Withstand voltage test device of electric energy meter

Abstract

The utility model relates to a withstand voltage test device of an electric energy meter, which comprises a withstand voltage tester bin and an electric energy meter bin arranged on the upper side of the withstand voltage tester bin, clamping assemblies are arranged on the bottom surfaces of inner cavities of the withstand voltage tester bin and the electric energy meter bin, and a cabling rack used for arranging wire harnesses is arranged on the top surface of the inner cavity of the withstand voltage tester bin. And a bunching assembly which is opened and closed in a pressing manner is arranged on the cabling rack. According to the device, the withstand voltage tester can be well protected, wire harnesses can be conveniently collected so that the device can be conveniently transferred, the clamping assembly can clamp or loosen the electric energy meter and the withstand voltage tester so that accidents caused by displacement can be prevented, and the electric energy meter bin can provide a safe environment for tests.

Description

Technical Field

[0001] The utility model relates to the technical field of withstand voltage testing, in particular to a withstand voltage testing device for an electric energy meter. Background Art

[0002] The withstand voltage test is a process for testing the insulation performance of an electric energy meter. Through the withstand voltage test of the electric energy meter, local defects, moisture absorption and aging of its insulation can be detected. Generally, a high voltage of 4 kV is used for one minute in the withstand voltage test of the electric energy meter. When performing the withstand voltage test on the electric energy meter at a non-professional test site such as outdoors, a portable withstand voltage tester is required. However, many problems will be faced during the use of the portable withstand voltage tester, such as the anti-collision and dust-proof problems of the withstand voltage tester, the arrangement and storage problems of the relevant wire harnesses of the withstand voltage tester, the problem of fixing the electric energy meter during the test process, the safety protection problem for the human body during the test process, etc. Therefore, there is an urgent need for a withstand voltage testing device for an electric energy meter that can solve some or all of the above problems. Content of the Utility Model

[0003] The purpose of the utility model is to provide a withstand voltage testing device for an electric energy meter to solve the above problems existing in the prior art.

[0004] To solve the above problems, the utility model provides a withstand voltage testing device for an electric energy meter, which includes a withstand voltage tester bin and an electric energy meter bin arranged on the upper side of the withstand voltage tester bin. Clamping components are arranged on the inner bottom surfaces of both the withstand voltage tester bin and the electric energy meter bin. A wire routing rack for arranging wire harnesses is provided on the inner top surface of the withstand voltage tester bin, and a wire harness clamping component with a push-button opening and closing structure is arranged on the wire routing rack.

[0005] The withstand voltage testing device for an electric energy meter provided by the utility model also has the following technical features:

[0006] Further, an air intake and filtration bin, a wire harness bin and a battery bin are also arranged on the upper side of the withstand voltage tester bin. An air intake grille, a filter element and a fan are fixedly arranged in sequence from top to bottom in the air intake and filtration bin, and an air intake hole communicating with the inner cavity of the withstand voltage tester bin is arranged below the fan.

[0007] Further, the front cover of the withstand voltage tester bin is openable, and an observation glass is arranged on the front cover. Heat dissipation holes are arranged on the left and right side walls of the withstand voltage tester bin, a line adapter is arranged on the rear side wall of the withstand voltage tester bin, and a wire mesh pocket for collecting redundant wire harnesses is arranged on the inner top surface of the withstand voltage tester bin.

[0008] Further, the upper cover of the electric energy meter bin is openable, an explosion-proof glass is arranged on the upper cover, and the explosion-proof glass is also arranged on the front wall of the electric energy meter bin.

[0009] Furthermore, the clamping assembly includes a mounting frame, a screw, a handwheel and a movable frame. The mounting frame is fixedly arranged at the angle between the bottom surface and the rear side surface of the inner cavity of the pressure tester compartment and the electric energy meter compartment. The screw can be rotatably inserted into the screw cavity in the mounting frame. The side surfaces of the screw near both ends are provided with symmetrical thread lines. One end of the screw is provided with the handwheel, and one end of the movable frame is provided with a movable block. The movable block is provided with a threaded hole matching the thread line, and the movable block can slide horizontally in a slide groove provided on the mounting frame.

[0010] Furthermore, one end of the screw rod is provided with prism 1 and prism 2, the radial cross-sectional area of ​​prism 2 is larger than the radial cross-sectional area of ​​prism 1, and the shapes of the radial cross-sections of the two are consistent; the handwheel includes a handwheel cover, prism tube 1 and prism tube 2, prism 1 can be slidably embedded in the inner cavity of prism tube 1, prism 2 can be slidably embedded in the inner cavity of prism tube 2, prism tube 1 can be slidably embedded in the locking hole provided on the side wall of the pressure tester chamber, and the outer surface of prism tube 2 is provided with anti-slip threads.

[0011] Furthermore, buffers are fixedly provided at the locations of the mounting frame and the movable frame that are in contact with the withstand voltage tester or the electric energy meter.

[0012] Furthermore, there is a wiring channel inside the wiring rack, and the wiring rack is arranged in an "I" shape on the top surface of the inner cavity of the voltage tester compartment; among the two intersection points of the "I" shape, the intersection close to the front end is provided with a wiring harness through hole connecting the voltage tester compartment and the electric energy meter compartment, and a dustproof wiring cover is fixed on the wiring harness through hole.

[0013] Furthermore, a wiring rack and a matching wiring assembly are also provided at the front end of the bottom surface of the inner cavity of the electric energy meter compartment near the dustproof wiring cover.

[0014] Furthermore, a wiring harness assembly is used to constrain the wiring harness of the wiring rack, and the wiring harness assembly includes a locking pin, a sliding base and a push-type locking base; the sliding base and the locking base are fixedly arranged in an installation groove provided on the wiring rack, and a pressing block and a locking groove are respectively provided at both ends of the locking pin, a spring is provided between the pressing block and the sliding base, and the locking groove cooperates with the push-type locking base to perform locking or unlocking operations.

[0015] The utility model has the following beneficial effects:

[0016] 1. The clamping components in the withstand voltage tester can provide good protection for the withstand voltage tester when the device is not undergoing the withstand voltage test and needs to be moved, preventing the withstand voltage tester from being damaged by bumps;

[0017] 2. After the withstand voltage tester is clamped in place by the clamping assembly in the withstand voltage tester compartment, its connecting wire harness can be arranged in the wire rack and restricted by the wire bundling assembly. The power cord and the ground wire are also arranged in the withstand voltage tester compartment through the line adapter and can be connected to the outside of the compartment. Moreover, the redundant wire harness can be bundled into the net bag. The layout of the overall circuit is neat and beautiful, which will not hinder the movement of the device and is convenient for outdoor operations.

[0018] 3. When a withstand voltage test needs to be carried out, the clamping assembly in the electric energy meter compartment can clamp or loosen the electric energy meter, which is convenient for putting in and taking out the electric energy meter, and can also prevent the electric energy meter from displacing during the withstand voltage test to cause accidents.

[0019] 4. The clamping assembly is convenient and fast to use, and has a simple and reliable structure.

[0020] 5. During the withstand voltage test, the electric energy meter compartment can provide a safe environment for the test, prevent high-voltage electricity from hurting people during the withstand voltage test, and at the same time, the test results can be clearly observed through the explosion-proof glass.

[0021] 6. The air intake filter compartment can also provide clean cooling air for the withstand voltage tester, extending the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is the overall structural schematic diagram of the present utility model;

[0023] Figure 2 is the front view of the overall structure of the present utility model;

[0024] Figure 3 is Figure 2 the sectional view along the direction of line A-A in

[0025] Figure 4 is Figure 3 the detail view at B in

[0026] Figure 5 is the rear view of the overall structure of the present utility model;

[0027] Figure 6 is Figure 5 the detail view at C in

[0028] Figure 7 is the structural schematic diagram of the clamping assembly of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The present utility model will be described in detail below with reference to the drawings and in conjunction with the embodiments. It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0030] As Figures 1 to 7In the embodiment of the withstand voltage test device for the electric energy meter of the present utility model shown, the withstand voltage test device for the electric energy meter includes a withstand voltage tester bin 1 and an electric energy meter bin 2 provided on the upper right side of the withstand voltage tester bin 1. Clamping assemblies 3 are provided on the inner bottom surfaces of both the withstand voltage tester bin 1 and the electric energy meter bin 2. The clamping assemblies 3 are used to clamp the withstand voltage tester or the electric energy meter. On the inner top surface of the withstand voltage tester bin 1, there is a wire routing rack 4 for arranging wire harnesses. The wire routing rack 4 is used to arrange the wire harnesses between the withstand voltage tester and the electric energy meter, as well as the power supply wire and the grounding wire on the withstand voltage tester. On the wire routing rack 4, there is a wire harness constraining assembly 5 with a push-button opening and closing structure, and the wire harness constraining assembly 5 is used to constrain the wire harnesses arranged in the wire routing rack 4. The device also includes an air intake and filtration bin 6, a wire harness bin 7, and a battery bin 8 provided on the upper left side of the withstand voltage tester bin 1. From top to bottom, the air intake and filtration bin 6 is fixedly provided with an air intake grille 61, a filter element, and a fan. Below the fan, there is an air intake hole 62 (as shown in Figure 3 ) communicating with the inner cavity of the withstand voltage tester bin 1. The air intake and filtration bin 6 can effectively dissipate heat for the withstand voltage tester in the withstand voltage tester bin 1 and has a dust-proof function; the wire harness bin 7 is provided with an openable upper cover, and the wire harness bin 7 can store the power supply wire, the grounding wire, or other objects when the device is not in use; the battery in the battery bin 8 provides power for relevant components (such as the fan) of the device.

[0031] In an embodiment of the present application, preferably, as shown in Figures 1 to 6 , the front cover of the withstand voltage tester bin 1 is openable and there is an observation glass 14 on the front cover. When the front cover is opened, it is convenient to operate the operation panel on the front panel of the withstand voltage tester. When the front cover is closed, the data on the display and the operation panel on the front panel can also be observed through the observation glass 14; heat dissipation holes 15 are provided on the left and right side walls of the withstand voltage tester bin 1, and the heat dissipation holes 15 cooperate with the fan in the air intake and filtration bin 6 to dissipate heat for the withstand voltage tester; a line adapter 11 is provided on the rear side wall of the withstand voltage tester bin 1. The power supply wire and the grounding wire of the withstand voltage tester can be inserted into the jacks of the power converter 11 from inside the withstand voltage tester bin (such as on the inner wall shown in Figure 2 ), and then another set of matching power supply wire and grounding wire is inserted on the other side of the power converter 11 (such as on the outer wall shown in Figure 5 ); the matching power supply wire and grounding wire can be placed in the wire harness bin 7 when not in use, which is convenient for transferring the device when the device is not in use; the line adapter 11 also obtains the required power from the battery in the battery bin 8; a net pocket 12 for collecting excess wire harnesses is provided on the inner top surface of the withstand voltage tester bin 1, and the net pocket 12 can collect the power supply wire and the connecting wire with too long length.

[0032] In an embodiment of the present application, preferably, as shown in Figures 1 to 3As shown, the upper cover of the watt-hour meter bin 2 is openable and closable, and an explosion-proof glass 21 is provided on the upper cover. An explosion-proof glass 21 is also provided on the front wall of the watt-hour meter bin 2. The opening and closing of the upper cover facilitate the insertion and removal of the watt-hour meter. The explosion-proof glass 21 on the upper cover and the front cover facilitates the observation of experimental results on the one hand and prevents accidental injuries to the human body during the test on the other hand.

[0033] In an embodiment of the present application, preferably, as shown in FIG. 7, a set of clamping components 3 are respectively provided for the withstand voltage tester bin 1 and the watt-hour meter bin 2. The clamping component 3 includes a mounting bracket 31, a lead screw 32, a hand wheel 33 and two moving brackets 34. The mounting bracket 31 is fixedly arranged at the angle between the bottom surface and the rear side surface of the inner cavity of the withstand voltage tester bin 1 and the watt-hour meter bin 2. The lengths of the two sets of mounting brackets 31 are respectively the same as the left-right widths of the withstand voltage tester bin 1 and the watt-hour meter bin 2. The lead screw 32 is rotatably arranged in a lead screw cavity 312 in the mounting bracket 31. Bearings are provided at both ends of the lead screw cavity 312 for connecting the lead screw 32. One end of the bearing is connected to the side surface of the end of the lead screw 32, and the other end of the bearing is connected to the side surface of the lead screw near the end. Two symmetrically arranged thread lines 321 are respectively provided on the side surfaces of the lead screw 32 near both ends, inside the connection part with the bearing. One end of the lead screw 32 outside the connection with the bearing is connected to a hand wheel 33. The hand wheel 33 can drive the lead screw 32 to rotate and can lock the rotation of the lead screw 32. One end of the moving bracket 34 is fixedly provided with a moving block 341. A threaded hole matching the thread line 321 is provided on the moving block 341. The moving block 341 can horizontally slide in a chute 311 provided on the mounting bracket 31. When the lead screw 32 is driven by the hand wheel 33 to rotate, the thread line 321 on the lead screw 32 drives the moving block 341 to horizontally slide in the chute 311, and the moving bracket 34 slides horizontally synchronously with the moving block 341, so as to realize the clamping function.

[0034] In an embodiment of the present application, preferably, as shown in FIG. 7, one end of the lead screw 32 is provided with a first prism 322 and a second prism 323. The area of the radial cross-section of the second prism 323 is larger than that of the first prism 322, and the shapes of their radial cross-sections are the same; the length of the second prism 323 is less than that of the first prism 322; both the first prism 322 and the second prism 323 are hexagonal prisms; the handwheel 33 includes a handwheel cover 331, a first hexagonal tube 332, and a second hexagonal tube 333; wherein the first hexagonal tube 332 is an internal and external hexagonal tube, and the second hexagonal tube 332 is a hexagonal tube with an outer circle and an inner hexagon; the lengths of the first hexagonal tube 332 and the second hexagonal tube 333 are the same, and the sum of their lengths is equal to the sum of the lengths of the first prism 322 and the second prism 323; the first prism 322 can be slidably inserted into the inner cavity of the first hexagonal tube 332, the second prism 323 can be slidably inserted into the inner cavity of the second hexagonal tube 333, the first hexagonal tube 332 can be slidably inserted into the locking hole 16 provided on the side wall of the pressure tester chamber 1. The locking hole 16 is a hexagonal columnar hole and has the same shape and size as the outer hexagonal prism of the first hexagonal tube 332; the outer surface (i.e., the surface of the outer circle) of the second hexagonal tube 333 is provided with anti-slip threads; the lead screw 32 can pass through the handwheel 33 until the second prism 323 is inserted into the second hexagonal tube 333; buffer members 35 are fixedly provided at the parts of the mounting frame 31 and the moving frame 34 that contact the pressure tester or the electric energy meter. The buffer 35 can prevent the clamped equipment from being scratched and can also prevent the clamped equipment from being damaged due to excessive force when using the clamping assembly 3.

[0035] When the clamping assembly 3 needs to be used, take out the first hexagonal tube 332 of the handwheel 33 from the locking hole 16. At this time, the handwheel 33 can be freely rotated to drive the lead screw 32 to rotate (the first hexagonal tube 332 drives the first prism 322, and the second hexagonal tube 333 drives the second prism 323). When the lead screw 32 rotates, the moving frame 34 will slide in the horizontal direction to achieve the functions of clamping or loosening; when the moving frame 34 slides to the required position, slide the first hexagonal tube 332 of the handwheel 33 into the locking hole 16 to lock the lead screw 32; during the process of sliding the handwheel 33 into or out, the inner surface of the first hexagonal tube 332 always slides on the outer surface of the first prism 322, and the outer surface of the second prism 323 always slides on the inner surface of the second hexagonal tube 333.

[0036] In an embodiment of the present application, preferably, as Figures 3 to 6 shown, the inside of the wire rack 4 is a wire routing channel. The wire rack 4 is arranged in an "I" shape on the top surface of the inner cavity of the pressure tester chamber 1 (as Figure 3As shown); the two horizontal lines of the "工" shape are respectively close to the front cover and the rear wall of the withstand voltage tester compartment 1, which can cope with the two situations that the wiring harness jack of the withstand voltage tester is set on its front panel or the rear panel; of the two intersections of the "工" shape, the intersection close to the front end is provided with a wiring harness through hole connecting the withstand voltage tester compartment 1 and the electric energy meter compartment 2, and the intersection is a T-shaped channel, and a dustproof harness cover 13 is fixed on the harness through hole arranged in the T-shaped channel, and the inner circle of the dustproof harness cover 13 is surrounded by a plurality of fan-shaped rubber strips 131 to form a circle (as shown Figure 6 As shown in the figure); the other intersection of the “工” shape is a cross channel (as shown in the figure); Figure 4 As shown), the setting of the cross channel can facilitate the connection of the power cord of the withstand voltage tester to the line adapter 11.

[0037] In one embodiment of the present application, preferably, Figure 3 , Figure 4 As shown, the wiring harness assembly 5 is used to constrain the wiring harness in the wiring rack 4, and the wiring harness assembly 5 includes a locking pin 51, a sliding base 52 and a push-type locking base 53; the sliding base 52 and the locking base 53 are fixedly arranged in the mounting groove provided on the wiring rack 4, and the locking pin 51 can be slidably penetrated in the sliding base 52; a pressing block 511 and a locking groove 512 are respectively provided at both ends of the locking pin 51; the pressing block 511 on the locking pin 51 arranged front and back always faces the front cover of the withstand voltage tester compartment 1, which is convenient for manual pressing; a spring is provided between the pressing block 511 and the sliding base 52, and the spring is sleeved on the side surface of the locking pin 41; the locking groove 512 cooperates with the push-type locking base 53 to perform locking or unlocking operations, specifically, pressing the locking pin 51 in the direction of the locking groove 512 is locking, and pressing it again is unlocking; the internal structure of the push-type locking base 53 is the prior art and will not be repeated here.

[0038] In one embodiment of the present application, preferably, Figure 6 As shown, a wiring rack 4 and a matching wiring harness assembly 5 are also provided at the front end of the bottom surface of the inner cavity of the electric energy meter compartment 2 near the dustproof wiring harness cover 13, which are used to constrain the wiring harness connected from the withstand voltage tester compartment 1 to the electric energy meter compartment 2.

[0039] In this device, after the withstand voltage tester and the electricity meter are respectively placed in the withstand voltage tester bin 1 and the electricity meter bin 2, the clamping assembly 3 can be used to clamp or loosen the withstand voltage tester and the electricity meter, preventing displacement of the withstand voltage tester and the electricity meter during the withstand voltage test to avoid accidents. Moreover, when the device is not undergoing a withstand voltage test and needs to be moved, the clamping assembly 3 can also provide good protection for the withstand voltage tester to prevent it from being damaged by bumping. At the same time, after the withstand voltage tester is clamped in place by the clamping assembly 3 in the withstand voltage tester bin 1, its connecting wire harness can be arranged in the wire rack 4 and be restricted by the wire bundling assembly 5. The power cord is also arranged in the withstand voltage tester bin 1 through the line adapter 11, and the redundant wire harness can be bundled into the mesh bag 12. The layout of the overall circuit is neat and beautiful, without interfering with the movement of the device and facilitating outdoor operations. During the withstand voltage test, the electricity meter bin 2 can provide a safe environment for the test, preventing high-voltage electricity from harming the human body during the withstand voltage test. At the same time, the test results can also be clearly observed through the explosion-proof glass 21. The air intake and filtration bin 6 can also provide clean cooling air for the withstand voltage tester, extending the service life of the device.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. And these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A withstand voltage test device for an electric energy meter, characterized in that: The invention comprises a withstand voltage tester compartment (1) and an electric energy meter compartment (2) arranged on the upper side of the withstand voltage tester compartment (1), wherein the bottom surfaces of the inner cavities of the withstand voltage tester compartment (1) and the electric energy meter compartment (2) are both provided with a clamping assembly (3), and the top surface of the inner cavity of the withstand voltage tester compartment (1) is provided with a wiring rack (4) for arranging a wiring harness, and the wiring rack (4) is provided with a push-type opening and closing wiring harness assembly (5); the clamping assembly (3) comprises a mounting frame (31), a screw rod (32), and a mounting bracket (33). 2), a hand wheel (33) and a movable frame (34), the mounting frame (31) being fixedly arranged at the angle between the bottom surface and the rear side surface of the inner cavity of the withstand voltage tester compartment (1) and the electric energy meter compartment (2), the screw rod (32) being rotatably arranged in a screw rod cavity (312) in the mounting frame (31), the side surfaces of the screw rod (32) close to both ends being provided with symmetrical thread lines (321), and one end of the screw rod (32) being provided with the hand wheel (33). The movable frame (34) comprises a wheel (33), a movable block (341) is provided at one end of the movable frame (34), a threaded hole is provided on the movable block (341) and matches the threaded line (321), and the movable block (341) can slide horizontally in a slide groove (311) provided on the mounting frame (31); the wire harness assembly (5) is used to constrain the wire harness of the wiring rack (4), and the wire harness assembly (5) comprises a locking pin (51), a sliding base (52) and a pressing locking base (53); the sliding base (52) and the locking base (53) are fixedly arranged in the mounting groove provided on the wiring rack (4), a pressing block (511) and a locking groove (512) are provided at both ends of the locking pin (51), a spring is provided between the pressing block (511) and the sliding base (52), and the locking groove (512) cooperates with the locking base (53) to perform a locking or unlocking operation.

2. The withstand voltage test device for electric energy meter according to claim 1, characterized in that: It also comprises an air intake filter compartment (6), a wiring harness compartment (7) and a battery compartment (8) arranged on the upper side of the withstand voltage tester compartment (1); the air intake filter compartment (6) is fixedly provided with an air intake grille (61), a filter element and a fan in sequence from top to bottom; and an air intake hole (62) communicating with the inner cavity of the withstand voltage tester compartment (1) is provided on the lower side of the fan.

3. The withstand voltage test device for electric energy meter according to claim 1, characterized in that: The front cover of the withstand voltage tester compartment (1) can be opened and closed and is provided with an observation glass (14), the left and right side walls of the withstand voltage tester compartment (1) are provided with heat dissipation holes (15), the rear side wall of the withstand voltage tester compartment (1) is provided with a line adapter (11), and the top surface of the inner cavity of the withstand voltage tester compartment (1) is provided with a net bag (12) for collecting excess wire harnesses.

4. The withstand voltage test device for electric energy meter according to claim 1, characterized in that: The upper cover of the electric energy meter compartment (2) can be opened and closed, and explosion-proof glass (21) is provided on the upper cover; the front wall of the electric energy meter compartment (2) is also provided with the explosion-proof glass (21).

5. The withstand voltage test device for electric energy meter according to claim 1, characterized in that: One end of the screw rod (32) is provided with a prism 1 (322) and a prism 2 (323); the area of ​​the radial cross section of the prism 2 (323) is larger than the area of ​​the radial cross section of the prism 1 (322), and the shapes of the radial cross sections of the two are consistent; the hand wheel (33) comprises a hand wheel cover (331), a prism tube 1 (332) and a prism tube 2 (333); the prism 1 (322) can be slidably embedded in the inner cavity of the prism tube 1 (332); the prism 2 (323) can be slidably embedded in the inner cavity of the prism tube 2 (333); the prism tube 1 (332) can be slidably embedded in a locking hole (16) provided on the side wall of the pressure tester chamber (1); and the outer surface of the prism tube 2 (333) is provided with an anti-slip thread.

6. The withstand voltage test device for electric energy meter according to claim 1, characterized in that: A buffer (35) is fixedly provided at the locations of the mounting frame (31) and the movable frame (34) that are in contact with the withstand voltage tester or the electric energy meter.

7. The withstand voltage test device for electric energy meter according to claim 1, characterized in that: The wiring rack (4) contains a wiring channel, and the wiring rack (4) is arranged in the shape of an "I" on the top surface of the inner cavity of the withstand voltage tester compartment (1); of the two intersections of the "I" shape, the intersection close to the front end is provided with a wiring harness through hole connecting the withstand voltage tester compartment (1) and the electric energy meter compartment (2), and a dustproof harness cover (13) is fixedly provided on the wiring harness through hole.

8. The withstand voltage test device for electric energy meter according to claim 7, characterized in that: The wiring rack (4) and the wiring harness assembly (5) are also provided at the front end of the bottom surface of the inner cavity of the electric energy meter compartment (2) near the dustproof wiring harness cover (13).

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