Drawer assembly of power distribution cabinet and power distribution cabinet

Abstract

The utility model provides a drawer assembly of a power distribution cabinet and the power distribution cabinet, and belongs to the technical field of electrical equipment. The drawer assembly of the power distribution cabinet comprises a drawer body and a layer partition plate, the drawer body comprises a bottom plate and side plates on the two sides of the bottom plate, the bottom plate and the side plates define a containing cavity, the containing cavity is divided into an assembling area and a heat dissipation area, the assembling area is used for installing electrical components, and the positions, corresponding to the assembling area and the heat dissipation area, of the bottom plate are provided with a plurality of hole sets; the layer partition plates are used for being fixed in the power distribution cabinet and configured to support the drawer body, and arrayed heat dissipation holes are formed in the layer partition plates; and when the drawer main body enters the power distribution cabinet, at least part of the opening groups and at least part of the heat dissipation holes have overlapped parts. According to the drawer assembly of the power distribution cabinet, the heat dissipation circulation efficiency can be increased as much as possible on the premise that the protection level of the drawer assembly is guaranteed, and the requirements of a temperature rise test and a protection level test are met.

Description

Technical Field

[0001] The present application relates to the technical field of electrical equipment, and in particular to a drawer assembly of a power distribution cabinet and a power distribution cabinet. Background Art

[0002] Low-voltage distribution cabinets play an important role in distribution networks and engineering construction. Low-voltage distribution cabinets with drawers can extend or retract the drawers into the switch cabinet to allow electrical components or equipment installed in the drawers to leave or enter the switch cabinet. With the continuous development of modern industry, construction industry and power industry, more and higher requirements are put forward for the structure and performance of switch cabinets.

[0003] In low-voltage power distribution cabinets, the temperature rise test and the protection level test have design technical difficulties that affect each other. In related technologies, the power distribution cabinet generally opens through holes on the side panels or bottom panels for heat dissipation. However, due to the small space of the drawer unit in the power distribution cabinet, it is difficult to ensure the overall protection level requirements of the power distribution cabinet while meeting the heat dissipation requirements, which affects the normal operation of the power distribution cabinet. Utility Model Content

[0004] The embodiments of the present application provide a drawer assembly of a power distribution cabinet and a power distribution cabinet, so as to solve the technical problem in the related art that the protection level requirement and the heat dissipation requirement are likely to conflict due to the small space of the drawer unit of the power distribution cabinet.

[0005] On the one hand, an embodiment of the present application provides a drawer assembly of a power distribution cabinet, including:

[0006] The drawer body comprises a bottom plate and side plates on both sides of the bottom plate, wherein the bottom plate and the side plates together enclose a receiving cavity, wherein the receiving cavity is divided into an assembly area and a heat dissipation area, wherein the assembly area is used to install electrical components, and the bottom plate is provided with a plurality of opening groups at positions corresponding to the assembly area and the heat dissipation area;

[0007] A layer partition, used to be fixed inside the power distribution cabinet, and configured to support the drawer body when the drawer body enters the inside of the power distribution cabinet, and a plurality of heat dissipation holes are constructed on the layer partition;

[0008] When the drawer body enters the interior of the power distribution cabinet, at least part of the opening group and at least part of the heat dissipation holes have overlapping portions.

[0009] In some possible embodiments, the hole group includes a first opening located on the base plate, the first opening corresponds to the assembly area, the first opening and the heat dissipation hole are both strip holes, and the length extension direction of the first opening intersects with the length extension direction of the heat dissipation hole.

[0010] In some possible implementations, the maximum width of the first opening and the heat dissipation hole is no greater than 12.5 mm.

[0011] In some possible implementations, the opening group includes a second opening located on the bottom plate, the second opening corresponds to the heat dissipation area, the second opening includes two hollow portions perpendicular to each other, and a plurality of the second openings are alternately arranged head to tail.

[0012] In some possible implementations, the second opening is a T-shaped hole, and the maximum width of the second opening is no greater than 12.5 mm.

[0013] In some possible implementations, a heat dissipation gap is provided between the bottom plate of the drawer body and the layer partition plate.

[0014] In some possible implementations, a sliding member is installed on the bottom plate, and the sliding member is configured to drive the drawer body to slide relative to the partition plate;

[0015] The bottom plate of the drawer body and the layer partition plate form the heat dissipation gap through the sliding member.

[0016] In some possible implementations, the aperture of the opening of the base plate corresponding to the assembly area is smaller than the aperture of the opening of the base plate corresponding to the heat dissipation area.

[0017] In some possible implementations, along the pulling direction of the drawer body, the heat dissipation area is located on the inner side of the assembly area, a hollow limiting frame is fixed in the accommodating cavity, and the electrical component is fixed in the drawer body through the limiting frame.

[0018] On the other hand, the present application provides a power distribution cabinet, comprising a power distribution cabinet body and at least one drawer assembly of the power distribution cabinet described in any one of the above items arranged on the power distribution cabinet body.

[0019] The drawer assembly of the power distribution cabinet provided in the present application has a storage cavity of the drawer body divided into an assembly area and a heat dissipation area, wherein the assembly area is used to install electrical components, and the bottom plate is constructed with a plurality of opening groups corresponding to the positions of the assembly area and the heat dissipation area; a layer partition is used to be fixed inside the power distribution cabinet, and is configured to support the drawer body, and an array of heat dissipation holes is constructed on the layer partition.

[0020] Since there are multiple opening groups on the bottom plate corresponding to the assembly area and the heat dissipation area, dust particles can be prevented from entering the assembly area of ​​the electrical components through the bottom plate, ensuring the overall protection level requirements of the drawer components, and can effectively enhance the air circulation in the heat dissipation area, effectively taking into account the protection level requirements and heat dissipation requirements of the power distribution cabinet. In addition, there is an overlapping part between the opening and the heat dissipation hole, and the airflow can directly pass through the overlapping part to form an external exchange, increasing the airflow speed, thereby improving the overall heat dissipation performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0022] Figure 1 This is a schematic diagram of the overall structure of the drawer assembly of the power distribution cabinet in the embodiment of the present application;

[0023] Figure 2 for Figure 1 A top view of

[0024] Figure 3 for Figure 1 A schematic diagram of the structure at another angle;

[0025] Figure 4 for Figure 1 Side view of.

[0026] Description of Reference Numerals

[0027] 100- drawer body;

[0028] 101-bottom plate; 102-side plate; 103-assembly area; 104-heat dissipation area; 105-first opening; 106-second opening; 1061-hollow portion; 107-overlapping portion; 108-sliding member; 109-limiting frame;

[0029] 200-layer partition; 201-heat dissipation hole;

[0030] 300-heat dissipation clearance;

[0031] 400-Electrical components.

[0032] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0033] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0034] As mentioned in the background technology, the random inspection requirements for low-voltage drawer cabinets after delivery are getting higher and higher. Among the random inspection requirements, the temperature rise test and protection level test of the low-voltage distribution cabinet are contradictory technical key points.

[0035] The temperature rise test is a method used to test the heat generated by electrical equipment during operation and its heat dissipation capacity. The purpose of this test is to ensure that the temperature of the equipment does not exceed the specified safety limit under normal operating conditions, thereby avoiding failures or safety hazards caused by overheating. The protection level test is a method used to test the protection ability of the housing of electrical equipment against external substances (such as dust, water, etc.). The purpose of this experiment is to ensure that the equipment can work normally under different environmental conditions and prevent external substances from entering the interior of the equipment, thereby protecting the safety and function of internal components.

[0036] Generally speaking, the better the heat dissipation performance of a low-voltage distribution cabinet, the larger the actual opening of the plate and the lower the protection level. Especially in a low-voltage drawer cabinet, since the drawer unit in the distribution cabinet itself has a small space, how to ensure that the temperature rise test meets the standard and the protection level meets the standard is the main design difficulty of the distribution cabinet.

[0037] At present, conventional manufacturers only consider the protection level to ensure that the protection level can meet the requirements, and pay less attention to whether the temperature rise level can meet the national standard requirements. Considering that the temperature rise test meets the requirements, but the parameter design of some protection levels needs to be sacrificed, the distribution cabinet cannot meet the requirements of both the temperature rise test and the protection level test, affecting the normal operation of the distribution cabinet.

[0038] Based on this, one or more embodiments of the present application provide a drawer assembly of a distribution cabinet, which utilizes the internal partition of the drawer body to form an assembly area and a heat dissipation area, the assembly area is used to install electrical components, and the bottom plate is constructed with multiple groups of openings at positions corresponding to the assembly area and the heat dissipation area; the layer partition is used to be fixed inside the distribution cabinet and is configured to support the drawer body, and the layer partition is constructed with an array of heat dissipation holes.

[0039] Since the base plate is provided with a plurality of opening groups corresponding to the assembly area and the heat dissipation area, it is possible to prevent larger dust particles from entering the assembly area of ​​the electrical components through the base plate while ensuring the protection level requirements. There is an overlapping portion between the openings and the heat dissipation holes, and the airflow can directly pass through the overlapping portion to form an external exchange, thereby increasing the airflow flow speed and thus improving the overall heat dissipation performance.

[0040] The drawer assembly of the power distribution cabinet in the embodiment of the present application is described below with reference to the accompanying drawings.

[0041] like Figure 1 and Figure 2 As shown, the drawer assembly of the power distribution cabinet according to the embodiment of the present application includes a drawer body 100 and a partition plate 200 .

[0042] Among them, the drawer body 100 includes a bottom plate 101 and side plates 102 on both sides of the bottom plate 101. The bottom plate 101 and the side plates 102 together form a accommodating cavity, which is divided into an assembly area 103 and a heat dissipation area 104. The assembly area 103 is used to install electrical components 400, and the bottom plate 101 is configured with a plurality of opening groups at positions corresponding to the assembly area 103 and the heat dissipation area 104; the partition plate 200 is used to be fixed inside the power distribution cabinet, and is configured to support the drawer body 100 when the drawer body 100 enters the power distribution cabinet, and an array of heat dissipation holes 201 is configured on the partition plate 200; when the drawer body 100 enters the power distribution cabinet, at least part of the openings and at least part of the heat dissipation holes 201 have an overlapping portion 107.

[0043] From the above description, it can be seen that the drawer body 100 in the embodiment of the present application is provided with an opening group in the assembly area 103 and the heat dissipation area 104 of the bottom plate 101. When the drawer body 100 and the layer partition 200 are in a closed state, at least part of the openings and at least part of the heat dissipation holes 201 have an overlapping portion 107. The hot air flow in the drawer assembly can be exchanged with the outside world through the overlapping portion 107, thereby increasing the airflow exchange efficiency between the assembly area 103 and the outside world and improving the overall heat dissipation performance of the drawer assembly.

[0044] Here, it should be noted that in the embodiment of the present application, a plurality of layer partitions 200 are stacked inside the power distribution cabinet, and a drawer body 100 is placed on each layer of the layer partition 200. The drawer body 100 can be pulled and pulled relative to the layer partition 200. The closed state of the drawer body 100 and the layer partition 200 is the state in which the drawer body 100 is put into the power distribution cabinet, and the open state of the drawer body 100 and the layer partition 200 is the state in which the drawer body 100 is relatively pulled out of the outside of the power distribution cabinet. This will not be repeated in the following embodiments.

[0045] like Figure 1As shown, the bottom plate 101 and the side plates 102 on both sides of the bottom plate 101 can be connected by fasteners that are commonly penetrated, or fixedly connected by welding. In addition to the bottom plate 101 and the side plates 102, the drawer body 100 should also have a front panel and a rear panel. The front panel, the rear panel, the bottom plate 101 and the side plates 102 together form the drawer body 100. In addition, the electrical components 400 in the embodiment of the present application are electrical components 400 required for low-voltage power distribution cabinets in the related art, such as circuit breakers, relays or voltage transformers, etc.

[0046] In the present application embodiment, Figure 2 and Figure 3 As shown, the opening group includes a first opening 105 constructed on the bottom plate 101 corresponding to the assembly area 103 , the first opening 105 and the heat dissipation hole 201 are strip holes, and the length extension direction of the first opening 105 intersects with the length extension direction of the heat dissipation hole 201 .

[0047] Here, illustratively, the first opening 105 and the heat dissipation hole 201 are oblong holes or rectangular holes, the length extension direction of the first opening 105 and the heat dissipation hole 201 is also the long side direction of the first opening 105 and the heat dissipation hole 201, and the first opening 105 and the heat dissipation hole 201 are arranged perpendicular to each other.

[0048] The design of the strip holes can maximize the air flow channel while ensuring the protection level requirements, and the air can flow freely in different directions, thereby improving the heat dissipation efficiency. In addition, the length extension directions of the first opening 105 and the heat dissipation hole 201 are perpendicular to each other, forming a more complex and effective air flow path, which can block the direct entry of dust and debris to a certain extent, thereby improving the dustproof performance of the device.

[0049] As an alternative implementation, the first opening 105 and the heat dissipation hole 201 are elliptical holes, or wavy holes, as long as they are bar-shaped holes, and there is no absolute limitation on this in the embodiments of the present application.

[0050] Furthermore, the maximum width of the first opening 105 and the heat dissipation hole 201 is no greater than 12.5 mm.

[0051] Here, the maximum width of the first opening 105 is no greater than 12.5 mm, which means that the width of any position of the first opening 105 is no greater than 12.5 mm, and a rigid sphere with a diameter of 12.5 mm cannot pass through the first opening 105 .

[0052] The IP2X protection level requires preventing solid particles with a diameter less than 12.5 mm from entering, so the above design enables the bottom plate 101 and the layer partition plate 200 to meet the IP2X protection level of the equipment.

[0053] like Figure 2As shown, the opening group includes a second opening 106 constructed on the bottom plate 101 corresponding to the heat dissipation area 104. The second opening 106 includes two mutually perpendicular hollow portions 1061. Along the array direction, the plurality of second openings 106 are arranged alternately head to tail.

[0054] by Figure 2 Taking the second opening 106 as an example, the second opening 106 is a T-shaped waist hole, and the second opening 106 includes a horizontally arranged hollow portion 1061 and a vertically arranged hollow portion 1061, and the vertically arranged hollow portion 1061 is connected to the middle position of the horizontally arranged hollow portion 1061. The design of two mutually perpendicular hollow portions 1061 can form a more complex and effective air circulation path. The air can flow freely in different directions, thereby improving the heat dissipation efficiency.

[0055] In addition, the second openings 106 located in the same array direction are arranged alternately head to tail so that two adjacent second openings 106 fit into each other. This design can make greater use of the heat dissipation area 104 of the base plate 101, increase the heat dissipation flow path, and improve the heat dissipation effect.

[0056] As an alternative implementation, the second opening 106 may also be in other shapes, such as a cross-shaped hole, a “7”-shaped hole, or an “X”-shaped hole, as long as the hole diameter is larger than the hole diameter of the first opening 105 .

[0057] In the above embodiment, the maximum width of the second opening 106 is no greater than 12.5 mm.

[0058] Here, the maximum width of the second opening 106 is no greater than 12.5 mm, which means that the width of any position of the second opening 106 is no greater than 12.5 mm, and a rigid sphere with a diameter of 12.5 mm cannot pass through the second opening 106 .

[0059] The IP2X protection level requires that solid particles with a diameter less than 12.5 mm be prevented from entering, so the above design enables the bottom plate 101 and the layer partition plate 200 to meet the IP2X protection level of the equipment. Of course, for distribution cabinets with different protection level requirements, the maximum widths of the first opening 105, the second opening 106 and the heat dissipation hole 201 need to be changed accordingly.

[0060] like Figure 4 As shown, in the embodiment of the present application, a heat dissipation gap 300 is provided between the bottom plate 101 of the drawer body 100 and the partition plate 200 .

[0061] Specifically, a sliding member 108 is installed at the bottom of the drawer body 100 , and the sliding member 108 is configured to drive the drawer body 100 to slide relative to the partition plate 200 ; the bottom plate 101 of the drawer body 100 and the partition plate 200 generate a heat dissipation gap 300 through the sliding member 108 .

[0062] The above-mentioned sliding member 108 can be a roller or a pulley. Generally, the sliding member 108 is arranged on the side of the bottom plate 101 of the drawer body 100 facing the inside. When the drawer body 100 is pulled by external force, the sliding member 108 is used to slide relative to the partition plate 200, thereby gradually reducing the friction between the drawer body 100 and the partition plate 200.

[0063] The sliding member 108 itself has a certain height, so that the support of the sliding member 108 on the partition plate 200 forms a heat dissipation gap 300 between the partition plate 200 and the bottom plate 101. The heat dissipation gap 300 generated by the sliding member 108 between the bottom plate 101 and the partition plate 200 can form an air circulation channel, which is helpful for heat dissipation. In addition, through the overlapping portion 107 set between the above-mentioned opening and the heat dissipation hole 201, the heat dissipated by the electrical component 400 enters the heat dissipation gap 300 through the heat dissipation area 104 and the overlapping portion 107, and is dissipated out of the drawer body 100 through the heat dissipation gap 300.

[0064] It should be noted that in the embodiment of the present application, the overlapping portion 107 refers to the portion where the opening and the heat dissipation hole 201 have a common penetration. Figure 2 As shown in the example, the hot air flow generated by the electrical component 400 can be directly output from the drawer body 100 through the overlapping part 107. On the one hand, it reduces the obstruction of the air flow and speeds up the exchange of the air flow with the outside world. On the other hand, the non-overlapping part of the opening and the heat dissipation hole 201 can prevent external dust particles from entering the drawer body 100 as much as possible, thereby ensuring the overall protection level requirements of the drawer body 100.

[0065] Exemplarily, the size of the overlapping portion 107 is not less than 5 mm. Here, the overlapping portion 107 of the first opening 105 and the heat dissipation hole 201 is generally rectangular. For openings and heat dissipation holes 201 with different array densities, the shape of the overlapping portion 107 may also change. Therefore, the size of the overlapping portion 107 refers to the maximum distance between any two points of the overlapping portion 107.

[0066] The size design is based on the protection level requirement of IP2X. For distribution cabinets with different protection level requirements, the size of the overlapping part 107 may also change accordingly.

[0067] In some embodiments, along the pulling direction of the drawer body 100 , the heat dissipation area 104 is located on the inner side of the assembly area 103 , a hollow limiting frame 109 is fixed inside the drawer body 100 , and the electrical component 400 is fixed in the drawer body 100 through the limiting frame 109 .

[0068] Since the drawer body 100 is divided into an assembly area 103 and a heat dissipation area 104, the electrical component 400 is installed and fixed in the assembly area 103. The heat generated by the electrical component 400 can be directly dissipated through the front panel on the one hand, and can also be dissipated through the heat dissipation area 104 on the other hand. The electrical component 400 is assembled in the relatively outer assembly area 103, which can prevent excessive heat from being accumulated deep in the drawer body 100, thereby ensuring the heat dissipation effect of the electrical component 400 in the drawer body 100.

[0069] The limit frame 109 in the above embodiment is a rectangular frame, and the limit frame 109 and the side panel 102, and the limit frame 109 and the bottom plate 101 are fixedly connected by fasteners. Due to the hollow design of the limit frame 109, the side end surface of the electrical component 400 is in direct contact with the heat dissipation area 104, and the heat generated by the electrical component 400 can directly pass through the heat dissipation area 104 and pass out of the drawer body 100, which is beneficial to enhance the overall heat dissipation effect of the electrical component 400 and ensure that the drawer assembly of the distribution cabinet meets the temperature rise test requirements.

[0070] In some embodiments, the aperture of the opening of the bottom plate 101 corresponding to the assembly area 103 is smaller than the aperture of the opening of the bottom plate 101 corresponding to the heat dissipation area 104. The above design can prevent larger dust particles from entering the assembly area of ​​the electrical component 400 through the bottom plate, ensuring the overall protection level requirements of the drawer assembly. At the same time, the aperture of the opening of the heat dissipation area 104 is larger, which can effectively enhance the air circulation of the heat dissipation area 104, effectively taking into account the protection level requirements and heat dissipation requirements of the power distribution cabinet.

[0071] An embodiment of the present application further provides a power distribution cabinet, comprising a power distribution cabinet body and at least one drawer assembly of the power distribution cabinet according to any of the above embodiments, which is arranged on the power distribution cabinet body.

[0072] Since the power distribution cabinet comprises any of the above drawer assemblies, it has all the advantages of the drawer assemblies.

[0073] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the utility model disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0074] For ease of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are intended to better explain the principles and practical applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. A drawer assembly of a power distribution cabinet, characterized in that: include: A drawer body (100) comprises a bottom plate (101) and side plates (102) on both sides of the bottom plate (101); the bottom plate (101) and the side plates (102) together enclose a receiving cavity; the receiving cavity is divided into an assembly area (103) and a heat dissipation area (104); the assembly area (103) is used to install electrical components (400); and the bottom plate (101) is provided with a plurality of opening groups at positions corresponding to the assembly area (103) and the heat dissipation area (104); A layer partition (200) is used to be fixed inside the power distribution cabinet and is configured to support the drawer body (100) when the drawer body (100) enters the power distribution cabinet, and a plurality of heat dissipation holes (201) are configured on the layer partition (200); When the drawer body (100) enters the interior of the power distribution cabinet, at least part of the opening group and at least part of the heat dissipation holes (201) have overlapping parts (107).

2. The drawer assembly of the power distribution cabinet according to claim 1, characterized in that: The opening group comprises a first opening (105) located on the bottom plate (101), the first opening (105) corresponding to the assembly area (103), the first opening (105) and the heat dissipation hole (201) both being strip-shaped holes, and the length extension direction of the first opening (105) intersecting with the length extension direction of the heat dissipation hole (201).

3. The drawer assembly of the power distribution cabinet according to claim 2, characterized in that: The maximum width of the first opening (105) and the heat dissipation hole (201) is no greater than 12.5 mm.

4. The drawer assembly of the power distribution cabinet according to claim 1, characterized in that: The opening group comprises a second opening (106) located on the bottom plate (101), the second opening (106) corresponding to the heat dissipation area, the second opening (106) comprising two mutually perpendicular hollow portions (1061), and a plurality of the second openings (106) are arranged alternately head to tail.

5. The drawer assembly of the power distribution cabinet according to claim 4, characterized in that: The second opening (106) is a T-shaped hole, and the maximum width of the second opening (106) is no greater than 12.5 mm.

6. The drawer assembly of the power distribution cabinet according to any one of claims 1 to 5, characterized in that: A heat dissipation gap (300) is provided between the bottom plate (101) of the drawer body (100) and the layer partition plate (200).

7. The drawer assembly of the power distribution cabinet according to claim 6, characterized in that: A sliding member (108) is installed on the bottom plate (101), and the sliding member (108) is configured to drive the drawer body (100) to slide relative to the layer partition plate (200); The bottom plate (101) of the drawer body (100) and the layer partition plate (200) generate the heat dissipation gap (300) through the sliding member (108).

8. The drawer assembly of the power distribution cabinet according to any one of claims 1 to 5, characterized in that: The aperture of the opening of the bottom plate (101) corresponding to the assembly area (103) is smaller than the aperture of the opening of the bottom plate (101) corresponding to the heat dissipation area (104).

9. The drawer assembly of the power distribution cabinet according to any one of claims 1 to 5, characterized in that: Along the pulling direction of the drawer body (100), the heat dissipation area (104) is located inside the assembly area (103), a hollow limiting frame (109) is fixed in the accommodating cavity, and the electrical component (400) is fixed in the drawer body (100) via the limiting frame (109).

10. A power distribution cabinet, characterized in that: The invention comprises a power distribution cabinet body and at least one drawer assembly of a power distribution cabinet as claimed in any one of claims 1 to 9 which is arranged on the power distribution cabinet body.

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