Plug-in base

Abstract

The utility model relates to the field of low-voltage electric appliances, in particular to a plug-in base, which is characterized in that a second copper bar and a third copper bar are arranged between a base main body and a first wire arrangement cover plate which are stacked along a direction d2 and are limited at corresponding working positions by the base main body and the first wire arrangement cover plate; the projection direction of the base unit is an orthogonal projection in the direction d2, and the first wire arrangement cover plate shields the part of the second copper bar except the second connecting terminal on the wire inlet side and the part of the third copper bar except the first connecting terminal on the wire outlet side; the plug-in base is simpler in structure, attractive in appearance and high in safety.

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. A large number of components, and a large amount of labor for assembly operation; 2. Wires are exposed, which can easily cause the risk of electric shock and the risk of phase-to-phase short circuit; 3. A large number of wire connection points, complicated wiring and inconvenient maintenance; 4. Unreliable wire connections, which can easily cause virtual connections and misconnections; and 5. Long power outage time and a large power outage range during maintenance. SUMMARY

[0003] The utility model aims at overcoming at least one defect of the prior art, and provides a plug-in base which is simpler and more attractive in structure and has high safety.

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

[0005] A plug-in base includes n base units and n≥1, each base unit includes a base and a terminal group provided on the base, the base includes a mounting position group provided thereon, and the mounting position group includes a meter position for accommodating an electric energy meter; the terminal group includes plug-in incoming line side second connection terminals, meter incoming line connection terminals for plug-in electrical connection with incoming line connection terminals of the electric energy meter, meter outgoing line connection terminals for plug-in electrical connection with outgoing line connection terminals of the electric energy meter, and plug-in outgoing line side first connection terminals;

[0006] Each second copper bar has one end connected to and electrically connected to the corresponding meter incoming line connection terminal and the other end as the corresponding incoming line side second connection terminal; and each third copper bar has one end connected to and electrically connected to the corresponding meter outgoing line connection terminal and the other end as the corresponding outgoing line side first connection terminal;

[0007] The base includes a base body and a first wire management cover plate stacked in a direction d2; and the base is limited in position with the second copper bars and the third copper bars, respectively, to limit the second copper bars and the third copper bars at corresponding working positions, respectively;

[0008] The projection direction of the base unit is the orthogonal projection of the direction d2, and the first wire management cover plate blocks parts of the second copper bars other than the incoming line side second connection terminals and parts of the third copper bars other than the outgoing line side first connection terminals.

[0009] Further, the base is provided with a second copper bar hole corresponding to each second copper bar and a third copper bar hole corresponding to each third copper bar, and the part of each second copper bar other than the incoming line side second connecting terminal is located in the corresponding second copper bar hole, and the part of each third copper bar other than the outgoing line side first connecting terminal is located in the corresponding third copper bar hole.

[0010] Further, in the base unit, the connecting terminals of the group of electric meter connecting terminals are arranged in sequence and in parallel along the direction d1, the electric meter incoming line connecting terminals and the electric meter outgoing line connecting terminals are arranged in sequence and in alternation along the direction d1, the incoming line side second connecting terminals are arranged in sequence and in parallel along the direction d1, the outgoing line side first connecting terminals are arranged in sequence and in parallel along the direction d1, and the incoming line side second connecting terminals and the outgoing line side first connecting terminals are arranged in sequence along the direction d1.

[0011] The second copper bar sequentially comprises a second copper bar head section, a second copper bar middle section and a second copper bar tail section, the second copper bar head section is connected to and electrically connected with the corresponding electric meter incoming line connecting terminal, and the second copper bar tail section serves as the corresponding incoming line side second connecting terminal; the third copper bar sequentially comprises a third copper bar head section, a third copper bar middle section and a third copper bar tail section, the third copper bar head section is connected to and electrically connected with the corresponding electric meter outgoing line connecting terminal, and the third copper bar tail section serves as the outgoing line side first connecting terminal.

[0012] In the orthogonal projection of the base unit in the direction d1, the second copper bar middle section and the third copper bar middle section are arranged in parallel along the direction d2.

[0013] In the orthogonal projection of the base unit in the direction d2, part of the second copper bar middle section and part of the third copper bar middle section are arranged in cross.

[0014] The direction d1 and the direction d2 are perpendicular to each other.

[0015] Further, the base unit further comprises an insulating partition plate, and the insulating partition plate is located between the second copper bar middle section and the third copper bar middle section in the direction d2.

[0016] In the orthogonal projection of the base unit in the direction d2, part of the second copper bar middle section and part of the third copper bar middle section are arranged in cross, and the insulating partition plate at least separates the part of the second copper bar middle section and the part of the third copper bar middle section that are arranged in cross.

[0017] Further, one side of the insulating partition plate is provided with a second copper bar slot corresponding to the middle section of the second copper bar, and the other side is provided with a third copper bar slot corresponding to the middle section of the third copper bar; the middle section of the second copper bar that overlaps with the insulating partition plate in the orthogonal projection of the base unit in the projection direction d2 is inserted into the corresponding second copper bar slot; the middle section of the third copper bar that overlaps with the insulating partition plate in the orthogonal projection of the base unit in the projection direction d2 is inserted into the corresponding third copper bar slot.

[0018] Further, the mounting position group further comprises a line-out switch position arranged on the base and used for accommodating a line-out switch; in the base unit, the electric meter position and the line-out switch position are respectively located on both sides of the first wire arrangement cover in the direction d3;

[0019] The terminal group further comprises a line-out side second connecting terminal corresponding to the line-out side first connecting terminal and being of a plug-in type, and the line-out side first connecting terminal and the line-out side second connecting terminal corresponding to each other are arranged side by side and spaced apart in the direction d3; the line-out side first connecting terminal and the line-out side second connecting terminal are both located in the line-out switch position;

[0020] The direction d1, the direction d2 and the direction d3 are perpendicular to each other.

[0021] Further, the base unit further comprises a fourth copper bar, one end of the fourth copper bar serving as a line-out side second connecting terminal and the other end being used for electrical connection with a line-out external conductor;

[0022] The base further comprises a line-out cover plate group arranged and fixed in a stack along the direction d2 with the base body, and the line-out cover plate group is arranged and matched with the mounting position group one by one;

[0023] On the orthogonal projection of the base unit in the projection direction d2, the part of the fourth copper bar other than the line-out side second connecting terminal is shielded by the line-out cover plate group.

[0024] Further, the mounting position group further comprises a line-out position; in the base unit, the electric meter position, the line-out switch position and the line-out position are arranged in sequence in the direction d3, and the line-out switch position and the line-out position are arranged side by side in the direction d3;

[0025] The terminal group further comprises an external line connection terminal arranged in the line-out position and corresponding to the fourth copper bar one by one; one end of the fourth copper bar serves as a second connecting terminal, and the other end is connected with the external line connection terminal and electrically connected, and the external line connection terminal is used for connection with and electrical connection with a line-out external conductor;

[0026] On the orthogonal projection of the base unit in the projection direction d2, the part of the fourth copper bar other than the line-out side second connecting terminal and the external line connection terminal are shielded by the line-out cover plate group.

[0027] Further, in the base unit, the base body, the first wire arrangement cover plate and the wire outlet cover plate set cooperatively form a wire outlet switch cavity for the wire outlet switch to be inserted along the direction d2.

[0028] Further, the installation site group further comprises a wire inlet switch site; in the base unit, the wire inlet switch site and the wire outlet switch site are sequentially arranged along the direction d1, the wire inlet switch site and the wire outlet switch site are located on one side of the first wire arrangement cover plate along the direction d3, and the electric meter site is located on the other side of the first wire arrangement cover plate along the direction d3; the terminal group further comprises wire inlet side first connecting terminals of the plug-in type, the wire inlet side first connecting terminals are arranged in one-to-one correspondence with the wire inlet side second connecting terminals and are used in cooperation, and the wire inlet side first connecting terminals and the wire inlet side second connecting terminals are both located in the corresponding wire inlet switch sites.

[0029] Further, the base further comprises a wire inlet site arranged thereon; in the base unit, the wire inlet site and the wire inlet switch site are arranged side by side along the direction d3, and the wire inlet switch site and the wire outlet switch site are arranged side by side;

[0030] The terminal group further comprises wire inlet external connection terminals located in the wire inlet site; the plug-in base further comprises first copper bars, the first copper bars are arranged in one-to-one correspondence with the wire inlet external connection terminals, one end of the first copper bar serves as the wire inlet side first connecting terminal, the other end of the first copper bar is connected with the corresponding wire inlet external connection terminal and is electrically connected, and the wire inlet external connection terminal is used to be connected with and electrically connected with the wire inlet external conductor;

[0031] The base further comprises a wire inlet cover plate set arranged in a stack along the direction d2 and fixedly connected with the base body; in the projection direction of the base unit, the projection direction being the orthogonal projection of the direction d2, the part of the first copper bar other than the wire inlet side first connecting terminal and the wire inlet external connection terminal are shielded by the wire inlet cover plate set.

[0032] Further, in the base unit, the base body, the first wire arrangement cover plate and the wire inlet cover plate set cooperatively form a wire inlet switch cavity for the wire inlet switch to be inserted along the direction d2.

[0033] Further, the plug-in base comprises a base unit group, the base unit group comprises n base units and n≥2, and each base unit is sequentially and side by side arranged along the direction d1;

[0034] The plug-in base further comprises a wire inlet site arranged on the base of one base unit;

[0035] The plug-in base further comprises an external connection incoming line terminal in the incoming line position; the plug-in base further comprises a fifth copper bar, which is arranged one-to-one corresponding to the phase of the electric circuit; the fifth copper bar comprises a fifth copper bar plug-in section, a fifth copper bar middle section and a fifth copper bar matching section, one end of the fifth copper bar plug-in section and the fifth copper bar matching section is connected with the fifth copper bar middle section, the fifth copper bar plug-in section serves as a first connection terminal at the incoming line side, and the fifth copper bar matching section is electrically connected with the corresponding external connection incoming line terminal, which is used for being connected with an external conductor of the incoming line.

[0036] The base further comprises an incoming line cover plate group which is arranged in a stacked manner along the direction d2 and is fixedly connected with the base body; the projection direction of the base unit group is the orthogonal projection of the direction d2, and the external connection incoming line terminal is shielded by the incoming line cover plate group.

[0037] Further, in the base unit, the incoming line switch position is arranged close to the electric meter position relative to the outgoing line switch position along the direction d3; the fifth copper bar middle section passes through the outgoing line switch position between adjacent incoming line switch positions.

[0038] The plug-in base further comprises a middle wire arrangement plate group which is arranged in a stacked manner along the direction d2 and is fixedly matched with each base body; the projection direction of the plug-in base is the orthogonal projection of the direction d2, and the fifth copper bar middle section is shielded by the middle wire arrangement plate group, and the external connection incoming line terminal is shielded by the corresponding incoming line cover plate group.

[0039] In the base unit group, the base body, the middle wire arrangement plate group and the first wire arrangement cover plate cooperate to form an incoming line switch cavity for the incoming line switch to be inserted into along the direction d2.

[0040] Further, in the base unit, the incoming line switch position and the outgoing line switch position are arranged side by side; along the direction d3, the fifth copper bar middle section passes through one side of the outgoing line switch position between adjacent two incoming line switch positions, and the other side of the outgoing line switch position between the adjacent two incoming line switch positions is provided with an electric meter position; the plug-in base further comprises a middle wire arrangement plate group which is arranged in a stacked manner along the direction d2 and is fixedly matched with each base body; the projection direction of the plug-in base is the orthogonal projection of the direction d2, and the fifth copper bar middle section is shielded by the middle wire arrangement plate group.

[0041] Further, the outgoing line positions of each base unit are arranged side by side along the direction d3; the outgoing line switch position between adjacent two incoming line switch positions is a neighboring outgoing line switch position, and the outgoing line position and the fifth copper bar middle section corresponding to the neighboring outgoing line switch position are respectively located on two sides of the middle wire arrangement plate group along the direction d2; the incoming line position is arranged away from the electric meter position relative to the outgoing line position along the direction d3.

[0042] Further, the base comprises a wire inlet switch avoiding gap; in the base unit, the wire inlet switch avoiding gap and the wire outlet switch are sequentially arranged along the direction d1, and the second connection terminal on the wire inlet side is located in the wire inlet switch avoiding gap.

[0043] The utility model discloses a plug-in base, and the second copper bar and the third copper bar are arranged in the base, so that the appearance of the plug-in base is more simple and beautiful, and the safety is improved; one end of the second copper bar is connected with the electric meter wire inlet connection terminal, and the other end is used as the wire inlet side second connection terminal of plug-in type; one end of the third copper bar is connected with the electric meter wire outlet connection terminal, and the other end is used as the wire outlet side first connection terminal of plug-in type; therefore, the number of parts is reduced, the structure of the plug-in base is more simple, the assembly operation with the corresponding electric device is simplified, the efficiency is improved, and the electric energy meter can be disassembled or replaced through hot plug.

[0044] In addition, one end of the fourth copper bar is used as the wire outlet side second connection terminal, and the other end is matched with the external wire outlet connection terminal, so that the number of parts is further reduced, and the structure of the plug-in base is simplified; in addition, the fourth copper bar is shielded, so that the appearance of the plug-in base is more simple and beautiful, and the safety is further improved.

[0045] In addition, one end of the first copper bar is used as the wire inlet side first connection terminal, and the other end is matched with the external wire inlet connection terminal, so that the number of parts is further reduced, and the structure of the plug-in base is simplified; in addition, the first copper bar is shielded, so that the appearance of the plug-in base is more simple and beautiful, and the safety is further improved. DRAWINGS

[0046] Figure 1 It is the structure schematic diagram of the plug-in base of the utility model under the first visual angle, and the plug-in base has a base unit, which is used for installing the electric energy meter of four phases (i.e. three-phase four-wire), the wire inlet switch of four phases (i.e. three-phase four-wire) and the wire outlet switch of four phases (i.e. three-phase four-wire);

[0047] Figure 2 It is the structure schematic diagram of the plug-in base of the utility model under the second visual angle, and the plug-in base has a base unit, which is used for installing the electric energy meter of four phases (i.e. three-phase four-wire), the wire inlet switch of four phases (i.e. three-phase four-wire) and the wire outlet switch of four phases (i.e. three-phase four-wire);

[0048] Figure 3 It is the structure schematic diagram of the plug-in base of the utility model under the second visual angle, and the plug-in base has a base unit, which is used for installing the electric energy meter of four phases (i.e. three-phase four-wire), the wire inlet switch of four phases (i.e. three-phase four-wire) and the wire outlet switch of four phases (i.e. three-phase four-wire);

[0049] Figure 4 It is the structure schematic diagram of the plug-in base of the utility model under the second visual angle, and the plug-in base has a base unit, which is used for installing the electric energy meter of four phases (i.e. three-phase four-wire), the wire inlet switch of four phases (i.e. three-phase four-wire) and the wire outlet switch of four phases (i.e. three-phase four-wire); Figure 1The structural schematic diagram of the copper bar circuit structure of the plug-in base in the first visual angle, used for cooperating with the four-phase (i.e. three-phase four-wire) electric energy meter, the four-phase (i.e. three-phase four-wire) incoming line switch and the four-phase (i.e. three-phase four-wire) outgoing line switch;

[0050] Figure 5 The control module of the utility model Figure 1 The structural schematic diagram of the copper bar circuit structure of the plug-in base in the second visual angle, used for cooperating with the four-phase (i.e. three-phase four-wire) electric energy meter, the four-phase (i.e. three-phase four-wire) incoming line switch and the four-phase (i.e. three-phase four-wire) outgoing line switch;

[0051] Figure 6 The structural schematic diagram of the outgoing line switch and the control module in two visual angles;

[0052] Figure 7 The structural schematic diagram of the outgoing line switch, the control module and the sampling device in the assembled state; in the subgraph (71), the outgoing line switch, the control module and the sampling device are in the assembled state; in the subgraph (72), the control module and the sampling device are in the assembled state, and the outgoing line switch and the control module and the sampling device are in the separated state;

[0053] Figure 8 The structural schematic diagram of the sampling device and the control module;

[0054] Figure 9 The structural schematic diagram of the control module;

[0055] Figure 10 The structural schematic diagram of the outgoing line switch and the sampling device;

[0056] Figure 11 The structural schematic diagram of the plug-in base in the second visual angle, the plug-in base has a base unit, and at least a second indicating structure is shown;

[0057] Figure 12 The structural schematic diagram of the plug-in base in the second visual angle, at least a first wire arranging 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 the four-phase (i.e. three-phase four-wire) electric energy meter, the four-phase (i.e. three-phase four-wire) incoming line switch and the four-phase (i.e. three-phase four-wire) outgoing line switch;

[0058] Figure 13 The explosion view of the plug-in base, the plug-in base has a base unit, and is used for installing the four-phase (i.e. three-phase four-wire) electric energy meter, the four-phase (i.e. three-phase four-wire) incoming line switch and the four-phase (i.e. three-phase four-wire) outgoing line switch;

[0059] Figure 14 is the utility model Figure 13 is the enlarged view of the 9000 part of the utility model

[0060] Figure 15 is the structure schematic view of the electric meter connecting terminal group, second copper bar, third copper bar and insulating partition plate of the utility model, wherein the subgraph (151) is the structure schematic view of the electric meter connecting terminal group, second copper bar, third copper bar and insulating partition plate under the assembling state, and the subgraph (152) is the structure schematic view of the electric meter connecting terminal group, second copper bar, third copper bar and insulating partition plate under the disassembling state;

[0061] 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;

[0062] Figure 17 is the structure schematic view of the copper bar circuit structure, four-phase (namely three-phase four-wire) incoming line switch and four-phase (namely three-phase four-wire) outgoing line switch and 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;

[0063] Figure 18 is the structure schematic view of the plug-in base under the second visual angle, and at least shows the first wire arrangement cover plate, second incoming line cover plate and second outgoing line cover plate, and the plug-in base has one base unit and is used for installing two-phase (namely single-phase two-wire) electric energy meter, two-phase (namely single-phase two-wire) incoming line switch and two-phase (namely single-phase two-wire) outgoing line switch;

[0064] 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 two-phase (namely single-phase two-wire) electric energy meter, two-phase (namely single-phase two-wire) incoming line switch and two-phase (namely single-phase two-wire) outgoing line switch;

[0065] Figure 20 is the utility model Figure 19 is the first explosion view of the plug-in base in the utility model

[0066] Figure 21 is the second explosion view of the plug-in base in the utility model Figure 19

[0067] Figure 22 ​is 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;

[0068] 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;

[0069] 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 ;

[0070] 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 the incoming line position independent of each other;

[0071] Figure 26 is the structure schematic view of the copper bar circuit structure of the plug-in base in Figure 25 ;

[0072] 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 the incoming line switch avoiding gap for avoiding incoming line switch;

[0073] 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;

[0074] Figure 29 is the structure schematic view of the plug-in base under the second visual angle, and it has one base unit, and the first wiring board is equipped with the first short-circuit hole and the second short-circuit hole;

[0075] Figure 30 is the structure schematic view of the short-circuit device.

[0076] Explanation of reference signs

[0077] 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 group 106, first incoming wire cover plate 1061, second incoming wire cover plate 1062, outgoing wire cover plate group 107, first outgoing wire cover plate 1071, second outgoing wire cover plate 1072; intermediate wire arrangement plate group 108, first short-circuiting hole 1091, second short-circuiting hole 1092, incoming wire switch avoiding gap 9211; 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; electric meter connection terminal group 20, electric meter incoming wire connection terminal 21, electric meter outgoing wire connection terminal 22; incoming wire side connection terminal group 30, incoming wire side first connection terminal 31, incoming wire side second connection terminal 32; outgoing wire side connection terminal group 40, outgoing wire side first connection terminal 41, outgoing wire side second connection terminal 42; control module connection terminal group 50; expansion module connection terminal group 60; external connection incoming wire connection terminal 70; external connection outgoing wire connection terminal 80; electric meter to position detection mechanism 91; incoming wire switch to position detection mechanism 92; outgoing wire switch to position detection mechanism 93; 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 matching section 1503; electric energy meter 910; incoming wire switch 920; outgoing wire switch 930, operating piece 931, pulling piece 932, limiting shoulder 933, outgoing 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; control module 940, driving mechanism 941, control circuit board 942, tripping mechanism 943, motor 944, transmission gear set 945, driving gear piece 946, control module connection terminal 947; sampling device 950, first front connection terminal group 951, second front connection terminal group 952, first rear connection terminal group 953, second rear connection terminal group 954, sampling circuit board 955, current sampling piece 956, residual current transformer 957, sampling device shell 958; short-circuiting device 960, short-circuiting device shell 961, short-circuiting piece 962, first short-circuiting part 963, second short-circuiting part 964. DETAILED DESCRIPTION

[0078] The following embodiments of the plug-in base of the utility model are further illustrated in combination with the accompanying drawings. The plug-in base of the utility model is not limited to the description of the following embodiments.

[0079] 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 an electric energy meter 910, an incoming line switch 920 and an outgoing line switch 930 for electric energy metering and simultaneously having other functions; the metering box is usually provided with an electric energy meter 910, an incoming line switch 920 (the incoming line switch 920 refers to a switch electric appliance connected in series between the electric energy meter 910 and a power supply side), an outgoing line switch 930 (the outgoing line switch 930 refers to a switch electric appliance connected in series between the electric energy meter 910 and a load side), etc., and the electric energy meter 910, the incoming line switch 920 and the outgoing line switch 930 are arranged in one-to-one correspondence and used in cooperation; the plug-in base of the utility model is used at least for bearing the electric energy meter 910 and the outgoing line switch 930, and the incoming line switch 920 can be borne on the plug-in base according to actual needs or fixed on a structure (for example, a 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.

[0080] Further, as shown in Figures 1-2 , the metering box is further provided with an expansion module for realizing function expansion, the expansion module can be borne on the plug-in base, and the expansion module can also be arranged on a structure outside the plug-in base, which is arranged by a person skilled in the art according to actual needs.

[0081] 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 electric appliance at least having an operating mechanism and a contact system, the operating mechanism being connected in transmission with the contact system to close and open the contact system.

[0082] 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 herein.

[0083] 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.

[0084] 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.

[0085] 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).

[0086] 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.

[0087] Further, the phase numbers of the electric energy meter 910, the incoming line switch 920 and the outgoing line switch 930 are the same.

[0088] 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.

[0089] 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.

[0090] 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.

[0091] 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.

[0092] 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.

[0093] 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.

[0094] As shown in Figures 1-2 , 4-5, 8, 11-14, 18, 29-30, the following is the first embodiment of the plug-in base of the utility model.

[0095] 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.

[0096] 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.

[0097] 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.

[0098] 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 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.

[0099] Specifically, as shown in Figures 18-20As shown in Figs. 22-27, the electric energy meter 910 is a two-phase electric energy meter (or a single-phase two-line electric energy meter); the number of the electric meter incoming line connection terminals 21, the number of the incoming line connection terminals of the electric energy meter 910, the number of the electric meter outgoing line connection terminals 22, and the number of the outgoing line connection terminals of the electric energy meter 910 are all 2. The outgoing line switch 930 is a two-phase circuit breaker (or a single-phase two-line circuit breaker); the number of the electric meter incoming line connection terminals 21, the number of the incoming line connection terminals of the electric energy meter 910, the number of the electric meter outgoing line connection terminals 22, and the number of the outgoing line connection terminals of the electric energy meter 910 are all 2.

[0100] Each connection terminal of the electric meter connection terminal group 20 is used to be plugged and electrically connected with each connection terminal of the electric energy meter 910 along the direction d3 or the direction d2, that is, when the electric energy meter 910 is installed to the plug-in base, each connection terminal of the electric meter connection terminal group 20 is plugged and electrically connected with each connection terminal of the electric energy meter 910 along the direction d3, or each connection terminal of the electric meter connection terminal group 20 is plugged and electrically connected with each connection terminal of the electric energy meter 910 along the direction d2.

[0101] Specifically, as shown in Figs. 22-27, in the plug-in base of the first embodiment, each connection terminal of the electric meter connection terminal group 20 is plugged and electrically connected with each connection terminal of the electric energy meter 910 along the direction d3. Figures 1-3

[0102] As shown in Figs. 22-27, the outgoing line switch connection terminal group is used to be plugged and electrically connected with each connection terminal of the outgoing line switch 930 along the direction d2, that is, when the outgoing line switch 930 is installed to the plug-in base, each connection terminal of the outgoing line switch connection terminal group is plugged and electrically connected with each connection terminal of the outgoing line switch 930 along the direction d2. Figures 1-3 As shown in Figs. 22-27, the terminal group further includes an incoming line switch connection terminal group, the incoming line switch connection terminal group, the electric meter connection terminal group 20, and the outgoing line switch connection terminal group are sequentially connected in the electric circuit, the incoming line switch connection terminal group includes incoming line switch second connection terminals, each incoming line switch second connection terminal is used to be plugged and electrically connected with each incoming line connection terminal of the incoming line switch 920 one by one, that is, each incoming line switch second connection terminal is plugged and electrically connected with each incoming line connection terminal of the incoming line switch 920, and each outgoing line connection terminal of the incoming line switch 920 is electrically connected with an incoming line external conductor.

[0103] Figures 1-2 The plug-in base of the first embodiment can realize the quick installation and circuit connection of the incoming line switch 920, simplifies the wiring operation and assembly operation between the plug-in base and the incoming line switch 920, and saves manpower.

[0104] The plug-in base of the first embodiment can realize the quick installation and circuit connection of the incoming line switch 920, simplifies the wiring operation and assembly operation between the plug-in base and the incoming line switch 920, and saves manpower.

[0105] ​​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 in 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 in 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 in the direction d2.

[0106] Specifically, as shown in Figures 1-3 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 in the direction d2.

[0107] Specifically, one end of each connection terminal of the electric meter connection terminal group 20 protrudes into the electric meter position 11, one end of each second connection terminal of the incoming line switch protrudes into the incoming line switch position 12, and one end of each connection terminal of the outgoing line switch connection terminal group protrudes into 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.

[0108] It should be noted 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 plug-in type connection terminal with a column, 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 plug-in type connection terminal with a column.

[0109] 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, and each connection terminal of the outgoing line switch 930 is a male head, and they are electrically connected by plugging.

[0110] 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.

[0111] 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.

[0112] 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.

[0113] Furthermore, the second connection terminals of each of the incoming line switches are arranged side by side at intervals along direction d1.

[0114] 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.

[0115] 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.

[0116] 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.

[0117] As other embodiments of the layout of the electric meter position 11, the incoming line switch position 12 and the outgoing line switch position 13, in the direction d3, the incoming line switch position 12 is arranged close to the electric meter position 11 relative to the outgoing line switch position 13, or the outgoing line switch position 13 is arranged close to the electric meter position 11 relative to the incoming line switch position 12.

[0118] As shown in Figures 1-2 , 11-14, the terminal group further comprises an incoming line side connecting terminal group 30 and an outgoing line side connecting terminal group 40, which are both fixedly arranged on the base 10; the incoming line side connecting terminal group 30 is an incoming line switch connecting terminal group, which comprises an incoming line side second connecting terminal 32 as an incoming line switch second connecting terminal, i.e. the incoming line side second connecting terminal 32 is used for one-to-one plug-in electrical connection with the outgoing line connecting terminal of the incoming line switch 920 (i.e. the external connecting terminal corresponding to the incoming line side second connecting terminal 32, which refers to the connecting terminal outside the plug-in base); the outgoing line side connecting terminal group 40 is an outgoing line switch connecting terminal group, which comprises an outgoing line side first connecting terminal 41 as an outgoing line switch first connecting terminal and an outgoing line side second connecting terminal 42 as an outgoing line switch second connecting terminal, i.e. the outgoing line side first connecting terminal 41 is used for plug-in electrical connection with the incoming line connecting terminal of the outgoing line switch 930 (i.e. the external connecting terminal corresponding to the outgoing line side first connecting terminal 41), the outgoing line side second connecting terminal 42 is used for plug-in electrical connection with the outgoing line connecting terminal of the outgoing line switch 930 (i.e. the external connecting terminal corresponding to the outgoing line side second connecting terminal 42), and the outgoing line side second connecting terminal 42 is also used for electrical connection with the outgoing line external conductor.

[0119] As shown in Figures 4-5 , 13-15, the base unit further comprises a copper bar circuit structure, which comprises second copper bars 120 and third copper bars 130 arranged in the base 10, the electric meter incoming line connecting terminals 21, the second copper bars 120 and the incoming line side second connecting terminals 32 (i.e. the incoming line switch second connecting terminals) are one-to-one correspondingly arranged, the electric meter outgoing line connecting terminals 22, the third copper bars 130 and the outgoing line side first connecting terminals 41 (i.e. the outgoing line switch first connecting terminals) are one-to-one correspondingly arranged; one end of each of the second copper bars 120 is connected to and electrically connected with the corresponding electric meter incoming line connecting terminal 21, and the other end of each of the second copper bars 120 is the corresponding incoming line side second connecting terminal 32; one end of each of the third copper bars 130 is connected to and electrically connected with the corresponding electric meter outgoing line connecting terminal 22, and the other end of each of the third copper bars 130 is the corresponding outgoing line side first connecting terminal 41.

[0120] 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.

[0121] 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.).

[0122] 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.

[0123] 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.

[0124] 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.

[0125] 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.

[0126] 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.

[0127] Specifically, referring to Figure 20 、 22As shown in FIG. 25, when the plug-in base is used for installing two-phase (i.e. single-phase two-wire) electric energy meter 910, (i.e. single-phase two-wire) incoming line switch 920 and (i.e. single-phase two-wire) outgoing line switch 930, i.e. when the electric circuit is a two-phase electric circuit, in the orthogonal projection of the plug-in base in the direction d2, in the orthogonal projection of the base unit in the direction d2 and in the orthogonal projection of the copper bar circuit structure in the direction d2, in the same base unit, one second copper bar 120 and one third copper bar 130 are arranged in cross, the second copper bar 120 overlaps the insulating partition plate 103 (specifically, the second copper bar middle section 1202 of the second copper bar 120 overlaps the insulating partition plate 103), and the other second copper bar 120 does not overlap the insulating partition plate 103, and two third copper bars 130 overlap the insulating partition plate 103 (specifically, the third copper bar middle section 1302 overlaps the insulating partition plate 103). As other embodiments, in the orthogonal projection of the plug-in base in the direction d2, in the same base unit, only one second copper bar 120 and one third copper bar 130 that cross each other overlap the insulating partition plate 103; or, in the orthogonal projection of the plug-in base in the direction d2, in the same base unit, each second copper bar 120 and each third copper bar 130 overlap the insulating partition plate 103.

[0128] Specifically, as shown in FIGS. 20 and 21, when the plug-in base is used for installing two-phase (i.e. single-phase two-wire) electric energy meter 910, (i.e. single-phase two-wire) incoming line switch 920 and (i.e. single-phase two-wire) outgoing line switch 930, i.e. when the electric circuit is a two-phase electric circuit, in the orthogonal projection of the plug-in base in the direction d2, in the orthogonal projection of the base unit in the direction d2 and in the orthogonal projection of the copper bar circuit structure in the direction d2, in the same base unit, one second copper bar 120 and one third copper bar 130 are arranged in cross, the second copper bar 120 overlaps the insulating partition plate 103 (specifically, the second copper bar middle section 1202 of the second copper bar 120 overlaps the insulating partition plate 103), and the other second copper bar 120 does not overlap the insulating partition plate 103, and two third copper bars 130 overlap the insulating partition plate 103 (specifically, the third copper bar middle section 1302 overlaps the insulating partition plate 103). As other embodiments, in the orthogonal projection of the plug-in base in the direction d2, in the same base unit, only one second copper bar 120 and one third copper bar 130 that cross each other overlap the insulating partition plate 103; or, in the orthogonal projection of the plug-in base in the direction d2, in the same base unit, each second copper bar 120 and each third copper bar 130 overlap the insulating partition plate 103. Figures 13-15 Specifically, as shown in FIGS. 20 and 21, when the plug-in base is used for installing two-phase (i.e. single-phase two-wire) electric energy meter 910, (i.e. single-phase two-wire) incoming line switch 920 and (i.e. single-phase two-wire) outgoing line switch 930, i.e. when the electric circuit is a two-phase electric circuit, in the orthogonal projection of the plug-in base in the direction d2, in the orthogonal projection of the base unit in the direction d2 and in the orthogonal projection of the copper bar circuit structure in the direction d2, in the same base unit, one second copper bar 120 and one third copper bar 130 are arranged in cross, the second copper bar 120 overlaps the insulating partition plate 103 (specifically, the second copper bar middle section 1202 of the second copper bar 120 overlaps the insulating partition plate 103), and the other second copper bar 120 does not overlap the insulating partition plate 103, and two third copper bars 130 overlap the insulating partition plate 103 (specifically, the third copper bar middle section 1302 overlaps the insulating partition plate 103). As other embodiments, in the orthogonal projection of the plug-in base in the direction d2, in the same base unit, only one second copper bar 120 and one third copper bar 130 that cross each other overlap the insulating partition plate 103; or, in the orthogonal projection of the plug-in base in the direction d2, in the same base unit, each second copper bar 120 and each third copper bar 130 overlap the insulating partition plate 103.

[0129] Figures 11-13 Specifically, as shown in FIGS. 20 and 21, when the plug-in base is used for installing two-phase (i.e. single-phase two-wire) electric energy meter 910, (i.e. single-phase two-wire) incoming line switch 920 and (i.e. single-phase two-wire) outgoing line switch 930, i.e. when the electric circuit is a two-phase electric circuit, in the orthogonal projection of the plug-in base in the direction d2, in the orthogonal projection of the base unit in the direction d2 and in the orthogonal projection of the copper bar circuit structure in the direction d2, in the same base unit, one second copper bar 120 and one third copper bar 130 are arranged in cross, the second copper bar 120 overlaps the insulating partition plate 103 (specifically, the second copper bar middle section 1202 of the second copper bar 120 overlaps the insulating partition plate 103), and the other second copper bar 120 does not overlap the insulating partition plate 103, and two third copper bars 130 overlap the insulating partition plate 103 (specifically, the third copper bar middle section 1302 overlaps the insulating partition plate 103). As other embodiments, in the orthogonal projection of the plug-in base in the direction d2, in the same base unit, only one second copper bar 120 and one third copper bar 130 that cross each other overlap the insulating partition plate 103; or, in the orthogonal projection of the plug-in base in the direction d2, in the same base unit, each second copper bar 120 and each third copper bar 130 overlap the insulating partition plate 103.

[0130] ​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.

[0131] 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.

[0132] 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.

[0133] 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.

[0134] 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.

[0135] 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 provided 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).

[0136] 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.

[0137] 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.

[0138] 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.

[0139] 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.

[0140] Specifically, the fourth copper busbar hole is formed by the cooperation of the first cable outlet cover plate 1071 and the base body 101.

[0141] 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.

[0142] 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).

[0143] 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.

[0144] 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.

[0145] 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.

[0146] 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.

[0147] 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.

[0148] Specifically, the copper bar circuit structure further includes 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 arrangement, 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).

[0149] 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.

[0150] 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.

[0151] 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.

[0152] Specifically, the first copper bar hole is formed by the first wire inlet cover plate 1061 and the base body 101.

[0153] 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.

[0154] 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.

[0155] 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.

[0156] 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.

[0157] 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.

[0158] Specifically, the plane on which the sampling circuit board 955 is located is perpendicular to the direction d2. Alternatively, at least part of the sampling circuit board 955 is located between the first connection terminal 41 on the outlet side and the second connection terminal 42 on the outlet side in the direction d3. Alternatively, the sampling circuit board 955 is located on one side of the inlet switch position 12 or the outlet switch position 13 in the direction d2. Alternatively, the sampling circuit board 955 is located on one side of the inlet switch position 12 and the outlet switch position 13 in the direction d2.

[0159] As shown in FIG. 1, the plug-in base of the first embodiment further includes a control module connection terminal group 50 fixedly arranged on the base 10. Each connection terminal of the control module connection terminal group 50 is used to be plugged into electrical connection with each wiring terminal of the control module 940, thereby providing working power supply for the control module 940. Further, the control module connection terminal group 50 is electrically connected with the outlet side connection terminal group 40. Figures 1-3 Specifically, one end of each connection terminal of the control module connection terminal group 50 protrudes into the outlet switch position 13 and is used to be plugged into the control module 940 to be in electrical connection with each wiring terminal of the control module 940. The control module connection terminal group 50 and the outlet side connection terminal group 40 are arranged side by side and spaced apart in the 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. As shown in FIG. 1, the control module 940 further includes a control module wiring terminal 947 electrically connected with the control circuit board 942 and plugged into electrical connection with the connection terminals of the control module connection terminal group 50.

[0160] Figure 6 As other embodiments, 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 realized by the prior art.

[0161] In the plug-in base of the first embodiment, the base unit further includes a communication connection terminal (not shown in the figure) arranged in the outlet switch position 13. The communication connection terminal is connected with the sampling circuit board 955 of the sampling device 950 and is used to be plugged into connection with the communication terminal of the control module 940, so that the control module 940 receives the sampling signals obtained by the sampling device 950. Further, the communication connection terminal and the control module connection terminal group 50 are of an integrated structure or a split structure.

[0162] The structures of the external connection inlet wiring terminal 70 and the external connection outlet wiring terminal 80 can be the same or different.

[0163] The structures of the external connection inlet wiring terminal 70 and the external connection outlet wiring terminal 80 can be the same or different. ​

[0164] 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, when installed, 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.

[0165] 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 expansion modules is ≥1, and the number and function of the expansion modules 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.

[0166] 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.

[0167] 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.

[0168] 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.

[0169] 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.

[0170] 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.

[0171] 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.

[0172] 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.

[0173] 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.

[0174] 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.

[0175] As Figures 29-30As shown, the connection terminals of the meter connection terminal set 20 (including the meter incoming line connection terminals 21 and the meter outgoing line connection terminals 22) are connected to the connection terminals of the electric energy meter 910 at one end, and at least part of the other end is fixed between the base main body 101 and the first wiring cover 102 of the base 10, that is, at least part of the other end of the connection terminals of the meter connection terminal set 20 is covered by the first wiring cover 102. The first wiring cover 102 is provided with a first short-circuit hole 1091 and a second short-circuit hole 1092. The base unit further comprises a short-circuit device 960, which comprises a short-circuit device shell 961 and a short-circuit piece 962 at least partially located in the short-circuit device shell 961. The short-circuit piece 962 comprises a first short-circuit part 963 and a second short-circuit part 964 connected in series, and is used to contact and electrically connect with the meter incoming line connection terminals 21 and the meter outgoing line connection terminals 22 of the same phase of the electric energy meter 910; that is, the short-circuit piece 962 is arranged and matched with each phase of the electric circuit one by one, and the short-circuit piece 962 is arranged and electrically connected with each phase of the electric energy meter 910 one by one; the meter incoming line connection terminals 21, the first short-circuit part 963 and the first short-circuit hole 1091 are arranged and matched one by one; the meter outgoing line connection terminals 22, the second short-circuit part 964 and the second short-circuit hole 1092 are arranged and matched one by one; when the short-circuit device 960 is in the short-circuit position, the first short-circuit part 963 is in contact and electrical connection with the corresponding meter incoming line connection terminal 21, and the second short-circuit part 964 is in contact and electrical connection with the corresponding meter outgoing line connection terminal 22.

[0176] The short-circuit device 960 can short-circuit the meter incoming line connection terminals 21 and the meter outgoing line connection terminals 22 in each phase of the electric circuit when the electric energy meter 910 needs to be replaced or maintained, so that the electric energy meter 910 can be removed without power-off. The short-circuit device shell 961 can drive multiple short-circuit pieces 962 to operate synchronously, thereby improving the operation efficiency.

[0177] As shown in the first embodiment of the cooperation mode of the short-circuit device and the meter incoming line terminal set 20, Figures 29-30

[0178] One end of the first short-circuit part 963 protrudes outside the short-circuit device shell 961, and is used to pass through the corresponding first short-circuit hole 1091 to contact and electrically connect with the corresponding meter incoming line connection terminal 21; one end of the second short-circuit part 964 protrudes outside the short-circuit device shell 961, and is used to pass through the corresponding second short-circuit hole 1092 to contact and electrically connect with the corresponding meter outgoing line connection terminal 22. Further, the first short-circuit part 963 is used to abut and electrically connect with the meter incoming line connection terminal 21; the second short-circuit part 964 is used to abut and electrically connect with the meter outgoing line connection terminal 22. In this embodiment, the first short-circuit part 963 and the second short-circuit part 964 are partially outside the short-circuit device shell 961, so the short-circuit piece 962 belongs to the case of being partially located in the short-circuit device shell 961.​

[0179] 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.

[0180] 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.

[0181] The following is a second embodiment of the cooperation mode of the shorting device and the meter connection terminal group 20:

[0182] 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.

[0183] 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.

[0184] 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.

[0185] 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.

[0186] 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.

[0187] 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.

[0188] 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 mode 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.

[0189] 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 connecting terminals, facilitating quick wiring. It should be noted that the modularized sampling device 950 can not only be applied in the metering box, but also in other application scenarios, such as control cabinets, power distribution cabinets, etc.

[0190] 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 front connecting 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 (i.e. the incoming line connecting terminal of the outgoing line switch 930, the outgoing 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.

[0191] 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 terminals and the outgoing line connection terminals 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 outgoing line side first connection terminal 41 and the outgoing line side second connection terminal 42) other than the sampling device 950 as female, and the sampling device shell 958 is provided with insertion holes respectively 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.

[0192] 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.

[0193] 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.

[0194] 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.

[0195] 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.

[0196] 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.

[0197] As shown in Figure 8 and 10 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.

[0198] Further, when the sampling element comprises a current sampling element 956, the current sampling element 956 is a Rogowski coil current transformer, and each current sampling element 956 is sleeved on the corresponding first connecting conductor.

[0199] 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.

[0200] It should be pointed out that the setting positions of the current sampling element 956 and the residual current transformer 957 are not limited to the above-mentioned manner, and the setting manner of the two can also be changed to: the current sampling element 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 element 956 is sleeved on the corresponding first connecting conductor (or second connecting conductor), and each first connecting conductor (or second connecting conductor) passes through the middle of the residual current transformer 957.

[0201] 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 element 956 thereon, the front segment second plate and the rear segment third plate are opposite along the direction d3 and limit the current sampling element 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 element 956 from the radial direction. The specific structure of the first connecting conductor not only facilitates the installation of the current sampling element 956, but also realizes reliable limiting of the position of the current sampling element 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.

[0202] 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.

[0203] 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.

[0204] 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.

[0205] 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.

[0206] 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.

[0207] 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.

[0208] 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.

[0209] 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.

[0210] 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.

[0211] 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.

[0212] 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.

[0213] 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.

[0214] 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.

[0215] 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.

[0216] As shown in the figure: Figure 28As shown in

[0217] As shown in Figures 25-26 As shown in

[0218] 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.

[0219] As shown in

[0220] 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.

[0221] As shown in Figures 16-17 , 19-24, is the ninth embodiment of the plug-in base of the utility model.

[0222] As shown in Figures 16-17 , 19-24, the plug-in base of the ninth embodiment is different from the plug-in base of the seventh embodiment in that the number of the base units of the base unit group in the plug-in base of the ninth embodiment is n≥2.

[0223] 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 located 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 connection terminal group arranged in the wire inlet position 15 is the total wire inlet connection terminal group; the wire inlet switch connection terminal group of each base unit is electrically connected with the wire inlet connection 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 connection 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 connection terminal group.

[0224] 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.

[0225] 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 in 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.

[0226] 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 numbers are 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.

[0227] 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.

[0228] 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.

[0229] 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.

[0230] 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.

[0231] 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, comprising n base units and n > 1, each base unit comprising a base (10) and a terminal group arranged on the base (10), the base (10) comprising a mounting position group arranged thereon, the mounting position group comprising a meter position (11) for accommodating an electric energy meter (910); the terminal group comprising a plug-in type incoming line side second connection terminal (32), an electric meter incoming line connection terminal (21) for plug-in electrical connection with an incoming line terminal of the electric energy meter (910), an electric meter outgoing line connection terminal (22) for plug-in electrical connection with an outgoing line terminal of the electric energy meter (910), and a plug-in type outgoing line side first connection terminal (41); characterized in that each second copper bar (120) is connected and electrically connected at one end to a corresponding electric meter incoming line connection terminal (21) and at the other end as a corresponding incoming line side second connection terminal (32); each third copper bar (130) is connected and electrically connected at one end to a corresponding electric meter outgoing line connection terminal (22) and at the other end as a corresponding outgoing line side first connection terminal (41); the base (10) comprises a base body (101) and a first wire arrangement cover plate (102) arranged in a direction d2; the base (10) is in limiting cooperation with the second copper bars (120) and the third copper bars (130) to limit the second copper bars (120) and the third copper bars (130) at corresponding working positions, respectively; in the projection direction of the base unit on the orthogonal projection of the direction d2, the first wire arrangement cover plate (102) shields parts of the second copper bars (120) other than the incoming line side second connection terminals (32) and parts of the third copper bars (130) other than the outgoing line side first connection terminals (41).

2. The plug base of claim 1, wherein: The base (10) is provided with second copper bar holes corresponding one-to-one with the second copper bars (120) and third copper bar holes corresponding one-to-one with the third copper bars (130), and parts of each second copper bar (120) other than the incoming line side second connection terminal (32) are located in the corresponding second copper bar hole, and parts of each third copper bar (130) other than the outgoing line side first connection terminal (41) are located in the corresponding third copper bar hole.

3. The plug base of claim 2, wherein: In the base unit, the connection terminals of the electric meter connection terminal group (20) are arranged in sequence and side by side at intervals along the direction d1, the electric meter incoming line connection terminals (21) and the electric meter outgoing line connection terminals (22) are arranged in sequence and alternately along the direction d1, each incoming line side second connection terminal (32) is arranged in sequence and side by side at intervals along the direction d1, each outgoing line side first connection terminal (41) is arranged in sequence and side by side at intervals along the direction d1, and the incoming line side second connection terminals (32) and the outgoing line side first connection terminals (41) are arranged in sequence along the direction d1. The second copper bar (120) sequentially connects a second copper bar head section (1201), a second copper bar middle section (1202), and a second copper bar tail section (1203). 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) sequentially connected. 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 outgoing line side first connection terminal (41). In the projection direction of the base unit, the second copper bar middle section (1202) and the third copper bar middle section (1302) are arranged side by side along the direction d2. In the projection direction of the base unit, part of the second copper bar middle section (1202) and part of the third copper bar middle section (1302) are arranged in a cross manner. The direction d1 and the direction d2 are perpendicular to each other.

4. The plug base of claim 3, wherein: The base unit further includes an insulating partition plate (103) located between the second copper bar middle section (1202) and the third copper bar middle section (1302) along the direction d2. In the projection direction of the base unit, part of the second copper bar middle section (1202) and part of the third copper bar middle section (1302) are arranged in a cross manner, and the insulating partition plate (103) at least separates the cross part of the second copper bar middle section (1202) and the third copper bar middle section (1302).

5. The plug base of claim 4, wherein: One side of the insulating partition plate (103) is provided with a second copper bar slot corresponding to the second copper bar middle section (1202), and the other side is provided with a third copper bar slot corresponding to the third copper bar middle section (1302). In the projection direction of the base unit, the second copper bar middle section (1202) overlapping with the insulating partition plate (103) is arranged in the corresponding second copper bar slot, and in the projection direction of the base unit, the third copper bar middle section (1302) overlapping with the insulating partition plate (103) is arranged in the corresponding third copper bar slot.

6. The plug base of claim 1, wherein: The mounting position group further includes an outgoing line switch position (13) arranged on the base (10) and used for accommodating the outgoing line switch (930). In the base unit, the electric meter position (11) and the outgoing line switch position (13) are respectively located on both sides of the first wire arrangement cover plate (102) along the direction d3. The terminal group further includes an outgoing line side second connection terminal (42) corresponding to the outgoing line side first connection terminal (41) and arranged in a plug-in type. The outgoing line side first connection terminal (41) and the outgoing line side second connection terminal (42) corresponding to each other are arranged side by side and spaced apart along the direction d3. The outgoing line side first connection terminal (41) and the outgoing line side second connection terminal (42) are both located in the outgoing line switch position (13). The direction d1, the direction d2 and the direction d3 are perpendicular to each other.

7. The plug base of claim 6, wherein: The base unit further comprises a fourth copper bar (140) having one end as a second connection terminal (42) on the outgoing line side and the other end for electrical connection with an external conductor of the outgoing line; The base (10) further comprises an outgoing line cover plate group (107) stacked and fixedly connected with the base body (101) along the direction d2, and the outgoing line cover plate group (107) is arranged in one-to-one correspondence with the mounting position group and cooperates with the mounting position group. In the projection direction of the base unit, the part of the fourth copper bar (140) other than the second connection terminal (42) on the outgoing line side is shielded by the outgoing line cover plate group (107).

8. The plug base of claim 7, wherein: The mounting position group further comprises an outgoing line position (16); in the base unit, the electric meter position (11), the outgoing line switch position (13) and the outgoing line position (16) are arranged in sequence along the direction d3, and the outgoing line switch position (13) and the outgoing line position (16) are arranged side by side along the direction d3; The terminal group further comprises an external connection outgoing line connection terminal (80) arranged in the outgoing line position (16) and arranged in one-to-one correspondence with the fourth copper bar (140); one end of the fourth copper bar (140) is connected as a second connection terminal (42), and the other end is connected with the external connection outgoing line connection terminal (80) and electrically connected, and the external connection outgoing line connection terminal (80) is used for connection with the external conductor of the outgoing line and electrical connection; In the projection direction of the base unit, the part of the fourth copper bar (140) other than the second connection terminal (42) on the outgoing line side and the external connection outgoing line connection terminal (80) are shielded by the outgoing line cover plate group (107).

9. The plug base of claim 7, wherein: In the base unit, the base body (101), the first wire arrangement cover plate (102) and the outgoing line cover plate group (107) cooperatively form an outgoing line switch cavity for insertion of the outgoing line switch (930) along the direction d2.

10. The plug base of claim 6, wherein: The mounting position group further comprises an incoming line switch position (12); in the base unit, the incoming line switch position (12) and the outgoing line switch position (13) are arranged in sequence along the direction d1, and the incoming line switch position (12) and the outgoing line switch position (13) are located on one side of the first wire arrangement cover plate (102) along the direction d3, and the electric meter position (11) is located on the other side of the first wire arrangement cover plate (102) along the direction d3; the terminal group further comprises a plug-in type incoming line side first connection terminal (31), and the incoming line side first connection terminal (31) and the incoming line side second connection terminal (32) are arranged in one-to-one correspondence and used in cooperation, and the incoming line side first connection terminal (31) and the incoming line side second connection terminal (32) are both located in the corresponding incoming line switch position (12).

11. The plug base of claim 10, wherein: The base (10) further comprises an incoming line position (15) arranged thereon; 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, and the incoming line switch position (12) and the outgoing line switch position (13) are arranged side by side; The terminal group further comprises an external connection incoming line terminal (70) located in the incoming line position (15); the plug-in base further comprises a first copper bar (110) corresponding to the external connection incoming line terminal (70); one end of the first copper bar (110) is used as the incoming line side first connection terminal (31), and the other end is connected to and electrically connected with the corresponding external connection incoming line terminal (70); the external connection incoming line terminal (70) is used for being connected to and electrically connected with an external conductor of the incoming line; The base (10) further comprises an incoming line cover plate group (106) which is stacked and fixedly connected with the base body (101) along the direction d2; in the orthogonal projection of the base unit along the direction d2, the part of the first copper bar (110) except the incoming line side first connection terminal (31) and the external connection incoming line terminal (70) are shielded by the incoming line cover plate group (106).

12. The plug base of claim 11, wherein: In the base unit, the base body (101), the first wire arrangement cover plate (102) and the incoming line cover plate group (106) cooperatively form an incoming line switch cavity for the incoming line switch (920) to be inserted into along the direction d2.

13. The plug base of claim 10, wherein: The plug-in base comprises a base unit group, the base unit group comprises n base units and n≥2, and each base unit is arranged side by side along the direction d1 in sequence; The plug-in base further comprises an incoming line position (15) arranged on the base (10) of one base unit; The plug-in base further comprises an external connection incoming line terminal (70) located in the incoming line position (15); the plug-in base further comprises a fifth copper bar (150) corresponding to the number of phases of the electric circuit; the fifth copper bar (150) comprises 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 each 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) is used as the incoming line side first connection terminal (31); the fifth copper bar matching section (1503) is electrically connected with the corresponding external connection incoming line terminal (70); and the external connection incoming line terminal (70) is used for being connected to and electrically connected with an external conductor of the incoming line; The base (10) further comprises an incoming line cover plate group (106) which is stacked and fixedly connected with the base body (101) along the direction d2; in the orthogonal projection of the base unit group along the direction d2, the external connection incoming line terminal (70) is shielded by the incoming line cover plate group (106).

14. The plug base of claim 13, wherein: In the base unit, the incoming line switch position (12) is arranged closer to the ammeter position (11) than the outgoing line switch position (13) along the direction d3; the fifth copper bar middle section (1502) passes through the outgoing line switch position (13) between adjacent incoming line switch positions (12); The plug-in base further comprises an intermediate wire arrangement plate group (108) which is stacked along direction d2 and fixedly matched with each base body (101); in the projection direction of the plug-in base, the fifth copper bar intermediate section (1502) is shielded by the intermediate wire arrangement plate group (108), and the external connection incoming line terminal (70) is shielded by the corresponding incoming line cover plate group (106); In the base unit group, the base body (101), the intermediate wire arrangement plate group (108) and the first wire arrangement cover plate (102) cooperatively form an incoming line switch cavity for the incoming line switch (920) to be inserted thereinto along direction d2.

15. The plug base of claim 13, wherein: In the base unit, the incoming line switch position (12) and the outgoing line switch position (13) are arranged side by side; in the direction d3, the fifth copper bar intermediate section (1502) passes through 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); the plug-in base further comprises an intermediate wire arrangement plate group (108) which is stacked along direction d2 and fixedly matched with each base body (101); in the projection direction of the plug-in base, the fifth copper bar intermediate section (1502) is shielded by the intermediate wire arrangement plate group (108).

16. The plug base of claim 15, wherein: The outgoing line positions (16) of each base unit are arranged side by side along 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 intermediate section (1502) are respectively located on both sides of the intermediate wire arrangement plate group (108) along direction d2; the incoming line position (15) is arranged away from the electric meter position (11) relative to the outgoing line position (16) along direction d3.

17. The plug base of claim 6, wherein: The base (10) comprises an incoming line switch avoiding notch (9211); in the base unit, the incoming line switch avoiding notch (9211) and the outgoing line switch position (13) are sequentially arranged along direction d1, and the incoming line side second connecting terminal (32) is located in the incoming line switch avoiding notch (9211).

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