A combined wiring device, junction box and wiring method for electricity metering

Abstract

This invention discloses a combined wiring device, junction box, and wiring method for electricity metering, belonging to the technical field of power distribution equipment. The combined wiring device for electricity metering includes a first conductor, a conductive plate, a second conductor, a third conductor, and insulating fasteners. The principle is that the two ends of the conductive plate are screwed to the first and third conductors respectively using insulating fasteners. When current needs to be connected, the insulating fasteners on the third conductor are loosened, allowing the third conductor to separate from the conductive plate. Simultaneously, the junction box can be safely operated after opening using a flip cover or through slot. Compared with existing technologies, it eliminates the need to manipulate the two current connecting plates, reducing operational steps and lowering the risk of safety problems caused by technician errors. Furthermore, the technical solution of this invention can effectively isolate the working voltage through the junction box cover when the working voltage is confirmed, ensuring operational safety and allowing for faster meter replacement, thus improving work efficiency.

Description

Technical Field

[0001] This invention relates to the field of power distribution equipment technology, specifically to a combined wiring device, junction box, and wiring method for power metering. Background Technology

[0002] Three-phase four-wire junction boxes are mainly suitable for power grid systems with a rated voltage of 380 volts and a power frequency of 50 Hz. They are used in conjunction with instrument transformers and metering devices to play a role in safety regulation and detection.

[0003] Among them, the commonly used electricity metering junction box is complicated to operate and prone to errors. When the staff replaces the meter, they need to first remove the two lead seals on the left and right, unscrew the screws of the two fixed cover plates, and use a screwdriver or needle-nose pliers to loosen and tighten the screws and move the connecting piece.

[0004] The entire operation requires changing seven connecting pieces on the junction box, and each connection is changed by using a screwdriver or needle-nose pliers with both hands. The process is complicated, and all the screws and connecting pieces are exposed, which can easily lead to electric shock. Especially when replacing a large number of meters, there is a high possibility of safety problems due to operational errors. Summary of the Invention

[0005] The purpose of this invention is to provide an electricity metering combined wiring device, junction box and wiring method to solve the technical problem of electric shock to workers caused by the cumbersome steps of replacing electricity meters in the prior art.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] This invention provides an integrated wiring device for electricity metering, comprising:

[0008] Terminal block, voltage assembly and current connection assembly, wherein the terminal block is movably embedded with three sets of current connection assemblies and three sets of voltage assemblies;

[0009] The current connection assembly includes a first conductor, a conductive sheet, a second conductor, a third conductor, and insulating fasteners. The terminal block is movably embedded with the first conductor, the second conductor, and the third conductor, which have the same structure. A conductive sheet is welded onto the second conductor. Two insulating fasteners are inserted at both ends of the conductive sheet. The two insulating fasteners are adapted to be screwed to the first conductor and the third conductor.

[0010] The solution shown in this application embodiment uses insulating fasteners to screw the two ends of the conductive sheet to the first conductor and the third conductor, respectively. When current is needed, the insulating fasteners on the third conductor are loosened, allowing the third conductor to separate from the conductive sheet. Compared with the prior art, there is no need to move the two current connecting pieces, reducing the number of operation steps and lowering the risk of safety problems caused by technician operation errors.

[0011] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0012] In conjunction with the first aspect, in one possible implementation, the first conductor includes:

[0013] The connecting column has a connecting hole at its axis and a pressure hole on its side that communicates with the connecting hole. A pressure bolt is screwed into the hole.

[0014] In conjunction with the first aspect, in one possible implementation, the voltage component includes:

[0015] Upper terminal; lower connecting post with the same structure as the upper terminal; and

[0016] Connecting bolts are used to screw the upper terminal and the lower connecting post together;

[0017] The upper terminal includes:

[0018] The voltage connector has a stepped end with a screw hole for screwing in a connecting bolt to connect the upper terminal and the lower terminal. The interface end of the voltage connector has a wiring hole that communicates with the wire clamping port on the side of the voltage connector.

[0019] In conjunction with the first aspect, in one possible implementation, the terminal block includes a mounting bracket, voltage component assembly slots, current component assembly slots, and grounding assembly slots. The front of the mounting bracket is provided with three current component assembly slots containing current connection components, three voltage component assembly slots containing voltage components, and one grounding assembly slot.

[0020] In conjunction with the first aspect, in one possible implementation, the current connection assembly further includes a limiting member and a first spring, a second spring, and a third spring. The second conductor has a limiting member at its bottom, which is arrow-shaped. The bottoms of the first, second, and third conductors are respectively provided with a first spring, a second spring, and a third spring. The length of the third spring is less than that of the first and second springs, and the lengths of the first and second springs are equal.

[0021] In conjunction with the first aspect, in one possible implementation, the wiring frame is provided with an arrow-shaped slot that cooperates with the limiting member.

[0022] The beneficial effect of the power metering joint wiring device provided by the present invention is that, compared with the prior art, it simplifies the operation process and steps of the power metering joint wiring device. It can achieve the technical effect of short-circuiting the current of the current transformer simply by loosening the insulating fasteners and separating the third conductor and the conductive plate. Since there are a large number of power meters that need to be replaced in the distribution cabinet, this technical solution can effectively reduce the workload of power distribution workers in replacing power meters and improve the safety of replacing power meters.

[0023] Secondly, embodiments of the present invention also provide a junction box that applies the power metering combined wiring device described above, comprising:

[0024] The box contains an internal electrical metering connection device;

[0025] The fixed column is integrally formed with the box body at its bottom end and is fitted with an electrical energy metering connection device; and

[0026] The lid has a flip-top or through-slot on the front and is screwed to the top of the fixing post on the back.

[0027] In conjunction with the second aspect, in one possible implementation, the lid is made of a transparent and insulating material.

[0028] In conjunction with the second aspect, in one possible implementation, a grounded light-emitting diode is provided on the housing.

[0029] The beneficial effects of the junction box provided by the present invention are as follows: Compared with the prior art, the technical solution of the present invention utilizes the flip cover or through groove provided on the box cover, which allows for safe operation of the junction box after opening, thereby facilitating the power frequency withstand voltage test on the junction box cover. Furthermore, under confirmed working voltage conditions, the box cover can effectively isolate the working voltage, ensuring working safety.

[0030] Thirdly, embodiments of the present invention also provide a wiring method, which applies the power metering combined wiring device as described above, and includes the following steps:

[0031] S1. Press the second conductor so that the limiting piece is inserted into the arrow-shaped slot and engages with the arrow-shaped slot. At this time, the first conductor and the third conductor are short-circuited to the current transformer installed on the three-phase power supply.

[0032] S2. Rotate the connecting bolt in the opposite direction to break the circuit between the upper and lower terminals, and then remove the electricity meter.

[0033] S3. After replacing the new energy meter, turn the connecting bolt forward to connect the voltage component, and then press the second conductor again to make the first conductor and the second conductor electrically connected.

[0034] The beneficial effect of the wiring method provided by the present invention is that the current of the current transformer can be shorted by repeatedly pressing the second conductor, which can replace the meter more quickly and improve work efficiency compared with the prior art. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 A perspective view of an energy metering combined wiring device provided in an embodiment of the present invention;

[0037] Figure 2 A schematic diagram of the structure of an electricity metering combined wiring device provided in an embodiment of the present invention. Figure 1 ;

[0038] Figure 3 A schematic diagram of the structure of an electricity metering combined wiring device provided in an embodiment of the present invention. Figure 2 ;

[0039] Figure 4 A perspective view of a junction box provided in an embodiment of the present invention;

[0040] Figure 5 A perspective view of the limiting component provided in an embodiment of the present invention;

[0041] Figure 6 This is a three-dimensional schematic diagram of the arrow-shaped slot provided in an embodiment of the present invention;

[0042] Figure 7 A perspective view of the wire frame provided in an embodiment of the present invention;

[0043] Figure 8 A perspective view of a voltage component provided in an embodiment of the present invention;

[0044] Figure 9 A perspective view of a current connection component provided in an embodiment of the present invention;

[0045] The labels for the attached figures are as follows:

[0046] 1. Wire frame; 11. Mounting bracket; 12. Voltage component assembly slot; 13. Current component assembly slot;

[0047] 14. Grounding assembly slot; 2. Voltage assembly; 21. Upper terminal block; 211. Screw hole; 212. Wire clamping port;

[0048] 213. Voltage connection block; 214. Wiring hole; 22. Lower connecting post; 23. Connecting bolt;

[0049] 3. Current connection assembly; 31. First conductor; 311. Connecting post; 312. Connecting hole;

[0050] 313. Wire clamping hole; 314. Wire clamping bolt; 32. Conductive sheet; 33. Second conductor;

[0051] 34. Third conductor; 35. Insulating fastener; 4. Arrow-shaped slot; 5. Limiting component;

[0052] 51. Pull rod; 52. Elastic clip; 6. First spring; 7. Second spring; 8. Third spring;

[0053] 101. Box body; 102. Fixing post; 103. Transparent box cover; 104. Box body fastening bolts. Detailed Implementation

[0054] To make the technical problems, technical solutions, and beneficial effects of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the described embodiments are only a part of the embodiments of this application, not all of them. The specific embodiments described herein are only used to explain the invention and are not intended to limit the invention. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0055] It should be further noted that the accompanying drawings and embodiments of the present invention mainly describe the concept of the present invention. Based on this concept, some specific forms and arrangements of connection relationships, positional relationships, power mechanisms, power supply systems, hydraulic systems and control systems may not be fully described. However, under the premise that those skilled in the art understand the concept of the present invention, they can implement the above-mentioned specific forms and arrangements in a well-known manner.

[0056] When a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0057] The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself. The terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0058] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways, and the spatial relative descriptions used herein will be interpreted accordingly.

[0059] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, and "a number" means one or more, unless otherwise explicitly specified.

[0060] The present invention will now describe an electrical energy metering connection device.

[0061] This invention discloses a combined wiring device for electricity metering, comprising:

[0062] The distribution cabinet includes a terminal block 1, voltage assembly 2, and current connection assembly 3. The terminal block 1 is embedded with three sets of current connection assemblies 3 and three sets of voltage assemblies 2. Within the distribution cabinet, the terminal block 1 contains three identical conductors: a first conductor 31, a second conductor 33, and a third conductor 34. A conductive plate 32 is welded to the second conductor 33, and two insulating fasteners 35 are inserted at each end of the conductive plate 32. These two insulating fasteners 35 are suitable for screwing onto the first conductor 31 and the third conductor 34. Since the electricity meter needs to measure the usage of electrical energy through a current transformer, and the current transformer cannot be open-circuited, otherwise it will be damaged. Therefore, in actual operation, before power is cut off, the current transformer needs to be short-circuited through the current connection assembly 3.

[0063] In this embodiment, as Figure 2 and Figure 3 Taking one phase of a three-phase power supply as an example, in use, the first conductor 31 and the third conductor 34 are connected via conductive sheet 32 ​​using insulating fastener 35, as shown in the reference. Figure 3 At this time, the second conductor 33 is in an open circuit state, while the first conductor 31, the third conductor 34 and the transformer form a circuit. At this time, disconnecting the voltage component 2 can effectively disconnect the circuit connection between the meter and the transformer.

[0064] In use, this invention only requires tightening the insulating fastener 35 to connect the third conductor 34 and the conductive plate 32 to achieve the effect of switching the current of the entire current connection assembly 3. Compared with the prior art, which uses a screwdriver to continuously turn the connecting plate to short-circuit the transformer, the power metering joint wiring device provided in this embodiment is more convenient than the prior art, and the connection stability is higher. It is convenient for electricians to continuously inspect and replace the meter, improving the work efficiency and safety of the staff.

[0065] In some possible embodiments, such as Figure 9 The first conductor 31 includes a connecting post 311, with an insulating fastener 35 threaded into the center of the connecting post 311 so that the connecting post 311 can be connected to the conductive sheet 32 ​​to conduct current. Connecting holes 312 are provided at both ends of the connecting post 311 for connecting wires. A wire clamping hole 313 is provided on the side of the connecting post 311 and communicates with the connecting hole 312. A wire clamping bolt 314 is inserted into the wire clamping hole 313 and threadedly connected to it. Thus, by the wire clamping bolt 314 abutting against the wire, the wire can be fixed inside the wire clamping hole 313, preventing problems such as open circuits or overheating due to poor wire contact.

[0066] Based on this embodiment, the present invention provides another specific embodiment as follows:

[0067] like Figure 8The voltage component 2 includes an upper terminal 21, a lower connecting post 22, and a connecting bolt 23. The lower connecting post 22 has the same structure as the upper terminal 21. By tightening the connecting bolt 23 to screw the upper terminal 21 and the lower connecting post 22 together, the upper terminal 21 and the lower connecting post 22 can be connected together, thereby enabling current conduction.

[0068] In this embodiment, the upper terminal 21 includes a screw hole 211, a wire clamping port 212, a voltage connection block 213, and a wiring hole 214. The stepped end of the voltage connection block 213 is provided with a screw hole 211, which is suitable for screwing in a connecting bolt 23. (Refer to...) Figure 8 Both the connecting bolt 23 and the wire clamping bolt 314 are of the same specification to reduce the difficulty of later maintenance. By rotating the connecting bolt 23, the stepped ends of the upper terminal 21 and the lower connecting terminal 22 can be brought together, thereby making the circuit conductive. Moreover, this connection method has higher structural stability compared with the prior art. The interface end of the voltage connection block 213 is provided with a wiring hole 214, which communicates with the wire clamping port 212. The wire clamping port 212 is located on the side of the voltage connection block 213, which is the same as the wiring method of the first conductor 31. The wire clamping bolt 314 is screwed into the wire clamping port 212 to fix the wire.

[0069] Based on this embodiment, the present invention provides another specific embodiment as follows:

[0070] The terminal block 1 includes a mounting frame 11, voltage component assembly slots 12, current component assembly slots 13, and grounding assembly slots 14. The front of the mounting frame 11 has three current component assembly slots 13 for current connection components 3, three voltage component assembly slots 12 for voltage components 2, and one grounding assembly slot 14. The three current component assembly slots 13 correspond to phases A, B, and C of the meter, respectively. In this embodiment, the terminal block 1 has an arrow-shaped slot 4 that cooperates with the limiting member 5. The arrow-shaped slot 4 cooperates with the limiting member 5.

[0071] The combination method is as follows:

[0072] like Figure 6 As shown, the limiting member 5 includes a pull rod 51 and an elastic locking head 52. The top end of the pull rod 51 is integrally connected to the second conductor 33, and the bottom end of the pull rod 51 is integrally formed with the elastic locking head 52. The elastic locking head 52 is arrow-shaped. When the pull rod 51 moves downward and inserts into the arrow-shaped slot 4, the elastic locking head 52 will first contract due to compression, and then unfold after entering the arrow-shaped slot 4. Thus, the arrow-shaped slot 4 will abut against the elastic locking head 52, thereby keeping the second spring 7 in a compressed state. Refer to... Figure 3When the lever 51 moves downward again, the elastic locking head 52 abuts against the bottom of the arrow-shaped locking groove 4, and the elastic locking head 52 will retract again. At this time, under the push of the second spring 7, refer to Figure 2 The elastic clip 52 can then be removed from the arrow-shaped slot 4, thereby achieving the purpose of short-circuiting the current transformer.

[0073] like Figure 5 and Figure 6 In this embodiment, a limiting member 5, shaped like an arrow, is provided at the bottom of the second conductor 33. A first spring 6, a second spring 7, and a third spring 8 are respectively provided at the bottom of the first conductor 31, the second conductor 33, and the third conductor 34. The second spring 7 supports the second conductor 33 to facilitate the release of the limiting member 5 from the arrow-shaped slot 4, while the length of the third spring 8 is less than that of the first spring 6 and the second spring 7. Figure 2 and Figure 3 By pressing the second conductor 33, the limiting member 5 is pushed out of the arrow-shaped slot 4, which allows the third conductor 34 to contact or separate from the conductive sheet 32. Since the lengths of the first spring 6 and the second spring 7 are equal, the first conductor 31 and the conductive sheet 32 ​​are always in contact with each other.

[0074] Therefore, as Figure 3 When the current transformer needs to be short-circuited, press down on the second conductor 33 to engage the limiting member 5 with the arrow-shaped slot 4. When the meter needs to be connected, press down on the second conductor 33 again to disengage the limiting member 5 from the arrow-shaped slot 4. Figure 2 As shown, this can further improve the circuit connection efficiency and facilitate the fixing of the conductive sheet 32 ​​by bolts.

[0075] The present invention will now describe a junction box.

[0076] This invention discloses a junction box, including a box body 101, a fixing post 102, and a box cover 103. An electricity metering connection device is installed inside the box body 101, such as... Figure 4 The bottom end of the fixing post 102 is integrally formed with the box body 101, thereby improving the structural strength of the entire junction box. The power metering connection device and the box cover 103 are equipped with flip-tops or through slots and are screwed to the top of the fixing post 102. This facilitates the replacement of the electricity meter using the power metering connection device. Furthermore, a temperature sensor is installed inside the box body 101. If poor contact occurs in the connection device, the temperature sensor can detect an increase in the temperature of the box body 101 in a timely manner, thus facilitating timely troubleshooting.

[0077] In this embodiment, the cover 103 is made of transparent insulating material to facilitate viewing the circuit connections inside the box 101. The cover 103 and the box 101 are connected by box-mounted bolts 104 using a combination of screws and lead seals to improve the sealing of the connection. A grounded LED is installed on the box 101, allowing observation of the usage status of the electricity metering wiring device through the cover 103. The LED also serves as a leakage current warning. Furthermore, the connecting bolts 23 and the wire clamping bolts 314 are of the same specification to reduce the difficulty of later maintenance.

[0078] Based on the same inventive concept, this application also provides a wiring method, which applies the power metering combined wiring device as described above, and includes the following steps:

[0079] S1. Press the second conductor 33 so that the limiting piece 5 is inserted into the arrow-shaped slot 4 and engaged with the arrow-shaped slot 4. At this time, the first conductor 31 and the third conductor 34 short-circuit the current transformer set on the three-phase power supply.

[0080] S2. Rotate the connecting bolt 23 in the opposite direction to break the circuit between the upper terminal 21 and the lower connecting terminal 22, and then remove the electricity meter;

[0081] S3. After replacing the new energy meter, rotate the connecting bolt 23 in the forward direction to connect the voltage component 2. Then, press the second conductor 33 again to make the first conductor 31 and the second conductor 33 electrically connected.

[0082] In this embodiment, the limiting member 5 cooperates with the arrow-shaped slot 4 to allow the second conductor 33 to move the conductive sheet 32 ​​relative to the first conductor 31 and the third conductor 34, thereby enabling the conductive sheet 32 ​​to contact or separate from the third conductor 34. Furthermore, bolts can be used to fix the conductive sheet 32 ​​to the first conductor 31. Compared with the prior art, this can effectively simplify the wiring steps and reduce the probability of wiring errors.

[0083] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0084] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0085] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

Claims

1. A combined wiring device for electricity metering, characterized in that, It includes a terminal block (1), a voltage assembly (2) and a current connection assembly (3), wherein the terminal block (1) is embedded with three sets of current connection assemblies (3) and three sets of voltage assemblies (2); The current connection assembly (3) includes a first conductor (31), a conductive sheet (32), a second conductor (33), a third conductor (34), and an insulating fastener (35). The first conductor (31), the second conductor (33), and the third conductor (34) are sequentially embedded in the terminal frame (1). The conductive sheet (32) is welded onto the second conductor (33). Two insulating fasteners (35) are screwed into both ends of the conductive sheet (32). The two insulating fasteners (35) are suitable for screwing into the first conductor (31) and the third conductor (34). The current connection assembly (3) further includes a limiting member (5) and a first spring (6), a second spring (7) and a third spring (8). The second conductor (33) is provided with a limiting member (5) at its bottom, which is arrow-shaped. The bottoms of the first conductor (31), the second conductor (33) and the third conductor (34) are respectively provided with a first spring (6), a second spring (7) and a third spring (8). The length of the third spring (8) is less than that of the first spring (6) and the second spring (7). The lengths of the first spring (6) and the second spring (7) are equal. The wiring frame (1) is provided with an arrow-shaped slot (4) that cooperates with the limiting member (5). The arrow-shaped slot (4) cooperates with the limiting member (5). The limiting component (5) includes a pull rod (51) and an elastic locking head (52). The top end of the pull rod (51) is integrally connected to the second conductor (33), and the bottom end of the pull rod (51) is integrally formed with the elastic locking head (52). The elastic locking head (52) is arrow-shaped. When the pull rod (51) moves downward and inserts into the arrow-shaped slot (4), the elastic locking head (52) will first contract due to compression, and then unfold after entering the arrow-shaped slot (4). The arrow-shaped slot (4) will abut against the elastic head (52), thereby putting the second spring (7) in a compressed state; when the pull rod (51) moves downward again, the elastic head (52) abuts against the bottom of the arrow-shaped slot (4), and the elastic head (52) will retract again. At this time, under the push of the second spring (7), the elastic head (52) can be disengaged from the arrow-shaped slot (4), thereby achieving the purpose of short-circuiting the current transformer.

2. The combined wiring device for electricity metering as described in claim 1, characterized in that, The first conductor (31) includes: Connecting post (311), with the central thread screwed into an insulating fastener (35); Connecting holes (312) are provided at both ends of the connecting post (311); A wire-pressing hole (313) is provided on the side of the connecting post (311) and communicates with the connecting hole (312); and The wire clamping bolt (314) is threaded into the wire clamping hole (313).

3. The combined wiring device for electricity metering as described in claim 1, characterized in that, The voltage component (2) includes: Upper terminal (21); The lower connecting post (22) has the same structure as the upper connecting post (21); and Connecting bolt (23) is used to screw the upper terminal (21) and the lower connecting post (22). The upper terminal (21) includes a screw hole (211), a wire clamping port (212), a voltage connection block (213), and a wiring hole (214). The stepped end of the voltage connection block (213) is provided with a screw hole (211), which is suitable for screwing in a connecting bolt (23) to connect the upper terminal (21) and the lower connection block (22). The interface end of the voltage connection block (213) is provided with a wiring hole (214), which communicates with the wire clamping port (212). The wire clamping port (212) is located on the side of the voltage connection block (213).

4. The combined wiring device for electricity metering as described in claim 1, characterized in that, The wiring frame (1) includes a mounting frame (11), a voltage component assembly slot (12), a current component assembly slot (13), and a grounding assembly slot (14). The mounting frame (11) has three current component assembly slots (13), three voltage component assembly slots (12), and one grounding assembly slot (14) on its front side.

5. A junction box comprising the power metering combined wiring device as described in any one of claims 1-4, characterized in that, include: The box (101) is equipped with an electrical energy metering connection device. The fixed post (102) is integrally formed with the box body (101) at its bottom end and is inserted into the power metering joint wiring device; and The lid (103) has a flip cover or through groove on the front and is screwed to the top of the fixing post (102) on the back.

6. A junction box as described in claim 5, characterized in that, The lid (103) is made of transparent insulating material.

7. A junction box as described in claim 6, characterized in that, A grounded light-emitting diode is provided on the box (101).

8. A wiring method, comprising the power metering combined wiring device as described in claim 1, characterized in that, Includes the following steps: S1. Press the second conductor (33) so that the limiting piece (5) is inserted into the arrow-shaped slot (4) and engaged with the arrow-shaped slot (4). At this time, the first conductor (31) and the third conductor (34) short-circuit the transformer installed on the three-phase power supply. S2. Rotate the connecting bolt (23) in the opposite direction to break the circuit between the upper terminal (21) and the lower connecting terminal (22), and then remove the energy meter; S3. After replacing the new energy meter, rotate the connecting bolt (23) in the forward direction to connect the voltage component (2), and then press the second conductor (33) again to make the first conductor (31) and the second conductor (33) electrically connected.

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