Medium-voltage cabinet and transformer cabinet assembly

By adopting the copper-barrel technology for connecting the cabinets, the problems of low efficiency and high cost of connection between the medium-voltage cabinet and the transformer cabinet are solved, and the effects of rapid connection, cost saving and improved heat dissipation performance are achieved.

CN222441111UActive Publication Date: 2025-02-07EMERSON NETWORK POWER CO LTD
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Patent Information

Application Number
CN202323507360.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2023-12-21
Publication Date
2025-02-07
Estimated Expiration
2033-12-21

AI Technical Summary

Technical Problem

The connection method between the existing medium-voltage cabinet and the transformer cabinet is time-consuming, low efficiency and high cost.

Method used

The copper bar is connected to the parallel cabinet, and the medium voltage cabinet and the transformer cabinet are connected quickly through the parallel cabinet, replacing the traditional cable connection.

Benefits of technology

It realizes the rapid connection between the medium voltage cabinet and the transformer cabinet, significantly saves installation time, reduces installation costs, and improves heat dissipation performance, avoiding the safety risks brought about by cable aging.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The utility model discloses a medium-voltage cabinet and transformer cabinet assembly, and the assembly comprises a medium-voltage cabinet which comprises a medium-voltage frame and a medium-voltage leading-out terminal copper bar, and the medium-voltage leading-out terminal copper bar is disposed in the medium-voltage frame; the transformer cabinet comprises a transformation frame and a transformation leading-out terminal copper bar, and the transformation leading-out terminal copper bar is installed in the transformation frame; the cabinet combination connecting copper bar comprises a medium-voltage connecting copper bar and a transformation connecting copper bar, and the medium-voltage connecting copper bar is connected with the medium-voltage leading-out terminal copper bar; the transformation connection copper bar is connected with the transformation leading-out terminal copper bar; the medium-voltage frame and the transformation frame are arranged in parallel, and the medium-voltage connection copper bar and the transformation connection copper bar are detachably connected together. According to the utility model, the medium-voltage cabinet and the transformer cabinet are installed adjacently, and cable connection between the medium-voltage cabinet and the transformer cabinet is changed into cabinet combination connection copper bar connection, so that the problems of low efficiency and high cost of cable connection are solved; the heat dissipation performance of the combined cabinet connecting copper bar is better than that of a cable, so that the problem of temperature rise of connection in the cabinet can be well solved.
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Description

Technical Field

[0001] The utility model belongs to the technical field of power distribution, and in particular relates to a medium voltage cabinet and a transformer cabinet component. Background Art

[0002] The APT system (Advanced Package Tool) is a comprehensive power system that requires various parts to work together to achieve safe, stable and efficient operation of the power system. The APT system mainly includes medium-voltage cabinets, transformer cabinets, etc. Among them, the medium-voltage cabinet is mainly used for high-voltage power distribution, introducing high-voltage power into the system, and performing voltage conversion and power distribution; the transformer cabinet is used to convert the high-voltage power into a low voltage suitable for load use, so as to provide it to various load devices.

[0003] Currently, the medium voltage cabinet and transformer cabinet in the market are installed separately and then connected together by cables. After the medium voltage cabinet and transformer cabinet are positioned and installed, the construction personnel will actually measure the cable length on site, make the terminal cable head (it takes about 5 hours to make the terminal cable heads at both ends), and connect the transformer cabinet and the medium voltage cabinet together through the terminal cable head and cable. The medium voltage cabinet and the transformer cabinet are installed one meter apart. According to the market quotation of 120 square high-voltage cable for 2000KVA transformer, the connection fee is about 7,000 yuan. This connection method between the medium voltage cabinet and the transformer cabinet in the prior art has the disadvantages of being time-consuming, inefficient and costly. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a medium voltage cabinet and transformer cabinet component which is convenient for fast cabinet connection.

[0005] In order to solve the above technical problems, the technical solution provided by the utility model is:

[0006] A medium voltage cabinet and transformer cabinet assembly, comprising:

[0007] A medium voltage cabinet, comprising a medium voltage frame and a medium voltage outlet copper bar, wherein the medium voltage outlet copper bar is installed in the medium voltage frame;

[0008] The transformer cabinet comprises a transformer frame and a transformer outlet copper bar, wherein the transformer outlet copper bar is installed in the transformer frame;

[0009] The cabinet connection copper bar includes a medium voltage connection copper bar and a transformer connection copper bar, wherein the medium voltage connection copper bar is connected to the medium voltage outlet copper bar; the transformer connection copper bar is connected to the transformer outlet copper bar;

[0010] The medium voltage frame and the transformer frame are placed side by side, and the medium voltage connecting copper bar and the transformer connecting copper bar are detachably connected together.

[0011] Furthermore, it also includes a bushing for ensuring an electrical safety distance, wherein the bushing is sleeved at or near the connection between the medium voltage connecting copper bar and the transformer connecting copper bar.

[0012] Furthermore, the medium-voltage connecting copper bar is arranged opposite to the transformer connecting copper bar; the medium-voltage connecting copper bar includes a horizontally arranged medium-voltage connection A-phase copper bar, a medium-voltage connection B-phase copper bar, a medium-voltage connection C-phase copper bar and a medium-voltage connection PE-phase copper bar; the transformer connecting copper bar includes a horizontally arranged transformer connection A-phase copper bar, a transformer connection B-phase copper bar, a transformer connection C-phase copper bar and a transformer connection PE-phase copper bar; the medium-voltage connection A-phase copper bar, the medium-voltage connection B-phase copper bar, the medium-voltage connection C-phase copper bar and the medium-voltage connection PE-phase copper bar are respectively fixedly connected with the transformer connection A-phase copper bar, the transformer connection B-phase copper bar, the transformer connection C-phase copper bar and the transformer connection PE-phase copper bar.

[0013] Furthermore, the medium voltage frame and the transformer frame have the same depth, and the installation depths of the medium voltage connection A phase copper bar, the medium voltage connection B phase copper bar, the medium voltage connection C phase copper bar, the transformer connection A phase copper bar, the transformer connection B phase copper bar, and the transformer connection C phase copper bar are the same.

[0014] Furthermore, the medium-voltage outlet copper bar includes a medium-voltage A-phase copper bar, a medium-voltage B-phase copper bar, a medium-voltage C-phase copper bar and a medium-voltage PE-phase copper bar, and the medium-voltage A-phase copper bar, the medium-voltage B-phase copper bar, the medium-voltage C-phase copper bar and the medium-voltage PE-phase copper bar are respectively fixedly connected to the medium-voltage connection A-phase copper bar, the medium-voltage connection B-phase copper bar, the medium-voltage connection C-phase copper bar and the medium-voltage connection PE-phase copper bar; the medium-voltage A-phase copper bar, the medium-voltage B-phase copper bar and the medium-voltage C-phase copper bar are vertically arranged at the rear of the medium-voltage frame.

[0015] Furthermore, the transformer outlet copper bar includes a transformer A-phase copper bar, a transformer B-phase copper bar, a transformer C-phase copper bar and a transformer PE-phase copper bar, and the transformer A-phase copper bar, the transformer B-phase copper bar, the transformer C-phase copper bar and the transformer PE-phase copper bar are respectively fixedly connected to the transformer connection A-phase copper bar, the transformer connection B-phase copper bar, the transformer connection C-phase copper bar and the transformer connection PE-phase copper bar.

[0016] Furthermore, the transformer A-phase copper bar, transformer B-phase copper bar and transformer C-phase copper bar are vertically arranged at the rear of the transformer frame; at least part of the transformer A-phase copper bar, transformer B-phase copper bar and transformer C-phase copper bar are arranged as soft copper bars.

[0017] Furthermore, it also includes a plurality of insulators, which are respectively fixedly arranged between the medium voltage A phase copper bar, the medium voltage B phase copper bar, the medium voltage C phase copper bar and the medium voltage frame, and between the transformer A phase copper bar, the transformer B phase copper bar, the transformer C phase copper bar and the transformer frame.

[0018] Furthermore, the medium voltage cabinet also includes a grounding switch, and the grounding switch is fixedly arranged in the middle of the medium voltage frame.

[0019] Furthermore, the transformer cabinet also includes a transformer, and the transformer is fixedly arranged in the middle of the transformer frame.

[0020] Beneficial effects of the utility model:

[0021] In the utility model, the medium voltage cabinet and the transformer cabinet are installed adjacent to each other, and the cable connection between the medium voltage cabinet and the transformer cabinet is changed to a cabinet-joined copper busbar connection, which solves the problems of low efficiency and high cost of cable connection in the prior art; since the heat dissipation performance of the cabinet-joined copper busbar is better than that of the cable, the temperature rise problem of the connection in the cabinet can also be well solved, avoiding the safety risks caused by cable aging. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural schematic diagram of a medium voltage cabinet and a transformer cabinet assembly in one embodiment of the utility model;

[0023] Figure 2 An exploded view of a medium voltage cabinet and a transformer cabinet assembly of the utility model in one embodiment;

[0024] Figure 3 It is a side view of a medium voltage cabinet of the utility model in one embodiment;

[0025] Figure 4 It is a rear view of a medium voltage cabinet of the utility model in one embodiment.

[0026] Reference numerals include:

[0027] 100—Medium voltage cabinet 110—Medium voltage frame

[0028] 120—Medium voltage outlet copper bar 121—Medium voltage A phase copper bar

[0029] 122—Medium voltage B phase copper busbar 123—Medium voltage C phase copper busbar

[0030] 124—Medium voltage PE phase copper busbar 130—Earthing switch

[0031] 200—Transformer cabinet 210—Transformer frame

[0032] 220—Transformer 230—Transformer output copper bar

[0033] 231—Transformer A phase copper busbar 232—Transformer B phase copper busbar

[0034] 233—Transformer C phase copper busbar 234—Transformer PE phase copper busbar

[0035] 300—Copper busbar for cabinet connection 310—Medium voltage copper busbar

[0036] 311—Medium voltage connection A phase copper busbar 312—Medium voltage connection B phase copper busbar

[0037] 313—Medium voltage connection C phase copper busbar 314—Medium voltage connection PE phase copper busbar

[0038] 320—Transformer connection copper bar 321—Transformer connection A phase copper bar

[0039] 322—Transformer connection B phase copper busbar 323—Transformer connection C phase copper busbar

[0040] 324—Transformer connection PE phase copper bar 330—Casing

[0041] 400—Insulator DETAILED DESCRIPTION

[0042] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0043] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0044] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and 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, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0045] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0046] Please refer to Figure 1 and Figure 2, is a preferred embodiment of the utility model, the medium voltage cabinet and transformer cabinet assembly includes: a medium voltage cabinet 100, including a medium voltage frame 110 and a medium voltage outlet copper bar 120, the medium voltage outlet copper bar 120 is installed in the medium voltage frame 110; a transformer cabinet 200, including a transformer frame 210 and a transformer outlet copper bar 230, the transformer outlet copper bar 230 is installed in the transformer frame 210; a cabinet connection copper bar 300, including a medium voltage connection copper bar 310 and a transformer connection copper bar 320, the medium voltage connection copper bar 310 is connected to the medium voltage outlet copper bar 120; the transformer connection copper bar 320 is connected to the transformer outlet copper bar 230; the medium voltage frame 110 and the transformer frame 210 are placed side by side, and the medium voltage connection copper bar 310 and the transformer connection copper bar 320 are detachably connected together.

[0047] In the utility model, the medium voltage cabinet 100 and the transformer cabinet 200 are installed adjacent to each other, and the cable connection between the medium voltage cabinet 100 and the transformer cabinet 200 is replaced by a cabinet-joining copper bus 300, thereby solving the problems of low efficiency and high cost of cable connection in the prior art. Since the heat dissipation performance of the cabinet-joining copper bus 300 is better than that of the cable, the temperature rise problem of the connection in the cabinet can be well solved, thereby avoiding the safety risks caused by cable aging.

[0048] The copper bar 300 for connecting the cabinets can be prefabricated. After the medium voltage cabinet 100 and the transformer cabinet 200 are installed and fixed on site, they can be quickly connected together through the copper bar 300 for connecting the cabinets. The installation is convenient, the installation time is saved by more than 80%, and the project cycle is significantly shortened. According to the cost of each set of copper bar 300 for connecting the cabinets of a 2000KVA transformer, it is about 2,500 yuan. The installation cost of a set of medium voltage cabinet 100 and transformer cabinet 200 can save about 4,500 yuan.

[0049] The medium voltage cabinet and transformer cabinet assembly mainly includes a medium voltage cabinet 100, a transformer cabinet 200, a cabinet connection copper bar 300 and an insulator 400. The cabinet connection copper bar 300 is used to quickly connect the medium voltage cabinet 100 and the transformer cabinet 200. The above components are further described in detail below.

[0050] like Figure 1 and Figure 2 As shown, the transformer cabinet 200 mainly includes a transformer frame 210, a transformer 220 and a transformer outlet copper busbar 230. The transformer frame 210 is a rectangular box-shaped structure as a whole, and the transformer 220 and the transformer outlet copper busbar 230 are both fixedly installed in the transformer frame 210. Specifically, the transformer 220 is fixedly arranged in the middle of the transformer frame 210; the bottom space of the transformer frame 210 is used to install the transformer connection copper busbar 320 of the cabinet connection copper busbar 300.

[0051] The transformer outlet copper bar 230 is arranged at the rear of the transformer frame 210. The transformer outlet copper bar 230 includes a transformer A phase copper bar 231, a transformer B phase copper bar 232, a transformer C phase copper bar 233 and a transformer PE phase copper bar 234. The transformer A phase copper bar 231, the transformer B phase copper bar 232 and the transformer C phase copper bar 233 are vertically arranged in parallel with each other at the rear of the transformer frame 210, and the transformer PE phase copper bar 234 is horizontally arranged at the bottom of the transformer frame 210.

[0052] Insulators 400 are respectively provided between the transformer A-phase copper bar 231, the transformer B-phase copper bar 232, the transformer C-phase copper bar 233 and the transformer frame 210. The support of the insulator 400 can prevent the transformer A-phase copper bar 231, the transformer B-phase copper bar 232, and the transformer C-phase copper bar 233 from directly contacting the transformer frame 210. In one embodiment of the present application, the transformer A-phase copper bar 231, the transformer B-phase copper bar 232, and the transformer C-phase copper bar 233 are all soft copper bars. In another embodiment of the present application, part of the transformer A-phase copper bar 231 is a soft copper bar, part of the transformer B-phase copper bar 232 is a soft copper bar, and part of the transformer C-phase copper bar 233 is also a soft copper bar. All or part of the transformer A-phase copper bar 231, transformer B-phase copper bar 232 and transformer C-phase copper bar 233 are configured as soft copper bars, which can prevent vibration from being transmitted to the copper bars when the transformer 220 is working.

[0053] like Figure 3 and Figure 4 As shown, the medium voltage cabinet 100 mainly includes a medium voltage frame 110, a medium voltage outlet copper bar 120 and a grounding switch 130. The medium voltage frame 110 is a rectangular box-shaped as a whole, and the medium voltage outlet copper bar 120 and the grounding switch 130 are both fixedly installed in the medium voltage frame 110. Specifically, the grounding switch 130 is fixedly arranged in the middle of the medium voltage frame 110; the bottom space of the medium voltage frame 110 is used to install the medium voltage connection copper bar 310 of the cabinet connection copper bar 300.

[0054] In one embodiment of the present application, the medium voltage frame 110 has the same depth as the transformer frame 210. The medium voltage cabinet 100 and the transformer cabinet 200 are installed adjacent to each other, and have a unified appearance and are beautiful as a whole.

[0055] The medium voltage outlet copper bar 120 is arranged at the rear of the medium voltage frame 110. The medium voltage outlet copper bar 120 includes a medium voltage A phase copper bar 121, a medium voltage B phase copper bar 122, a medium voltage C phase copper bar 123 and a medium voltage PE phase copper bar 124. The medium voltage A phase copper bar 121, the medium voltage B phase copper bar 122 and the medium voltage C phase copper bar 123 are vertically arranged in parallel with each other at the rear of the medium voltage frame 110, and the medium voltage PE phase copper bar 124 is horizontally arranged at the bottom of the medium voltage frame 110. Insulators 400 are respectively arranged between the medium voltage A phase copper bar 121, the medium voltage B phase copper bar 122, the medium voltage C phase copper bar 123 and the medium voltage frame 110. Through the support of the insulator 400, the medium voltage A phase copper bar 121, the medium voltage B phase copper bar 122, the medium voltage C phase copper bar 123 can be prevented from directly contacting the medium voltage frame 110.

[0056] like Figure 1 and Figure 2 As shown, the cabinet connection copper bar 300 includes a medium voltage connection copper bar 310 and a transformer connection copper bar 320. The medium voltage connection copper bar 310 and the transformer connection copper bar 320 are arranged opposite to each other, so that the medium voltage connection copper bar 310 and the transformer connection copper bar 320 can be detachably connected together. The medium voltage connection copper bar 310 is connected to the medium voltage outlet copper bar 120; the transformer connection copper bar 320 is connected to the transformer outlet copper bar 230. Before leaving the factory, the medium voltage connecting copper bar 310 and the medium voltage outlet copper bar 120 are fixedly installed together in the medium voltage frame 110; the transformer connecting copper bar 320 and the transformer outlet copper bar 230 are fixedly installed together in the transformer frame 210; after arriving at the site, after the medium voltage cabinet 100 and the transformer cabinet 200 are positioned and fixedly installed, the medium voltage connecting copper bar 310 and the transformer connecting copper bar 320 are directly connected together, so that the medium voltage cabinet 100 and the transformer cabinet 200 can be quickly connected.

[0057] Corresponding to the medium voltage outlet copper bar 120, the medium voltage connection copper bar 310 includes a horizontally arranged medium voltage connection A phase copper bar 311, a medium voltage connection B phase copper bar 312, a medium voltage connection C phase copper bar 313 and a medium voltage connection PE phase copper bar 314. The medium voltage connection A phase copper bar 311, the medium voltage connection B phase copper bar 312, the medium voltage connection C phase copper bar 313 and the medium voltage connection PE phase copper bar 314 are fixedly connected to the medium voltage A phase copper bar 121, the medium voltage B phase copper bar 122, the medium voltage C phase copper bar 123 and the medium voltage PE phase copper bar 124 respectively.

[0058] Corresponding to the transformer outlet copper bar 230, the transformer connection copper bar 320 includes a horizontally arranged transformer connection A phase copper bar 321, a transformer connection B phase copper bar 322, a transformer connection C phase copper bar 323 and a transformer connection PE phase copper bar 324. The transformer connection A phase copper bar 321, the transformer connection B phase copper bar 322, the transformer connection C phase copper bar 323 and the transformer connection PE phase copper bar 324 are fixedly connected to the transformer A phase copper bar 231, the transformer B phase copper bar 232, the transformer C phase copper bar 233 and the transformer PE phase copper bar 234 respectively.

[0059] The installation depths of the medium-voltage A-phase copper bar 311, the medium-voltage B-phase copper bar 312, the medium-voltage C-phase copper bar 313, the medium-voltage PE-phase copper bar 314, the transformer A-phase copper bar 321, the transformer B-phase copper bar 322, the transformer C-phase copper bar 323, and the transformer PE-phase copper bar 324 are the same (i.e., on the same vertical line). The medium-voltage A-phase copper bar 311, the medium-voltage B-phase copper bar 312, the medium-voltage C-phase copper bar 313, and the medium-voltage PE-phase copper bar 314 are detachably connected to the transformer A-phase copper bar 321, the transformer B-phase copper bar 322, the transformer C-phase copper bar 323, and the transformer PE-phase copper bar 324, respectively.

[0060] In one embodiment of the present application, Figure 3 and Figure 4 As shown, the medium voltage cabinet and transformer cabinet assembly also includes a bushing 330 for ensuring electrical safety distance. The bushing 330 is sleeved at or near the connection between the medium voltage copper bar 310 and the transformer copper bar 320 to ensure sufficient electrical safety distance.

[0061] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, many changes can be made in the specific implementation methods and application scopes based on the ideas of the present invention. As long as these changes do not deviate from the concept of the present invention, they all belong to the protection scope of the present invention.

Claims

1. A medium voltage cabinet and transformer cabinet assembly, characterized in that: include: A medium voltage cabinet (100) comprises a medium voltage frame (110) and a medium voltage outlet copper busbar (120), wherein the medium voltage outlet copper busbar (120) is installed in the medium voltage frame (110); A transformer cabinet (200) comprises a transformer frame (210) and a transformer outlet copper busbar (230), wherein the transformer outlet copper busbar (230) is installed in the transformer frame (210); The cabinet-joining copper bar (300) comprises a medium-voltage copper bar (310) and a transformer-connected copper bar (320), wherein the medium-voltage copper bar (310) is connected to the medium-voltage outlet copper bar (120); and the transformer-connected copper bar (320) is connected to the transformer outlet copper bar (230); The medium voltage frame (110) and the transformer frame (210) are placed side by side, and the medium voltage connection copper busbar (310) and the transformer connection copper busbar (320) are detachably connected together.

2. The medium voltage cabinet and transformer cabinet assembly according to claim 1, characterized in that: It also includes a bushing (330) for ensuring an electrical safety distance, wherein the bushing (330) is sleeved at or near the connection between the medium voltage connection copper bar (310) and the transformer connection copper bar (320).

3. The medium voltage cabinet and transformer cabinet assembly according to claim 1, characterized in that: The medium-voltage connection copper bar (310) is arranged opposite to the transformer connection copper bar (320); the medium-voltage connection copper bar (310) includes a medium-voltage connection A-phase copper bar (311), a medium-voltage connection B-phase copper bar (312), a medium-voltage connection C-phase copper bar (313) and a medium-voltage connection PE-phase copper bar (314) arranged horizontally; the transformer connection copper bar (320) includes a transformer connection A-phase copper bar (321), a transformer connection B-phase copper bar (322) arranged horizontally. , a transformer-connected C-phase copper bar (323) and a transformer-connected PE-phase copper bar (324); the medium-voltage A-phase copper bar (311), the medium-voltage B-phase copper bar (312), the medium-voltage C-phase copper bar (313) and the medium-voltage PE-phase copper bar (314) are respectively fixedly connected to the transformer-connected A-phase copper bar (321), the transformer-connected B-phase copper bar (322), the transformer-connected C-phase copper bar (323) and the transformer-connected PE-phase copper bar (324).

4. The medium voltage cabinet and transformer cabinet assembly according to claim 3, characterized in that: The medium voltage frame (110) and the transformer frame (210) have the same depth, and the medium voltage connection A phase copper bar (311), the medium voltage connection B phase copper bar (312), the medium voltage connection C phase copper bar (313), the transformer connection A phase copper bar (321), the transformer connection B phase copper bar (322), and the transformer connection C phase copper bar (323) have the same installation depth.

5. The medium voltage cabinet and transformer cabinet assembly according to claim 4, characterized in that: The medium-voltage outlet copper bar (120) comprises a medium-voltage A-phase copper bar (121), a medium-voltage B-phase copper bar (122), a medium-voltage C-phase copper bar (123) and a medium-voltage PE-phase copper bar (124); the medium-voltage A-phase copper bar (121), the medium-voltage B-phase copper bar (122), the medium-voltage C-phase copper bar (123) and the medium-voltage PE-phase copper bar (124) are respectively fixedly connected to the medium-voltage connection A-phase copper bar (311), the medium-voltage connection B-phase copper bar (312), the medium-voltage connection C-phase copper bar (313) and the medium-voltage connection PE-phase copper bar (314); the medium-voltage A-phase copper bar (121), the medium-voltage B-phase copper bar (122) and the medium-voltage C-phase copper bar (123) are vertically arranged at the rear of the medium-voltage frame (110).

6. The medium voltage cabinet and transformer cabinet assembly according to claim 5, characterized in that: The transformer outlet copper bar (230) comprises a transformer A-phase copper bar (231), a transformer B-phase copper bar (232), a transformer C-phase copper bar (233) and a transformer PE-phase copper bar (234); the transformer A-phase copper bar (231), the transformer B-phase copper bar (232), the transformer C-phase copper bar (233) and the transformer PE-phase copper bar (234) are respectively fixedly connected to the transformer connection A-phase copper bar (321), the transformer connection B-phase copper bar (322), the transformer connection C-phase copper bar (323) and the transformer connection PE-phase copper bar (324).

7. The medium voltage cabinet and transformer cabinet assembly according to claim 6, characterized in that: The transformer A-phase copper bar (231), the transformer B-phase copper bar (232), and the transformer C-phase copper bar (233) are vertically arranged at the rear of the transformer frame (210); at least a portion of the transformer A-phase copper bar (231), the transformer B-phase copper bar (232), and the transformer C-phase copper bar (233) are arranged as soft copper bars.

8. The medium voltage cabinet and transformer cabinet assembly according to claim 7, characterized in that: It also includes a plurality of insulators (400), wherein the plurality of insulators (400) are respectively fixedly arranged between the medium voltage A phase copper bar (121), the medium voltage B phase copper bar (122), the medium voltage C phase copper bar (123) and the medium voltage frame (110), and between the transformer A phase copper bar (231), the transformer B phase copper bar (232), the transformer C phase copper bar (233) and the transformer frame (210).

9. The medium voltage cabinet and transformer cabinet assembly according to any one of claims 1 to 5, characterized in that: The medium voltage cabinet (100) further comprises a grounding switch (130), wherein the grounding switch (130) is fixedly arranged in the middle of the medium voltage frame (110).

10. The medium voltage cabinet and transformer cabinet assembly according to any one of claims 1 to 5, characterized in that: The transformer cabinet (200) further comprises a transformer (220), wherein the transformer (220) is fixedly arranged in the middle of the transformer frame (210).