the mating structure is in the second position;

[0101] Figure 20 This is a cross-sectional schematic diagram of the wiring device according to the second embodiment of the present invention, indicating that the mating structure is in the second position;

[0102] Figure 21 This is a schematic diagram of the plug-in base of the present invention from a second perspective. The plug-in base has a base unit and at least a second indicator structure is shown.

[0103] Figure 22 This is a structural schematic diagram of the plug-in base of the present invention from a second perspective, showing at least a first cable management cover, a second inlet cover, and a second outlet cover. The plug-in base has a base unit and is used to install a four-phase (i.e., three-phase four-wire) energy meter, a four-phase (i.e., three-phase four-wire) inlet switch, and a four-phase (i.e., three-phase four-wire) outlet switch.

[0104] Figure 23 This is an exploded view of the plug-in base of the present invention. The plug-in base has a base unit for mounting a four-phase (i.e., three-phase four-wire) energy meter, a four-phase (i.e., three-phase four-wire) incoming switch and a four-phase (i.e., three-phase four-wire) outgoing switch.

[0105] Figure 24 This is the invention Figure 23 A magnified view of the 9000 section;

[0106] Figure 25 This is a structural schematic diagram of the meter connection terminal group, the second copper busbar, the third copper busbar, and the insulating partition plate of the present invention. Sub-figure 251 is a structural schematic diagram of the meter connection terminal group, the second copper busbar, the third copper busbar, and the insulating partition plate in the assembled state, and sub-figure 252 is a structural schematic diagram of the meter connection terminal group, the second copper busbar, the third copper busbar, and the insulating partition plate in the disassembled state.

[0107] Figure 26 This is a structural schematic diagram of the plug-in base of the present invention from a second perspective. The plug-in base has two base units.

[0108] Figure 27 This is a schematic diagram of the copper busbar circuit structure, the four-phase (i.e., three-phase four-wire) incoming switch and the four-phase (i.e., three-phase four-wire) outgoing switch and control module of the present invention from a second perspective and in the assembled state, wherein the fifth copper busbar connects the first connection terminals of the incoming switches of each base unit together.

[0109] Figure 28 This is a structural schematic diagram of the plug-in base of the present invention from a second perspective, showing at least a first cable management cover, a second inlet cover, and a second outlet cover. The plug-in base has a base unit and is used to install a two-phase (i.e., single-phase two-wire) energy meter, a two-phase (i.e., single-phase two-wire) inlet switch, and a two-phase (i.e., single-phase two-wire) outlet switch.

[0110] Figure 29 This is a schematic diagram of the structure of the plug-in base of the present invention. The plug-in base has two base units. The plug-in base is used to install a two-phase (i.e., single-phase two-wire) energy meter, a two-phase (i.e., single-phase two-wire) incoming switch and a two-phase (i.e., single-phase two-wire) outgoing switch.

[0111] Figure 30 This is the invention Figure 29 First exploded view of the plug-in base in the middle;

[0112] Figure 31 This is the invention Figure 29 Second exploded view of the plug-in base;

[0113] Figure 32 This is a schematic diagram of the structure of the plug-in base of the present invention, which at least shows the copper bus circuit structure and the assembly relationship between the fifth copper bus and the base body. The plug-in base has two base units for installing a two-phase (i.e., single-phase two-wire) energy meter, a two-phase (i.e., single-phase two-wire) incoming switch and a two-phase (i.e., single-phase two-wire) outgoing switch. Each base unit shares the incoming position and the incoming connection terminal group.

[0114] Figure 33 This is the invention Figure 32 The diagram shows the structure of the main body of the plug-in base, where the two main bodies are integrated into one piece.

[0115] Figure 34 This is the invention Figure 32 The copper busbar circuit structure of the plug-in base and the structural diagram of the fifth copper busbar in the assembled state;

[0116] Figure 35 This is a schematic diagram of the plug-in base of the present invention from a second perspective. The plug-in base has two base units, and the two base units have independent cable entry positions.

[0117] Figure 36 This is the invention Figure 35 A schematic diagram of the copper busbar circuit structure of the plug-in base;

[0118] Figure 37 This is a schematic diagram of the plug-in base of the present invention from a second perspective. The plug-in base has a base unit, and the base unit is provided with an incoming line switch avoidance notch for avoiding the incoming line switch.

[0119] Figure 38 This is a schematic diagram of the plug-in base of the present invention from a second perspective, which is related to... Figure 37 Compared to the plug-in base shown, it does not have a second copper busbar and a meter inlet connection terminal;

[0120] Figure 39 This is a schematic diagram of the plug-in base of the present invention from a second perspective. It has a base unit and a first shorting hole and a second shorting hole are provided on the first cable management plate.

[0121] Figure 40 This is a schematic diagram of the shorting device of the present invention.

[0122] Explanation of reference numerals in the attached figures

[0123] 10. Base, base body 101, first cable management cover 102, insulating partition 103, second cable management cover 104, third cable management cover 105, inlet cover assembly 106, first inlet cover 1061, second inlet cover 1062, outlet cover assembly 107, first outlet cover 1071, second outlet cover 1072; intermediate cable management plate assembly 108, first shorting hole 1091, second shorting hole 1092, inlet switch clearance notch 9211; 11. Meter position; 12. Inlet switch position. 13 Outgoing switch position, 14 Expansion module position, 15 Incoming position, 16 Outgoing position, 17 Incoming compartment, 18 Outgoing compartment, partition 19; meter connection terminal group 20, meter incoming connection terminal 21, meter outgoing connection terminal 22; incoming side connection terminal group 30, incoming side first connection terminal 31, incoming side second connection terminal 32; outgoing side connection terminal group 40, outgoing side first connection terminal 41, outgoing side second connection terminal 42; control module connection terminal group 50; expansion module connection terminal group 60;

[0124] External connection terminal block 70; first wiring screw 71, second wiring screw 72, terminal block 731, terminal board 74, first wiring layer 741, second wiring layer 742, first baffle 751, second baffle 752, wire clamping plate 753, first elastic reset element 761, second elastic reset element 762, position monitoring element 771, mating structure driven plate 772, indicating mating structure 773, mating structure shielding part 774, mating part 775, mating hole 776, mating structure triggering part 777, driven part 778, mating structure insertion part 779, first wiring hole 791, second wiring hole 792, terminal block main Body 793, third wiring hole 794, wiring part of terminal block 795; external outgoing terminal block 80; wiring device housing 81, first opening 821, second opening 822, first operating hole 831, second operating hole 832, terminal cavity 84, first indicator part 851, second indicator part 852; meter position detection mechanism 91; incoming switch position detection mechanism 92; outgoing switch position detection mechanism 93; first copper busbar 110, first copper busbar head section 1101, first copper busbar tail section 1102; second copper busbar 120, second copper busbar head section 1201, second copper busbar middle section 1202, second copper busbar tail section 1203; third Copper busbar 130, first section of the third copper busbar 1301, middle section of the third copper busbar 1302, tail section of the third copper busbar 1303; fourth copper busbar 140, first section of the fourth copper busbar 1401, tail section of the fourth copper busbar 1402; fifth copper busbar 150, plug-in section of the fifth copper busbar 1501, middle section of the fifth copper busbar 1502, mating section of the fifth copper busbar 1503; energy meter 910; incoming switch 920; outgoing switch 930, operating component 931, pulling component 932, limit shoulder 933, incoming terminal of outgoing switch 934, outgoing terminal of outgoing switch 935, handle 936, stationary contact 9371, moving contact 9372, arc extinguishing chamber 938, protection Protection mechanism 939; control module 940, drive mechanism 941, control circuit board 942, tripping mechanism 943, motor 944, transmission gear set 945, drive gear component 946, control module wiring terminal 947; sampling device 950, first front connection terminal group 951, second front connection terminal group 952, first rear connection terminal group 953, second rear connection terminal group 954, sampling circuit board 955, current sampling component 956, residual current transformer 957, sampling device housing 958; short-circuit device 960, short-circuit device housing 961, short-circuit component 962, first short-circuit part 963, second short-circuit part 964. Detailed Implementation

[0125] The following embodiments, in conjunction with the accompanying drawings, further illustrate specific implementations of the plug-in base of the present invention. The plug-in base of the present invention is not limited to the descriptions in the following embodiments.

[0126] The plug-in base of this invention is applied in a metering box (not shown in the figure). The metering box is an electrical cabinet specifically for electricity metering, or an electrical cabinet with an electricity meter 910, an incoming switch 920, and an outgoing switch 930, etc., for electricity metering and also having other functions. The metering box usually contains an electricity meter 910, an incoming switch 920 (the incoming switch 920 refers to the switching device connected in series between the electricity meter 910 and the power supply side), and an outgoing switch 930 (the outgoing switch 930 refers to the switching device connected in series between the electricity meter 910 and the load side). The electricity meter 910, the incoming switch 920, and the outgoing switch 930 are set up one-to-one and used in conjunction. The plug-in base of this invention is at least used to support the electricity meter 910 and the outgoing switch 930. The incoming switch 920 can be supported on the plug-in base or fixed on a structure outside the plug-in base inside the metering box (e.g., the bottom wall of the metering box or a mounting rail fixed inside the metering box) as needed.

[0127] Furthermore, such as Figure 1-2 As shown, the metering box is also equipped with an expansion module to realize functional expansion. The expansion module can be carried on the plug-in base, or it can be set on a structure other than the plug-in base. Those skilled in the art can make arrangements according to actual needs.

[0128] Furthermore, the incoming switch 920 and the outgoing switch 930 can be implemented using existing technology, such as a type of switchgear having at least an operating mechanism and a contact system, wherein the operating mechanism is kinetically connected to the contact system to close and open the contact system.

[0129] Specifically, the incoming line switch 920 is implemented by an isolating switch, which can be an existing isolating switch, and the specific structure will not be described in detail here.

[0130] Specifically, such as Figure 3 , 6As shown in Figure 10, the outgoing line switches 930 are all implemented by circuit breakers (such as ordinary circuit breakers, residual current operated circuit breakers, or prepaid circuit breakers). Each circuit breaker includes an operating element 931, which is operated by external force to drive the circuit breaker to close and open. Each circuit breaker includes 1P type circuit breaker units, with a number of ≥2 units. Each circuit breaker unit includes an operating device and a contact system. The operating device includes a handle 936 (i.e., the operating element of the outgoing line switch 930) and an operating mechanism. The contact system includes a moving contact 9372 and a stationary contact 9371 used in conjunction. The handle 936 is throttle-connected to the operating mechanism, and the operating mechanism is throttle-connected to the moving contact 9372. The handle 936 of each circuit breaker unit is connected to the operating element 931 to achieve synchronous operation of each handle 936. The circuit breaker unit also includes an arc-extinguishing chamber 938 that works in conjunction with the contact system and a protection mechanism 939 (e.g., an intelligent trip unit). When a short circuit or overload fault occurs in the phase where the circuit breaker unit is located, the protection mechanism 939 drives the operating mechanism to trip the circuit breaker unit. Furthermore, each circuit breaker unit has an independent housing, or they are housed in a common housing with insulating partitions between adjacent circuit breaker units. Furthermore, the outgoing line switch 930 is also equipped with a pull-out member 932 for an operator to pull out the outgoing line switch 930.

[0131] Furthermore, such as Figure 3 , 6 As shown in Figure 7, the metering box is also equipped with a control module 940, which works in conjunction with the outgoing line switch 930 to drive the opening and closing of the outgoing line switch 930. Furthermore, the control module 940 is connected to the operating device. The control module 940 can be implemented using existing technology. For example, the control module 940 includes a drive mechanism 941, a control circuit board 942, and a tripping mechanism 943. The drive mechanism 941 includes a motor 944, a transmission gear set 945, and a drive gear component 946. The motor 944 is connected to the control circuit board 942. The motor 944 is connected to the drive gear component 946 via the transmission gear set 945. The drive gear component 946 is connected to the handle 936 of each circuit breaker unit. The tripping mechanism 943 is connected to the control circuit board 942 and is in transmission cooperation with the operating mechanism of the circuit breaker unit. The control circuit board 942 controls the rotation of the motor 944 to drive each circuit breaker unit to close and open synchronously. The control circuit board 942 also controls the tripping mechanism 943 to actuate, thereby driving the operating mechanism of each circuit breaker unit to trip. Furthermore, the control module 940 and the outgoing switch 930 are either detachable separate structures or integrated structures.

[0132] Furthermore, the metering box also includes a box body (not shown in the figure) and a box door (not shown in the figure). The plug-in base, inlet switch 920, outlet switch 930, control module 940, expansion module, etc., are all housed within the space formed by the box body and the box door; for example... Figure 3 and Figure 6 As shown, the outgoing switch 930 includes a limiting shoulder 933 disposed on the housing; the door has a door opening (not shown in the figure) through which the operating member 931 of the outgoing switch 930 protrudes outward, and the side edge of the door opening abuts against the limiting shoulder 933 for limiting and fixing, so as to reliably fix the outgoing switch 930 in the working position (e.g., in the outgoing switch position 13 described later). Further, the incoming switch 920 includes a limiting shoulder 933 disposed on the housing, and the door is used to abut against the limiting member 933 for limiting and fixing, so as to reliably fix the incoming switch 920 in the working position (e.g., in the incoming switch position 12 described later).

[0133] Specifically, such as Figure 3 and 6 As shown, both the incoming line switch 920 and the outgoing line switch 930 include two sets of limiting shoulders 933. The two sets of limiting shoulders 933 located on the same switch are disposed on the housing of the switch and located on both sides of the operating member 931 of the switch.

[0134] Furthermore, the number of phases of the energy meter 910, the incoming switch 920, and the outgoing switch 930 are the same.

[0135] Specifically, the energy meter 910 is a two-phase energy meter (or a single-phase two-wire energy meter) including phase P and phase N. Correspondingly, the incoming switch 920 is a two-phase disconnecting switch (or a single-phase two-wire disconnecting switch) including phase P and phase N, and the outgoing switch 930 is a two-phase circuit breaker (or a single-phase two-wire circuit breaker) including phase P and phase N. Alternatively, the energy meter 910 is a four-phase energy meter (or a three-phase four-wire energy meter) including phases A, B, C, and N. Correspondingly, the incoming switch 920 is a four-phase disconnecting switch (or a three-phase four-wire disconnecting switch) including phases A, B, C, and phase N, and the outgoing switch 930 is a four-phase circuit breaker (or a three-phase four-wire circuit breaker) including phases A, B, C, and phase N.

[0136] like Figure 1-2As shown in Figures 21-23, 26, 28-33, 35, and 37, the plug-in base of the present invention has a length, width, and height in the directions d1, d2, and d3, respectively, and these directions are perpendicular to each other. Further, the plug-in base of the present invention includes m base unit groups where m ≥ 1, meaning the number of base unit groups is m ≥ 1. Each base unit group includes n base units where n ≥ 1, meaning the number of base units is n ≥ 1. Each base unit includes a base 10 and a terminal group fixedly disposed relative to the base 10. The base 10 includes a group of mounting positions disposed thereon, each group including a meter position 11 for mounting an energy meter 910 and an outgoing switch position 13 for mounting an outgoing switch 930, which are arranged side-by-side along direction d3. The terminal group includes a meter connection terminal group 20 and an outgoing switch connection terminal group, which are arranged one-to-one and connected in series in the same electrical circuit. The meter connection terminal group 20 is located at the meter position 11 (for example, each connection terminal of the meter connection terminal group 20, at least the part used for plugging and connecting with the wiring terminals of the energy meter 910 is located in the meter position 11). The meter connection terminal group 20 includes meter outgoing connection terminals 22 for plugging and connecting one-to-one with the outgoing wiring terminals of the energy meter 910. The number of meter outgoing connection terminals 22 is the same as the number of phases of the energy meter 910. The number of wiring terminals (including incoming wiring terminals and outgoing wiring terminals) of the energy meter 910 is twice the number of phases of the energy meter 910. The outgoing switch connection terminal group is located at the outgoing switch position 13 (for example, each connection terminal of the outgoing switch connection terminal group, ... At least the portion used for electrical connection to the terminals of the outgoing switch 930 is located within the outgoing switch position 13. Each connection terminal of the outgoing switch connection terminal group is used for electrical connection to each terminal of the outgoing switch 930. The number of connection terminals in the outgoing switch connection terminal group and the number of terminals in the outgoing switch 930 are both twice the number of phases of the outgoing switch 930. The outgoing switch connection terminal group is also used for electrical connection to an external outgoing conductor. The external outgoing conductor refers to a conductor connected in series between the outgoing switch 930 and the next-level / secondary circuit, or a conductor connected in series between the outgoing switch 930 and the load side. The terms "meter position 11", "outgoing switch position 13", and "incoming switch position 12", "incoming position 15", and "outgoing position 16" as described below refer to the corresponding three-dimensional spaces (i.e., meter position 11 is the three-dimensional space for installing the energy meter 910, outgoing switch position 13 is the three-dimensional space for installing the outgoing switch 930, incoming switch position 12 is the three-dimensional space for installing the incoming switch 920, incoming position 15 is the three-dimensional space for installing the incoming connection terminal group, and outgoing position 16 is the three-dimensional space for installing the outgoing connection terminal group), rather than merely describing planar positions.

[0137] The plug-in base of the present invention enables plug-in installation and disassembly of the energy meter 910 and the outgoing switch 930, simplifies the assembly and wiring operations between the plug-in base and the energy meter 910 and the outgoing switch 930, significantly improves installation and wiring efficiency, and saves manpower. The outgoing switch 930 can be disassembled or replaced by hot-swapping.

[0138] Furthermore, the incoming terminal of the energy meter 910 is electrically connected to an external incoming conductor via an incoming switch 920. The external incoming conductor refers to a conductor connected in series between the incoming switch 920 and the power supply side, or a conductor connected in series between the incoming switch 920 and the upstream electrical circuit.

[0139] like Figure 26-27 As shown in Figures 29-36, in the base unit group, when the number of base units n≥2, each base unit is arranged side by side along direction d1. Furthermore, in the base unit group, the base 10 of each base unit is an integral structure or a detachable split structure; specifically, the base body 101 of each base 10 is an integral structure or a detachable split structure.

[0140] In the plug-in base of the present invention, when the number of base unit groups m ≥ 2, each base unit group is arranged side-by-side at intervals along direction d1 or direction d3. Furthermore, each of the base unit groups is an integral or detachable split structure. Preferably, each base unit group in the plug-in base of the present invention is an integral structure.

[0141] like Figure 1-2 As shown in 4-5, 8, 21-24, 28, 39-40, the following is the first embodiment of the plug-in base of the present invention.

[0142] like Figure 1-2As shown in Figures 21-24 and 28, in the plug-in base of the first embodiment, the number of base unit groups m=1, the number of base units n=1, and the base unit includes a base 10 and a terminal group fixedly disposed relative to the base 10. The base 10 includes a group of mounting positions disposed thereon, which includes meter positions 11 for mounting an energy meter 910 and outgoing switch positions 13 for mounting an outgoing switch 930, each arranged in a corresponding manner. The terminal group includes a meter connection terminal group 20 and an outgoing switch connection terminal group, which are arranged in a one-to-one correspondence and connected in series in the same electrical circuit. The meter connection terminal group 20 is located within the meter position 11. Each connection terminal of the meter connection terminal group 20 is used for plugging into and electrically connecting to each terminal of the energy meter 910. The number of connection terminals in the meter connection terminal group 20 and the number of terminals in the energy meter 910 are both twice the number of phases of the energy meter 910. The meter connection terminal group 20 is also used for electrical connection to an external conductor connected to the incoming line via the incoming switch 920. The outgoing switch connection terminal group is located within the outgoing switch position 13. Each connection terminal of the outgoing switch connection terminal group is used for plugging into and electrically connecting to each terminal of the outgoing switch 930. The number of connection terminals in the outgoing switch connection terminal group and the number of terminals in the outgoing switch 930 are both twice the number of phases of the outgoing switch 930. The outgoing switch connection terminal group is also used for electrical connection to an external conductor connected to the outgoing line. That is, the incoming external conductor, the meter connection terminal group 20, the outgoing switch connection terminal group and the outgoing external conductor are connected in series in the electrical circuit.

[0143] The plug-in base of the first embodiment enables plug-in installation and removal of the energy meter 910 and the outgoing switch 930, simplifies the assembly and wiring operations between the plug-in base and the energy meter 910 and the outgoing switch 930, significantly improves installation and wiring efficiency, and saves manpower. The energy meter 910 and the outgoing switch 930 can be disassembled or replaced by hot-swapping.

[0144] like Figure 1-2As shown in Figures 4-5, 21-30, 32, and 34-37, the meter connection terminal group 20 includes a meter inlet connection terminal 21 and a meter outlet connection terminal 22. The meter inlet connection terminal 21 and the meter outlet connection terminal 22 are arranged in a one-to-one correspondence. The meter inlet connection terminal 21 is used for one-to-one plug-in electrical connection with the inlet wiring terminal of the energy meter 910 and is also used for electrical connection with the external conductor of the inlet line through the inlet switch 920. That is, each meter inlet connection terminal 21 is respectively connected to each inlet wiring terminal of the energy meter 910. The meter is plugged in and electrically connected to the external conductor of the incoming line via the incoming line switch 920. The meter output connection terminal 22 is used to plug in and electrically connect to the output terminal of the energy meter 910 one-to-one. That is, each meter output connection terminal 22 is plugged in and electrically connected to each output terminal of the energy meter 910. The number of meter incoming connection terminals 21, the number of energy meter incoming terminals, the number of meter output connection terminals 22, and the number of energy meter output terminals are all the same as the number of phases of the energy meter 910. The outgoing switch connection terminal group includes an outgoing switch first connection terminal and an outgoing switch second connection terminal. The outgoing switch first connection terminal and the outgoing switch second connection terminal are configured in a one-to-one correspondence. The outgoing switch first connection terminal is used to plug and connect one-to-one with the incoming terminal of the outgoing switch 930, that is, each outgoing switch first connection terminal is plugged and connected to each incoming terminal of the outgoing switch 930. The outgoing switch first connection terminal is also electrically connected one-to-one with the meter outgoing connection terminal 22. The outgoing switch second connection terminal is used to plug and connect one-to-one with the outgoing terminal of the outgoing switch 930, that is, each outgoing switch second connection terminal is plugged and connected to each outgoing terminal of the outgoing switch 930 and is also used to connect to the outgoing external conductor. The number of outgoing switch first connection terminals, the number of outgoing switch incoming terminals, the number of outgoing switch second connection terminals, and the number of outgoing terminal of the outgoing switch 930 are all the same as the number of phases of the outgoing switch 930.

[0145] Specifically, such as Figure 1-2 As shown in Figures 4-5 and 21-27, the energy meter 910 is a four-phase energy meter (or may also be called a three-phase four-wire energy meter); the number of the meter's incoming connection terminals 21, the number of the energy meter 910's incoming wiring terminals, the number of the meter's outgoing connection terminals 22, and the number of the energy meter 910's outgoing wiring terminals are all 4. The outgoing switch 930 is a four-phase circuit breaker (or may also be called a three-phase four-wire circuit breaker); the number of the outgoing switch's first connection terminals, the number of the outgoing switch 930's incoming wiring terminals, the number of the outgoing switch's second connection terminals, and the number of the outgoing switch 930's outgoing wiring terminals are all 4.

[0146] Specifically, such as Figures 28-30As shown in Figures 32-37, the energy meter 910 is a two-phase energy meter (or a single-phase two-wire energy meter); the number of the meter's incoming connection terminals 21, the number of the energy meter 910's incoming wiring terminals, the number of the meter's outgoing connection terminals 22, and the number of the energy meter 910's outgoing wiring terminals are all 2. The outgoing switch 930 is a two-phase circuit breaker (or a single-phase two-wire circuit breaker); the number of the meter's incoming connection terminals 21, the number of the energy meter 910's incoming wiring terminals, the number of the meter's outgoing connection terminals 22, and the number of the energy meter 910's outgoing wiring terminals are all 2.

[0147] Each connection terminal of the meter connection terminal group 20 is used to be plugged into and electrically connected to each wiring terminal of the energy meter 910 along direction d3 or direction d2. That is, when the energy meter 910 is installed on the plug-in base, each connection terminal of the meter connection terminal group 20 is plugged into and electrically connected to each wiring terminal of the energy meter 910 along direction d3, or each connection terminal of the meter connection terminal group 20 is plugged into and electrically connected to each wiring terminal of the energy meter 910 along direction d2.

[0148] Specifically, such as Figure 1-3 As shown in Figures 21-25, in the plug-in base of the first embodiment, each connection terminal of the meter connection terminal group 20 is plugged into and electrically connected to each wiring terminal of the energy meter 910 along direction d3.

[0149] like Figure 1-3 As shown in Figures 21-25, the outgoing switch connection terminal group is used to plug and electrically connect with each terminal of the outgoing switch 930 along direction d2. That is, when the outgoing switch 930 is installed on the plug-in base, each connection terminal of the outgoing switch connection terminal group is plugged and electrically connected with each terminal of the outgoing switch 930 along direction d2.

[0150] like Figure 1-2 As shown in Figures 4-5 and 21-25, the terminal group also includes an incoming line switch connection terminal group. The incoming line switch connection terminal group, the meter connection terminal group 20, and the outgoing line switch connection terminal group are connected in series in the electrical circuit. The incoming line switch connection terminal group includes an incoming line switch second connection terminal. The incoming line switch second connection terminal is used to make a one-to-one plug-in electrical connection with the incoming line terminal of the incoming line switch 920. That is, each incoming line switch second connection terminal is plugged into and electrically connected to each incoming line terminal of the incoming line switch 920. The outgoing line terminal of the incoming line switch 920 is electrically connected to the incoming line external conductor.

[0151] The plug-in base of the first embodiment enables quick installation and circuit connection of the incoming line switch 920, simplifies the wiring and assembly operations between the plug-in base and the incoming line switch 920, and saves manpower.

[0152] The second connection terminal of the incoming line switch is used to be plugged into and electrically connected to the incoming line terminal of the incoming line switch 920 along direction d3 or direction d2. That is, when the incoming line switch 920 is installed on the plug-in base, the second connection terminal of the incoming line switch is plugged into and electrically connected to the incoming line terminal of the incoming line switch 920 along direction d3, or the second connection terminal of the incoming line switch is plugged into and electrically connected to the incoming line terminal of the incoming line switch 920 along direction d2.

[0153] Specifically, such as Figure 1-3 As shown in Figures 21-25, in the plug-in base of the first embodiment, the second connection terminal of the incoming line switch is plugged into and electrically connected to the incoming line terminal of the incoming line switch 920 along direction d2.

[0154] Specifically, one end of each connection terminal of the meter connection terminal group 20 protrudes into the meter position 11; one end of each second connection terminal of the incoming switch protrudes into the incoming switch position 12; one end of each connection terminal of the outgoing switch connection terminal group protrudes into the outgoing switch position 13; that is, each connection terminal of the meter connection terminal group 20 is a male connector, and each terminal of the meter 910 is a female connector; each connection terminal of the incoming switch connection terminal group is a male connector, and each terminal of the incoming switch 920 is a female connector; each connection terminal of the outgoing switch connection terminal group is a male connector, and each terminal of the outgoing switch 930 is a female connector.

[0155] It should be noted that each connection terminal of the meter connection terminal group 20, each second connection terminal of the incoming switch, and each connection terminal of the outgoing switch connection terminal group can be implemented by existing technology, such as plug-in type connection terminal or post-type plug-in type connection terminal, etc. The corresponding wiring terminals of the electricity meter 910, incoming switch 920, and outgoing switch 930 can also be implemented by existing technology, such as busbar clamp type wiring terminals adapted to plug-in type connection terminals or wiring terminals adapted to post-type plug-in type connection terminals, etc.

[0156] Other embodiments of the connection terminals of the meter connection terminal group 20, the second connection terminals of each incoming switch, and the connection terminals of the outgoing switch connection terminal group: each connection terminal of the meter connection terminal group 20 is a female connector, and each terminal of the energy meter 910 is a male connector, and the two are plugged in for electrical connection; each connection terminal of the second connection terminal of the incoming switch is a female connector, and each terminal of the incoming switch 920 is a male connector, and the two are plugged in for electrical connection; each connection terminal of the outgoing switch connection terminal group is a female connector, and each terminal of the outgoing switch 930 is a male connector, and the two are plugged in for electrical connection.

[0157] like Figure 1-2As shown in Figures 4-5, 21-25, and 28, in the base unit, the meter position 11 and the outgoing switch position 13 are arranged side by side along direction d3, and the incoming switch connection terminal group and the outgoing switch position 13 are arranged sequentially along direction d1. The incoming switch connection terminal group and the outgoing switch position 13 are located on the same side of the meter position 11 in direction d3.

[0158] Furthermore, the connection terminals of the meter connection terminal group 20 are arranged side by side at intervals along direction d1, and the meter inlet connection terminal 21 and the meter outlet connection terminal 22 are arranged alternately along direction d1. The arrangement of the meter inlet connection terminal 21 and the meter outlet connection terminal 22 helps to reduce the size of the smart mounting base in direction d2, thereby reducing the required installation space.

[0159] Furthermore, in the outgoing switch connection terminal group, the first connection terminals of each outgoing switch are arranged side by side with intervals along direction d1, the second connection terminal groups of each outgoing switch are arranged side by side with intervals along direction d1, and the corresponding first connection terminals and second connection terminals of the outgoing switches are arranged side by side with intervals along direction d3.

[0160] Furthermore, the second connection terminals of each of the incoming line switches are arranged side by side at intervals along direction d1.

[0161] In another embodiment of the arrangement of the terminals of the meter connection terminal group 20, the meter inlet connection terminals 21 are arranged side by side with intervals along direction d1, the meter outlet connection terminals 22 are arranged side by side with intervals along direction d1, and the corresponding meter inlet connection terminals 21 and meter outlet connection terminals 22 are arranged side by side with intervals along direction d2. That is, the row formed by all the meter inlet connection terminals 21 and the row formed by all the meter outlet connection terminals 22 are arranged side by side with intervals along direction d2. The above arrangement helps to reduce the size of the plug-in base in direction d1, thereby reducing the required installation space.

[0162] like Figure 1-2 As shown in Figures 21-24 and 28, the mounting position group also includes an incoming switch position 12, a meter position 11, an incoming switch position 12, and an outgoing switch position 13, which are arranged in a one-to-one correspondence. An incoming switch connection terminal group is arranged at the incoming switch position 12 (for example, each connection terminal of the incoming switch connection terminal group, at least the part used for plugging and electrically connecting with the wiring terminal of the incoming switch 920 is located inside the incoming switch position 12); in the base unit, the incoming switch position 12 and the outgoing switch position 13 are arranged sequentially along direction d1, and the incoming switch position 12 and the outgoing switch position 13 are arranged side by side with the meter position 11 along direction d3.

[0163] Specifically, in the base unit of the plug-in base in the first embodiment, the incoming switch position 12 and the outgoing switch position 13 are arranged side by side along direction d1.

[0164] In another embodiment of the layout of the meter position 11, the incoming switch position 12 and the outgoing switch position 13, in the direction d3, the incoming switch position 12 is set closer to the meter position 11 than the outgoing switch position 13, or the outgoing switch position 13 is set closer to the meter position 11 than the incoming switch position 12.

[0165] like Figure 1-2 As shown in Figures 21-24, the terminal group further includes an inlet-side connection terminal group 30 and an outlet-side connection terminal group 40, both fixedly mounted on the base 10. The inlet-side connection terminal group 30 serves as an inlet switch connection terminal group, and includes an inlet-side second connection terminal 32, which serves as a second connection terminal of the inlet switch. The inlet-side second connection terminal 32 is used for one-to-one electrical connection with the outlet wiring terminal of the inlet switch 920 (i.e., the external wiring terminal corresponding to the inlet-side second connection terminal 32; the external wiring terminal refers to the wiring terminal other than the plug-in base). The outlet-side connection terminal group 40 serves as an outlet... The switch connection terminal group, the outgoing line connection terminal group 40 includes an outgoing line first connection terminal 41, which serves as the first connection terminal of the outgoing line switch, and an outgoing line second connection terminal 42, which serves as the second connection terminal of the outgoing line switch. That is, the outgoing line first connection terminal 41 is used to plug and electrically connect with the incoming line terminal of the outgoing line switch 930 (that is, the external terminal corresponding to the outgoing line first connection terminal 41), and the outgoing line second connection terminal 42 is used to plug and electrically connect with the outgoing line terminal of the outgoing line switch 930 (that is, the external terminal corresponding to the outgoing line second connection terminal 42). The outgoing line second connection terminal 42 is also used to electrically connect with the outgoing line external conductor.

[0166] like Figure 4-5 As shown in Figures 23-25, the base unit further includes a copper busbar circuit structure, which includes a second copper busbar 120 and a third copper busbar 130 disposed within the base 10. The meter inlet connection terminal 21, the second copper busbar 120, and the inlet-side second connection terminal 32 (i.e., the inlet switch second connection terminal) are respectively disposed one-to-one. The meter outlet connection terminal 22, the third copper busbar 130, and the outlet-side first connection terminal 41 (i.e., the outlet switch first connection terminal) are respectively disposed one-to-one. One end of each second copper busbar 120 is connected and electrically connected to the corresponding meter inlet connection terminal 21, and the other end of each second copper busbar 120 serves as the corresponding inlet-side second connection terminal 32. One end of each third copper busbar 130 is connected and electrically connected to the corresponding meter outlet connection terminal 22, and the other end of each third copper busbar 130 serves as the corresponding outlet-side first connection terminal 41.

[0167] The second copper busbar 120 and the third copper busbar 130 eliminate the need for the wires connecting the energy meter 910, the incoming switch 920 and the outgoing switch 930 in series, which greatly improves the ease of installation and aesthetics. In addition, the second copper busbar 120 and the third copper busbar 130 directly realize the second connection terminal 32 on the incoming side and the first connection terminal 41 on the outgoing side, reducing the number of parts and simplifying the structure of the plug-in base.

[0168] Specifically, the second copper busbar 120 includes a second copper busbar head section 1201, a second copper busbar middle section 1202, and a second copper busbar tail section 1203 connected in sequence. The second copper busbar head section 1201 is connected and electrically connected to the corresponding meter inlet connection terminal 21, and the second copper busbar tail section 1203 serves as the corresponding inlet side second connection terminal 32. The third copper busbar 130 includes a third copper busbar head section 1301, a third copper busbar middle section 1302, and a third copper busbar tail section 1303 connected in sequence. The third copper busbar head section 1301 is connected and electrically connected to the corresponding meter outlet connection terminal 22, and the third copper busbar tail section 1303 serves as the corresponding outlet side first connection terminal 41. Further, the second copper busbar head section 1201 is welded to the corresponding meter inlet connection terminal 21 or connected by fasteners (such as bolts or rivets); the third copper busbar head section 1301 is welded to the corresponding meter outlet connection terminal 22 or connected by fasteners (such as bolts or rivets).

[0169] Specifically, the projection direction of the plug-in base is the orthogonal projection of direction d1, the projection direction of the base unit is the orthogonal projection of direction d1, and the projection direction of the copper busbar circuit structure is the orthogonal projection of direction d1. The middle section 1202 of the first copper busbar and the middle section 1302 of the third copper busbar are arranged side by side and spaced apart along direction d2. That is, all the middle sections 1202 of the first copper busbar are located on one side of all the middle sections 1302 of the third copper busbar in direction d2, or all the middle sections 1302 of the third copper busbar are located on one side of all the middle sections 1202 of the first copper busbar in direction d2.

[0170] Specifically, the base 10 is provided with second copper busbar holes (not shown in the figure) that correspond one-to-one with the second copper busbars 120 and third copper busbar holes (not shown in the figure) that correspond one-to-one with the third copper busbars 130. The portion of each second copper busbar 120 except for the second connection terminal of the incoming switch (i.e., the second connection terminal 32 on the incoming side) is located in the corresponding second copper busbar hole, and the portion of each third copper busbar 130 except for the first connection terminal of the outgoing switch (i.e., the first connection terminal 41 on the outgoing side) is located in the corresponding third copper busbar connection hole.

[0171] Specifically, the base 10 includes a base body 101, a first cable management cover 102, and an insulating partition 103. The first cable management cover 102, the insulating partition 103, the mounting position group, and the base unit are arranged in a one-to-one correspondence. The first cable management cover 102 is fixedly connected to the base body 101. In the direction d2, the insulating partition 103 is located between the base body 101 and the first cable management cover 102, and between the middle section 1202 of the second copper busbar and the middle section 1302 of the third copper busbar. Figure 5 and 23 As shown, the projection direction of the plug-in base is the orthogonal projection of direction d2, the projection direction of the base unit is the orthogonal projection of direction d2, and the projection direction of the copper bus circuit structure is the orthogonal projection of direction d2. In the same base unit, part of the second copper bus middle section 1202 and part of the third copper bus middle section 1302 are arranged intersectingly. The insulating partition plate 103 separates at least the part where the second copper bus middle section 1202 and the third copper bus middle section 1302 intersect. The part of the second copper bus 120 except for the second connection terminal 32 on the inlet side (i.e., the first section 1201 of the second copper bus and the second copper bus middle section 1202) and the part of the third copper bus 130 except for the first connection terminal 41 on the outlet side (i.e., the first section 1301 of the third copper bus and the third copper bus middle section 1302) are all covered by the first cable management cover plate 102.

[0172] The insulating partition plate 103 increases the creepage distance and insulation gap between the second copper busbar 120 and the third copper busbar 130; the first cable management cover plate 102 significantly reduces the exposed parts of the second copper busbar 120 and the third copper busbar 130, improving safety and aesthetics.

[0173] Specifically, the insulating partition plate 103 has a second copper busbar slot on one side that corresponds one-to-one with the middle section 1202 of the second copper busbar, and a third copper busbar slot on the other side that corresponds one-to-one with the middle section 1302 of the third copper busbar. On the orthogonal projection of the insertion base and the base unit, the middle section 1202 of the second copper busbar that overlaps with the insulating partition plate 103 is inserted into the corresponding second copper busbar slot. On the orthogonal projection of the insertion base and the base unit, the middle section 1302 of the third copper busbar that overlaps with the insulating partition plate 103 is inserted into the corresponding third copper busbar slot. Furthermore, on the orthogonal projection of the plug-in base in the direction of direction d2, the orthogonal projection of the base unit in the direction of direction d2, and the orthogonal projection of the copper busbar circuit structure in the direction of direction d2, the second copper busbar 120 that overlaps with the insulating partition plate 103 is a type I second copper busbar, and the remaining second copper busbars 120 are type II second copper busbars. The second copper busbar hole that mates with the type I second copper busbar is formed by the base body 101, the insulating partition plate 103, and the first cable management cover plate 102. The second copper busbar hole that mates with the type II second copper busbar is formed by the base body 101 and the first cable management cover plate 102. The projection direction of the plug-in base is the orthogonal projection of direction d2, the projection direction of the base unit is the orthogonal projection of direction d2, and the projection direction of the copper busbar circuit structure is the orthogonal projection of direction d2. The third copper busbar 130 that overlaps with the insulating partition plate 103 is a type I third copper busbar, and the remaining third copper busbars 130 are type II third copper busbars. The third copper busbar socket that cooperates with the type I third copper busbar is formed by the base body 101, the insulating partition plate 103, and the first cable management cover plate 102. The third copper busbar socket that cooperates with the type II third copper busbar 130 is formed by the base body 101 and the first cable management cover plate 102.

[0174] Specifically, refer to Figure 30 , 32As shown in -35, when the plug-in base is used to install a two-phase (i.e., single-phase two-wire) energy meter 910, a (i.e., single-phase two-wire) incoming switch 920, and a (i.e., single-phase two-wire) outgoing switch 930, that is, when the electrical circuit is a two-phase electrical circuit, on the orthogonal projection of the plug-in base in the direction d2, on the orthogonal projection of the base unit in the direction d2, and on the orthogonal projection of the copper busbar circuit structure in the direction d2, in the same base unit, a second copper busbar 120 and a third copper busbar 130 are arranged crosswise. The second copper busbar 120 overlaps with the insulating partition plate 103 (specifically, the middle section 1202 of the second copper busbar 120 overlaps with the insulating partition plate 103), the other second copper busbar 120 does not overlap with the insulating partition plate 103, and the two third copper busbars 130 overlap with the insulating partition plate 103 (specifically, the middle section 1302 of the third copper busbar overlaps with the insulating partition plate 103). In other embodiments, the projection direction of the plug-in base is an orthogonal projection of direction d2, and in the same base unit, only one second copper busbar 120 and one third copper busbar 130 that intersect each other overlap with the insulating partition plate 103; or, the projection direction of the plug-in base is an orthogonal projection of direction d2, and in the same base unit, each second copper busbar 120 and each third copper busbar 130 overlaps with the insulating partition plate 103.

[0175] Specifically, such as Figure 23-25 As shown, when the plug-in base is used to install a four-phase (i.e., three-phase four-wire) energy meter 910, a four-phase (i.e., three-phase four-wire) incoming switch 920, and a four-phase (i.e., three-phase four-wire) outgoing switch 930, that is, when the electrical circuit is a four-phase electrical circuit, on the orthogonal projection of the plug-in base in the direction d2, on the orthogonal projection of the base unit in the direction d2, and on the orthogonal projection of the copper busbar circuit structure in the direction d2, in the same base unit, the three second copper busbars 120 and the three third copper busbars 130 located in the middle in the direction d2 are arranged crosswise. All the second copper busbars 120 overlap with the insulating partition plate 103, and all the third copper busbars 130 overlap with the insulating partition plate 103.

[0176] Specifically, such as Figure 21-23 As shown in Figure 28, in the base unit, in direction d3, the outgoing cable switch position 13 is located on one side of the first cable management cover plate 102, and the meter position 11 is located on the other side of the first cable management cover plate 102. Further, in the base unit, in direction d3, the incoming cable switch position 12 and the outgoing cable switch position 13 are located on one side of the first cable management cover plate 102, and the meter position 11 is located on the other side of the first cable management cover plate 102.

[0177] Specifically, the projection direction of the plug-in base is the orthogonal projection of direction d1, the projection direction of the base unit is the orthogonal projection of direction d1, and the projection direction of the copper busbar circuit structure is the orthogonal projection of direction d1. In the same base unit, the first segments 1201 of each second copper busbar overlap, the first segments 1301 of each third copper busbar overlap, the first segments 1201 and 1301 of the second copper busbar overlap at least partially, the second connecting terminals 32 on the incoming side (i.e., the second connecting terminals of the incoming switch) overlap, the first connecting terminals 41 on the outgoing side (i.e., the first connecting terminals of the outgoing switch) overlap, the second connecting terminals 42 on the outgoing side (i.e., the second connecting terminals of the outgoing switch) overlap, the first connecting terminals 41 and the second connecting terminals 42 on the outgoing side are arranged side by side at intervals along direction d3, and the connecting terminals of the meter connecting terminal group 20 overlap, i.e., the meter incoming connecting terminal 21 and the meter outgoing connecting terminal 22 overlap.

[0178] Furthermore, the second connecting terminal 32 on the inlet side overlaps with the first connecting terminal 41 on the outlet side; or, the second connecting terminal 32 on the inlet side, the first connecting terminal 41 on the outlet side, and the second connecting terminal 42 on the outlet side are arranged side by side with intervals along direction d3. In the plug-in base of the first embodiment, the second connecting terminal 32 on the inlet side overlaps with the first connecting terminal 41 on the outlet side.

[0179] In other embodiments, the plug-in base does not have a second copper busbar 120 and a third copper busbar 130. Instead, the corresponding second connection terminals of the incoming line switch and the incoming line connection terminal 21 of the meter are electrically connected through a second intermediate wire, and the corresponding outgoing line connection terminal 22 of the meter is electrically connected to the first connection terminal of the outgoing line switch through a third intermediate wire. The second and third intermediate wires are preferably wires with their own insulation. Alternatively, the second connection terminal of the incoming line switch is independent of the second copper busbar 120. One end of the second copper busbar 120 is connected and electrically connected to the corresponding incoming line connection terminal 21 of the meter, and the other end is connected and electrically connected to the corresponding second connection terminal of the incoming line switch. The first connection terminal of the outgoing line switch is independent of the third copper busbar 130. One end of the third copper busbar 130 is connected and electrically connected to the corresponding outgoing line terminal 22 of the meter, and the other end is connected and electrically connected to the corresponding first connection terminal of the outgoing line switch.

[0180] like Figure 1-2 As shown in Figures 21-24 and 28, the mounting position group also includes a cable outlet position 16, with the cable outlet switch position 13 and the cable outlet position 16 being configured one-to-one; the terminal group also includes a cable outlet connection terminal group disposed within the cable outlet position 16, the cable outlet connection terminal group including an external cable outlet terminal 80 configured one-to-one with the second connection terminal of the cable outlet switch and electrically connected, and each external cable outlet terminal 80 is also used to connect and electrically connect with an external conductor of the cable outlet.

[0181] Specifically, in the base unit, the outgoing cable position 16 and the outgoing switch position 13 are arranged side by side along direction d3. The outgoing cable position 16 and the meter position 11 are located on both sides of the outgoing switch position 13 along direction d3. Each external outgoing cable terminal 80 is arranged side by side at intervals along direction d1. Furthermore, the outgoing cable position 16 is provided with an outgoing cable chamber 18 corresponding to each external outgoing cable terminal 80. Adjacent outgoing cable chambers 18 are separated by outgoing cable terminal partitions, and the external outgoing cable terminals 80 are disposed within their respective outgoing cable chambers 18. Furthermore, the outgoing cable terminal partition and the base 10 are either an integral structure or a separate structure.

[0182] like Figure 4-5 As shown in Figures 23-25, the copper busbar circuit structure also includes a fourth copper busbar 140. The fourth copper busbar 140 is configured to correspond one-to-one with the second connection terminal of the outgoing switch. One end of the fourth copper busbar 140 serves as the second connection terminal 42 on the outgoing side, and the other end is used to cooperate with the corresponding external outgoing terminal 80 (for example, this end of the fourth copper busbar 140 is directly electrically connected to the external outgoing terminal 80, or the two cooperate to clamp the external conductor of the outgoing line).

[0183] Specifically, the fourth copper busbar 140 includes a fourth copper busbar head section 1401 and a fourth copper busbar tail section 1402 connected in sequence. The fourth copper busbar head section 1401 serves as the second connection terminal 42 on the outgoing side, and the fourth copper busbar tail section 1402 is electrically connected to the corresponding external outgoing terminal 80.

[0184] Specifically, the base 10 further includes a cable outlet cover assembly 107 that is stacked and fixedly connected to the base body 101 along direction d2. The cable outlet cover assembly 107 corresponds one-to-one with the cable outlet positions 16. The projection direction of the insertion base is the orthogonal projection of direction d2, and the projection direction of the base unit is also the orthogonal projection of d2. In the same base unit, the tail section 1402 of the fourth copper busbar and the cable outlet connection terminal group are covered by the cable outlet cover assembly 107. The cable outlet cover assembly 107 reduces the exposed portion of the fourth copper busbar 140, improving safety and aesthetics. Furthermore, in the base unit, the base body 101, the first cable management cover 102, and the cable outlet cover assembly 107 cooperate to form a cable outlet switch cavity into which the cable outlet switch 930 is inserted along direction d2. Furthermore, the first cable management cover 102 is provided with a first cable management cover sidewall extending along direction d2, and the cable outlet cover group 107 is provided with a cable outlet cover group sidewall extending along direction d2. The first cable management cover sidewall and the cable outlet cover group sidewall are arranged opposite to each other along direction d3. Furthermore, the cable outlet cover group 107 includes a first cable outlet cover 1071 and a second cable outlet cover 1072. The first cable outlet cover 1071 and the second cable outlet cover 1072 are arranged sequentially along direction d3. The second connection terminal 42 on the cable outlet side passes through the first cable outlet cover 1071 and protrudes into the cable outlet switch position 13. The tail section 1402 of the fourth copper busbar is blocked by the first cable outlet cover 1071, and the external connection cable outlet terminal 80 is blocked by the first cable outlet cover 1071 and the second cable outlet cover 1072.

[0185] In another embodiment, the plug-in base does not have a fourth copper busbar 140, and the second connection terminal of the outgoing switch is independent of the fourth copper busbar 140. The corresponding second connection terminals of the outgoing switch and the external outgoing terminal 80 are electrically connected through a fourth intermediate wire. The fourth intermediate wire is preferably a wire with its own insulation sheath.

[0186] The base 10 is provided with fourth copper busbar holes (not shown in the figure) that correspond one-to-one with the fourth copper busbar 140. The fourth copper busbar 140 is set in the corresponding fourth copper busbar hole, so that the fourth copper busbar 140 can be reliably positioned and the insulation performance between adjacent fourth copper busbars 140 can be guaranteed.

[0187] Specifically, the fourth copper busbar hole is formed by the cooperation of the first cable outlet cover plate 1071 and the base body 101.

[0188] like Figure 1-2 As shown in Figures 21-24 and 28, the incoming line switch connection terminal group also includes an incoming line switch first connection terminal disposed in the incoming line switch position 12. The incoming line switch first connection terminal and the incoming line switch second connection terminal are disposed in a one-to-one correspondence. The incoming line switch first connection terminal is used to plug into and electrically connect to the incoming line terminal of the incoming line switch 920.

[0189] Specifically, the incoming line side connection terminal group 30 also includes an incoming line side first connection terminal 31 fixedly mounted on the base 10 and located in the incoming line switch position 12. The incoming line side first connection terminal 31 serves as the first connection terminal of the incoming line switch and is used for one-to-one plug-in electrical connection with the incoming line wiring terminal of the incoming line switch 920 (that is, the external wiring terminal corresponding to the incoming line side first connection terminal 31).

[0190] Specifically, one end of the first connecting terminal of the incoming line switch protrudes into the incoming line switch position 12 and is a male-type connecting terminal, while the corresponding incoming line terminal of the incoming line switch 920 is a female-type terminal. Both the first connecting terminal of the incoming line switch and the incoming line terminal of the incoming line switch 920 can be implemented using existing technology, and will not be described in detail here.

[0191] In another embodiment of the first connection terminal of the incoming line switch, the first connection terminal of the incoming line switch is a female type connection terminal, and the corresponding incoming line terminal of the incoming line switch 920 is a male type terminal.

[0192] like Figure 1-3 As shown in Figures 21-25, in this embodiment, the first connection terminal 31 (first connection terminal of the incoming switch) and the second connection terminal 32 (second connection terminal of the incoming switch) on the incoming side are respectively plugged into and electrically connected to the incoming wiring terminal and the outgoing wiring terminal of the incoming switch 920 along direction d2.

[0193] like Figure 1-2 As shown in Figures 21-24 and 28, the mounting position group also includes an inlet position 15 disposed on the base 10, with each inlet position 15 corresponding to an inlet switch position 12; the terminal group also includes an inlet connection terminal group disposed within the inlet position 15, the inlet connection terminal group including an external inlet terminal 70 that corresponds to and is electrically connected to the first connection terminal of the inlet switch, each external inlet terminal 70 being arranged side by side at intervals along direction d1, and each external inlet terminal 70 being used to connect to and be electrically connected to an external inlet conductor.

[0194] Specifically, in the base unit, the inlet position 15 and the inlet switch position 12 are arranged side by side along direction d3. The inlet position 15 and the meter position 11 are respectively located on both sides of the inlet switch position 12 along direction d3. The external connection terminals 70 are arranged side by side at intervals along direction d1. The inlet position 15 and the outlet position 16 are arranged sequentially along direction d1. Further, the inlet position 15 and the outlet position 16 are arranged side by side along direction d1, or the inlet position 15 is arranged closer to the meter position 11 relative to the outlet position 16 in direction d3, or the inlet position 15 is arranged farther away from the meter position 11 relative to the outlet position 16 in direction d3. Further, the inlet position 15 is provided with an inlet chamber 17 corresponding to the external connection terminals 70 one by one. Adjacent inlet chambers 17 are separated by inlet terminal partitions, and the external connection terminals 70 are located in the corresponding inlet chamber 17. Furthermore, the incoming line terminal block and the base 10 are either an integral or separate structure.

[0195] Specifically, the copper busbar circuit structure also includes a first copper busbar 110, and the first copper busbar 110, the external connection terminal 70, and the first connection terminal of the incoming switch are arranged one-to-one. One end of each first copper busbar 110 serves as the first connection terminal 31 on the incoming side, and the other end is used to cooperate with the corresponding external connection terminal 70 (for example, this end of the first copper busbar 110 is directly electrically connected to the external connection terminal 70 or the two cooperate to clamp the external conductor of the incoming line).

[0196] Specifically, the base 10 further includes an inlet cover plate assembly 106 stacked with the base body 101 along direction d2. The inlet cover plate assembly 106, the inlet position 15, and the inlet switch position 12 are arranged in a one-to-one correspondence. The projection direction of the plug-in base is an orthogonal projection of direction d2, and the projection direction of the base unit is an orthogonal projection of d2. The inlet cover plate assembly 106 covers the part of the first copper busbar 110 except for the first connection terminal 31 on the inlet side and the inlet connection terminal group. Further, the first copper busbar 110 includes a first copper busbar head section 1101 and a first copper busbar tail section 1102 connected in sequence. The first copper busbar head section 1101 serves as the first connection terminal 31 on the inlet side, and the first copper busbar tail section 1102 is electrically connected to the corresponding external inlet terminal 70. Further, the first copper busbar head section 1101 extends along direction d2, and the first copper busbar tail section 1102 extends along direction d3, and the two are connected at right angles. Furthermore, in the base unit, the base body 101, the first cable management cover plate 102, and the cable inlet cover plate assembly 106 cooperate to form an inlet switch cavity for inserting the inlet switch 920 along direction d2. Furthermore, the inlet cover plate assembly 106 includes an inlet cover plate assembly sidewall extending along direction d2, and the inlet cover plate assembly sidewall is disposed opposite to the first cable management cover plate sidewall of the first cable management cover plate 102 along direction d3. Furthermore, the incoming line cover assembly 106 includes a first incoming line cover 1061 and a second incoming line cover 1062 arranged sequentially along direction d3. The first connecting terminal of the incoming line switch (i.e., the first section 1101 of the first copper busbar) passes through the first incoming line cover 1061 and protrudes into the incoming line switch position 12. The projection direction of the plug-in base is an orthogonal projection of direction d2 and the projection direction of the base unit is an orthogonal projection of d2. The portion of the first copper busbar 110 other than the first connecting terminal of the incoming line switch is blocked by the first incoming line cover 1061, and the external connection incoming line terminal 70 is blocked by the first incoming line cover 1061 and the second incoming line cover 1062.

[0197] In other embodiments, the plug-in base does not have a first copper busbar 110, and the first connection terminal of the incoming line switch is independent of the first copper busbar 110. The corresponding first connection terminals of the incoming line switch and the external incoming line terminal 70 are electrically connected through a first intermediate wire. The first intermediate wire is preferably a wire with its own insulation sheath.

[0198] The base 10 is provided with first copper busbar holes (not shown in the figure) that correspond one-to-one with the first copper busbars 110. The first copper busbars 110 are set in the corresponding first copper busbar holes, which can not only realize the reliable positioning of each first copper busbar 110, but also ensure the insulation performance between adjacent first copper busbars 110.

[0199] Specifically, the first copper busbar hole is formed by the cooperation of the first inlet cover plate 1061 and the base body 101.

[0200] like Figure 1-2 As shown, the base 10 also includes a partition 19 disposed between the inlet position 15 and the outlet position 16 to separate the inlet position 15 and the outlet position 16. In the direction d3, one end of the partition 19 protrudes from the side of the external connection inlet terminal 70 and the external connection outlet terminal 80, which is the end where the external conductor 86 is inserted, to prevent unauthorized personnel from directly connecting the external connection inlet terminal 70 and the external connection outlet terminal 80 together to steal electricity.

[0201] like Figure 3 and 21 As shown, in the first embodiment of the plug-in base, the base unit further includes a sampling device 950 disposed in the base 10. The sampling device 950 includes a sampling circuit board 955 and a sampling element, which is used for electrical parameters and / or environmental parameters.

[0202] Specifically, the sampling element includes at least one of a current sampling element 956, a residual current transformer 957, a temperature sensor, and a voltage sensor; each of the current sampling elements 956 is used to collect the current of each phase of the electrical circuit; each of the voltage transformers is used to collect the voltage of each phase of the electrical circuit; the residual current transformer 957 is used to detect the residual current in the electrical circuit; the temperature sensor is used to collect the temperature in the environment (e.g., metering box) where the plug-in base is located and / or the temperature of at least some of the connecting terminals of the terminal group (i.e., the meter connection terminal group 20, the incoming line connection terminal group 30, the outgoing line connection terminal group 40, the incoming line connection terminal group and the outgoing line connection terminal group). Furthermore, the current sampling element 956 is preferably a Rogowski coil current transformer, which is sleeved on the middle section 1302 of the third copper busbar of the corresponding third copper busbar 130; the remaining current transformer 957 is sleeved on the tail section 1402 of the fourth copper busbar of all the fourth copper busbars 140; the plane of the sampling circuit board 955 is perpendicular to direction d2; and the voltage transformer is disposed on the sampling circuit board 955.

[0203] In another embodiment, the current sampling element 956 is a Rogowski coil current transformer, which is mounted on the corresponding fourth copper busbar 140; the remaining current transformer 957 is mounted on the middle section 1302 of all the third copper busbars.

[0204] In other embodiments, the current sampling element 956 may also be a manganese-copper shunt connected in series with the third copper busbar 130 or the fourth copper busbar 140.

[0205] Specifically, the plane containing the sampling circuit board 955 is perpendicular to direction d2. Alternatively, at least a portion of the sampling circuit board 955 is located in direction d3 between the first connection terminal 41 and the second connection terminal 42 on the outgoing side. Alternatively, the sampling circuit board 955 is located on one side of the incoming switch position 12 or the outgoing switch position 13 in direction d2. Alternatively, the sampling circuit board 955 is located on one side of the incoming switch position 12 and the outgoing switch position 13 in direction d2.

[0206] like Figure 1-3 As shown, in the first embodiment of the plug-in base, the base unit further includes a control module connection terminal group 50 fixedly mounted on the base 10. Each connection terminal of the control module connection terminal group 50 is used to plug into and electrically connect with each wiring terminal of the control module 940, thereby providing operating power to the control module 940. Furthermore, the control module connection terminal group 50 is electrically connected to the outgoing line side connection terminal group 40.

[0207] Specifically, one end of each connection terminal of the control module connection terminal group 50 protrudes into the outgoing switch position 13 and is used to insert into the control module 940 for electrical connection with each wiring terminal of the control module 940. The control module connection terminal group 50 and the outgoing side connection terminal group 40 are arranged side by side at intervals along direction d1. In the plug-in base of the first embodiment, the connection terminals of the control module connection terminal group 50 are preferably male plug-in terminals, and the wiring terminals of the control module 940 are preferably female plug-in terminals. Figure 6 As shown, the control module 940 also includes a control module wiring terminal 947, which is electrically connected to the control circuit board 942 and plugged into the connection terminal of the control module connection terminal group 50.

[0208] In another embodiment, the connection terminals of the control module connection terminal group 50 are female plug-in terminals, and the wiring terminals of the control module 940 are male plug-in terminals. Each connection terminal of the control module connection terminal group 50 and each wiring terminal of the control module 940 can be implemented using existing technology.

[0209] The first embodiment of the plug-in base includes a communication connection terminal (not shown in the figure) disposed within the outgoing switch position 13. The communication connection terminal is connected to the sampling circuit board 955 of the sampling device 950 and is used to plug into the communication terminal of the control module 940 so that the control module 940 can receive the sampling signal acquired by the sampling device 950. Furthermore, the communication connection terminal and the control module connection terminal group 50 are either an integrated structure or a separate structure.

[0210] like Figure 11-20 As shown, in the first embodiment of the plug-in base, the base unit further includes a wiring device, and the following is a first embodiment of the wiring device.

[0211] The wiring device of the first embodiment includes an external connection terminal and a wiring position indication mechanism. The external connection terminal is either an external inlet terminal 70 or an external outlet terminal 80. The external connection terminal includes a terminal block 731, which has a wiring hole for an external conductor 86 (i.e., an inlet external conductor or an outlet external conductor) to be inserted along direction d3. The wiring position indication mechanism includes an indication engagement structure 773 and a second elastic reset member 762 that are in drive cooperation with the external conductor 86. The indication engagement structure 773 has a first position and a second position. When the external conductor 86 is inserted into the wiring hole and reaches a preset position (i.e., the length of the external conductor 86 inserted into the wiring hole reaches a preset length, or the depth of the external conductor 86 inserted into the wiring hole reaches a predetermined depth), the indication engagement structure 773 is driven by the external conductor 86 to move from the first position to the second position. That is, at the same time that the external conductor 86 is inserted into the wiring hole and reaches the preset position, the external conductor 86 drives the indication engagement structure 773 to move from the first position to the second position. When the indicating engagement structure 773 is in the second position, the wiring positioning indicator mechanism provides a positioning indication signal. The second elastic reset member 762 acts on the indicating engagement structure 773, causing it to tend to move towards the first position; that is, when the external conductor 86 is removed, the second elastic reset member 762 acts on the indicating engagement structure 773, causing it to move from the second position to the first position. The external conductor 86 is preferably a rigid wire, such as a copper rigid wire, an aluminum rigid wire, or other alloy rigid wire.

[0212] The wiring device has an in-place indicator mechanism that can accurately reflect whether the external conductor 86 is properly inserted into the wiring hole, thereby avoiding the problem of unreliable connection and / or poor conductivity (e.g., loose connection) between the external wiring terminal and the external conductor 86 due to improper insertion of the external conductor 86.

[0213] The arrival indication signal includes a photoelectric signal; such as... Figure 11-12 As shown in 14 and 16, the wiring position indication mechanism also includes a position monitoring element 771, which emits a position indication signal when triggered by the indication mating structure 773 that moves to the second position.

[0214] Specifically, the position monitoring element 771 is a micro switch. Furthermore, the position monitoring element 771 is connected to the sampling circuit board 955 of the sampling device 950.

[0215] As another embodiment of the position monitoring element 771, the position monitoring element 771 is a position detector (e.g., a photoelectric position sensor). When the position detector detects that the indicating mating structure 773 has moved to the second position, it indicates that the external conductor 86 has been inserted into place.

[0216] The positioning indication signal includes a marker display status change signal that can be directly observed by the operator. For example, a portion of the indicating mating structure 773 can always be observed by the operator when the external conductor 86 is not inserted into the wiring hole or is not fully inserted. When the external conductor 86 is fully inserted, the indicating mating structure 773 moves to the second position, and that portion of the indicating mating structure 773 becomes completely invisible. Alternatively, the indicating mating structure 773 has two indicator marks, corresponding to the first and second positions of the indicating mating structure 773, respectively. When the indicating mating structure 773 is in the first position, the first mark can be fully observed by the operator and the second mark is completely invisible to the operator. When the indicating mating structure 773 is in the second position, the second mark can be fully observed by the operator and the first mark is completely invisible to the operator.

[0217] like Figure 11-12 As shown in 16-20, the indicator and mating structure 773 is moved as a whole and switches between a first position and a second position by moving as a whole.

[0218] Specifically, the indicating and mating structure 773 is moved as a whole along direction d3, that is, the indicating and mating structure 773 is moved as a whole in a straight line along direction d3.

[0219] As another embodiment of the movement mode of the indicated mating structure 773, the indicated mating structure 773 is moved as a whole along a curve (e.g., an arc) or rotated.

[0220] like Figure 11-12 As shown in Figures 16-20, the second elastic reset member 762 is a compression spring, one end of which is fixedly installed (for example, this end is fitted with the base 10 for fixed installation) and the other end is fitted with the indicator engagement structure 773.

[0221] As another embodiment of the second elastic reset member 762, the second elastic reset member 762 is a tension spring, a spring sheet, or a torsion spring, or other elastic members that meet the functional requirements. Those skilled in the art can replace them according to actual needs, and they will not be listed one by one here.

[0222] like Figure 11-16 The diagram shows a second embodiment of the wiring device, which differs from the wiring device in the following ways:

[0223] like Figure 11-16As shown, the external connection terminal also includes an operating component and a terminal block 74. The operating component includes a terminal block 731, which is movable along direction d2. The terminal block 74 is inserted into the terminal block 731 along direction d3 and is used to connect to the internal circuit of the electrical device to which the wiring device belongs (the internal circuit of the electrical device refers to the circuit outside the wiring device that is electrically connected to the terminal block 74; the wiring device is part of the electrical device, such as the fourth copper busbar 140 or the first copper busbar 110 of the plug-in base). When the external connection terminal is used as an external connection inlet terminal 70, the terminal block 74 is electrically connected to the first copper busbar 110. When the external connection terminal is used as an external connection outlet terminal 80, the terminal block 74 is electrically connected to the first copper busbar 110. The fourth copper busbar 140 is electrically connected; a wiring hole is formed on each side of the terminal block 74, and the two wiring holes are arranged side by side along direction d2 and are respectively the first wiring hole 791 and the second wiring hole 792; the terminal block 74 includes a first wiring layer 741 and a second wiring layer 742 that are stacked together along direction d2 and are made of different materials, the first wiring layer 741 is arranged facing the first wiring hole 791 and the second wiring layer 742 is arranged facing the second wiring hole 792; the first wiring layer 741 cooperates with the operating component to press the external conductor 86 inserted into the first wiring hole 791, and the second wiring layer 742 cooperates with the operating component to press the external conductor 86 inserted into the second wiring hole 792.

[0224] The structural design of the external connection terminal and the terminal block 74 allows the external connection terminal to be connected to external conductors 86 of different materials, thereby broadening the application scenarios of the wiring device. The application of the wiring device in the plug-in base also improves the compatibility of the plug-in base.

[0225] Specifically, the terminal block 731 has a square frame structure, including a front wall and a rear wall of the terminal block arranged opposite each other along direction d2, and two side walls of the terminal block arranged opposite each other along direction d1. The front wall of the terminal block is opposite to the first wiring layer 741, and the bottom wall of the terminal block is opposite to the second wiring layer 742. The front wall, the two side walls, and the first wiring layer 741 cooperate to form a first wiring hole 791, and the rear wall, the two side walls, and the second wiring layer 742 cooperate to form a second wiring hole 792. Further, the terminal block 731 is a copper wiring frame, an aluminum alloy wiring frame, or an aluminum wiring frame, etc.

[0226] Specifically, the first wiring layer 741 is a copper wiring layer, and the second wiring layer 742 is an aluminum wiring layer. That is, the external connection terminal can be used to connect to either the copper external conductor 86 or the aluminum external conductor 86. Furthermore, the first wiring layer 741 and the second wiring layer 742 are laminated together in parallel.

[0227] like Figure 13-16As shown, the wiring device of the second embodiment further includes a first elastic reset member 761; the terminal block 731 has two wiring positions, namely a first wiring position and a second wiring position; the terminal block 731 switches between the two wiring positions by moving along direction d2; the first elastic reset member 761 acts on the terminal block 731 to keep it in the first wiring position. When the terminal block 731 is in the first wiring position, the diameter of the first wiring hole 791 is larger than the diameter of the second wiring hole 792, thereby allowing the external conductor 86 to be smoothly inserted into the first wiring hole 791. At this time, the first elastic reset member 761 is in a released state; in actual use, when the terminal block 731 is in the first wiring position, the diameter of the first wiring hole 791 is much larger than the diameter of the second wiring hole 792, and the diameter of the second wiring hole 792 becomes too small to be used for wiring. When the terminal block 731 is in the second wiring position, the diameter of the first wiring hole 791 is smaller than the diameter of the second wiring hole 792, thereby allowing the external wire 86 to be smoothly inserted into the second wiring hole 792. At this time, the first elastic reset member 761 is in an energy storage state. In actual use, when the terminal block 731 is in the second wiring position, the diameter of the second wiring hole 792 is much larger than the diameter of the first wiring hole 791, and the diameter of the first wiring hole 791 becomes too small to be used for wiring.

[0228] Specifically, the first elastic reset member 761 is a compression spring. When the terminal block 731 moves from the first wiring position to the second wiring position, it compresses the first elastic reset member 761 to store energy. Furthermore, one end of the first elastic reset member 761 cooperates with the terminal block 731, and the other end cooperates with the wiring device housing 81 of the wiring device.

[0229] As another embodiment of the first elastic reset member 761, the first elastic reset member 761 is a tension spring, a serpentine spring sheet, or a torsion spring, or other elastic components that meet the functional requirements. Those skilled in the art can replace them according to actual needs, and they will not be listed one by one here.

[0230] like Figure 11-12 As shown in Figures 14 and 16, the operating assembly further includes a wiring screw, which is threadedly connected to the terminal block 731. One end of the wiring screw is inserted into the first wiring hole 791 and is used to cooperate with the terminal block 731 and the terminal plate 74 to press the external conductor 86 inserted into the first wiring hole 791 or the external conductor inserted into the second wiring hole 792. Further, the external connection terminal also includes a pressure plate 753, which is inserted into the first wiring hole 791 and opposite to the terminal plate 74. The wiring screw is rotatably connected to the pressure plate 753, and when the wiring screw is tightened by external force, the wiring screw and the pressure plate 753 rotate relative to each other.

[0231] Specifically, the external connection terminal includes two terminal screws, namely a first terminal screw 71 and a second terminal screw 72, both of which are rotatably connected to the pressure plate 753. They are arranged side-by-side and spaced apart along direction d3 (i.e., the extension direction of the first terminal hole 791 and the second terminal hole 792). The first terminal screw 71 and the second terminal screw 72 work together to clamp the external conductor 86, further improving the reliability of the connection between the external conductor 86 and the external connection terminal. Furthermore, the wiring device housing 81 of the wiring device also has a first operating hole 831 and a second operating hole 832, with the operating ends of the first terminal screw 71 and the second terminal screw 72 slidably disposed within the first operating hole 831 and the second operating hole 832, respectively.

[0232] like Figure 11-14 As shown in Figure 16, the wiring device of the second embodiment further includes a wiring device housing 81 for accommodating external connection terminals. The wiring device housing 81 includes a first opening 821 that mates with the first wiring hole 791 and a second opening 822 that mates with the second wiring hole 792. The first opening 821 is used for the corresponding external conductor 86 to pass through and be inserted into the first wiring hole 791, and the second opening 822 is used for the corresponding external conductor 86 to pass through and be inserted into the second wiring hole 792.

[0233] Specifically, the wiring device housing 81 is formed by the base 10 (e.g., the side walls of the inlet chamber 17 and the outlet chamber 18), or by a structure independent of the base 10 but fixedly fitted to it. The wiring device housing 81 has a terminal cavity 84, and the external connection terminal is located within the terminal cavity 84. The first elastic reset member 761 acts on the terminal block 731, limiting its engagement with the side wall of the terminal cavity 84 and holding the terminal block 731 in the first wiring position. At this time, the first elastic reset member 761 is in a released state. The operator uses a tool (e.g., a screwdriver) to press the wiring screw, driving the terminal block 731 to overcome the force of the first elastic reset member 761 and move it from the first wiring position to the second wiring position, thus switching the first elastic reset member 761 to an energy storage state. Figure 11-16As shown, the wiring device in the second embodiment further includes a first baffle 751 and a second baffle 752; when the terminal block 731 switches between a first wiring position and a second wiring position, the first baffle 751 and the second baffle 752 move synchronously with the terminal block 731; when the terminal block 731 is in the first wiring position, the first baffle 751 avoids the first opening 821, allowing the external conductor 86 to pass through the first opening 821 and be inserted into the first wiring hole 791, while the second baffle 752 blocks the second opening 822, preventing the external conductor 86 from passing through. The second opening 922 allows insertion into the second wiring hole 792 and prevents the operator from accidentally touching the terminal block 731 through the second opening 822. When the terminal block 731 is in the second wiring position, the second baffle 752 avoids the second opening 822, allowing the external conductor 86 to pass through the second opening 822 and be inserted into the second wiring hole 792. The first baffle 751 blocks the first opening 821, preventing the external conductor 86 from passing through the first opening 821 and being inserted into the first wiring hole 791, and also preventing the operator from accidentally touching the terminal block 731 through the first opening 821. When the terminal block 731 is in a certain wiring position, only the corresponding wiring hole is open to allow the external conductor 86 to be inserted, thereby preventing the operator from making incorrect wiring. Furthermore, the wiring device of the second embodiment also includes a first indicating structure. The first indicating structure includes two sets of indicating marks respectively disposed on the first baffle 751 and the second baffle 752. The two sets of indicating marks are used to indicate the material of the wiring layer corresponding to the wiring hole into which the external conductor 86 can be inserted (that is, the wiring hole corresponding to the opening of the unobstructed wiring device housing 81), further prompting the operator to avoid the operator inserting the copper external conductor 86 into the second wiring hole 791 or inserting the aluminum external conductor 86 into the first wiring hole 791.

[0234] Specifically, the first baffle 751 is fixedly connected to the wire clamping plate 753; the second baffle 752 is fixedly connected to the terminal block 731. Of course, the first baffle 751 can also be configured to be fixedly connected to the terminal block 731, which is easily achievable by those skilled in the art using conventional techniques; alternatively, the second baffle 752 includes a second baffle mating part, which abuts against the terminal block 731 under the action of the first elastic reset member 761, so that the second baffle 752 and the terminal block 731 move synchronously. Furthermore, both the first baffle 751 and the second baffle 752 are insulating baffles.

[0235] like Figure 13 , 15As shown in Figure 21, the wiring device of the second embodiment further includes a second indicator structure. The second indicator structure includes a first indicator part 851 and a second indicator part 852 disposed on the wiring device housing 81. The first indicator part 851 and the second indicator part 852 are respectively disposed corresponding to the first opening 821 and the second opening 822, and are used to indicate the material of the wiring layer (that is, the wiring layer corresponding to the first wiring hole 791 and the second wiring hole 792) corresponding to the first opening 821 and the second opening 822.

[0236] Specifically, the first indicator 851 and the second indicator 852 are both protruding along direction d3 (i.e., the direction in which the external conductor 86 is inserted into the first wiring hole 791 and the second wiring hole 792). The first indicator 851 is closer to the side of the wiring device facing the operator than the second indicator 852. The length of the protrusion of the first indicator hole 851 is less than the length of the protrusion of the second indicator hole 852. The first opening 821, the first indicator 851, the second opening 822, and the second indicator 852 are arranged sequentially along direction d2 (i.e., the sliding direction of the terminal block 731). The first indicator 851 is located between the first opening 821 and the second opening 822. The first indicator 851 and the second indicator 852 are located on both sides of the second opening 822. The side of the first indicator 851 and the second indicator 852 facing the operator is provided with indicator marks. The two sets of indicator marks are used to indicate the material of the wiring layer corresponding to the first opening 821 and the second opening 822, respectively.

[0237] In another embodiment of the arrangement of the first indicator 851 and the second indicator 852, in the direction d1, the first indicator 851 is disposed on one side of the first opening 821, and the second indicator 852 is disposed on one side of the second opening 822. The first indicator 851 and the second indicator 852 are preferably located on the same side of the first opening 821 and the second opening 822.

[0238] It should be noted that in the wiring device of the first embodiment, the first indicator structure and the second indicator structure can be provided simultaneously, or one of them can be provided—that is, only the first indicator structure is provided without the second indicator structure, or only the second indicator structure is provided without the first indicator structure.

[0239] like Figure 11-12As shown in Figures 14 and 16, in the wiring device of the second embodiment, the indicating engagement structure 773 includes an engagement structure driven plate 772 for engaging with an external conductor 86. The engagement structure driven plate 772 is driven by the external conductor 86 to move the indicating engagement structure 773 from a first position to a second position. In the direction d3, one end of the wiring hole allows the external conductor 86 to be inserted, and the engagement structure driven plate 772 is disposed on one side of the other end of the wiring hole. Further, the engagement structure driven plate 772 includes a driven plate clearance hole 780 for a wiring plate 74 to pass through, and one end of the wiring plate 74 passes through the driven plate clearance hole 780 to be electrically connected to the internal circuit of the electrical device to which the wiring device belongs. Furthermore, the second elastic reset member 762 acts on the mating structure driven plate 772, causing the indicating mating structure 773 to tend to move towards the first position; that is, when the wiring device is in its initial state—when the external conductor 86 is not inserted into the wiring hole of the external connection terminal and when the external conductor 86 is inserted into the wiring hole of the external connection terminal but not in contact with the mating structure driven plate 772, the second elastic reset member 762 acts on the mating structure driven plate 772 to keep the indicating mating structure 773 in the first position; when the external conductor 86 is inserted into the wiring hole of the external connection terminal and is inserted in place, the external conductor 86 presses against the mating structure driven plate 772 to move the indicating mating structure 773 to the second position; after the external conductor 86 is removed, the force applied by the second elastic reset member 762 to the mating structure driven plate 772 causes the indicating mating structure 773 to move to the first position.

[0240] Specifically, when the indicating mating structure 773 is in the first position, the second elastic reset member 762 causes the mating structure driven plate 772 to abut against the terminal block 731, thereby keeping the indicating mating structure 773 in the first position.

[0241] Specifically, the second elastic reset member 762 is a compression spring, one end of which engages with the driven plate 772 of the mating structure, and the other end engages with the wiring device housing 81. Further, one end of the driven plate 772 engages with the second elastic reset member 762, and the other end engages with the position monitoring element 771. Further, the second elastic reset member 762 and the position monitoring element 771 are located on opposite sides of the wiring plate 74 in direction d2 and on the same side of the driven plate 772 in direction d3. Further, the wiring device also includes a guide structure for defining the movement trajectory of the driven plate 772 of the mating structure. The guide structure can be implemented using existing technology and will not be described in detail here.

[0242] It should be noted that the wiring device of the second embodiment can be used without a wiring position indicator mechanism.

[0243] like Figure 17-20The diagram shows a third embodiment of the wiring device, which differs from the wiring device of the first embodiment in that:

[0244] like Figure 17-20 As shown, the wiring device of the third embodiment also includes an external connection terminal, which includes a terminal block 731 and a connection screw. The terminal block 731 is provided with a third connection hole 794 extending in the direction d3. There is one third connection hole 794, that is, the external conductor 86 is inserted into the terminal block 731 in the direction d3. The connection screw is threaded to the terminal block 731 and one end is inserted into the third connection hole 794.

[0245] Specifically, the terminal block 731 is made of aluminum alloy.

[0246] Specifically, the wiring device of the third embodiment includes two wiring screws in its external connection terminal, namely a first wiring screw 71 and a second wiring screw 72, which are arranged side by side and spaced apart along direction d3. Both the first wiring screw 71 and the second wiring screw 72 are used to press the external conductor 86 tightly, further improving the reliability of the connection between the external conductor 86 and the terminal block 731.

[0247] like Figure 17-20 As shown, in the wiring device of the third embodiment, the indicating engagement structure 773 of the wiring position indicating mechanism includes an engagement structure blocking part 774. When the indicating engagement structure 773 is in the first position, the engagement structure blocking part 774 blocks the wiring screw (partially or completely blocking it), preventing the operator from operating the wiring screw. When the indicating engagement structure 773 is driven from the first position to the second position by the external conductor 86 inserted into the third wiring hole 794 and in position, the engagement structure blocking part 774 avoids the wiring screw, allowing the operator to operate the wiring screw to engage with the wiring socket 731 to press the external conductor 86 tightly. The engagement structure blocking part 774 can prevent the operator from operating the wiring screw when the external conductor 86 is not yet inserted, and can also visually indicate whether the external conductor 86 is inserted. Further, the indicating engagement structure 773 includes a driven part 778 connected to the engagement structure blocking part 774. The driven part 778 engages with the second elastic reset member 762 and is used for transmission engagement with the external conductor 86. Furthermore, the driven part 778 includes a mating structure insertion part 779, one end of which is inserted into the third wiring hole 794, and is used to drive the indicating mating mechanism 773 to move from the first position to the second position by being pressed by the external conductor 86.

[0248] Specifically, when the indicating mating structure 773 is in the first position, both wiring screws are completely blocked by the mating structure blocking part 774; when the indicating mating structure 773 is in the second position, both wiring screws are avoided by the mating structure blocking part 774, allowing them to be operated by the operator.

[0249] Specifically, the activated part 778 further includes a mating part 775, which is bent and connected to the mating structure shielding part 774 and mates with the second elastic reset member 762. In the direction d3, one end of the third wiring hole 794 allows an external conductor 86 to be inserted therein, and the mating part 775 is located on one side of the other end of the third wiring hole 794. One end of the mating structure insertion part 779 is connected to the mating part 775, and the other end is inserted into the third wiring hole 794. The mating structure insertion part 779 and the mating structure shielding part 774 are spaced apart and both are located on one side of the mating part 775 in the direction d3. The second elastic reset member 762 is located on the other side of the mating part 775 in the direction d3. The mating part 775 has a mating hole 776 through which the wiring part 795 of the connector passes. The mating structure shielding part 774, the mating part 775, and the mating structure insertion part 779 are preferably an integral structure, forming a U-shape. One end of the mating part 775 is bent and connected to the mating structure shielding part 774 and mates with the second elastic reset member 762, and the other end is bent and connected to the mating structure insertion part 779.

[0250] Specifically, the terminal block 731 includes a terminal block body 793 and a terminal block wiring portion 795. The terminal block body 793 and the terminal block wiring portion 795 are preferably an integral structure. The terminal block body 793 is provided with a third wiring hole 794 in the middle. The terminal block wiring portion 795 is used to electrically connect to the internal circuit of the electrical device to which the wiring device belongs (in the second embodiment of the wiring device, when the external connection terminal is used as an external connection inlet terminal 70, the terminal block wiring portion 795 is electrically connected to the first copper busbar 110; when it is used as an external connection outlet terminal 80, the terminal block wiring portion 795 is electrically connected to the fourth copper busbar 140).

[0251] Specifically, the third wiring hole 794 is a circular hole, and the mating structure insertion part 779 is a cylinder.

[0252] like Figure 17-20As shown, the indicating mating structure 773 further includes a mating structure triggering part 777 connected to the mating part 775. The mating structure triggering part 777 is used to trigger the positioning monitoring element 771 when the indicating mating structure 773 is in the second position. Furthermore, both the mating structure triggering part 777 and the mating structure insertion part 779 are connected to one end of the mating part 775 in direction d3, and are located on both sides of the mating part 775 in direction d3. Furthermore, the mating structure triggering part 777 and the mating part 775 are an integral structure.

[0253] It should be noted that in the wiring device of the third embodiment, the mating structure blocking part 774, the mating structure triggering part 777, and the positioning monitoring element 771 can be provided simultaneously; or, only the mating structure blocking part 774 can be provided, without the mating structure triggering part 777 and the positioning monitoring element 771; or, only the mating structure triggering part 777 and the positioning monitoring element 771 can be provided, without the mating structure blocking part 774, and the mating structure insertion part 779 can also be omitted. Preferably, the wiring device of the third embodiment only provides the mating structure blocking part 774 and does not provide the mating structure triggering part 777 and the positioning monitoring element 771.

[0254] In another embodiment, in the wiring device of the third embodiment, the indicating mating structure 773 is rotatably configured. During the process of inserting the external conductor 86 into the third wiring hole 794 until it is fully inserted, the external conductor 86 presses against the driven part 778, causing the indicating mating mechanism 773 to rotate, thereby driving the mating structure blocking part 774 to rotate and avoid the wiring screw. Further, one end of the driven part 778 is rotatably configured and the other end is opposite to the third wiring hole 794. The external conductor 86 presses against the end of the driven part 778 opposite to the third wiring hole 794 to drive the indicating mating structure 773 to rotate.

[0255] The following is a fourth embodiment of the wiring device. The wiring device of the fourth embodiment adopts the wiring position indication mechanism of the wiring device of the second embodiment and the external connection terminal of the wiring device of the third embodiment. That is, the position monitoring element 771, the mating structure driven plate 772, and the terminal block body 793 are arranged sequentially along the direction d3. One end of the third wiring hole 794 is for the insertion of the external conductor 86. The mating structure driven plate 772 is arranged on one side of the third wiring hole 794 and is limited to the terminal block body 793. The wiring part 795 of the terminal block passes through the driven plate clearance hole 780 of the mating structure driven plate 772 and is electrically connected to the internal circuit of the electrical device.

[0256] The following is the fifth embodiment of the wiring device, which differs from the wiring device of the third embodiment in that the indicating mating structure 773 does not have a mating structure shielding part 774.

[0257] The external connection inlet terminal 70 and the external connection outlet terminal 80 may have the same or different structures. In the plug-in base of the first embodiment, the external connection inlet terminal 70 preferably adopts the external connection terminal of the wiring device of the second embodiment, and the external connection outlet terminal 80 preferably adopts the external connection terminal of the wiring device of the third embodiment; or, both the external connection inlet terminal 70 and the external connection outlet terminal 80 adopt the external connection terminal of the wiring device of the second embodiment or the external connection terminal of the wiring device of the third embodiment.

[0258] like Figure 1-2 As shown, in the first embodiment of the plug-in base, the base 10 is further provided with at least one expansion module position 14 for installing an expansion module; the base unit also includes an expansion module connection terminal group 60 fixedly disposed on the base 10, and each connection terminal of the expansion module connection terminal group 60 is used for plugging and electrically connecting with each wiring terminal of the expansion module. Further, when the expansion module needs to draw power from the electrical circuit, that is, when the expansion module needs to obtain working power from the electrical circuit, the expansion module connection terminal group 60 is electrically connected to the incoming line connection terminal group or the incoming line switch connection terminal group. Further, each connection terminal of the expansion module connection terminal group 60 is used for plugging and electrically connecting with each wiring terminal of the expansion module along direction d2, that is, during installation, the expansion module moves along direction d2 so that the wiring terminals of the expansion module are plugged into each connection terminal of the expansion module connection terminal group 60. It should be noted that the plugging direction of each connection terminal of the expansion module connection terminal group 60 and each wiring terminal of the expansion module can be adjusted according to actual needs.

[0259] Specifically, the expansion modules include a data acquisition module and / or a communication module and / or a sensor module, etc. Each module can be selected individually or multiple modules can be configured simultaneously. The sensor module can be an expansion module for collecting ambient temperature and humidity data or an expansion module for detecting smoke, etc. The number of expansion modules is ≥1. The number and function of the expansion modules can be selected by those skilled in the art based on the actual functional design. When the expansion module is a communication module, it is connected to the sampling circuit board 950 of the sampling device 950 to output the signals collected by the sampling device 950.

[0260] Specifically, one end of each connection terminal of the expansion module connection terminal group 60 protrudes within the expansion module position 14 and is used for plugging into and electrically connecting to the wiring terminals of the expansion module; that is, each connection terminal of the expansion module connection terminal group 60 is a male connector, and each wiring terminal of the expansion module is a female connector, and the two are plugged into and electrically connected. It should be noted that, according to actual needs, each connection terminal of the expansion module connection terminal group 60 is set as a female connector, while each wiring terminal of the expansion module is set as a male connector. Furthermore, when the expansion module needs to draw power from the electrical circuit, the expansion module connection terminal group 60 can be electrically connected to the incoming line connection terminal group or the incoming line switch connection terminal group through a copper busbar or other types of wires (e.g., flexible connection).

[0261] Specifically, in the base unit, the expansion module position 14, the inlet switch position 12, and the outlet switch position 13 are arranged side by side along direction d1. It should be noted that the position of the expansion module position 14 is not limited to the one described above. Those skilled in the art can adjust the position of the expansion module position 14 as needed. For example, the expansion module position 14 can be arranged side by side with the meter position 11 along direction d1, or the expansion module position 14 can be located between the meter position 11 and the outlet switch position 13, or the expansion module position 14 can be located between the meter position 11 and the inlet switch position 12, or the expansion module position 14 can be arranged side by side with the inlet position 15 or the outlet position 16 along direction d1, or the expansion module 14 can be located between the inlet position 15 and the outlet position 16 in direction d1.

[0262] like Figure 1-2 As shown, in the first embodiment of the plug-in base, the base unit further includes a meter positioning detection mechanism 91 disposed on the base 10 for detecting whether the electricity meter 910 is properly installed in the meter position 11. Further, the meter positioning detection mechanism 91 is connected to the control module 940 (e.g., connected to the control circuit board 942 of the control module 940). If the meter positioning detection mechanism 91 detects that the electricity meter 910 is not properly installed, it sends a first control signal to the control module 940, and the control module 940 controls the outgoing line switch 930 to open; and / or, if the meter positioning detection mechanism 91 detects that the electricity meter 910 is not properly installed, it issues an alarm signal.

[0263] like Figure 1-2As shown, in the first embodiment of the plug-in base, the base unit further includes an incoming switch positioning detection mechanism 92 disposed on the base 10 and used to detect whether the incoming switch 920 is properly installed in the incoming switch position 12. Further, the incoming switch positioning detection mechanism 92 is connected to the control module 940 (e.g., connected to the control circuit board 942 of the control module 940). If the incoming switch positioning detection mechanism 92 detects that the incoming switch 920 is not properly installed, it sends a second control signal to the control module 940, and the control module 940 controls the outgoing switch 930 to open; and / or, if the incoming switch positioning detection mechanism 92 detects that the incoming switch 920 is not properly installed, it issues an alarm signal.

[0264] like Figure 1-2 As shown, in the plug-in base of the first embodiment, the base unit further includes an outgoing switch positioning detection mechanism 93 disposed on the base 10 and used to detect whether the outgoing switch 930 is installed in the outgoing switch position 13. Further, the outgoing switch positioning detection mechanism 93 is connected to the control module 940 (e.g., connected to the control circuit board 942 of the control module 940). If the outgoing switch positioning detection mechanism 93 detects that the outgoing switch 930 is not installed in place, it sends a third control signal to the control module 940, and the control module 940 controls the outgoing switch 930 to open; and / or, if the outgoing switch positioning detection mechanism 93 detects that the outgoing switch 930 is not installed in place, it issues an alarm signal.

[0265] The base unit is equipped with at least one of the following: a meter arrival detection mechanism 91, an incoming line switch arrival detection mechanism 92, and an outgoing line switch arrival detection mechanism 93. That is, one, any two, or all three of these mechanisms can be selected. It should be noted that the specific methods for the meter arrival detection mechanism 91, the incoming line switch arrival detection mechanism 92, and the outgoing line switch arrival detection mechanism 93 to issue alarm signals and for the control module 940 to drive the outgoing line switch 930 to trip can all be implemented using conventional techniques in the art, and will not be described in detail here.

[0266] If the electricity meter 910 and / or the incoming switch 920 and / or the outgoing switch 930 are installed in the meter position 11 and / or the incoming switch position 920 and / or the outgoing switch position 13 but are not installed in place, the electricity meter 910 and / or the incoming switch 920 and / or the outgoing switch 930 are connected to the circuit, but the corresponding connection terminals and wiring terminals are in a state of loose connection. Long-term operation may cause overheating and damage to the corresponding connection terminals and wiring terminals, or even cause a fire. The plug-in base of the first embodiment can detect whether the electricity meter 910 and / or the incoming switch 920 and / or the outgoing switch 930 are installed in place, thereby ensuring that each electricity meter 910 and / or the incoming switch 920 and / or the outgoing switch 930 is installed in place before being put into use, thus improving safety and reliability.

[0267] Specifically, the meter positioning detection mechanism 91, the incoming line switch positioning detection mechanism 92, and the outgoing line switch positioning detection mechanism 93 can all be implemented using existing technologies. For example, each detection mechanism can be implemented using a micro switch. When the electricity meter 910, the incoming line switch 920, and the outgoing line switch 930 are installed in place, the corresponding micro switch is triggered to switch its working state—for example, switching between a conducting state and an open state, or switching between different conducting states. Alternatively, each detection mechanism may include a position sensor (e.g., a photoelectric position sensor), and the electricity meter 910, the incoming line switch 920, and the outgoing line switch 930 may be detected by their respective position sensors to determine whether they are installed in place.

[0268] Specifically, when the meter placement detection mechanism 91 detects that the electricity meter 910 is not installed in place, it sends an alarm signal through the electricity meter 910 and / or sends an alarm signal to the background control system through an expansion module with communication function; when the incoming line switch placement detection mechanism 92 detects that the incoming line switch 920 is not installed in place, it sends an alarm signal through the electricity meter 910 and / or sends an alarm signal to the background control system through an expansion module with communication function; when the outgoing line switch placement detection mechanism 93 detects that the outgoing line switch 930 is not installed in place, it sends an alarm signal through the electricity meter 910 and / or sends an alarm signal to the background control system through an expansion module with communication function.

[0269] like Figures 39-40As shown, each connection terminal of the meter connection terminal group 20 (including the meter inlet connection terminal 21 and the meter outlet connection terminal 22) has one end for plugging into and electrically connecting to each wiring terminal of the electricity meter 910, and at least a portion of the other end is fixed between the base body 101 of the base 10 and the first cable management cover plate 102, that is, at least a portion of that end of each connection terminal of the meter connection terminal group 20 is covered by the first cable management cover plate 102. The first cable management cover plate 102 is provided with a first shorting hole 1091 and a second shorting hole 1092. The base unit further includes a shorting device 960, which includes a shorting device housing 961 and a shorting member 962 located at least partially within the housing 961. The shorting member 962 includes a first shorting portion 963 and a second shorting portion 964 connected in series, for contacting and electrically connecting with the meter inlet connection terminal 21 and meter outlet connection terminal 22 of the same phase of the energy meter 910. That is, the shorting member 962 is correspondingly and compatible with each phase of the electrical circuit, and the shorting member 962 is connected to the energy meter... Each phase of 910 is configured and electrically connected in a one-to-one correspondence; the meter inlet connection terminal 21, the first shorting part 963, and the first shorting hole 1091 are configured and cooperate in a one-to-one correspondence; the meter outlet connection terminal 22, the second shorting part 964, and the second shorting hole 1092 are configured and cooperate in a one-to-one correspondence; when the shorting device 960 is in the shorting position, the first shorting part 963 contacts and is electrically connected to the corresponding meter inlet connection terminal 21, and the second shorting part 964 contacts and is electrically connected to the corresponding meter outlet connection terminal 22.

[0270] The short-circuiting device 960 can short-circuit the meter inlet connection terminal 21 and meter outlet connection terminal 22 in each phase of the electrical circuit when the electricity meter 910 needs to be replaced or maintained, so that the electricity meter 910 can be removed without power interruption. The short-circuiting device housing 961 can drive multiple short-circuiting components 962 to operate synchronously, improving operating efficiency.

[0271] like Figures 39-40 The diagram shows a first embodiment of the cooperation between the short-circuiting device and the meter inlet terminal group 20:

[0272] One end of the first shorting portion 963 protrudes outside the shorting device housing 961 and is used to pass through the corresponding first shorting hole 1091 to make contact with the corresponding meter inlet connection terminal 21. One end of the second shorting portion 964 protrudes outside the shorting device housing 961 and is used to pass through the corresponding second shorting hole 1092 to make contact with the corresponding meter outlet connection terminal 22. Further, the first shorting portion 963 is used to abut against the meter inlet connection terminal 21 for electrical connection; the second shorting portion 964 is used to abut against the meter outlet connection terminal 22 for electrical connection. In this embodiment, the first shorting portion 963 and the second shorting portion 964 are partially outside the shorting finger 961, therefore the shorting member 962 is partially located within the shorting device housing 961.

[0273] One implementation of the shorting connector 962 is that the shorting connector 962 is an integral metal part, which is formed by bending a metal conductive plate or a columnar metal conductor.

[0274] Another implementation of the shorting connector 962 is as follows: In the shorting connector 962, the first shorting part 963 and the second shorting part 964 are connected together in series by a short wire. The two ends of the shorting wire are respectively welded to the first shorting part 963 and the second shorting part 964 or connected by fasteners, such as screws, bolts or rivets.

[0275] The following is a second embodiment of the cooperation method between the short-circuiting device and the meter connection terminal group 20:

[0276] The shorting member 962 is disposed inside the shorting device housing 961. The shorting device housing 961 has a first housing hole that is configured one-to-one with the first shorting part 963 and a second housing hole that is configured one-to-one with the second shorting part 964. The meter inlet connection terminal 21 includes an inlet terminal shorting part that protrudes through the corresponding first shorting hole 1091 and an outlet terminal shorting part that protrudes through the corresponding second shorting hole 1092. The inlet terminal shorting part is used to make contact and connect with the corresponding first shorting part 963 through the corresponding first housing hole, and the outlet terminal shorting part is used to make contact and connect with the corresponding second shorting part 964 through the corresponding second housing hole. Furthermore, the first shorting part 963 is a female plug-in terminal, and the shorting part of the incoming terminal is a male plug-in terminal. The corresponding first shorting parts 963 are plugged into and electrically connected to the shorting parts of the incoming terminal. The second shorting part 964 is a female plug-in terminal, and the shorting part of the outgoing terminal is a male plug-in terminal. The corresponding second shorting parts 964 are plugged into and electrically connected to the shorting parts of the outgoing terminal.

[0277] In the short-circuiting device 960, the short-circuiting device housing 961 also includes a detection hole corresponding to each short-circuiting component 962. The detection hole is used for inserting a test pen to detect whether the short-circuiting component is energized, so as to prevent the short-circuiting component 962 from failing to short-circuit the corresponding meter inlet connection terminal 21 and meter outlet connection terminal 22, which could cause a power outage when disassembling the electricity meter 910.

[0278] One implementation of the shorting device housing 961 is that the shorting device housing 961 is an injection-molded structure, with parts of each shorting component 962 being injection-molded in the shorting device housing 961, and corresponding detection holes also being formed during the injection molding process.

[0279] Another implementation of the shorting device housing 961 is that the shorting device housing 961 includes two half-shells that are joined together, and the first shorting part 963 and the second shorting part 964 are respectively held by the two half-shells.

[0280] In the first embodiment of the plug-in base, when the short-circuit device 960 is in the short-circuit position, the short-circuit device housing 961 and the corresponding base 10 are in a limiting cooperation to keep the short-circuit device 960 in the short-circuit position, thereby facilitating the operator to perform other operations, such as removing or installing the electricity meter 910.

[0281] like Figure 7-10 As shown and referenced Figure 1-2 As shown in Figures 21-25 and 28, this is the second embodiment of the plug-in base of the present invention.

[0282] like Figure 7-10 As shown, the main difference between the plug-in base of the second embodiment and the plug-in base of the first embodiment lies in the implementation method of the sampling device 950 and the output switch connection terminal group: the sampling device 950 is a module set independently of the base 10, which includes a sampling device housing 958, a sampling device wiring structure, a sampling circuit board 955 set in the sampling device housing 958, and a sampling element connected to the sampling circuit board 955; the sampling device wiring structure includes a first front connection terminal group 951, a first rear connection terminal group 953, a second front connection terminal group 952, and a second rear connection terminal group 954; the first front connection terminal group 951 includes a first front connection terminal, and the first rear connection terminal group 953 includes a first rear connection terminal that is arranged in series with the first front connection terminal; the second front connection terminal group 952 includes a second front connection terminal, and the second rear connection terminal group 954 includes a second rear connection terminal that is arranged in series with the second front connection terminal; the first front connection terminal, the first rear connection terminal, the second front connection terminal, and the second rear connection terminal are all plug-in type connection terminals. Furthermore, the first front connection terminal group 951 and the second front connection terminal group 952 serve as outgoing switch connection terminal groups. Each connection terminal of the first front connection terminal group 951 is used for one-to-one plug-in electrical connection with each outgoing wiring terminal of the outgoing switch 930. Each connection terminal of the second front connection terminal group 952 is used for one-to-one plug-in electrical connection with each outgoing wiring terminal of the outgoing switch 930. Each connection terminal of the first rear connection terminal group 953 is one-to-one plug-in electrical connection with each outgoing side first connection terminal 41. Each connection terminal of the second rear connection terminal group 954 is one-to-one plug-in electrical connection with each outgoing side second connection terminal 42. That is, the first front connection terminal serves as the first connection terminal of the outgoing switch, the first rear connection terminal is plugged into the first connection terminal 41 on the outgoing side, the second front connection terminal serves as the second connection terminal of the outgoing switch, and the second rear connection terminal is plugged into the second connection terminal 42 on the outgoing side.

[0283] The sampling device 950 is configured as an independent module, facilitating its placement and disassembly. Furthermore, the first front connection terminal, the first rear connection terminal, the second front connection terminal, and the second rear connection terminal are all plug-in type terminals, making wiring convenient and quick. It should be noted that the modular design of the sampling device 950 is not limited to metering boxes; it can also be used in other application scenarios, such as control cabinets and power distribution cabinets.

[0284] like Figure 8 and 10 As shown, the first front connection terminal group 951 and the second front connection terminal group 952 are located at one end of the sampling device 950 in direction d2, and the first rear connection terminal group 953 and the second rear connection terminal group 954 are located at the other end of the sampling device 950 in direction d2; the first front connection terminal group 951 and the first rear connection terminal group 953 are arranged sequentially along direction d1, and the second front connection terminal group 952 and the second rear connection terminal group 954 are arranged sequentially along direction d1; the first terminal group 951 and the second front connection terminal group 952 are arranged side by side with intervals along direction d3, and the first rear connection terminal group 953 and the second rear connection terminal group 954 are arranged side by side with intervals along direction d3. Furthermore, the number of the first front connection terminals is ≥2, and the first front connection terminals are arranged side by side with intervals along direction d1; the number of the first rear connection terminals is ≥2, and the first rear connection terminals are arranged side by side with intervals along direction d1; the number of the second front connection terminals is ≥2, and the second front connection terminals are arranged side by side with intervals along direction d1; the number of the second rear connection terminals is ≥2, and the second rear connection terminals are arranged side by side with intervals along direction d1; the first front connection terminals, the first rear connection terminals, the second front connection terminals, and the second rear connection terminals are all plugged into and electrically connected to the corresponding external wiring terminals (i.e., the inlet wiring terminal of the outgoing switch 930, the first connection terminal 41 on the outgoing side, the outgoing wiring terminal of the outgoing switch 930, and the second connection terminal 42 on the outgoing side) along direction d2 respectively.

[0285] Specifically, both the first and second front connection terminals are male connectors. That is, when the sampling device 950 is connected to the electrical circuit, the first and second front connection terminals are used as male connectors when they are plugged into the corresponding wiring terminals (i.e., the inlet and outlet wiring terminals of the outlet switch 930) outside the sampling device 950. One end of the first and second front connection terminals passes through the sampling device housing 958 and protrudes outside the sampling device housing 958. Both the first and second rear connection terminals are female connectors. That is, when the sampling device 950 is connected to the electrical circuit, the first and second rear connection terminals are used as female connectors when they are plugged into the corresponding wiring terminals (i.e., the inlet side connection terminal 41 and the outlet side connection terminal 42) outside the sampling device 950. The sampling device housing 958 is provided with sockets that mate with the first and second rear connection terminals respectively. It should be noted that, depending on actual needs, the first and second front connecting terminals can be replaced with female plug-in connecting terminals, and the first and second rear connecting terminals can be replaced with male plug-in connecting terminals.

[0286] like Figure 8 and 10 As shown, the plane where the sampling circuit board 955 is located is perpendicular to direction d2; in direction d3, the first front connection terminal group 951 and the first rear connection terminal group 953 are located on one side of the sampling circuit board 955, and the second front connection terminal group 952 and the second rear connection terminal group 954 are located on the other side of the sampling circuit board 955.

[0287] like Figure 8 and 10 As shown, each of the current sampling elements 956 is coupled to the wiring structure of the sampling device. Furthermore, the current sampling element 956 is disposed within the sampling device housing 958.

[0288] like Figure 8 and 10 As shown, each of the voltage transformers is coupled to the wiring structure of the sampling device. Furthermore, the voltage transformers are housed within the sampling device 950.

[0289] like Figure 8 and 10 As shown, the residual current transformer 957 is coupled to the sampling device wiring structure. Furthermore, the residual current transformer 957 is housed within the sampling device housing 958.

[0290] In other embodiments, the residual current transformer 957 is coupled to the second connection terminal 42 on each outgoing line side, or the residual current transformer 957 is coupled to the first connection terminal 41 on each outgoing line side. Furthermore, the residual current transformer 957 is disposed within the base 10.

[0291] like Figure 8 and 10 As shown, the first front connection terminal and the corresponding first rear connection terminal are connected in series through a first connecting conductor; the second front connection terminal and the corresponding second rear connection terminal are connected in series through a second connecting conductor.

[0292] Furthermore, when the sampling element includes a current sampling element 956, the current sampling element 956 is a Rogowski coil current transformer, and each current sampling element 956 is sleeved on the corresponding first connecting conductor.

[0293] Furthermore, when the sampling element includes a residual current transformer 957, each of the second connecting conductors passes through the middle of the residual current transformer 957.

[0294] It should be noted that the positions of the current sampling element 956 and the residual current transformer 957 are not limited to the above-described manner. The arrangement of the two can also be changed as follows: the current sampling element 956 is sleeved on the corresponding second connecting conductor, and each first connecting conductor passes through the residual current transformer 957; or, the current sampling element 956 is sleeved on the corresponding first connecting conductor (or second connecting conductor), and each first connecting conductor (or second connecting conductor) passes through the middle of the residual current transformer 957.

[0295] Specifically, the first connecting conductor is composed of a first conductor front section and a first conductor rear section connected together, with one end of the first conductor front section connected to a corresponding first front terminal and the other end connected to one end of the first conductor rear section, and the other end of the first conductor rear section connected to a corresponding first rear terminal; the first conductor front section includes a front section first plate and a front section second plate bent and connected together, with one end of the front section first plate bent and connected to one end of the corresponding first front connecting terminal, and the other end of the front section first plate bent and connected to one end of the front section second plate; the first conductor rear section includes a rear section first plate and a rear section second plate bent and connected together in sequence. The second plate and the rear third plate are connected in the following ways: one end of the rear first plate is connected to the other end of the front second plate; the other end of the rear first plate is bent and connected to one end of the rear second plate; the other end of the rear second plate is bent and connected to one end of the rear third plate; and the other end of the rear third plate is connected to the corresponding second rear connecting terminal. The front second plate is used for mounting the current sampling element 956. The front second plate and the rear third plate are opposite each other along direction d3, limiting the current sampling element 956 axially. The front first plate and the rear second plate are opposite each other along direction d2, limiting the current sampling element 956 radially. The specific structure of the first connecting conductor facilitates the installation of the current sampling element 956 and achieves reliable positioning of the current sampling element 956. Furthermore, the front section of the first conductor and the corresponding first front connecting terminal are an integral structure, for example, the front section of the first conductor and the first front connecting terminal are cut and bent from a metal plate.

[0296] Specifically, the second connecting conductor and the corresponding second front connecting terminal are an integral structure, for example, the second connecting conductor and the second front connecting terminal are cut and bent from a metal plate.

[0297] In another embodiment of the first connecting conductor, the first connecting conductor is a flexible wire or a rigid wire. Furthermore, the first connecting conductor has its own insulating sheath.

[0298] In another embodiment of the second connecting conductor, the second connecting conductor is a flexible wire or a rigid wire. Furthermore, the second connecting conductor has its own insulating sheath.

[0299] like Figure 8 As shown, in the second embodiment of the plug-in base, the sampling circuit board 955 is electrically connected to the sampling device wiring structure, and the sampling circuit board 955 is also used to output power externally. Furthermore, the sampling device 950 also includes a power output terminal, which is electrically connected to the sampling device wiring structure via the sampling circuit board 955. Furthermore, the sampling device housing 958 is provided with a power output hole, and a power output terminal is disposed within the power output hole; preferably, the power output terminal is a plug-in type connection terminal.

[0300] Specifically, the control circuit board 942 of the control module 940 is electrically connected to the sampling circuit board 955 to obtain the operating power and / or the sampling signal obtained by the sampling device. When the control module 940 obtains the operating power through the sampling circuit board 955, the plug-in base of the second embodiment does not have a control module connection terminal group 50.

[0301] In another embodiment, when the plug base of the second embodiment includes a current sampling element 956, the current sampling element 956 is a manganese copper shunt connected in series with the first connecting conductor or the second connecting conductor.

[0302] In practical use, the second embodiment of the plug-in base preferably assembles the sampling device 950 and the corresponding output switch 930 together, and then inserts the whole into the corresponding output switch position 13. The first rear connection terminal is plugged into the corresponding output side first connection terminal 41 for electrical connection, and the second rear connection terminal is plugged into the corresponding output side second connection terminal 42 for electrical connection.

[0303] The following is a third embodiment of the plug-in base of the present invention, which differs from the plug-in base of the first embodiment in that the base unit of the plug-in base in the third embodiment does not have a sampling device 950. Furthermore, the sampling device 950 is integrated with the outgoing switch 930.

[0304] The following is a fourth embodiment of the plug-in base of the present invention, which differs from the plug-in base of the first embodiment in that: Figure 37As shown: The base 10 does not have an inlet switch position 12, an inlet switch first connection terminal, an inlet position 15, an inlet connection terminal group, or an inlet cover plate group 106; The base 10 includes an inlet switch avoidance notch 9211 for avoiding the inlet switch 920 and corresponding to the outlet switch position 13; The inlet switch second connection terminal is located within the corresponding inlet switch avoidance notch 9211.

[0305] Furthermore, the corresponding outgoing switch positions 13 and incoming switch clearance gaps 9211 are arranged side by side along direction d1, and the corresponding outgoing switch positions 13 and incoming switch clearance gaps 9211 are arranged side by side with the corresponding meter positions 11 along direction d3.

[0306] The second connecting terminal of the incoming line switch is plugged into and electrically connected to the outgoing terminal of the incoming line switch 920 along direction d2 or direction d3. In the plug-in base of the fourth embodiment, the second connecting terminal of the incoming line switch is preferably plugged into and electrically connected to the outgoing terminal of the incoming line switch 920 along direction d3.

[0307] The following is a fifth embodiment of the plug-in base of the present invention, which differs from the plug-in base of the second embodiment in that: Figure 37 As shown: The base 10 does not have an inlet switch position 12, an inlet switch first connection terminal, an inlet position 15, an inlet connection terminal group, or an inlet cover plate group 106; The base 10 includes an inlet switch avoidance notch 9211 for avoiding the inlet switch 920 and corresponding to the outlet switch position 13; The inlet switch second connection terminal is located within the corresponding inlet switch avoidance notch 9211.

[0308] Furthermore, the corresponding outgoing switch positions 13 and incoming switch clearance gaps 9211 are arranged side by side along direction d1, and the corresponding outgoing switch positions 13 and incoming switch clearance gaps 9211 are arranged side by side with the corresponding meter positions 11 along direction d3.

[0309] The second connecting terminal of the incoming line switch is plugged into and electrically connected to the outgoing terminal of the incoming line switch 920 along direction d2 or direction d3. In the plug-in base of the fifth embodiment, the second connecting terminal of the incoming line switch is preferably plugged into and electrically connected to the outgoing terminal of the incoming line switch 920 along direction d3.

[0310] like Figure 38As shown, this is the sixth embodiment of the plug-in base of the present invention. The difference between the plug-in base of the fourth or fifth embodiment is that: in the plug-in base of the sixth embodiment, the base unit does not have the meter inlet connection terminal 21 and the second copper busbar 120. The inlet switch 920 is located in the inlet switch clearance notch 9211. The outlet terminal of the inlet switch 920 and the inlet terminal of the energy meter 910 are directly connected one-to-one by a conductor. The external conductor of the inlet is directly electrically connected to the inlet terminal of the inlet switch 920.

[0311] like Figures 35-36 The image shows the seventh embodiment of the plug-in base of the present invention.

[0312] In the seventh embodiment of the plug-in base, the number of base units n in the base unit group is greater than or equal to 2. Each base unit has the same structure and is arranged side by side at intervals along the direction d1. Each base unit has the same structure as the base unit in the first embodiment, the second embodiment or the third embodiment. The base body 101 of the base 10 of each base unit is an integral structure.

[0313] The following is the eighth embodiment of the plug-in base of the present invention.

[0314] In the plug-in base of the eighth embodiment, the number of base units n in the base unit group is greater than or equal to 2. Each base unit has the same structure and is arranged side by side at intervals along the direction d1. Each base unit has the same structure as the base unit in the fourth embodiment, the fifth embodiment or the sixth embodiment. The base body 101 of the base 10 of each base unit is an integral structure.

[0315] like Figure 26-27 As shown in Figures 29-34, this is the ninth embodiment of the plug-in base of the present invention.

[0316] like Figure 26-27 As shown in Figures 29-34, the difference between the plug-in base of the ninth embodiment and the plug-in base of the seventh embodiment is that in the plug-in base of the ninth embodiment, the number of base units n in the base unit group is ≥ 2.

[0317] The base unit group includes an inlet position 15 disposed on the base 10 of one base unit, rather than having an inlet position 15 disposed on the base 10 of each base unit. The base 10 where the inlet position 15 is located is the first base, that is, the base 10 with the inlet position 15 is the first base, and the base unit corresponding to the first base is the first base unit. The inlet connection terminal group disposed in the inlet position 15 is the main inlet connection terminal group. The inlet switch connection terminal group of each base unit is electrically connected to the inlet connection terminal group in the inlet position 15. That is, the inlet switch connection terminal groups of each base unit are electrically connected to the main inlet connection terminal group in parallel with each other, and each connection terminal of each inlet switch connection terminal group is electrically connected to each connection terminal of the main inlet connection terminal group.

[0318] In the ninth embodiment of the plug-in base, each base unit in the same base unit group shares the inlet position 15 and the inlet connection terminal group, which helps to simplify the structure and reduce the number of parts, further simplifying the wiring operation.

[0319] like Figure 26 , 29 As shown in 30, 32-33, and 35, in the first base, the inlet position 15 is arranged side by side with the inlet switch position 12 in the direction d3 and sequentially with the outlet switch position 13 in the direction d1. The inlet position 15 and the meter position 11 are located on both sides of the inlet switch position 12 in the direction d3.

[0320] like Figure 26-27 As shown in Figures 29-30, 32, and 34, the base unit group also includes a fifth copper busbar 150. The number of fifth copper busbars 150 is the same as the number of phases of the electrical circuit and the number of external connection input terminals 70. Each fifth copper busbar 150 includes a fifth copper busbar plug-in section 1501, a fifth copper busbar intermediate section 1502, and a fifth copper busbar mating section 1503. One end of the fifth copper busbar plug-in section 1501 and the fifth copper busbar mating section 1503 are connected to the fifth copper busbar intermediate section 1502. The fifth copper busbar plug-in section 1501 serves as the first connection terminal of the input switch, and the number of fifth copper busbar plug-in sections 1501 in each fifth copper busbar 150 is the same as the number of input switch connection terminal groups (i.e., the same as the number of base units). The fifth copper busbar mating section 1503 is electrically connected to the corresponding external connection input terminal 70, and the number of both is the same. Furthermore, the first base also includes an inlet cover plate group 106 stacked with the corresponding base body 101 along direction d2; the projection direction of the base unit group is the orthogonal projection of direction d2, and the inlet cover plate group 106 blocks the corresponding fifth copper bus mating end 1503 and the corresponding inlet connection terminal group; the base unit group also includes an intermediate cable management plate group 108 stacked with each base body 101 along direction d2 and fixedly mated with the base body 101; the projection direction of the base unit group is the orthogonal projection of direction d2, and the middle section of the fifth copper bus is blocked by the intermediate cable management plate group 108.

[0321] The base unit group is provided with fifth copper busbar holes (not shown in the figure) that correspond one-to-one with the fifth copper busbars 150. The middle section 1502 of the fifth copper busbar 150 is set in the corresponding fifth copper busbar hole, which not only realizes the reliable positioning of each fifth copper busbar, but also ensures the insulation performance between each fifth copper busbar. Furthermore, the fifth copper busbar hole is formed by each base 10 and the intermediate cable management plate group 108.

[0322] Specifically, such as Figure 29 , 30As shown in Figures 32 and 34, the electrical circuit is a two-phase electrical circuit; in the base unit, the incoming switch position 12 is positioned in direction d3 relative to the outgoing switch position 13 and close to the meter position 11; the middle section 1502 of the fifth copper busbar passes through the outgoing switch position 13 between adjacent incoming switches 12, and also passes between the first connecting terminal 41 and the second connecting terminal 42 on the outgoing side between adjacent incoming switches 12; the projection direction of the plug-in base is the orthogonal projection of direction d2 and the projection direction of the base unit group is the orthogonal projection of direction d2, the middle section 1502 of the fifth copper busbar is blocked by the middle cable management plate group 108, and the external incoming terminal 70 is blocked by the corresponding incoming cover plate group 106; in the base unit group, the base body 101, the middle cable management plate group 108 and the first cable management cover plate 102 cooperate to form an incoming switch cavity for the incoming switch 920 to be inserted in direction d2. Furthermore, the number of base units n=2, one being a first base unit and the other a second base unit; the inlet switch position 12, the outlet switch position 13, the inlet switch position 14, and the outlet switch position 15 of the first base unit are sequentially arranged along direction d1; the inlet position 15 is positioned in direction d3 closer to the meter position 11 than the outlet position 16; the projection direction of each base unit is an orthogonal projection of direction d1, with the inlet switch first connection terminal, the outlet switch first connection terminal, the inlet switch second connection terminal, and the outlet switch second connection terminal 14 aligned along direction d1. The wires are arranged side by side at intervals along direction d3 and are gradually moved away from the meter position 11 along direction d3; the intermediate wire management plate group 108 includes a second wire management cover plate 104 stacked with each base body 101 along direction d2; the projection direction of the insertion base is the orthogonal projection of direction d2 and the projection direction of the base unit group is the orthogonal projection of direction d2, and the middle section 1502 of the fifth copper busbar is blocked by the second wire management cover plate 104; in the base unit group, the second wire management cover plate 104, the first wire management cover plate 102 and the base body 101 cooperate to form an incoming switch cavity in which each incoming switch 920 is inserted along direction d2. Furthermore, the intermediate cable management plate assembly 108 also includes a third cable management cover plate 105; each of the fifth copper busbar intermediate sections 1502 is located between the first connection terminal and the second connection terminal of the outgoing switch of the first base unit in direction d3 and is arranged side by side in sequence along direction d3; the third cable management cover plate 105 is located between the second cable management cover plate 104 and the corresponding first base in direction d2; in direction d3, the fifth copper busbar intermediate section 1502 closest to the first connection terminal of the outgoing switch of the first base unit is the uppermost intermediate section; the third cable management cover plate 105 covers the uppermost intermediate section, separating the uppermost intermediate section from the first connection terminal of the outgoing switch of the first base unit. Furthermore, the fifth copper busbar 150 is an integral structure.

[0323] Specifically, such as Figure 26-27As shown, the electrical circuit is a four-phase circuit; in the base unit, the incoming switch position 12 and the outgoing switch position 13 are arranged side by side; in the direction d3, the middle section 1502 of the fifth copper busbar passes through one side of the outgoing switch position 13 between two adjacent incoming switch positions 12, and the other side of the outgoing switch position 13 between two adjacent incoming switch positions 12 is provided with a meter position 11; on the orthogonal projection of the projection direction of the plug-in base, the middle section 1502 of the fifth copper busbar is blocked by the middle cable management plate group 108. Further, the outgoing positions 16 of each base unit are arranged side by side along the direction d3; the outgoing switch position 13 located between two adjacent incoming switch positions 12 is the adjacent outgoing switch position, and the outgoing position 16 corresponding to the adjacent outgoing switch position and the middle section 1502 of the fifth copper busbar are respectively located on both sides of the middle cable management plate group 108 in the direction d2; the incoming position 15 is set away from the meter position 11 relative to the outgoing position 16 in the direction d3. Furthermore, the number of base units n=2, one being a first base unit and the other a second base unit; the outgoing switch position 13 of the first base unit, the incoming switch position 12 of the first base unit, the outgoing switch position 13 of the second base unit, and the incoming switch position of the second base unit are arranged side by side along direction d1; the outgoing position 16 of the first base unit and the outgoing position 16 of the second base unit are arranged side by side along direction d1; the incoming position 15 is located between the outgoing positions 16 of the first base unit and the outgoing positions 16 of the second base unit in direction d1; and the incoming position 15 is located away from the meter position 11 relative to the outgoing position 16 in direction d3; the fifth copper busbar intermediate section 1502 includes an intermediate section first part, an intermediate section second part, and an intermediate section third part. The third section has three intermediate sections: the first section extends along direction d1, the second section extends along direction d1, and the third section extends along direction d3. One end of the first section is connected to the first connection terminal 31 on the incoming line side of the corresponding second base unit, and the other end is connected to one end of the second section. The other end of the second section is connected to the middle of the third section. One end of the third section is connected to the first connection terminal 31 on the corresponding first base unit, and the other end is electrically connected to the corresponding external connection terminal 70. The projection direction of the base unit group is the orthogonal projection of direction d1. Each first section is arranged side by side and spaced along direction d1, each second section is arranged side by side and spaced along direction d1, and each third section is arranged side by side and spaced along direction d1. Furthermore, in the fifth copper busbar intermediate section 1502, the first part of the intermediate section is perpendicularly connected to the second part of the intermediate section, and the second part of the intermediate section is perpendicularly connected to the third part of the intermediate section; each of the intermediate sections is arranged side by side with the fourth copper busbar 140 of the second base unit along direction d2; each of the fifth copper busbar intermediate sections 1502 is located on the same side of the incoming switch position 12 and the outgoing switch position of each base unit in direction d3.

[0324] It should be noted that in the description of this invention, the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship conventionally placed during use. They are used only for ease of description and do not indicate that the device or element referred to must have a specific orientation, and therefore should not be construed as a limitation of this invention. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating relative importance.

[0325] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A plug-in base, comprising a base unit, the number of base units being ≥1, the base unit comprising a base (10) and a terminal group fixedly disposed relative to the base (10), the base (10) comprising a mounting position group disposed thereon, the mounting position group comprising a meter position (11) for mounting an energy meter (910) and an outgoing switch position (13) for mounting an outgoing switch (930) disposed in a one-to-one correspondence, the meter position (11) and the outgoing switch position (13) being arranged side by side along direction d3; Its features are: The terminal group also includes a meter connection terminal group (20) and an outgoing switch connection terminal group, which are arranged one-to-one and connected in series in the same electrical circuit. The meter connection terminal group (20) is located at the meter position (11) and includes a meter outgoing connection terminal (22). The meter outgoing connection terminal (22) is used to connect one-to-one with the outgoing wiring terminal of the energy meter (910). The outgoing switch connection terminal group is located at the outgoing switch position (13). Each connection terminal of the outgoing switch connection terminal group is used to connect to each wiring terminal of the outgoing switch (930). The outgoing switch connection terminal group is also used to connect to the outgoing external conductor.

2. The plug-in base according to claim 1, characterized in that: The outgoing switch connection terminal group includes an outgoing switch first connection terminal and an outgoing switch second connection terminal. The outgoing switch first connection terminal is used to make a one-to-one plug-in electrical connection with the incoming terminal of the outgoing switch (930). The outgoing switch second connection terminal is used to make a one-to-one plug-in electrical connection with the outgoing terminal of the outgoing switch (930). The outgoing switch first connection terminal is also electrically connected to the meter outgoing connection terminal (22). The outgoing switch second connection terminal is also used to make an electrical connection with the outgoing external conductor. The terminal group further includes a line-out side connection terminal group (40) fixedly disposed on the base (10); the line-out side connection terminal group (40) serves as a line-out switch connection terminal group, and includes a line-out side first connection terminal (41) serving as a first connection terminal of the line-out switch and a line-out side second connection terminal (42) serving as a second connection terminal of the line-out switch; or, The terminal group also includes a line-out side connection terminal group (40) fixedly mounted on the base (10). The line-out side connection terminal group (40) includes a line-out side first connection terminal (41) and a line-out side second connection terminal (42) that are arranged one-to-one. The base unit also includes a sampling device (950) disposed in the line-out switch position (13). The sampling device (950) includes a sampling device housing (958), a sampling circuit board (955) disposed in the sampling device housing (958), a sampling element, and a sampling device wiring structure. The sampling device wiring structure includes a first front connection terminal group (951) and a first rear connection terminal group (953) connected in series, and a second front connection terminal group (954) connected in series. 52) and the second rear connection terminal group (954), the first front connection terminal group (951) and the second front connection terminal group (952) serve as the outgoing switch connection terminal group, each connection terminal of the first front connection terminal group (951) is used to be plugged into and electrically connected to each incoming terminal of the outgoing switch (930) one-to-one, each connection terminal of the second front connection terminal group (952) is used to be plugged into and electrically connected to each outgoing terminal of the outgoing switch (930) one-to-one, each connection terminal of the first rear connection terminal group (953) is plugged into and electrically connected to each outgoing side first connection terminal (41) one-to-one, and each connection terminal of the second rear connection terminal group (954) is plugged into and electrically connected to each outgoing side second connection terminal (42) one-to-one; The sampling element includes at least one of a current sampling element (956), a residual current transformer (957), a temperature sensor, and a voltage sensor; each of the current sampling elements (956) is used to collect the current of each phase of the electrical circuit; each of the voltage sensors is used to collect the voltage of each phase of the electrical circuit; the residual current transformer (957) is used to determine whether there is residual current in the electrical circuit; the temperature sensor is used to collect the temperature of the environment where the plug-in base is located and / or the temperature of at least some of the connected terminals of the terminal group.

3. The plug-in base according to claim 2, characterized in that: The meter output connection terminals (22) are arranged side by side with intervals along direction d1, the first connection terminals (41) on each output side are arranged side by side with intervals along direction d1, and the second connection terminals (42) on each output side are arranged side by side with intervals along direction d1. The first connection terminals (41) and the second connection terminals (42) on the output side are located on one side of the meter connection terminal group (20) in direction d3; the direction d1 and the direction d3 are perpendicular to each other. The base unit also includes a third copper busbar (130) disposed in the base (10). The third copper busbar (130), the meter output connection terminal (22), and the output side first connection terminal (41) are disposed in a corresponding manner. One end of the third copper busbar (130) is connected to and electrically connected to the corresponding meter output connection terminal (22), and the other end of the third copper busbar (130) serves as the output side first connection terminal (41). The third copper busbar (130) includes a first section (1301), a middle section (1302), and a tail section (1303) connected in sequence. The first section (1301) is connected to and electrically connected to the corresponding meter output terminal (22). The tail section (1303) serves as the first connection terminal (41) on the corresponding output side.

4. The plug-in base according to claim 3, characterized in that: The meter connection terminal group (20) also includes a meter inlet connection terminal (21); the meter inlet connection terminal (21) is used to make a one-to-one plug-in electrical connection with the inlet wiring terminal of the energy meter (910), and the meter inlet connection terminal (21) is also used to make an electrical connection with the inlet external conductor through the inlet switch (920); The terminal group also includes an incoming switch connection terminal group. The incoming switch connection terminal group, the meter connection terminal group (20) and the outgoing switch connection terminal group are connected in series in the same electrical circuit. The incoming switch connection terminal group includes an incoming switch second connection terminal. The incoming switch second connection terminal is used to make a one-to-one plug-in electrical connection with the outgoing terminal of the incoming switch (920). The terminal group also includes an input side connection terminal group (30) fixedly disposed on the base (10) and serving as an input switch connection terminal group; the input side connection terminal group (30) includes an input side second connection terminal (32) serving as a second connection terminal of the input switch.

5. The plug-in base according to claim 4, characterized in that: In the base unit, the meter inlet connection terminals (21) are arranged side by side with intervals along direction d1, the meter inlet connection terminals (21) and the meter outlet connection terminals (22) are arranged alternately along direction d1, the inlet side second connection terminals (32) are arranged side by side with intervals along direction d1, the inlet side second connection terminals (32) and the outlet side first connection terminals (41) are located on one side of the meter connection terminal group (20) in direction d3, and all inlet side second connection terminals (32) and outlet side connection terminal group (40) are arranged in sequence along direction d1; The base unit also includes a second copper busbar (120) disposed in the base (10). The second copper busbar (120), the meter inlet connection terminal (21) and the inlet side second connection terminal (32) are disposed in a corresponding manner. One end of each second copper busbar (120) is connected to and electrically connected to the corresponding meter inlet connection terminal (21), and the other end of each second copper busbar (120) serves as the inlet side second connection terminal (32). The second copper busbar (120) includes a second copper busbar head section (1201), a second copper busbar middle section (1202), and a second copper busbar tail section (1203) connected in sequence. The second copper busbar head section (1201) is connected and electrically connected to the corresponding meter inlet connection terminal (21). The second copper busbar tail section (1203) serves as the corresponding inlet side second connection terminal (32). The projection direction of the base unit is the orthogonal projection of direction d1. The second copper busbar middle section (1202) and the third copper busbar middle section (1302) of the third copper busbar (130) are arranged side by side at intervals along direction d2. The directions d1, d2, and d3 are perpendicular to each other.

6. The plug-in base according to claim 3, characterized in that: The base (10) includes a base body (101) and a first cable management cover (102). The first cable management cover (102) and the base body (101) are stacked and fixedly connected along direction d2. The projection direction of the base unit is the orthogonal projection of direction d2. The part of the third copper busbar (130) except for the first connection terminal (41) on the outgoing side is blocked by the first cable management cover (102). The directions d1, d2 and d3 are perpendicular to each other.

7. The plug-in base according to claim 5, characterized in that: The base (10) includes a base body (101), a first cable management cover plate (102), and an insulating partition plate (103). The first cable management cover plate (102) is stacked and fixedly connected to the base body (101) along direction d2. In direction d2, the insulating partition plate (103) is located between the base body (101) and the first cable management cover plate (102) and between the middle section of the second copper busbar (1202) and the middle section of the third copper busbar (1302). The projection direction of the base unit is orthogonal to direction d2. In the image, the portion of the third copper busbar (130) excluding the first connecting terminal (41) on the outgoing side and the portion of the second copper busbar (120) excluding the second connecting terminal (32) on the incoming side are covered by the first cable management cover plate (102). Part of the middle section of the second copper busbar (1202) and part of the middle section of the third copper busbar (1302) are intersected. The insulating partition plate (103) separates at least the intersecting portion of the middle section of the second copper busbar (1202) and the middle section of the third copper busbar (1302). The directions d1, d2 and d3 are perpendicular to each other. The projection direction of the base unit is an orthogonal projection of direction d1. The middle sections of the second copper busbar (1202) and the third copper busbar (1302) are arranged side by side with intervals along direction d2. The first sections of each second copper busbar (1201) overlap, the first sections of each third copper busbar (1301) overlap, and the first sections of the second copper busbar (1201) and the first sections of the third copper busbar (1301) overlap at least partially. The second connecting terminals (32) on each incoming line side overlap, the first connecting terminals (41) on each outgoing line side overlap, and the second connecting terminals (42) on each outgoing line side overlap. The first connecting terminal (41) on the outgoing line side overlaps with the second connecting terminal (42) on the outgoing line side. Two connecting terminals (42) are arranged side by side with intervals along direction d3, and the connecting terminals of the meter connecting terminal group (20) overlap; the second connecting terminal (32) on the inlet side overlaps with the first connecting terminal (41) on the outlet side, or the second connecting terminal (32) on the inlet side, the first connecting terminal (41) on the outlet side and the second connecting terminal (42) on the outlet side are arranged side by side with intervals along direction d3; in the base unit and on direction d3, the outlet switch position (13) is located on one side of the first cable management cover plate (102), and the meter position (11) is located on the other side of the first cable management cover plate (102).

8. The plug-in base according to claim 2, characterized in that: The mounting position group also includes a cable outlet position (16), and the cable outlet switch position (13) and the cable outlet position (16) are arranged one-to-one; in the base unit, the cable outlet position (16) and the cable outlet switch position (13) are arranged side by side along direction d3 and the cable outlet position (16) and the meter position (11) are respectively located on both sides of the cable outlet switch position (13) in direction d3; the terminal group also includes a cable outlet connection terminal group arranged in the cable outlet position (16), the cable outlet connection terminal group includes an external cable outlet terminal (80) that corresponds one-to-one with the second connection terminal (42) on the cable outlet side and is electrically connected, and each external cable outlet terminal (80) is arranged side by side at intervals along direction d1; The base unit also includes a fourth copper busbar (140), one end of each fourth copper busbar (140) serves as a second connection terminal (42) on the outgoing side and the other end is used to cooperate with the corresponding external outgoing terminal (80); The base (10) further includes a base body (101) and a cable outlet cover assembly (107) stacked and fixedly connected to the base body (101) along direction d2. The cable outlet cover assembly (107) is arranged in a one-to-one correspondence with the cable outlet position (16). The fourth copper busbar (140) includes a fourth copper busbar head section (1401) and a fourth copper busbar tail section (1402) connected in sequence. The fourth copper busbar head section (1401) serves as the second connection terminal (42) on the cable outlet side, and the fourth copper busbar tail section (1402) is connected to the corresponding cable outlet position (16). The external outgoing terminal (80) is electrically connected; the projection direction of the base unit is the orthogonal projection of direction d2, and the fourth copper bus tail section (1402) and the outgoing connection terminal group are blocked by the outgoing cover plate group (107); in the base unit, the outgoing cover plate group (107), the first cable management cover plate (102) of the base (10) and the base body (101) cooperate to form an outgoing switch cavity for the outgoing switch (930) to be inserted in the direction d2; the directions d1, d2 and d3 are perpendicular to each other.

9. The plug-in base according to claim 4, characterized in that: The mounting position group also includes an incoming switch position (12), a meter position (11), an incoming switch position (12), and an outgoing switch position (13) arranged one-to-one. An incoming switch connection terminal group is arranged inside the incoming switch position (12). The incoming switch connection terminal group also includes an incoming switch first connection terminal for plugging and electrically connecting with the incoming wiring terminal of the incoming switch (920). In the base unit, the incoming switch position (12) and the outgoing switch position (13) are arranged sequentially along direction d1, and the incoming switch position (12) and the outgoing switch position (13) are arranged side by side with the meter position (11) along direction d3. The base (10) also includes an inlet position (15), which is configured one-to-one with the inlet switch position (12); the plug-in base also includes an inlet connection terminal group disposed in the inlet position (15), the inlet connection terminal group includes an external inlet terminal (70) configured one-to-one with the first connection terminal of the inlet switch and electrically connected, each external inlet terminal (70) is arranged side by side at intervals along direction d1, and the external inlet terminal (70) is also used to connect and electrically connect with the external conductor of the inlet; In the base unit, the inlet position (15) and the inlet switch position (12) are arranged side by side along direction d3, and the inlet position (15) and the meter position (11) are respectively located on both sides of the outlet switch position (12) in direction d3; the base unit also includes a first copper busbar (110) that corresponds one-to-one with the first connection terminal of the inlet switch, one end of each first copper busbar (110) serves as the first connection terminal (31) on the inlet side, and the other end is used to cooperate with the corresponding external inlet terminal (70); The base (10) further includes a base body (101) and an inlet cover plate assembly (106) stacked with the base body (101) along direction d2. The inlet cover plate assembly (106), the inlet position (15), and the inlet switch position (12) are arranged in a one-to-one correspondence. The first copper busbar (110) includes a first copper busbar head section (1101) and a first copper busbar tail section (1102) connected in sequence. The first copper busbar head section (1101) serves as the first connection terminal (31) on the inlet side, and the first copper busbar tail section (1102) serves as the first connection terminal (31) on the inlet side. It is electrically connected to the corresponding external connection terminal (70); the projection direction of the base unit is the orthogonal projection of direction d2, and the inlet cover plate group (106) blocks the tail section of the first copper busbar (1102) and the outlet connection terminal group; in the base unit, the inlet cover plate group (106), the base body (101) and the first cable management cover plate (102) of the base (10) form an inlet switch cavity for the inlet switch (920) to be inserted in the direction d2; the directions d1, d2 and d3 are perpendicular to each other; Alternatively, the plug-in base includes a base unit group, which includes n base units arranged side by side along direction d1, where n≥2; the base unit group also includes an inlet position (15) disposed on the base (10) of one base unit; the base unit group also includes an inlet connection terminal group disposed in the inlet position (15), the inlet terminal group including an external inlet connection terminal (70) for connecting and electrically connecting with an external conductor of the inlet, each external connection terminal (70) being arranged side by side at intervals along direction d1; the inlet switch connection terminal group of each base unit is electrically connected to the inlet connection terminal group of the inlet position (15); The base unit group also includes a fifth copper busbar (150). Each fifth copper busbar (150) includes a fifth copper busbar plug section (1501), a fifth copper busbar middle section (1502), and a fifth copper busbar mating section (1503). One end of the fifth copper busbar plug section (1501) and the fifth copper busbar mating section (1503) are connected to the fifth copper busbar middle section (1502). The fifth copper busbar plug section (1501) serves as the first connection terminal of the incoming line switch, and the number of fifth copper busbar plug sections (1501) of each fifth copper busbar (150) is the same as the number of the incoming line switch connection terminal group. The fifth copper busbar mating section (1503) is electrically connected to the corresponding external incoming line terminal (70). The base (10) where the incoming line position (15) is located is the first base, and the base unit corresponding to the first base is the first base unit; in the first base, the incoming line position (15) is arranged side by side with the incoming line switch position (12) in direction d3 and sequentially arranged with the outgoing line switch position (13) in direction d1, and the incoming line position (15) and the meter position (11) are respectively located on both sides of the incoming line switch position (12) in direction d3; the middle section (1502) of the fifth copper busbar extends in direction d1; the projection direction of the first base unit is the orthogonal projection of direction d1, and the first connecting terminal of the incoming line switch, the first connecting terminal of the outgoing line switch, the second connecting terminal of the incoming line switch, and the second connecting terminal of the outgoing line switch are arranged side by side and spaced apart in direction d3 and sequentially away from the meter position (11) in direction d3; the first base also includes a corresponding The base unit group includes an inlet cover plate group (106) stacked along direction d2 of the base body (101); the base unit group also includes an intermediate cable management plate group (108) stacked along direction d2 with each base body (101), the intermediate cable management cover group (108) includes a second cable management cover plate (104); the projection direction of the base unit group is the orthogonal projection of direction d2, the inlet cover plate group (106) blocks the corresponding fifth copper bus mating section (1503) and the inlet connection terminal group, the second cable management cover plate (104) blocks the middle section (1502) of the fifth copper bus; in the base unit group, the second cable management cover plate (104), the first cable management cover plate (102) of the base (10) and the base body (101) cooperate to form an inlet switch cavity for each inlet switch (920) to be inserted along direction d2; Each connection terminal of the meter connection terminal group (20) is used to be plugged into and electrically connected to each terminal of the energy meter (910) along direction d3 or direction d2; each connection terminal of the incoming switch connection terminal group is used to be plugged into and electrically connected to each terminal of the incoming switch (920) along direction d2; each connection terminal of the outgoing switch connection terminal group is used to be plugged into and electrically connected to each terminal of the outgoing switch (930) along direction d2.

10. The plug-in base according to claim 4, characterized in that: The base (10) also includes an incoming switch avoidance notch (9211) for avoiding the incoming switch (920) and corresponding to the outgoing switch position (13) one by one; in the base unit, the outgoing switch position (13) and the incoming switch avoidance notch (9211) are arranged side by side along direction d1, and the outgoing switch position (13) and the incoming switch avoidance notch (9211) are arranged side by side with the meter position (11) along direction d3; the second connection terminal of the incoming switch is located in the corresponding incoming switch avoidance notch (9211); The base (10) also includes an incoming switch avoidance notch (9211) for avoiding the incoming switch (920). Each connection terminal of the meter connection terminal group (20) is used to be plugged into and electrically connected to each wiring terminal of the energy meter (910) along direction d3 or direction d2; the second connection terminal of the incoming switch is used to be plugged into and electrically connected to the incoming wiring terminal of the incoming switch (920) along direction d3 or direction d2; each connection terminal of the outgoing switch connection terminal group is used to be plugged into and electrically connected to each wiring terminal of the outgoing switch (930) along direction d2. The base (10) further includes at least one expansion module position (14) for accommodating an expansion module; the base unit further includes an expansion module connection terminal group (60) fixedly disposed on the base (10) and located within the expansion module position (14) for plugging and electrically connecting with the wiring terminals of the expansion module. The meter connection terminal group (20) also includes a meter inlet connection terminal (21); the meter inlet connection terminal (21) is used to connect one-to-one with the inlet wiring terminal of the energy meter (910); the terminal group also includes an inlet switch connection terminal group, the inlet switch connection terminal group, the meter connection terminal group (20) and the outlet switch connection terminal group are connected in series in the same electrical circuit; the expansion module connection terminal group (60) is electrically connected to the inlet switch connection terminal group when the expansion module needs to draw power from the electrical circuit; in the base unit, the expansion module position (14), the inlet switch position (12) and the outlet switch position (13) are arranged side by side along the direction d1; The base unit also includes a sampling device (950) disposed in the base (10), the sampling device (950) including a sampling circuit board (955) and a sampling element; The sampling element includes at least one of a current sampling element (956), a residual current transformer (957), a temperature sensor, and a voltage sensor; each of the current sampling elements (956) is used to collect the current of each phase of the electrical circuit; each of the voltage sensors is used to collect the voltage of each phase of the electrical circuit; the residual current transformer (957) is used to detect the residual current in the electrical circuit; the temperature sensor is used to collect the temperature of the environment in which the plug-in base is located and / or the temperature of at least a portion of the connected terminals of the terminal group; The base unit further includes a meter positioning detection mechanism (91) disposed on the base (10) for detecting whether the electricity meter (910) is installed in the meter position (11); and / or, the base unit further includes an incoming switch positioning detection mechanism (92) disposed on the base (10) for detecting whether the incoming switch (920) is installed in the incoming switch position (12); and / or, the base unit further includes an outgoing switch positioning detection mechanism (93) disposed on the base (10) for detecting whether the outgoing switch (930) is installed in the outgoing switch position (13). The meter placement detection mechanism (91) is used to connect with the energy meter (910) and / or the background control system and / or the control module (940) that controls the opening and closing of the outgoing switch (930); when the meter placement detection mechanism (91) detects that the energy meter (910) is not installed in place, it sends an alarm signal through the energy meter (910) and / or the background control system, and / or drives the outgoing switch (930) to open through the control module (940); and / or, the incoming switch placement detection mechanism (92) is used to connect with the energy meter (910) and / or the background control system and / or the control module (940) that controls the opening and closing of the outgoing switch (930); the incoming switch placement detection mechanism (930) is used to connect with the energy meter (910) and / or the background control system and / or the control module (940) that controls the opening and closing of the outgoing switch (930); the incoming switch placement detection mechanism (94 ... 2) When the incoming line switch (920) is detected to be not installed in place, an alarm signal is issued through the energy meter (910) and / or the background control system, and / or the outgoing line switch (930) is driven to open through the control module (940); and / or, the outgoing line switch position detection mechanism (93) is used to connect with the energy meter (910) and / or the background control system and / or the control module (940) that controls the opening and closing of the outgoing line switch (930); when the outgoing line switch position detection mechanism (93) detects that the outgoing line switch (930) is not installed in place, an alarm signal is issued through the energy meter (910) and / or the background control system, and / or the outgoing line switch (930) is driven to open through the control module (940); The base unit also includes a control module connection terminal group (50) fixedly mounted on the base (10) and located in the outgoing switch position (13). Each connection terminal of the control module connection terminal group (50) is used to plug and electrically connect with each wiring terminal of the control module (940). The control module (940) is used to control the opening and closing of the outgoing switch (930) by transmission cooperation with the operating device of the outgoing switch (930). The sampling circuit board (955) is also used to connect to the control module (940) to provide working power to the control module (940) and / or transmit the collected signals to the control module (940). The control module (940) is used to control the opening and closing of the outgoing switch (930) by cooperating with the operating device of the outgoing switch (930). In the base unit, the incoming line switch position (12) and the outgoing line switch position (13) are arranged side by side along direction d1, or the incoming line switch position (12) is arranged in direction d3 closer to the meter position (11) than the outgoing line switch position (13). The projection direction of the base unit is an orthogonal projection of direction d2. Each connection terminal of the meter connection terminal group (20) has one end for plugging into and electrically connecting to each wiring terminal of the energy meter (910), and the other end is fixed to the base (10) and covered by the first cable management cover plate (102). The first cable management cover plate (102) has a first shorting hole (1091) corresponding to each of the meter inlet connection terminal (21) and a second shorting hole (1092) corresponding to each of the meter outlet connection terminal (22). The base unit also includes a shorting device (960), which includes a shorting device housing (961) and a shorting component (962). The shorting component (962) includes components connected in series with a... The device has a first shorting part (963) and a second shorting part (964). One end of the first shorting part (963) protrudes outside the shorting device housing (961) and is correspondingly arranged with the first shorting hole (1091). One end of the second shorting part (964) protrudes outside the shorting device housing (961) and is correspondingly arranged with the second shorting hole (1092). The first shorting part (963) and the second shorting part (964) are respectively inserted into the first shorting hole (1091) and the second shorting hole (1092) to make contact and conduction with the corresponding meter inlet connection terminal (21) and meter outlet connection terminal (22) respectively, thus shorting the corresponding meter inlet connection terminal (21) and meter outlet connection terminal (22).

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