Plug-in base

Abstract

The utility model relates to the field of low-voltage electric appliances, in particular to a plug-in base, an electricity meter outgoing line connecting terminal is used for being electrically connected with each outgoing line wiring terminal of an electric energy meter in a plug-in manner along a direction d2 or a direction d3, each connecting terminal of an outgoing line switch connecting terminal group is used for being electrically connected with each wiring terminal of an outgoing line switch in a plug-in manner along the direction d2, and each connecting terminal of an outgoing line switch connecting terminal group is used for being electrically connected with each wiring terminal of the outgoing line switch. The outgoing line switch connection terminal group is also used for being electrically connected with an outgoing line external conductor, and the direction d2 is perpendicular to the direction d3; according to the plug-in base, the assembling efficiency of the plug-in base and the electrical device is improved, and the plug-in base is convenient to maintain.

Description

TECHNICAL FIELD

[0001] The utility model relates to low voltage electrical apparatus field, concretely relates to a plug-in base. BACKGROUND

[0002] In the existing metering box, an electric energy meter, an incoming line switch, an outgoing line switch and a control module are generally provided; in some metering boxes, other extension modules are also provided for functional needs; electrical devices in the metering box need to be electrically connected, and the existing technology mainly realizes this through wires and bolt connections; therefore, the existing metering box has the following problems: 1. There are many wire connection points, and wiring is complicated and inconvenient to maintain. 2. Maintenance can cause a long power outage time and a large power outage range. SUMMARY

[0003] The utility model discloses a plug-in base, which overcomes at least one defect of the prior art and improves the assembly efficiency of the plug-in base and electrical devices, thereby facilitating maintenance.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] A plug-in base has n base units and n≥1, and each base unit includes a base and a terminal group; the base includes a mounting site group arranged thereon, which includes an electric meter site for mounting an electric energy meter and an outgoing line switch site for mounting an outgoing line switch; the terminal group includes an electric meter connection terminal group at the electric meter site and an outgoing line switch connection terminal group at the outgoing line switch site, the electric meter connection terminal group includes electric meter outgoing line connection terminals for one-to-one plug-in electrical connection with outgoing line terminals of the electric energy meter, and the electric meter connection terminal group and the outgoing line switch connection terminal group are sequentially connected in series in the same electric circuit;

[0006] The electric meter outgoing line connection terminals are used for plug-in electrical connection with the outgoing line terminals of the electric energy meter along a direction d2 or a direction d3; 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 along the direction d2; the outgoing line switch connection terminal group is also used for electrical connection with an outgoing line external conductor;

[0007] The direction d2 and the direction d3 are perpendicular to each other.

[0008] Further, the electric meter connection terminal group also includes electric meter incoming line connection terminals for one-to-one plug-in electrical connection with incoming line terminals of the electric energy meter, the electric meter incoming line connection terminals are arranged one by one corresponding to the electric meter outgoing line connection terminals and are also used for electrical connection with an incoming line external conductor; each connection terminal of the electric meter connection terminal group is used for plug-in electrical connection with each terminal of the electric energy meter along the direction d2 or the direction d3.

[0009] Further, the terminal group further comprises an incoming line switch connection terminal group, the incoming line switch connection terminal group, the electric meter connection terminal group and the outgoing line switch connection terminal group are sequentially connected in the electric circuit, the incoming line switch connection terminal group comprises incoming line switch second connection terminals, each incoming line switch second connection terminal is used for plug-in electric connection with each incoming line terminal of the incoming line switch along the direction d2 or the direction d3.

[0010] Further, each of the incoming line switch second connection terminals is used for plug-in electric connection with each incoming line terminal of the incoming line switch along the direction d2.

[0011] Further, the incoming line switch connection terminal group and the outgoing line switch connection terminal group are sequentially arranged along the direction d1 and are located on the same side of the electric meter position in the direction d3, the direction d1, the direction d2 and the direction d3 are perpendicular to each other.

[0012] Further, the mounting position group further comprises an incoming line switch position for mounting the incoming line switch, the incoming line switch position and the outgoing line switch position are sequentially arranged along the direction d1, and the incoming line switch position and the outgoing line switch position are located on the same side of the electric meter position in the direction d3.

[0013] Further, the incoming line switch connection terminal group further comprises incoming line switch first connection terminals corresponding to the incoming line switch second connection terminals, each incoming line switch second connection terminal is used for plug-in electric connection with each outgoing line terminal of the incoming line switch along the direction d2, and each incoming line switch first connection terminal is used for plug-in electric connection with the incoming line terminal of the incoming line switch along the direction d2.

[0014] In the base unit, each incoming line switch second connection terminal is sequentially and spacedly arranged along the direction d1, each incoming line switch first connection terminal is sequentially and spacedly arranged along the direction d1, the corresponding incoming line switch first connection terminal and the incoming line switch second connection terminal are spacedly arranged along the direction d3, and the incoming line switch second connection terminal is arranged close to the electric meter position relative to the incoming line switch first connection terminal.

[0015] Further, the base further comprises an incoming line switch avoiding notch for avoiding the incoming line switch, the incoming line switch avoiding notch and the outgoing line switch position are sequentially arranged along the direction d1, and the incoming line switch avoiding notch and the outgoing line switch position are located on the same side of the electric meter position; the incoming line switch second connection terminal is located in the incoming line switch avoiding notch.

[0016] Further, the base further comprises an incoming line switch avoiding notch for avoiding the incoming line switch.

[0017] Further, each connection terminal of the electric meter connection terminal group is sequentially and spacedly arranged along the direction d1, and the electric meter incoming line connection terminal and the electric meter outgoing line connection terminal are sequentially and alternately spacedly arranged along the direction d1.

[0018] The outlet switch connection terminal group comprises an outlet switch first connection terminal and an outlet switch second connection terminal; in the base unit, each outlet switch first connection terminal is arranged in sequence and in parallel along a direction d1 and is used for plug-in electrical connection with each incoming line connection terminal of the outlet switch, each outlet switch second connection terminal is arranged in sequence and in parallel along the direction d1 and is used for plug-in electrical connection with each outlet line connection terminal of the outlet switch, the outlet switch first connection terminal and the outlet switch second connection terminal are arranged in one-to-one correspondence, the outlet switch first connection terminal and the outlet switch second connection terminal corresponding to each other are arranged in parallel and in sequence along a direction d3, and the outlet switch first connection terminal is arranged close to the electric meter position relative to the outlet switch second connection terminal.

[0019] The plug-in base can realize plug-in installation of the electric energy meter and the outlet switch, realizes position fixation and circuit connection at the same time, significantly improves installation efficiency of the electric energy meter and the outlet switch, saves wiring operation, thereby saving manpower, and the outlet switch can be disassembled or replaced in a hot plug manner; and the electric meter outlet connection terminal can be adjusted in a plug-in direction according to needs, so that the plug-in manner of the plug-in base and the electric energy meter is more flexible.

[0020] In addition, the plug-in direction of the incoming line switch second connection terminal and the incoming line switch can be adjusted according to actual needs, and the plug-in manner of the plug-in base and the incoming line switch is more flexible. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structure schematic view of the plug-in base of the utility model under a first visual angle, the plug-in base has a base unit, and the plug-in base is used for installing a four-phase (namely three-phase four-wire) electric energy meter, a four-phase (namely three-phase four-wire) incoming line switch and a four-phase (namely three-phase four-wire) outlet switch;

[0022] Figure 2 is a structure schematic view of the plug-in base of the utility model under a second visual angle, the plug-in base has a base unit, and the plug-in base is used for installing a four-phase (namely three-phase four-wire) electric energy meter, a four-phase (namely three-phase four-wire) incoming line switch and a four-phase (namely three-phase four-wire) outlet switch;

[0023] Figure 3 is a structure schematic view of the plug-in base of the utility model under a second visual angle, the plug-in base has a base unit, and the plug-in base is used for installing a four-phase (namely three-phase four-wire) electric energy meter, a four-phase (namely three-phase four-wire) incoming line switch and a four-phase (namely three-phase four-wire) outlet switch;

[0024] Figure 4 is a structure schematic view of the plug-in base of the utility model under a second visual angle, the plug-in base has a base unit, and the plug-in base is used for installing a four-phase (namely three-phase four-wire) electric energy meter, a four-phase (namely three-phase four-wire) incoming line switch and a four-phase (namely three-phase four-wire) outlet switch; Figure 1Structure schematic diagram of copper bar circuit structure of plug-in base in first visual angle, used for cooperating with four-phase (i.e. three-phase four-wire) electric energy meter, four-phase (i.e. three-phase four-wire) incoming line switch and four-phase (i.e. three-phase four-wire) outgoing line switch;

[0025] Figure 5 The utility model discloses a plug-in base Figure 1 Structure schematic diagram of copper bar circuit structure of plug-in base in second visual angle, used for cooperating with four-phase (i.e. three-phase four-wire) electric energy meter, four-phase (i.e. three-phase four-wire) incoming line switch and four-phase (i.e. three-phase four-wire) outgoing line switch;

[0026] Figure 6 Structure schematic diagram of outgoing line switch and control module in two visual angles;

[0027] Figure 7 Structure schematic diagram of outgoing line switch, control module and sampling device in assembled state; in subgraph (71), outgoing line switch, control module, sampling device are in assembled state; in subgraph (72), control module and sampling device are in assembled state, and outgoing line switch and control module, sampling device are in separated state;

[0028] Figure 8 Structure schematic diagram of sampling device and control module;

[0029] Figure 9 Structure schematic diagram of control module;

[0030] Figure 10 Structure schematic diagram of outgoing line switch and sampling device;

[0031] Figure 11 Structure schematic diagram of plug-in base in second visual angle, and the plug-in base has a base unit, and at least a second indication structure is shown;

[0032] Figure 12 Structure schematic diagram of plug-in base in second visual angle, and at least a first wire arrangement cover plate, a second incoming line cover plate and a second outgoing line cover plate are shown, the plug-in base has a base unit, and the plug-in base is used for installing four-phase (i.e. three-phase four-wire) electric energy meter, four-phase (i.e. three-phase four-wire) incoming line switch and four-phase (i.e. three-phase four-wire) outgoing line switch;

[0033] Figure 13 Explosion view of plug-in base, and the plug-in base has a base unit, and is used for installing four-phase (i.e. three-phase four-wire) electric energy meter, four-phase (i.e. three-phase four-wire) incoming line switch and four-phase (i.e. three-phase four-wire) outgoing line switch;

[0034] Figure 14 is the utility model Figure 13 is the enlarged view of the 9000 part of the utility model

[0035] Figure 15 is the structure schematic view of the electric meter connecting terminal group, the second copper bar, the third copper bar and the insulating partition plate of the utility model, wherein the subgraph (151) is the structure schematic view of the electric meter connecting terminal group, the second copper bar, the third copper bar and the insulating partition plate under the assembling state, and the subgraph (152) is the structure schematic view of the electric meter connecting terminal group, the second copper bar, the third copper bar and the insulating partition plate under the disassembling state;

[0036] Figure 16 is the structure schematic view of the plug-in base under the second visual angle, and the plug-in base has two base units;

[0037] Figure 17 is the structure schematic view of the copper bar circuit structure, the four-phase (namely three-phase four-wire) incoming line switch and the four-phase (namely three-phase four-wire) outgoing line switch and the control module under the second visual angle and under the assembling state, wherein the fifth copper bar connects the incoming line switch first connecting terminal of each base unit together;

[0038] Figure 18 is the structure schematic view of the plug-in base under the second visual angle, and at least the first wire arrangement cover plate, the second incoming line cover plate and the second outgoing line cover plate are shown, the plug-in base has one base unit and is used for installing the electric energy meter of two-phase (namely single-phase two-wire), the incoming line switch of two-phase (namely single-phase two-wire) and the outgoing line switch of two-phase (namely single-phase two-wire);

[0039] Figure 19 is the structure schematic view of the plug-in base, and the plug-in base has two base units, and the plug-in base is used for installing the electric energy meter of two-phase (namely single-phase two-wire), the incoming line switch of two-phase (namely single-phase two-wire) and the outgoing line switch of two-phase (namely single-phase two-wire);

[0040] Figure 20 is the utility model Figure 19 in the first explosion view of the plug-in base;

[0041] Figure 21 is the second explosion view of the plug-in base in the utility model Figure 19 ;

[0042] Figure 22is a structure schematic view of the plug-in base of the utility model, at least shows the assembly relation of the copper bar circuit structure, the fifth copper bar and the base main body, the plug-in base has two base units, is used to install two-phase (namely single-phase two lines) electric energy meter, two-phase (namely single-phase two lines) incoming line switch and two-phase (namely single-phase two lines) outgoing line switch, and each base unit shares incoming line position and incoming line connection terminal group;

[0043] Figure 23 is the structure schematic view of the base main body of the plug-in base in Figure 22 , and the two base main bodies are integrated structure;

[0044] Figure 24 is the structure schematic view of the copper bar circuit structure and the fifth copper bar under the assembly state of the plug-in base in Figure 22 ;

[0045] Figure 25 is the structure schematic view of the plug-in base under the second visual angle, and the plug-in base has two base units, and the two base units have independent incoming line position each other;

[0046] Figure 26 is the structure schematic view of the copper bar circuit structure of the plug-in base in Figure 25 ;

[0047] Figure 27 is the structure schematic view of the plug-in base under the second visual angle, and the plug-in base has one base unit, and the base unit is equipped with incoming line switch avoiding gap for avoiding incoming line switch;

[0048] Figure 28 is the structure schematic view of the plug-in base under the second visual angle, and compared with the plug-in base shown in Figure 27 , second copper bar and electric meter incoming line connection terminal are not set;

[0049] Figure 29 is the structure schematic view of the plug-in base under the second visual angle, and it has one base unit, and first short-circuit hole and second short-circuit hole are equipped on the first wire arrangement plate;

[0050] Figure 30 is the structure schematic view of the short-circuit device.

[0051] Explanation of reference signs

[0052] 10 base, base body 101, first wire arrangement cover plate 102, insulating partition plate 103, second wire arrangement cover plate 104, third wire arrangement cover plate 105, incoming wire cover plate set 106, first incoming wire cover plate 1061, second incoming wire cover plate 1062, outgoing wire cover plate set 107, first outgoing wire cover plate 1071, second outgoing wire cover plate 1072; intermediate wire arrangement plate set 108, first short-circuit hole 1091, second short-circuit hole 1092, incoming wire switch avoiding notch 9211;

[0053] 11 electric meter position, 12 incoming wire switch position, 13 outgoing wire switch position, 14 expansion module position, 15 incoming wire position, 16 outgoing wire position, 17 incoming wire chamber, 18 outgoing wire chamber, partition 19;

[0054] Electric meter connection terminal set 20, electric meter incoming wire connection terminal 21, electric meter outgoing wire connection terminal 22; incoming wire side connection terminal set 30, incoming wire side first connection terminal 31, incoming wire side second connection terminal 32; outgoing wire side connection terminal set 40, outgoing wire side first connection terminal 41, outgoing wire side second connection terminal 42; control module connection terminal set 50; expansion module connection terminal set 60;

[0055] External connection incoming wire connection terminal 70; external connection outgoing wire connection terminal 80;

[0056] Electric meter to position detection mechanism 91; incoming wire switch to position detection mechanism 92; outgoing wire switch to position detection mechanism 93;

[0057] First copper bar 110, first copper bar head section 1101, first copper bar tail section 1102; second copper bar 120, second copper bar head section 1201, second copper bar middle section 1202, second copper bar tail section 1203; third copper bar 130, third copper bar head section 1301, third copper bar middle section 1302, third copper bar tail section 1303; fourth copper bar 140, fourth copper bar head section 1401, fourth copper bar tail section 1402; fifth copper bar 150, fifth copper bar plug-in section 1501, fifth copper bar middle section 1502, fifth copper bar mating section 1503;

[0058] Electric energy meter 910;

[0059] Incoming wire switch 920;

[0060] Outgoing wire switch 930, operating member 931, pulling member 932, limiting shoulder 933, incoming wire switch incoming wire terminal 934, outgoing wire switch outgoing wire terminal 935, handle 936, static contact 9371, dynamic contact 9372, arc extinguishing chamber 938, protection mechanism 939;

[0061] Control module 940, driving mechanism 941, control circuit board 942, tripping mechanism 943, motor 944, transmission gear set 945, driving gear member 946, control module connection terminal 947;

[0062] 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 line board 955, current sampling piece 956, residual current transformer 957, sampling device shell 958;

[0063] Short circuit device 960, short circuit device shell 961, short circuit piece 962, first short circuit part 963, second short circuit part 964. DETAILED DESCRIPTION

[0064] The following embodiments combined with the drawings further illustrate the specific implementation of the plug-in base of the utility model. The plug-in base of the utility model is not limited to the description of the following embodiments.

[0065] The plug-in base of the utility model is applied to a metering box (not shown in the figure), which is an electrical cabinet specially used for electric energy metering, or an electrical cabinet with structures such as electric energy meter 910, incoming line switch 920 and outgoing line switch 930 for electric energy metering and also having other functions; the metering box is usually provided with electric energy meter 910, incoming line switch 920 (the incoming line switch 920 refers to a switch appliance connected in series between the electric energy meter 910 and the power supply side), outgoing line switch 930 (the outgoing line switch 930 refers to a switch appliance connected in series between the electric energy meter 910 and the load side), etc., and the electric energy meter 910, incoming line switch 920 and outgoing line switch 930 are arranged one by one and used in cooperation; the plug-in base of the utility model is at least used for carrying the electric energy meter 910 and the outgoing line switch 930, and the incoming line switch 920 can be carried on the plug-in base according to actual needs or fixed on a structure (such as the bottom wall of the metering box or a mounting rail fixed in the metering box, etc.) outside the plug-in base in the metering box.

[0066] Further, as shown in Figures 1-2 , the metering box is also provided with an expansion module for realizing function expansion, and the expansion module can be carried on the plug-in base, or the expansion module can be arranged on a structure outside the plug-in base, which is arranged by a person skilled in the art according to actual needs.

[0067] Further, the incoming line switch 920 and the outgoing line switch 930 can be realized by the prior art, for example, a type of switch appliance at least having an operating mechanism and a contact system, and the operating mechanism is connected in transmission with the contact system to close and open the contact system.

[0068] Specifically, the incoming line switch 920 is realized by a disconnector, which can adopt the prior art disconnector, and the specific structure is not described here.

[0069] Specifically, as shown in Figure 3 , 6, 10, the outgoing switch 930 is realized by a circuit breaker (for example, a common circuit breaker, a residual current circuit breaker or a fee control circuit breaker, etc.). The circuit breaker includes an operating member 931, and an external force operates the operating member 931 to drive the circuit breaker to close and open. The circuit breaker includes a 1P type circuit breaker unit, the number of circuit breaker units is ≥2, each circuit breaker unit includes an operating device and a contact system, the operating device includes a handle 936 (that is, the operating member of the outgoing switch 930) and an operating mechanism, the contact system includes a movable contact 9372 and a static contact 9371 used in cooperation, the handle 936 is connected in transmission with the operating mechanism, and the operating mechanism is connected in transmission with the movable contact 9372; the handle 936 of each circuit breaker unit is connected with the operating member 931 to realize the synchronous operation of each handle 936. The circuit breaker unit further includes an arc extinguishing chamber 938 used in cooperation with the contact system and a protection mechanism 939 (for example, an intelligent release), and the protection mechanism 939 drives the operating mechanism to act when a short circuit and overload fault occur in the phase where the circuit breaker unit is located, so as to break the circuit breaker unit. Further, each circuit breaker unit has a housing independent of each other, or is arranged in a common housing and an insulation partition wall is arranged between adjacent circuit breaker units. Further, the outgoing switch 930 is further provided with a pulling member 932 for an operator to pull out the outgoing switch 930.

[0070] Further, as shown in Figure 3 、 6 -7, the metering box is further provided with a control module 940 cooperating with the outgoing switch 930 for driving the outgoing switch 930 to close and open. Further, the control module 940 is connected in transmission with the operating device, and the control module 940 can be realized by the prior art, for example, the control module 940 includes a driving mechanism 941, a control circuit board 942 and a release mechanism 943, the driving mechanism 941 includes a motor 944, a transmission gear set 945 and a driving gear member 946, the motor 944 is connected with the control circuit board 942, the motor 944 is connected in transmission with the driving gear member 946 through the transmission gear set 945, the driving gear member 946 is connected in transmission with the handle 936 of each circuit breaker unit, the release mechanism 943 is connected with the control circuit board 942, and the release mechanism 943 is connected in transmission with the operating mechanism of the circuit breaker unit; the control circuit board 942 controls the motor 944 to rotate to drive each circuit breaker unit to close and break synchronously; the control circuit board 942 also controls the release mechanism 943 to act to drive the operating mechanism of each circuit breaker unit to release. Further, the control module 940 and the outgoing switch 930 are detachable split type structure or integral type structure.

[0071] Further, the metering box further comprises a box body (not shown in the figures) and a box door (not shown in the figures), and the plug-in base, the incoming line switch 920, the outgoing line switch 930, the control module 940, the expansion module, etc. are all arranged in the space formed by the box body and the box door. Figure 3 and Figure 6 As shown in the figures, the outgoing line switch 930 comprises a limiting shoulder 933 arranged on the shell; the box door is provided with a box door aperture (not shown in the figures) through which the operating member 931 of the outgoing line switch 930 protrudes outward, and the side edge of the box door aperture is in abutting limiting cooperation with the limiting shoulder 933 to reliably fix the outgoing line switch 930 at the working position (for example, in the outgoing line switch position 13 described later). Further, the incoming line switch 920 comprises a limiting shoulder 933 arranged on the shell, and the box door is used to abut against the limiting member 933 to reliably fix the incoming line switch 920 at the working position (for example, in the incoming line switch position 12 described later).

[0072] Specifically, as shown in the figures, Figure 3 and 6 the incoming line switch 920 and the outgoing line switch 930 both comprise two groups of limiting shoulders 933, and the two groups of limiting shoulders 933 on the same switch are both arranged on the shell of the switch and located on both sides of the operating member 931 of the switch.

[0073] Further, the phase numbers of the electric energy meter 910, the incoming line switch 920 and the outgoing line switch 930 are the same.

[0074] Specifically, the electric energy meter 910 is a two-phase electric energy meter (or a single-phase two-line electric energy meter) and comprises a P phase and an N phase, and correspondingly, the incoming line switch 920 is a two-phase disconnector (or a single-phase two-line disconnector) and comprises a P phase and an N phase, and the outgoing line switch 930 is a two-phase circuit breaker (or a single-phase two-line circuit breaker) and comprises a P phase and an N phase. Alternatively, the electric energy meter 910 is a four-phase electric energy meter (or a three-phase four-line electric energy meter) and comprises an A phase, a B phase, a C phase and an N phase, and correspondingly, the incoming line switch 920 is a four-phase disconnector (or a three-phase four-line disconnector) and comprises an A phase, a B phase, a C phase and an N phase, and the outgoing line switch 930 is a four-phase circuit breaker (or a three-phase four-line circuit breaker) and comprises an A phase, a B phase, a C phase and an N phase.

[0075] As shown in the figures, Figures 1-2, 11-13, 16, 18-23, 25, 27, the utility model discloses the plug -in base, its length, width and height direction are direction d1, direction d2 and direction d3 respectively, and direction d1, direction d2 and direction d3 are perpendicular to each other. Further, the utility model discloses the plug -in base includes m base unit group and m is equal to or greater than 1, that is to say, the number of base unit group m is equal to or greater than 1, and the base unit group includes n base units and n is equal to or greater than 1, that is to say, the number of base unit n is equal to or greater than 1;The base unit includes the terminal group fixedly arranged relative to base 10;The base 10 includes the installation site group set on it, and the installation site group includes the electric meter site 11 for installing electric energy meter 910 and the outgoing line switch site 13 for installing outgoing line switch 930, which are set correspondingly, and the electric meter site 11 and the outgoing line switch site 13 are arranged side by side along direction d3. The terminal group includes the electric meter connection terminal group 20 and the outgoing line switch connection terminal group that are set correspondingly and are sequentially connected in the same electric circuit;The electric meter connection terminal group 20 is arranged at the electric meter site 11 (for example, the connection terminal of the electric meter connection terminal group 20, at least the part for being electrically connected with the terminal of electric energy meter 910 is located in the electric meter site 11), and the electric meter connection terminal group 20 includes the electric meter outgoing line connection terminal 22 for being electrically connected with the outgoing line terminal of electric energy meter 910 one by one, and the number of electric meter outgoing line connection terminal 22 is same as the phase number of electric energy meter 910, and the number of terminal (including incoming line terminal and outgoing line terminal) of electric energy meter 910 is twice the phase number of electric energy meter 910;The outgoing line switch connection terminal group is arranged at the outgoing line switch site 13 (for example, the connection terminal of the outgoing line switch connection terminal group, at least the part for being electrically connected with the terminal of outgoing line switch 930 is located in the outgoing line switch site 13), and the connection terminal of the outgoing line switch connection terminal group is used for being electrically connected with each terminal of outgoing line switch 930, and the number of connection terminal of the outgoing line switch connection terminal group and the number of terminal of outgoing line switch 930 are twice the phase number of outgoing line switch 930;The outgoing line switch connection terminal group is also used for being electrically connected with the outgoing line external conductor. The outgoing line external conductor refers to the conductor connected between outgoing line switch 930 and lower electric circuit / secondary electric circuit or the conductor connected between outgoing line switch 930 and load side. The electric meter site 11, the outgoing line switch site 13 and the incoming line switch site 12, the incoming line site 15, the outgoing line site 16 described below all refer to the corresponding three-dimensional space (that is, the electric meter site 11 is the three-dimensional space for installing electric energy meter 910, the outgoing line switch site 13 is the three-dimensional space for installing outgoing line switch 930, the incoming line switch site 12 is the three-dimensional space for installing incoming line switch 920, the incoming line site 15 is the three-dimensional space for installing incoming line connection terminal group, and the outgoing line site 16 is the three-dimensional space for installing outgoing line connection terminal group), not just a plane position.

[0076] The plug-in base can realize plug-in installation and dismounting of the electric energy meter 910 and the outgoing line switch 930, simplifies assembly and wiring operation between the plug-in base and the electric energy meter 910 and the outgoing line switch 930, significantly improves installation and wiring efficiency, saves manpower, and can dismount or replace the outgoing line switch 930 in a hot plug manner.

[0077] Further, the incoming line terminal of the electric energy meter 910 is electrically connected with an incoming line external conductor through the incoming line switch 920. The incoming line external conductor refers to a conductor connected between the incoming line switch 920 and a power supply side or a conductor connected between the incoming line switch 920 and a superior electric circuit.

[0078] As shown in Figures 16-17 , 19-26, in the base unit group, when the number n of base units is greater than or equal to 2, the base units are arranged side by side along the direction d1. Further, in the base unit group, the base 10 of each base unit is an integral structure or a detachable split structure, specifically, the base main body 101 of each base 10 is an integral structure or a detachable split structure.

[0079] In the plug-in base, when the number m of base unit groups is greater than or equal to 2, the base unit groups are arranged side by side and spaced apart along the direction d1 or the direction d3. Further, each base unit group is an integral structure or a detachable split structure. In the plug-in base, each base unit group is preferably an integral structure.

[0080] As shown in Figures 1-2 , 4-5, 8, 11-14, 18, 29-30, the following is a first embodiment of the plug-in base of the utility model.

[0081] As shown in Figures 1-2As shown in FIGS. 11-14 and 18, 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 the base 10 and the terminal group fixedly arranged relative to the base 10. The base 10 includes a terminal group arranged thereon, which includes the meter position 11 for mounting the electric energy meter 910 and the outlet switch position 13 for mounting the outlet switch 930 arranged one by one. The terminal group includes the meter connection terminal group 20 and the outlet switch connection terminal group arranged one by one and connected in series in the same electric circuit. The meter connection terminal group 20 is arranged in the meter position 11, each connection terminal of the meter connection terminal group 20 is used for plug-in electrical connection with each terminal of the electric energy meter 910, the number of connection terminals of the meter connection terminal group 20 and the number of terminals of the electric energy meter 910 are both twice the number of phases of the electric energy meter 910. The meter connection terminal group 20 is also used for electrical connection with the incoming line external conductor through the incoming line switch 920. The outlet switch connection terminal group is arranged in the outlet switch position 13, each connection terminal of the outlet switch connection terminal group is used for plug-in electrical connection with each terminal of the outlet switch 930, the number of connection terminals of the outlet switch connection terminal group and the number of terminals of the outlet switch 930 are both twice the number of phases of the outlet switch 930. The outlet switch connection terminal group is also used for electrical connection with the outgoing line external conductor, i.e., the incoming line external conductor, the meter connection terminal group 20, the outlet switch connection terminal group, and the outgoing line external conductor are connected in series in the electric circuit.

[0082] The plug-in base of the first embodiment realizes plug-in mounting and dismounting of the electric energy meter 910 and the outlet switch 930, simplifies assembly and wiring operation between the plug-in base and the electric energy meter 910 and the outlet switch 930, significantly improves installation and wiring efficiency, saves manpower, and can dismount or replace the electric energy meter 910 and the outlet switch 930 through hot plug-in.

[0083] As Figures 1-2, 4-5, 11-20, 22, 24-27, the meter connection terminal group 20 includes meter incoming line connection terminals 21 and meter outgoing line connection terminals 22, the meter incoming line connection terminals 21 and the meter outgoing line connection terminals 22 are arranged one-to-one, the meter incoming line connection terminals 21 are used for one-to-one plug-in electrical connection with the incoming line connection terminals of the electric energy meter 910 and are also used for electrical connection with the incoming line external conductor through the incoming line switch 920, that is, each meter incoming line connection terminal 21 is respectively plugged into electrical connection with each incoming line connection terminal of the electric energy meter 910 and is also electrically connected with the incoming line external conductor through the incoming line switch 920, the meter outgoing line connection terminals 22 are used for one-to-one plug-in electrical connection with the outgoing line connection terminals of the electric energy meter 910, that is, each meter outgoing line connection terminal 22 is respectively plugged into electrical connection with each outgoing line connection terminal of the electric energy meter 910, the number of meter incoming line connection terminals 21, the number of incoming line connection terminals of the electric energy meter 910, the number of meter outgoing line connection terminals 22, and the number of outgoing line connection terminals of the electric energy meter 910 are all the same as the number of phases of the electric energy meter 910. The outgoing line switch connection terminal group includes outgoing line switch first connection terminals and outgoing line switch second connection terminals, the outgoing line switch first connection terminals and the outgoing line switch second connection terminals are arranged one-to-one, the outgoing line switch first connection terminals are used for one-to-one plug-in electrical connection with the incoming line connection terminals of the outgoing line switch 930, that is, each outgoing line switch first connection terminal is respectively plugged into electrical connection with each incoming line connection terminal of the outgoing line switch 930, the outgoing line switch first connection terminals are one-to-one electrically connected with the meter outgoing line connection terminals 22, the outgoing line switch second connection terminals are used for one-to-one plug-in electrical connection with the outgoing line connection terminals of the outgoing line switch 930, that is, each outgoing line switch second connection terminal is respectively plugged into electrical connection with each outgoing line connection terminal of the outgoing line switch 930 and is also used for electrical connection with the outgoing line external conductor, the number of outgoing line switch first connection terminals, the number of incoming line connection terminals of the outgoing line switch 930, the number of outgoing line switch second connection terminals, and the number of outgoing line connection terminals of the outgoing line switch 930 are all the same as the number of phases of the outgoing line switch 930.

[0084] Specifically, as shown in Figures 1-2 , 4-5, 11-17, the electric energy meter 910 is a four-phase electric energy meter (or also referred to as a three-phase four-wire electric energy meter); the number of meter incoming line connection terminals 21, the number of incoming line connection terminals of the electric energy meter 910, the number of meter outgoing line connection terminals 22, and the number of outgoing line connection terminals of the electric energy meter 910 are all four. The outgoing line switch 930 is a four-phase circuit breaker (or also referred to as a three-phase four-wire circuit breaker); the number of outgoing line switch first connection terminals, the number of incoming line connection terminals of the outgoing line switch 930, the number of outgoing line switch second connection terminals, and the number of outgoing line connection terminals of the outgoing line switch 930 are all four.

[0085] Specifically, as shown in Figures 18-20As shown in Figures 22-27, 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 energy 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 energy meter's incoming connection terminals 21, the number of the energy meter 910's incoming wiring terminals, the number of the energy meter's outgoing connection terminals 22, and the number of the energy meter 910's outgoing wiring terminals are all 2.

[0086] 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.

[0087] Specifically, such as Figures 1-3 As shown in Figures 11-15, 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.

[0088] like Figures 1-3 As shown in Figures 11-15, 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.

[0089] like Figures 1-2 As shown in Figures 4-5 and 11-15, 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.

[0090] 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.

[0091] The second connection terminal of the incoming line switch is used to be electrically connected with the incoming line terminal of the incoming line switch 920 along the direction d3 or the direction d2, that is, when the incoming line switch 920 is installed to the plug-in base, the second connection terminal of the incoming line switch is electrically connected with the incoming line terminal of the incoming line switch 920 along the direction d3, or the second connection terminal of the incoming line switch is electrically connected with the incoming line terminal of the incoming line switch 920 along the direction d2.

[0092] Specifically, as shown in Figures 1-3 , 11-15, in the plug-in base of the first embodiment, the second connection terminal of the incoming line switch is electrically connected with the incoming line terminal of the incoming line switch 920 along the direction d2.

[0093] Specifically, one end of each connection terminal of the electric meter connection terminal group 20 protrudes in the electric meter position 11, one end of each second connection terminal of the incoming line switch protrudes in the incoming line switch position 12, and one end of each connection terminal of the outgoing line switch connection terminal group protrudes in the outgoing line switch position 13, that is, each connection terminal of the electric meter connection terminal group 20 is a male head, and each connection terminal of the electric meter 910 is a female head, each connection terminal of the incoming line switch connection terminal group is a male head, and each connection terminal of the incoming line switch 920 is a female head, and each connection terminal of the outgoing line switch connection terminal group is a male head, and each connection terminal of the outgoing line switch 930 is a female head.

[0094] It should be pointed out that each connection terminal of the electric meter connection terminal group 20, each second connection terminal of the incoming line switch, and each connection terminal of the outgoing line switch connection terminal group can be realized by the prior art, such as a plug-in type connection terminal or a column type plug-in connection terminal, and the connection terminals of the electric meter 910, the incoming line switch 920, and the outgoing line switch 930 can also be realized by the prior art, such as a bus clip type connection terminal matched with the plug-in type connection terminal or a connection terminal matched with the column type plug-in connection terminal.

[0095] As other embodiments of each connection terminal of the electric meter connection terminal group 20, each second connection terminal of the incoming line switch, and each connection terminal of the outgoing line switch connection terminal group, each connection terminal of the electric meter connection terminal group 20 is a female head, each connection terminal of the electric meter 910 is a male head, and they are electrically connected by plugging; each connection terminal of the second connection terminal of the incoming line switch is a female head, each connection terminal of the incoming line switch 920 is a male head, and they are electrically connected by plugging; and each connection terminal of the outgoing line switch connection terminal group is a female head, each connection terminal of the outgoing line switch 930 is a male head, and they are electrically connected by plugging.

[0096] As shown in Figures 1-2As shown in Figures 4-5, 11-15, and 18, 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.

[0097] 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.

[0098] 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.

[0099] Furthermore, the second connection terminals of each of the incoming line switches are arranged side by side at intervals along direction d1.

[0100] 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.

[0101] like Figures 1-2 As shown in 11-14 and 18, 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. The 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 in 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.

[0102] 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.

[0103] 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.

[0104] like Figures 1-2 As shown in Figures 11-14, 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 outside the plug-in base). The outlet-side connection terminal group 40 serves as an outlet... The switch connection terminal group, the outgoing side connection terminal group 40 includes an outgoing side first connection terminal 41, which serves as the first connection terminal of the outgoing switch, and an outgoing side second connection terminal 42, which serves as the second connection terminal of the outgoing switch. That is, the outgoing side first connection terminal 41 is used to plug and electrically connect with the incoming wiring terminal of the outgoing switch 930 (that is, the external wiring terminal corresponding to the outgoing side first connection terminal 41), and the outgoing side second connection terminal 42 is used to plug and electrically connect with the outgoing wiring terminal of the outgoing switch 930 (that is, the external wiring terminal corresponding to the outgoing side second connection terminal 42). The outgoing side second connection terminal 42 is also used to electrically connect with the outgoing external conductor.

[0105] like Figures 4-5 As shown in Figures 13-15, 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 in a one-to-one manner. 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 in a one-to-one manner. 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.

[0106] The second copper bar 120 and the third copper bar 130 omit the wires for connecting the electric energy meter 910, the incoming line switch 920 and the outgoing line switch 930 in series, greatly improving the installation convenience and aesthetics, and directly realizing the second connection terminal 32 on the incoming line side and the first connection terminal 41 on the outgoing line side, reducing the number of parts and simplifying the structure of the plug-in base.

[0107] Specifically, the second copper bar 120 includes a second copper bar head section 1201, a second copper bar middle section 1202 and a second copper bar tail section 1203 connected in sequence, the second copper bar head section 1201 is connected and electrically connected with the corresponding electric meter incoming line connection terminal 21, and the second copper bar tail section 1203 serves as the corresponding incoming line side second connection terminal 32; the third copper bar 130 includes a third copper bar head section 1301, a third copper bar middle section 1302 and a third copper bar tail section 1303 connected in sequence, the third copper bar head section 1301 is connected and electrically connected with the corresponding electric meter outgoing line connection terminal 22, and the third copper bar tail section 1303 serves as the corresponding outgoing line side first connection terminal 41. Further, the second copper bar head section 1201 is connected with the corresponding electric meter incoming line connection terminal 21 by welding or through fasteners (such as bolts or rivets, etc.); the third copper bar head section 1301 is connected with the corresponding electric meter outgoing line connection terminal 22 by welding or through fasteners (such as bolts or rivets, etc.).

[0108] 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 bar circuit structure is the orthogonal projection of direction d1, the first copper bar middle section 1202 and the third copper bar middle section 1302 are arranged side by side along direction d2, that is, all the first copper bar middle sections 1202 are located on one side of all the third copper bar middle sections 1302 in direction d2, or all the third copper bar middle sections 1302 are located on one side of all the first copper bar middle sections 1202 in direction d2.

[0109] Specifically, the base 10 is provided with second copper bar holes (not shown in the figure) corresponding to the second copper bars 120 and third copper bar holes (not shown in the figure) corresponding to the third copper bars 130, the parts of each second copper bar 120 except the second connection terminal of the incoming line switch (i.e. the second connection terminal on the incoming line side 32) are located in the corresponding second copper bar hole, and the parts of each third copper bar 130 except the first connection terminal of the outgoing line switch (i.e. the first connection terminal on the outgoing line side 41) are located in the corresponding third copper bar connection hole.

[0110] Specifically, the base 10 comprises a base body 101, a first wire arrangement cover plate 102 and an insulating partition plate 103. The first wire arrangement cover plate 102, the insulating partition plate 103, the mounting position groups and the base units are one-to-one correspondingly arranged. The first wire arrangement cover plate 102 is fixedly connected with the base body 101. In the direction d2, the insulating partition plate 103 is located between the base body 101 and the first wire arrangement cover plate 102 and between the second copper bar intermediate segment 1202 and the third copper bar intermediate segment 1302. As shown in Figure 5 and 13 The projection direction of the plug-in base is the orthogonal projection of the direction d2. The projection direction of the base unit is the orthogonal projection of the direction d2. The projection direction of the copper bar circuit structure is the orthogonal projection of the direction d2. In the same base unit, part of the second copper bar intermediate segment 1202 and part of the third copper bar intermediate segment 1302 are cross arranged. The insulating partition plate 103 at least separates the cross part of the second copper bar intermediate segment 1202 and the third copper bar intermediate segment 1302. The part of the second copper bar 120 except the incoming line side second connecting terminal 32 (i.e. the second copper bar first segment 1201 and the second copper bar intermediate segment 1202) and the part of the third copper bar 130 except the outgoing line side first connecting terminal 41 (i.e. the third copper bar first segment 1301 and the third copper bar intermediate segment 1302) are all shielded by the first wire arrangement cover plate 102.

[0111] The insulating partition plate 103 increases the creepage distance and the insulation gap between the second copper bar 120 and the third copper bar 130. The first wire arrangement cover plate 102 significantly reduces the part of the second copper bar 120 and the third copper bar 130 exposed to the outside, improves the safety and the aesthetic appearance.

[0112] Specifically, the insulation partition plate 103 is provided with a second copper bar slot corresponding to the second copper bar middle section 1202 on one side and a third copper bar slot corresponding to the third copper bar middle section 1302 on the other side; the projection direction of the plug-in base is the orthogonal projection of the direction d2, and the projection direction of the base unit is the orthogonal projection of the direction d2, the second copper bar middle section 1202 overlapping with the insulation partition plate 103 is inserted into the corresponding second copper bar slot; the projection direction of the plug-in base is the orthogonal projection of the direction d2, and the projection direction of the base unit is the orthogonal projection of the direction d2, the third copper bar middle section 1302 overlapping with the insulation partition plate 103 is inserted into the corresponding third copper bar slot. Further, in the orthogonal projection of the direction d2 of the plug-in base, the orthogonal projection of the direction d2 of the base unit, and the orthogonal projection of the direction d2 of the copper bar circuit structure, the second copper bar 120 overlapping with the insulation partition plate 103 is a first type of second copper bar, and the rest of the second copper bar 120 is a second type of second copper bar. The second copper bar hole matched with the first type of second copper bar is formed by the cooperation of the base body 101, the insulation partition plate 103 and the first wire arrangement cover plate 102, and the second copper bar hole matched with the second type of second copper bar is formed by the cooperation of the base body 101 and the first wire arrangement cover plate 102; in the orthogonal projection of the direction d2 of the plug-in base, the orthogonal projection of the direction d2 of the base unit, and the orthogonal projection of the direction d2 of the copper bar circuit structure, the third copper bar 130 overlapping with the insulation partition plate 103 is a first type of third copper bar, and the rest of the third copper bar 130 is a second type of third copper bar. The third copper bar insertion hole matched with the first type of third copper bar is formed by the cooperation of the base body 101, the insulation partition plate 103 and the first wire arrangement cover plate 102, and the third copper bar insertion hole matched with the second type of third copper bar 130 is formed by the cooperation of the base body 101 and the first wire arrangement cover plate 102.

[0113] Specifically, referring to Figure 20 、 22As shown in Figure -25, 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.

[0114] Specifically, such as Figures 13-15 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.

[0115] Specifically, such as Figures 11-13 As shown in Figure 18, 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.

[0116] 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 of the second copper busbar and the first segments 1301 of the third 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.

[0117] 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.

[0118] 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.

[0119] like Figures 1-2 As shown in 11-14 and 18, 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 in 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.

[0120] Specifically, the outlet position 16 and the outlet switch position 13 are arranged side by side along the direction d3, and the outlet position 16 and the electric meter position 11 are located on both sides of the outlet switch position 13 along the direction d3. The external outlet connecting terminal 80 is arranged side by side and spaced along the direction d1. Further, the outlet position 16 is provided with an outlet chamber 18 corresponding to the external outlet connecting terminal 80, and adjacent outlet chambers 18 are separated by an outlet connecting terminal partition plate, and the external outlet connecting terminal 80 is arranged in the corresponding outlet chamber 18. Further, the outlet connecting terminal partition plate and the base 10 are of an integrated structure or a split structure.

[0121] As shown in Figures 4-5 , 13-15, the copper bar circuit structure further comprises a fourth copper bar 140, and the fourth copper bar 140 is arranged one by one corresponding to the second connecting terminal of the outlet switch. One end of the fourth copper bar 140 is used as the second connecting terminal 42 of the outlet side, and the other end is used for cooperating with the corresponding external outlet connecting terminal 80 (for example, the end of the fourth copper bar 140 is directly electrically connected with the external outlet connecting terminal 80 or the two are cooperated to clamp the external conductor of the outlet).

[0122] Specifically, the fourth copper bar 140 comprises a fourth copper bar head section 1401 and a fourth copper bar tail section 1402 connected in sequence, the fourth copper bar head section 1401 is used as the second connecting terminal 42 of the outlet side, and the fourth copper bar tail section 1402 is electrically connected with the corresponding external outlet connecting terminal 80.

[0123] 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.

[0124] 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.

[0125] 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.

[0126] Specifically, the fourth copper busbar hole is formed by the cooperation of the first cable outlet cover plate 1071 and the base body 101.

[0127] like Figures 1-2 As shown in 11-14 and 18, 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 and connect to the incoming line terminal of the incoming line switch 920.

[0128] 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).

[0129] 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.

[0130] 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.

[0131] like Figures 1-3 As shown in Figures 11-15, 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.

[0132] like Figures 1-2 As shown in 11-14 and 18, the mounting position group also includes an inlet position 15 disposed on the base 10, and the inlet position 15 is disposed in a one-to-one correspondence with the inlet switch position 12; the terminal group also includes an inlet connection terminal group disposed in the inlet position 15, the inlet connection terminal group includes an external inlet terminal 70 disposed in a one-to-one correspondence with the first connection terminal of the inlet switch and electrically connected, and each external inlet terminal 70 is arranged side by side at intervals along the direction d1, and each external inlet terminal 70 is also used to connect and electrically connect with the external conductor of the inlet.

[0133] Specifically, in the base unit, the incoming line position 15 and the incoming line switch position 12 are arranged side by side along the direction d3, the incoming line position 15 and the electric meter position 11 are respectively located on the two sides of the incoming line switch position 12 along the direction d3, and the external connection line connection terminals 70 are arranged side by side and spaced apart along the direction d1; the incoming line position 15 and the outgoing line position 16 are arranged in sequence along the direction d1. Further, the incoming line position 15 and the outgoing line position 16 are arranged side by side along the direction d1, or the incoming line position 15 is arranged close to the electric meter position 11 relative to the outgoing line position 16 along the direction d3, or the incoming line position 15 is arranged away from the electric meter position 11 relative to the outgoing line position 16 along the direction d3. Further, the incoming line position 15 is provided with an incoming line chamber 17 corresponding to the external connection incoming line connection terminal 70 one by one, the adjacent incoming line chambers 17 are separated by the incoming line connection terminal partition, and the external connection incoming line connection terminal 70 is located in the corresponding incoming line chamber 17. Further, the incoming line connection terminal partition is of an integral or split structure with the base 10.

[0134] Specifically, the copper bar circuit structure further comprises a first copper bar 110, the first copper bar 110, the external connection incoming line connection terminal 70, and the incoming line switch first connection terminal are one by one corresponding, and each first copper bar 110 has one end as an incoming line side first connection terminal 31 and the other end for cooperating with the corresponding external connection incoming line connection terminal 70 (for example, the end of the first copper bar 110 is directly electrically connected with the external connection incoming line connection terminal 70 or the two cooperate to clamp the incoming line external conductor).

[0135] Specifically, the base 10 further comprises a wire inlet cover plate set 106 stacked with the base body 101 along the direction d2, the wire inlet cover plate set 106, the wire inlet position 15 and the wire inlet switch position 12 are correspondingly arranged; the projection direction of the plug-in base is the orthogonal projection of the direction d2 and the projection direction of the base unit is the orthogonal projection of d2, the wire inlet cover plate set 106 shields the part of the first copper bar 110 except the wire inlet side first connecting terminal 31 and the wire inlet connecting terminal set. Further, the first copper bar 110 comprises a first copper bar head section 1101 and a first copper bar tail section 1102 connected in sequence, the first copper bar head section 1101 serves as the wire inlet side first connecting terminal 31, and the first copper bar tail section 1102 is electrically connected with the corresponding external connection wire inlet terminal 70. Further, the first copper bar head section 1101 extends along the direction d2, and the first copper bar tail section 1102 extends along the direction d3, and the two are connected at right angles. Further, in the base unit, the base body 101, the first wire arrangement cover plate 102 and the wire inlet cover plate set 106 cooperatively enclose a wire inlet switch cavity for the wire inlet switch 920 to be inserted thereinto along the direction d2. Further, the wire inlet cover plate set 106 comprises a wire inlet cover plate set side wall extending along the direction d2, and the wire inlet cover plate set side wall is oppositely arranged with the first wire arrangement cover plate side wall of the first wire arrangement cover plate 102 along the direction d3. Further, the wire inlet cover plate set 106 comprises a first wire inlet cover plate 1061 and a second wire inlet cover plate 1062 arranged in sequence along the direction d3, and the wire inlet switch first connecting terminal (i.e. the first copper bar head section 1101) penetrates through the first wire inlet cover plate 1061 to protrude into the wire inlet switch position 12; the projection direction of the plug-in base is the orthogonal projection of the direction d2 and the projection direction of the base unit is the orthogonal projection of d2, the part of the first copper bar 110 except the wire inlet switch first connecting terminal is shielded by the first wire inlet cover plate 1061, and the external connection wire inlet terminal 70 is shielded by the first wire inlet cover plate 1061 and the second wire inlet cover plate 1062.

[0136] As other embodiments, the plug-in base is not provided with the first copper bar 110, the wire inlet switch first connecting terminal is a structure independent of the first copper bar 110, and the wire inlet switch first connecting terminal corresponding to each other is electrically connected with the external connection wire inlet terminal 70 through a first intermediate wire, and the first intermediate wire is preferably a wire with an insulating skin itself.

[0137] The base 10 is provided with a first copper bar hole (not shown in the figure) corresponding to the first copper bar 110, and the first copper bar 110 is arranged in the corresponding first copper bar hole, which can not only realize the reliable positioning of each first copper bar 110, but also ensure the insulation performance between adjacent first copper bars 110.

[0138] Specifically, the first copper bar hole is formed by the first wire inlet cover plate 1061 and the base body 101.

[0139] AsFigures 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.

[0140] like Figure 3 and 11 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.

[0141] 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.

[0142] 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.

[0143] 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.

[0144] 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.

[0145] like Figures 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.

[0146] 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.

[0147] 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.

[0148] 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. This communication connection terminal is connected to the sampling circuit board 955 of the sampling device 950 and is used to connect to 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.

[0149] The external connection inlet terminal 70 and the external connection outlet terminal 80 may have the same or different structures.

[0150] As Figures 1-2 shown in the first embodiment, the base 10 is further provided with at least one expansion module position 14 for installing an expansion module; the base unit further comprises an expansion module connection terminal group 60 fixedly arranged on the base 10, and each connection terminal of the expansion module connection terminal group 60 is used for plug-in electrical connection with each wiring terminal of the expansion module. Further, when the expansion module needs to take power from the electrical circuit, that is, when the expansion module needs to obtain working power supply from the electrical circuit, the expansion module connection terminal group 60 is electrically connected with 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 plug-in electrical connection with each wiring terminal of the expansion module along the direction d2, that is, during installation, the expansion module is moved along the direction d2 to make the wiring terminals of the expansion module plug-in together with each connection terminal of the expansion module connection terminal group 60. It should be pointed out that the plug-in 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.

[0151] Specifically, the expansion module includes a collector module and / or a communication module and / or a sensor module, etc., each module can be selectively arranged or multiple modules can be simultaneously arranged, and the sensor module can be an expansion module for collecting environmental temperature and humidity or an expansion module for detecting smoke, etc. The number of the expansion module is ≥1, and the number and function of the expansion module can be selected by a person skilled in the art according to actual functional design. When the expansion module is a communication module, it is connected with the sampling circuit board 950 of the sampling device 950 to output the signal collected by the sampling device 950.

[0152] Specifically, one end of each connection terminal of the expansion module connection terminal group 60 protrudes into the expansion module position 14 and is used for plug-in electrical connection with the wiring terminal of the expansion module; that is, each connection terminal of the expansion module connection terminal group 60 is a male head, and each wiring terminal of the expansion module is a female head, and the two are plug-in electrically connected. It should be pointed out that according to actual needs, each connection terminal of the expansion module connection terminal group 60 is arranged as a female head, and each wiring terminal of the expansion module is arranged as a male head. Further, when the expansion module needs to take power from the electrical circuit, the expansion module connection terminal group 60 can be electrically connected with the incoming line connection terminal group or the incoming line switch connection terminal group through a copper bar or other types of wires (such as flexible connection), etc.

[0153] Specifically, in the base unit, the expansion module position 14, the incoming line switch position 12, and the outgoing line switch position 13 are arranged side by side along the direction d1 in sequence. It should be noted that the setting position of the expansion module position 14 is not limited to the above-mentioned one, and the person skilled in the art can adjust the position of the expansion module position 14 according to the needs, for example, the expansion module position 14 is arranged side by side with the electric meter position 11 along the direction d1, or the expansion module position 14 is located between the electric meter position 11 and the outgoing line switch position 13, or the expansion module position 14 is located between the electric meter position 11 and the incoming line switch position 12, or the expansion module position 14 is arranged side by side with the incoming line position 15 or the outgoing line position 16 along the direction d1, or the expansion module 14 is located between the incoming line position 15 and the outgoing line position 16 along the direction d1.

[0154] As shown in Figures 1-2 , in the plug-in base of the first embodiment, the base unit further comprises an electric meter in-place detection mechanism 91 arranged on the base 10 and used for detecting whether the electric energy meter 910 is installed in place in the electric meter position 11. Further, the electric meter in-place detection mechanism 91 is connected with the control module 940 (for example, connected with the control circuit board 942 of the control module 940), and the electric meter in-place detection mechanism 91 sends a first control signal to the control module 940 when detecting that the electric energy meter 910 is not installed in place, and the control module 940 controls the outgoing line switch 930 to be tripped; and / or, the electric meter in-place detection mechanism 91 sends an alarm signal when detecting that the electric energy meter 910 is not installed in place.

[0155] As shown in Figures 1-2 , in the plug-in base of the first embodiment, the base unit further comprises an incoming line switch in-place detection mechanism 92 arranged on the base 10 and used for detecting whether the incoming line switch 920 is installed in place in the incoming line switch position 12. Further, the incoming line switch in-place detection mechanism 92 is connected with the control module 940 (for example, connected with the control circuit board 942 of the control module 940), and the incoming line switch in-place detection mechanism 92 sends a second control signal to the control module 940 when detecting that the incoming line switch 920 is not installed in place, and the control module 940 controls the outgoing line switch 930 to be tripped; and / or, the incoming line switch in-place detection mechanism 92 sends an alarm signal when detecting that the incoming line switch 920 is not installed in place.

[0156] As shown in Figures 1-2As shown, in the plug-in base of the first embodiment, the base unit further comprises an outlet switch to position detection mechanism 93 arranged on the base 10 and used for detecting whether the outlet switch 930 is installed into the outlet switch position 13 or not. Further, the outlet switch to position detection mechanism 93 is connected with the control module 940 (for example, connected with the control circuit board 942 of the control module 940), and the outlet switch to position detection mechanism 93 sends a third control signal to the control module 940 when detecting that the outlet switch 930 is not installed into position, and the control module 940 controls the outlet switch 930 to be tripped; and / or, the outlet switch to position detection mechanism 93 sends an alarm signal when detecting that the outlet switch 930 is not installed into position.

[0157] The base unit is provided with at least one of the electric meter to position detection mechanism 91, the incoming switch to position detection mechanism 92 and the outlet switch to position detection mechanism 93, that is, the electric meter to position detection mechanism 91, the incoming switch to position detection mechanism 92 and the outlet switch to position detection mechanism 93 can be selectively arranged, or any two of them can be arranged, or all of them can be arranged. It should be pointed out that the specific implementation methods of the electric meter to position detection mechanism 91, the incoming switch to position detection mechanism 92 and the outlet switch to position detection mechanism 93 sending an alarm signal and driving the outlet switch 930 to be tripped by the control module 940 can be realized by conventional technical means in the art, and will not be described here.

[0158] If the electric energy meter 910 and / or the incoming switch 920 and / or the outlet switch 930 is installed into the electric meter position 11 and / or the incoming switch position 920 and / or the outlet switch position 13 but not installed into position, the electric energy meter 910 and / or the incoming switch 920 and / or the outlet switch 930 has been connected to the circuit but the corresponding connection terminals and wiring terminals are in a virtual connection state, and long-term operation may, at the least, cause the corresponding connection terminals and wiring terminals to be damaged due to overheating, and at the most, may cause a fire; the plug-in base of the first embodiment can detect whether the electric energy meter 910 and / or the incoming switch 920 and / or the outlet switch 930 is installed into position, so as to ensure that each electric energy meter 910 and / or the incoming switch 920 and / or the outlet switch 930 is installed into position before being put into use, thereby improving the safety and reliability.

[0159] Specifically, the ammeter in-place detection mechanism 91, the incoming line switch in-place detection mechanism 92 and the outgoing line switch in-place detection mechanism 93 can be implemented by the prior art; for example, each detection mechanism can be implemented by a micro switch, when the electric energy meter 910, the incoming line switch 920 and the outgoing line switch 930 are respectively installed in place, the corresponding micro switch is triggered to switch the working state - for example, switching between the on state and the off state or switching between different on states; alternatively, each detection mechanism includes a position sensor (for example, an optical position sensor), and the electric energy meter 910, the incoming line switch 920 and the outgoing line switch 930 are respectively detected by the corresponding position sensor whether they are installed in place.

[0160] Specifically, when the electric energy meter in-place detection mechanism 91 detects that the electric energy meter 910 is not installed in place, an alarm signal is sent out through the electric energy meter 910 and / or an alarm signal is sent out to the background control system through the expansion module with communication function; when the incoming line switch in-place detection mechanism 92 detects that the incoming line switch 920 is not installed in place, an alarm signal is sent out through the electric energy meter 910 and / or an alarm signal is sent out to the background control system through the expansion module with communication function; when the outgoing line switch in-place detection mechanism 93 detects that the outgoing line switch 930 is not installed in place, an alarm signal is sent out through the electric energy meter 910 and / or an alarm signal is sent out to the background control system through the expansion module with communication function.

[0161] As Figures 29-30As 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.

[0162] 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.

[0163] like Figures 29-30 The diagram shows a first embodiment of the cooperation between the short-circuiting device and the meter inlet terminal group 20:

[0164] 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.

[0165] One implementation of the shorting piece 962 is that the shorting piece 962 is a one-piece metal piece, which is bent from a metal conductive plate or a columnar metal conductor.

[0166] Another implementation of the shorting piece 962 is that the first shorting part 963 and the second shorting part 964 are connected together by a segment of conductive wire, and the two ends of the conductive wire are respectively welded to or connected by a fastener to the first shorting part 963 and the second shorting part 964, and the fastener is a screw, a bolt, or a rivet, etc.

[0167] The following is a second embodiment of the cooperation mode of the shorting device and the meter connection terminal group 20:

[0168] The shorting piece 962 is arranged in the shorting device shell 961, which is provided with a first shell hole corresponding to the first shorting part 963 and a second shell hole corresponding to the second shorting part 964; the meter incoming line connection terminal 21 includes an incoming line terminal shorting part protruding through the corresponding first shorting hole 1091 and an outgoing line terminal shorting part protruding through the corresponding second shorting hole 1092, the incoming line terminal shorting part is used to contact and electrically connect with the corresponding first shorting part 963 through the corresponding first shell hole, and the outgoing line terminal shorting part is used to contact and electrically connect with the corresponding second shorting part 964 through the corresponding second shell hole. Further, the first shorting part 963 is a female type plug-in terminal, the incoming line terminal shorting part is a male type plug-in terminal, and the corresponding first shorting part 963 and the incoming line terminal shorting part are plug-in electrically connected with each other; the second shorting part 964 is a female type plug-in terminal, and the outgoing line terminal shorting part is a male type plug-in terminal, and the corresponding second shorting part 964 and the outgoing line terminal shorting part are plug-in electrically connected with each other.

[0169] In the shorting device 960, the shorting device shell 961 further includes a detection hole corresponding to each shorting piece 962, which is used for inserting a test pen to detect whether the shorting piece is live, so as to prevent the corresponding meter incoming line connection terminal 21 and meter outgoing line connection terminal 22 from being shorted by the shorting piece 962, causing power failure when the electric energy meter 910 is disassembled.

[0170] One implementation of the shorting device shell 961 is that the shorting device shell 961 is an injection molding structure, and part of each shorting piece 962 is injection molded in the shorting device shell 961, and the corresponding detection hole is formed during the injection molding process.

[0171] Another implementation of the shorting device shell 961 is that the shorting device shell 961 includes two half shells that are relatively combined together, and the first shorting part 963 and the second shorting part 964 are respectively clamped by the two half shells.

[0172] In the plug-in base of the first embodiment, when the short-circuit device 960 is in the short-circuit position, the short-circuit device shell 961 is limitedly matched with the corresponding base 10, so as to keep the short-circuit device 960 in the short-circuit position, thereby facilitating the operator to perform other operations, such as the operation of dismounting or mounting the electric energy meter 910 and the like.

[0173] As shown in Figures 7-10 and referring to Figures 1-2 , 11-15, 18, it is the second embodiment of the plug-in base of the utility model.

[0174] As shown in Figures 7-10 , the plug-in base of the second embodiment is mainly different from the plug-in base of the first embodiment in the implementation manner of the sampling device 950 and the outlet switch connection terminal group: the sampling device 950 is a module arranged independently of the base 10, which comprises a sampling device shell 958, a sampling device wiring structure, a sampling line board 955 arranged in the sampling device shell 958, and a sampling element connected with the sampling line board 955; the sampling device wiring structure comprises 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 comprises a first front connection terminal, and the first rear connection terminal group 953 comprises a first rear connection terminal arranged in one-to-one correspondence with the first front connection terminal and connected in series; the second front connection terminal group 952 comprises a second front connection terminal, and the second rear connection terminal group 954 comprises a second rear connection terminal arranged in one-to-one correspondence with the second front connection terminal and connected in series; 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. Further, the first front connection terminal group 951 and the second front connection terminal group 952 serve as the outlet switch connection terminal group, each connection terminal of the first front connection terminal group 951 is used for one-to-one plug-in electrical connection with each outlet wiring terminal of the outlet 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 outlet wiring terminal of the outlet switch 930, each connection terminal of the first rear connection terminal group 953 is one-to-one plug-in electrical connection with each outlet side first connection terminal 41, and each connection terminal of the second rear connection terminal group 954 is one-to-one plug-in electrical connection with each outlet side second connection terminal 42; that is, the first front connection terminal serves as the outlet switch first connection terminal, the first rear connection terminal is plug-in electrical connection with the outlet side first connection terminal 41, the second front connection terminal serves as the outlet switch second connection terminal, and the second rear connection terminal is plug-in electrical connection with the outlet side second connection terminal 42.

[0175] The sampling device 950 is arranged as a separate module, facilitating arrangement and disassembly, and the first front connecting terminal, the first rear connecting terminal, the second front connecting terminal and the second rear connecting terminal are all plug-in type connecting terminals, facilitating quick wiring. It should be noted that the modular design of the sampling device 950 can not only be applied to the metering box, but also can be applied to other application scenarios, such as control cabinets, power distribution cabinets, etc.

[0176] As shown in Figure 8 and 10 , the first front connecting terminal group 951 and the second front connecting terminal group 952 are located at one end of the sampling device 950 in the direction d2, and the first rear connecting terminal group 953 and the second rear connecting terminal group 954 are located at the other end of the sampling device 950 in the direction d2; the first front connecting terminal group 951 and the first rear connecting terminal group 953 are arranged in sequence along the direction d1, and the second front connecting terminal group 952 and the second rear connecting terminal group 954 are arranged in sequence along the direction d1; the first terminal group 951 and the second front connecting terminal group 952 are arranged side by side and spaced apart along the direction d3, and the first rear connecting terminal group 953 and the second rear connecting terminal group 954 are arranged side by side and spaced apart along the direction d3. Further, the number of first front connecting terminals is ≥2, and each first front connecting terminal is arranged side by side and spaced apart along the direction d1; the number of first rear connecting terminals is ≥2, and each first rear connecting terminal is arranged side by side and spaced apart along the direction d1; the number of second front connecting terminals is ≥2, and each second front connecting terminal is arranged side by side and spaced apart along the direction d1; the number of second rear connecting terminals is ≥2, and each second rear connecting terminal is arranged side by side and spaced apart along the direction d1; the first front connecting terminal, the first rear connecting terminal, the second front connecting terminal and the second rear connecting terminal are all respectively plug-in electrically connected with the corresponding external connecting terminal (that is, the incoming line connecting terminal of the outgoing line switch 930, the incoming line side first connecting terminal 41, the outgoing line connecting terminal of the outgoing line switch 930, the outgoing line side second connecting terminal 42) along the direction d2.

[0177] Specifically, the first front connection terminal and the second front connection terminal are both male, that is, when the sampling device 950 is connected to the electric circuit, the first front connection terminal and the second front connection terminal are respectively plugged and electrically connected with the corresponding connection terminals (i.e. the incoming line connection terminal and the outgoing line connection terminal of the outgoing line switch 930) other than the sampling device 950 as male, and one end of the first front connection terminal and the second front connection terminal protrudes outside the sampling device shell 958 by penetrating the sampling device shell 958; the first rear connection terminal and the second rear connection terminal are both female, that is, when the sampling device 950 is connected to the electric circuit, the first rear connection terminal and the second rear connection terminal are respectively plugged and electrically connected with the corresponding connection terminals (i.e. the incoming line side connection terminal 41 and the outgoing line side connection terminal 42) other than the sampling device 950 as female, and the sampling device shell 958 is provided with a jack hole matched with the first rear connection terminal and the second rear connection terminal. It should be pointed out that according to actual needs, the first front connection terminal and the second front connection terminal can be changed to female plug-in connection terminals, and the first rear connection terminal and the second rear connection terminal can be changed to male plug-in connection terminals.

[0178] As shown in Figure 8 and 10 , the plane on which the sampling circuit board 955 is located is perpendicular to the direction d2; in the 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.

[0179] As shown in Figure 8 and 10 , each of the current sampling elements 956 is coupled with the sampling device connection structure. Further, the current sampling elements 956 are arranged in the sampling device shell 958.

[0180] As shown in Figure 8 and 10 , each of the voltage transformers is coupled with the sampling device connection structure. Further, the voltage transformers are arranged in the sampling device 950.

[0181] As shown in Figure 8 and 10 , the residual current transformer 957 is coupled with the sampling device connection structure. Further, the residual current transformer 957 is arranged in the sampling device shell 958.

[0182] As other embodiments, the residual current transformer 957 is coupled with each outgoing line side second connection terminal 42, or the residual current transformer 957 is coupled with each outgoing line side first connection terminal 41. Further, the residual current transformer 957 is arranged in the base 10.

[0183] As Figure 8 and 10 shown, the first front connecting terminal and the corresponding first rear connecting terminal are connected in series by a first connecting conductor; the second front connecting terminal and the corresponding second rear connecting terminal are connected in series by a second connecting conductor.

[0184] Further, when the sampling element comprises a current sampling piece 956, the current sampling piece 956 is a Rogowski coil current transformer, and each current sampling piece 956 is sleeved on the corresponding first connecting conductor.

[0185] Further, when the sampling element comprises a residual current transformer 957, each second connecting conductor passes through the middle of the residual current transformer 957.

[0186] It should be pointed out that the setting positions of the current sampling piece 956 and the residual current transformer 957 are not limited to the above-mentioned manners, and the setting manners of the two can also be changed to: the current sampling piece 956 is sleeved on the corresponding second connecting conductor, and each first connecting conductor passes through the middle of the residual current transformer 957; or the current sampling piece 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.

[0187] Specifically, the first connecting conductor is composed of a first conductor front segment and a first conductor rear segment connected to each other independently, one end of the first conductor front segment is connected to the corresponding first front terminal and the other end is connected to one end of the first conductor rear segment, and the other end of the first conductor rear segment is connected to the corresponding first rear terminal; the first conductor front segment comprises a front segment first plate and a front segment second plate connected by bending, one end of the front segment first plate is connected to one end of the corresponding first front connecting terminal by bending, and the other end of the front segment first plate is connected to one end of the front segment second plate by bending; the first conductor rear segment comprises a rear segment first plate, a rear segment second plate and a rear segment third plate connected in sequence by bending, one end of the rear segment first plate is connected to the other end of the front segment second plate, the other end of the rear segment first plate is connected to one end of the rear segment second plate by bending, the other end of the rear segment second plate is connected to one end of the rear segment third plate by bending, and the other end of the rear segment third plate is connected to the corresponding second rear connecting terminal; the front segment second plate is used for sleeving the current sampling piece 956 thereon, the front segment second plate and the rear segment third plate are opposite along the direction d3 and limit the current sampling piece 956 from the axial direction, and the front segment first plate and the rear segment second plate are opposite along the direction d2 and limit the current sampling piece 956 from the radial direction. The specific structure of the first connecting conductor not only facilitates the installation of the current sampling piece 956, but also realizes reliable limiting of the position of the current sampling piece 956. Further, the first conductor front segment and the corresponding first front connecting terminal are of an integral structure, for example, the first conductor front segment and the first front connecting terminal are cut and bent from a metal plate.

[0188] Specifically, the second connecting conductor and the corresponding second front connecting terminal are in an integrated structure, for example, the second connecting conductor and the second front connecting terminal are cut and bent from a metal plate.

[0189] As other embodiments of the first connecting conductor, the first connecting conductor is a soft conductor or a hard conductor. Further, the first connecting conductor is provided with an insulating outer skin.

[0190] As other embodiments of the second connecting conductor, the second connecting conductor is a soft conductor or a hard conductor. Further, the second connecting conductor is provided with an insulating outer skin.

[0191] As shown in FIG. 9, in the plug-in base of the second embodiment, the sampling circuit board 955 is electrically connected with the sampling device wiring structure, and the sampling circuit board 955 is also used to output power supply to the outside. Further, the sampling device 950 further comprises a power supply output terminal, and the power supply output terminal is electrically connected with the sampling device wiring structure through the sampling circuit board 955. Further, the sampling device shell 958 is provided with a power supply output hole, and the power supply output terminal is arranged in the power supply output hole, and the power supply output terminal is preferably a plug-in type connecting terminal. Figure 8 Specifically, the control circuit board 942 of the control module 940 is electrically connected with the sampling circuit board 955 to obtain working power supply and / or sampling signals obtained by the sampling device. When the control module 940 obtains working power supply through the sampling circuit board 955, the plug-in base of the second embodiment does not arrange the control module connecting terminal group 50.

[0192] As other embodiments, when the plug-in base of the second embodiment comprises the current sampling piece 956, the current sampling piece 956 is a manganese copper shunt which is connected in series with the first connecting conductor or the second connecting conductor.

[0193] In actual use, the plug-in base of the second embodiment preferably assembles the sampling device 950 and the corresponding outlet switch 930 together, and then the whole is assembled into the corresponding outlet switch position 13, the first rear connecting terminal is plug-in electrically connected with the corresponding outlet side first connecting terminal 41, and the second rear connecting terminal is plug-in electrically connected with the corresponding outlet side second connecting terminal 42.

[0194] The following is a third embodiment of the plug-in base of the utility model, which is different from the plug-in base of the first embodiment in that the base unit of the plug-in base of the third embodiment does not arrange the sampling device 950. Further, the sampling device 950 and the outlet switch 930 are integrated together.

[0195] The following is a fourth embodiment of the plug-in base of the utility model, which is different from the plug-in base of the first embodiment in that, as shown in FIG. 10, the plug-in base of the fourth embodiment does not arrange the sampling device 950.

[0196] Figure 27 ​As shown in the figure: the base 10 is not provided with the incoming line switch position 12, the incoming line switch first connecting terminal, the incoming line position 15, the incoming line connecting terminal group, and the incoming line cover plate group 106; the base 10 comprises an incoming line switch avoiding gap 9211 for avoiding the incoming line switch 920 and being provided in one-to-one correspondence with the outgoing line switch position 13; and the incoming line switch second connecting terminal is located in the corresponding incoming line switch avoiding gap 9211.

[0197] Further, the outgoing line switch position 13 and the incoming line switch avoiding gap 9211 corresponding to each other are arranged side by side along the direction d1, and the outgoing line switch position 13 and the incoming line switch avoiding gap 9211 corresponding to each other are arranged side by side along the direction d3 and the corresponding ammeter position 11.

[0198] The incoming line switch second connecting terminal is plug-in electrically connected with the outgoing line connecting terminal of the incoming line switch 920 along the direction d2 or the direction d3. In the plug-in base of the fourth embodiment, the incoming line switch second connecting terminal is preferably plug-in electrically connected with the outgoing line connecting terminal of the incoming line switch 920 along the direction d3.

[0199] The following is the fifth embodiment of the plug-in base of the utility model, which is different from the plug-in base of the second embodiment in that: Figure 27 As shown in the figure: the base 10 is not provided with the incoming line switch position 12, the incoming line switch first connecting terminal, the incoming line position 15, the incoming line connecting terminal group, and the incoming line cover plate group 106; the base 10 comprises an incoming line switch avoiding gap 9211 for avoiding the incoming line switch 920 and being provided in one-to-one correspondence with the outgoing line switch position 13; and the incoming line switch second connecting terminal is located in the corresponding incoming line switch avoiding gap 9211.

[0200] Further, the outgoing line switch position 13 and the incoming line switch avoiding gap 9211 corresponding to each other are arranged side by side along the direction d1, and the outgoing line switch position 13 and the incoming line switch avoiding gap 9211 corresponding to each other are arranged side by side along the direction d3 and the corresponding ammeter position 11.

[0201] The incoming line switch second connecting terminal is plug-in electrically connected with the outgoing line connecting terminal of the incoming line switch 920 along the direction d2 or the direction d3. In the plug-in base of the fourth embodiment, the incoming line switch second connecting terminal is preferably plug-in electrically connected with the outgoing line connecting terminal of the incoming line switch 920 along the direction d3.

[0202] As shown in the figure: Figure 28As shown in

[0203] As shown in Figures 25-26 As shown in

[0204] The number of the base units of the base unit group in the plug-in base of the seventh embodiment is n≥2, the base units are the same in structure and are arranged in parallel and at intervals along the direction d1, the base units are the same in structure with the base units of the first embodiment, the second embodiment or the third embodiment, and the base body 101 of the base 10 of each base unit is of an integral structure.

[0205] As shown in

[0206] The number of the base units of the base unit group in the plug-in base of the eighth embodiment is n≥2, the base units are the same in structure and are arranged in parallel and at intervals along the direction d1, the base units are the same in structure with the base units of the fourth embodiment, the fifth embodiment or the sixth embodiment, and the base body 101 of the base 10 of each base unit is of an integral structure.

[0207] As shown in Figures 16-17 As shown in

[0208] As shown in Figures 16-17 The number of the base units of the base unit group in the plug-in base of the ninth embodiment is n≥2.

[0209] The base unit group comprises the wire inlet position 15 arranged on the base 10 of one base unit, instead of arranging the wire inlet position 15 on the base 10 of each base unit, the base 10 where the wire inlet position 15 is arranged is the first base, the base 10 provided with the wire inlet position 15 is the first base, the base unit corresponding to the first base is the first base unit, and the wire inlet terminal group arranged in the wire inlet position 15 is the total wire inlet terminal group; the wire inlet switch connection terminal group of each base unit is electrically connected with the wire inlet terminal group in the wire inlet position 15, that is, the wire inlet switch connection terminal group of each base unit is electrically connected with the total wire inlet terminal group in a parallel mode, and each connection terminal of each wire inlet switch connection terminal group is electrically connected with each connection terminal of the total wire inlet terminal group.

[0210] In the plug-in base of the ninth embodiment, each base unit of the same base unit group shares the incoming line position 15 and the incoming line connection terminal group, which is conducive to simplifying the structure and reducing the number of components, and further simplifies the wiring operation.

[0211] As shown in Figure 16 , 19 As shown in 20, 22-23, 25, in the first base, the incoming line position 15 is arranged side by side with the incoming line switch position 12 in the direction d3 and sequentially arranged with the outgoing line switch position 13 along the direction d1, and the incoming line position 15 and the ammeter position 11 are respectively located on both sides of the incoming line switch position 12 in the direction d3.

[0212] As shown in Figures 16-17 , 19-20, 22, 24, the base unit group further includes a fifth copper bar 150, the number of the fifth copper bar 150 is the same as the number of phases of the electrical circuit and the number of external incoming line connection terminals 70, each fifth copper bar 150 includes a fifth copper bar plug-in section 1501, a fifth copper bar middle section 1502 and a fifth copper bar matching section 1503, one end of the fifth copper bar plug-in section 1501 and the fifth copper bar matching section 1503 is connected with the fifth copper bar middle section 1502, the fifth copper bar plug-in section 1501 serves as the first connection terminal of the incoming line switch, and the number of the fifth copper bar plug-in section 1501 of each fifth copper bar 150 is the same as the number of the incoming line switch connection terminal group (i.e. the same as the number of base units), and the fifth copper bar matching section 1503 is electrically connected with the corresponding external incoming line connection terminal 70 and their number is the same. Further, the first base further includes an incoming line cover plate group 106 arranged in a stack along the direction d2 with the corresponding base body 101; on the orthogonal projection of the direction d2 of the projection direction of the base unit group, the incoming line cover plate group 106 blocks the corresponding fifth copper bar matching end 1503 and the corresponding incoming line connection terminal group; the base unit group further includes an intermediate wire arrangement plate group 108 arranged in a stack along the direction d2 with each base body 101 and fixedly matched with the base body 101; on the orthogonal projection of the direction d2 of the projection direction of the base unit group, the fifth copper bar middle section is blocked by the intermediate wire arrangement plate group 108.

[0213] The base unit group is provided with a fifth copper bar hole (not shown in the figure) corresponding to the fifth copper bar 150, and the fifth copper bar middle section 1502 of the fifth copper bar 150 is arranged in the corresponding fifth copper bar hole, which not only realizes the reliable positioning of each fifth copper bar, but also ensures the insulation performance between each fifth copper bar. Further, the fifth copper bar hole is formed by each base 10 and the intermediate wire arrangement plate group 108.

[0214] Specifically, as shown in Figures 19-20, 22, 24, the electric circuit is a two-phase electric circuit; in the base unit, the incoming line switch position 12 is arranged close to the electric meter position 11 relative to the outgoing line switch position 13 in the direction d3; the fifth copper bar middle section 1502 passes through the outgoing line switch position 13 between adjacent incoming line switches 12 and also passes through between the outgoing line side first connecting terminal 41 and the outgoing line side second connecting terminal 42 between adjacent incoming line switches 12; in the projection direction of the plug-in base on the orthogonal projection of the direction d2 and the projection direction of the base unit group on the orthogonal projection of the direction d2, the fifth copper bar middle section 1502 is shielded by the middle wire arrangement plate group 108, and the external connection incoming line connecting terminal 70 is shielded by the corresponding incoming line cover plate group 106; in the base unit group, the base main body 101, the middle wire arrangement plate group 108, and the first wire arrangement cover plate 102 cooperatively enclose an incoming line switch cavity for the incoming line switch 920 to be inserted thereinto in the direction d2. Further, the number n of the base units is 2, one being a first base unit and the other being a second base unit; the incoming line switch position 12 of the first base unit, the outgoing line switch position 13 of the first base unit, the incoming line switch position of the second base unit, and the outgoing line switch position of the second base unit are sequentially arranged in the direction d1; the incoming line position 15 is arranged close to the electric meter position 11 relative to the outgoing line position 16 in the direction d3; in the projection direction of each base unit on the orthogonal projection of the direction d1, the incoming line switch first connecting terminal, the outgoing line switch first connecting terminal, the incoming line switch second connecting terminal, and the outgoing line switch second connecting terminal are sequentially and side-by-side arranged in the direction d3 and sequentially away from the electric meter position 11 in the direction d3; the middle wire arrangement plate group 108 includes a second wire arrangement cover plate 104 arranged in the direction d2 in layers with each base main body 101; in the projection direction of the plug-in base on the orthogonal projection of the direction d2 and the projection direction of the base unit group on the orthogonal projection of the direction d2, the fifth copper bar middle section 1502 is shielded by the second wire arrangement cover plate 104; in the base unit group, the second wire arrangement cover plate 104, the first wire arrangement cover plate 102, and the base main body 101 cooperatively enclose an incoming line switch cavity for each incoming line switch 920 to be inserted thereinto in the direction d2. Further, the middle wire arrangement plate group 108 further includes a third wire arrangement cover plate 105; each fifth copper bar middle section 1502 is sequentially and side-by-side arranged in the direction d3 between the outgoing line switch first connecting terminal and the outgoing line switch second connecting terminal of the first base unit; the third wire arrangement cover plate 105 is located between the second wire arrangement cover plate 104 and the corresponding first base in the direction d2; in the direction d3, the fifth copper bar middle section 1502 closest to the outgoing line switch first connecting terminal of the first base unit is the uppermost middle section; the third wire arrangement cover plate 105 is arranged on the uppermost middle section to separate the uppermost middle section from the outgoing line switch first connecting terminal of the first base unit. Further, the fifth copper bar 150 is of an integrated structure.

[0215] Specifically, as Figures 16-17As shown, the electric circuit is a four-phase electric circuit; in the base unit, the incoming line switch positions 12 and the outgoing line switch positions 13 are arranged side by side; in the direction d3, the fifth copper bar middle section 1502 passes from one side of the outgoing line switch position 13 between the adjacent two incoming line switch positions 12, and the other side of the outgoing line switch position 13 between the adjacent two incoming line switch positions 12 is provided with the electric meter position 11; in the projection direction d2 of the plug-in base, the fifth copper bar middle section 1502 is blocked by the middle wire arrangement plate group 108. Further, the outgoing line positions 16 of each base unit are arranged side by side along the direction d3; the outgoing line switch position 13 between the adjacent two incoming line switch positions 12 is the adjacent outgoing line switch position, and the outgoing line position 16 corresponding to the adjacent outgoing line switch position and the fifth copper bar middle section 1502 are respectively located on both sides of the middle wire arrangement plate group 108 in the direction d2; the incoming line position 15 is arranged away from the electric meter position 11 relative to the outgoing line position 16 in the direction d3. Further, the number n of the base units is 2, one is the first base unit and the other is the second base unit; the outgoing line switch position 13 of the first base unit, the incoming line switch position 12 of the first base unit, the outgoing line switch position 13 of the second base unit and the incoming line switch position of the second base unit are arranged side by side along the direction d1 in turn, the outgoing line position 16 of the first base unit and the outgoing line position 16 of the second base unit are arranged side by side along the direction d1, the incoming line position 15 is located between the outgoing line position 16 of the first base unit and the outgoing line position 16 of the second base unit in the direction d1, and the incoming line position 15 is arranged away from the electric meter position 11 relative to the outgoing line position 16 in the direction d3; the fifth copper bar middle section 1502 includes a middle section first part, a middle section second part and a middle section third part, the middle section first part extends along the direction d1, the middle section second part extends along the direction d1, the middle section third part extends along the direction d3, one end of the middle section first part is connected with the corresponding incoming line side first connection terminal 31 of the second base unit and the other end is connected with one end of the middle section second part, the other end of the middle section second part is connected with the middle part of the middle section third part, one end of the middle section third part is connected with the corresponding first connection terminal 31 of the first base unit and the other end is electrically connected with the corresponding external incoming line connection terminal 70; in the orthogonal projection direction d1 of the base unit group, each middle section first part is arranged side by side and spaced apart along the direction d1, each middle section second part is arranged side by side and spaced apart along the direction d1, and each middle section third part is arranged side by side and spaced apart along the direction d1. Further, in the fifth copper bar middle section 1502, the middle section first part is connected perpendicularly with the middle section second part, and the middle section second part is connected perpendicularly with the middle section third part; each middle section second part and the fourth copper bar 140 of the second base unit are arranged side by side and spaced apart along the direction d2; each fifth copper bar middle section 1502 is located on the same side of the incoming line switch position 12 and the outgoing line switch position of each base unit in the direction d3.

[0216] It should be noted that in the description of the present application, the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings or the orientation or positional relationship commonly used in use, and are only for the convenience of description, and do not indicate that the device or element referred to must have a particular orientation, so it cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" and the like are only used for differentiation in description, and cannot be understood as indicating relative importance.

[0217] The above is a further detailed description of the present application in combination with specific preferred embodiments, and the specific implementation of the present application cannot be limited to these descriptions. For ordinary skilled persons in the technical field to which the present application belongs, without departing from the concept of the present application, a number of simple deductions or substitutions can be made, which should be considered as falling within the scope of protection of the present application.

Claims

1. A plug-in base, n base units of which and n > 1, the base units comprising a base (10) and a terminal group; the base (10) comprising a mounting site group provided thereon, the mounting site group comprising a meter site (11) for mounting an electric energy meter (910) and an outgoing line switch site (13) for mounting an outgoing line switch (930); the terminal group comprising a meter connection terminal set (20) at the meter site (11) and an outgoing line switch connection terminal set at the outgoing line switch site (13), the meter connection terminal set (20) comprising meter outgoing line connection terminals (22) for one-to-one plug-in electrical connection with outgoing line terminals of the electric energy meter (910), the meter connection terminal set (20) and the outgoing line switch connection terminal set being sequentially connected in series in the same electric circuit; characterized in that the meter outgoing line connection terminals (22) being used for plug-in electrical connection with the respective outgoing line terminals of the electric energy meter (910) along a direction d2 or a direction d3; the respective connection terminals of the outgoing line switch connection terminal set being used for plug-in electrical connection with the respective terminals of the outgoing line switch (930) along the direction d2; the outgoing line switch connection terminal set also being used for electrical connection with an outgoing line external conductor; the direction d2 and the direction d3 being perpendicular to each other.

2. The plug base of claim 1, wherein: the meter connection terminal set (20) further comprising meter incoming line connection terminals (21) for one-to-one plug-in electrical connection with incoming line terminals of the electric energy meter (910), the meter incoming line connection terminals (21) being provided in one-to-one correspondence with the meter outgoing line connection terminals (22) and also being used for electrical connection with an incoming line external conductor; the respective connection terminals of the meter connection terminal set (20) being used for plug-in electrical connection with the respective terminals of the electric energy meter (910) along the direction d2 or the direction d3.

3. The plug base of claim 2, wherein: the terminal group further comprising an incoming line switch connection terminal set, the incoming line switch connection terminal set, the meter connection terminal set (20) and the outgoing line switch connection terminal set being sequentially connected in series in the electric circuit, the incoming line switch connection terminal set comprising incoming line switch second connection terminals, the respective incoming line switch second connection terminals being used for plug-in electrical connection with the respective incoming line terminals of the incoming line switch (920) along the direction d2 or the direction d3.

4. The plug base of claim 3, wherein: the respective incoming line switch second connection terminals being used for plug-in electrical connection with the respective incoming line terminals of the incoming line switch (920) along the direction d2.

5. The plug base of claim 3, wherein: the incoming line switch connection terminal set and the outgoing line switch connection terminal set being sequentially provided along a direction d1 and located on the same side of the meter site (11) in the direction d3, the direction d1, the direction d2 and the direction d3 being perpendicular to each other.

6. The plug base of claim 4, wherein: the mounting site group further comprising an incoming line switch site (12) for mounting the incoming line switch (920), the incoming line switch site (12) and the outgoing line switch site (13) being sequentially provided along the direction d1, the incoming line switch site (12) and the outgoing line switch site (13) being located on the same side of the meter site (11) in the direction d3.

7. The plug base of claim 6, wherein: The incoming line switch connection terminal group further comprises an incoming line switch first connection terminal corresponding to each incoming line switch second connection terminal, each incoming line switch second connection terminal being used for plug-in electrical connection with each outgoing line terminal of the incoming line switch (920) along the direction d2, and each incoming line switch first connection terminal being used for plug-in electrical connection with the incoming line terminal of the incoming line switch (920) along the direction d2; In the base unit, each incoming line switch second connection terminal is arranged in sequence and in parallel along the direction d1, each incoming line switch first connection terminal is arranged in sequence and in parallel along the direction d1, and the corresponding incoming line switch first connection terminal and the incoming line switch second connection terminal are arranged in parallel along the direction d3, and the incoming line switch second connection terminal is arranged close to the ammeter position (11) relative to the incoming line switch first connection terminal.

8. The plug base of claim 3, wherein: The base (10) further comprises an incoming line switch avoiding notch (9211) for avoiding the incoming line switch (920), the incoming line switch avoiding notch (9211) and the outgoing line switch position (13) are arranged in sequence along the direction d1, and the incoming line switch avoiding notch (9211) and the outgoing line switch position (13) are located on the same side of the ammeter position (11); the incoming line switch second connection terminal is located in the incoming line switch avoiding notch (9211).

9. The plug base of claim 1, wherein: The base (10) further comprises an incoming line switch avoiding notch (9211) for avoiding the incoming line switch (920).

10. The plug base of claim 2, wherein: Each connection terminal of the ammeter connection terminal group (20) is arranged in sequence and in parallel along the direction d1, and the ammeter incoming line connection terminal (21) and the ammeter outgoing line connection terminal (22) are arranged in sequence and in parallel alternately along the direction d1; The outgoing line switch connection terminal group comprises an outgoing line switch first connection terminal and an outgoing line switch second connection terminal; in the base unit, each outgoing line switch first connection terminal is arranged in sequence and in parallel along the direction d1 and is used for plug-in electrical connection with each incoming line terminal of the outgoing line switch (930), each outgoing line switch second connection terminal is arranged in sequence and in parallel along the direction d1 and is used for plug-in electrical connection with each outgoing line terminal of the outgoing line switch (930), the outgoing line switch first connection terminal and the outgoing line switch second connection terminal are arranged in one-to-one correspondence, the corresponding outgoing line switch first connection terminal and the outgoing line switch second connection terminal are arranged in parallel along the direction d3, and the outgoing line switch first connection terminal is arranged close to the ammeter position (11) relative to the outgoing line switch second connection terminal.

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