Switchgear

Abstract

The utility model belongs to the technical field of electric power system, disclose a kind of switch cabinet.The switch cabinet includes instrument cabinet, first function cabinet and second function cabinet, wherein, first function cabinet includes circuit breaker room, instrument cabinet is detachably installed in the top of first function cabinet, and the rear side of first function cabinet is equipped with first connecting part and first positioning part;Second function cabinet includes busbar room and cable room, and the front side of second function cabinet is equipped with second connecting part and second positioning part, second connecting part is detachably connected in first connecting part, and second positioning part and first positioning part are mutually matched to guide the connection of second connecting part and first connecting part.The switch cabinet is spliced by multiple cabinet bodies, which is convenient for assembly and transportation. When a certain component fails and needs to be repaired, only the corresponding cabinet body needs to be removed, which shortens the maintenance time, saves manpower and financial resources, and the splicing between the cabinet bodies is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of power system technology, and in particular to a switch cabinet. Background Technology

[0002] Medium-voltage switchgear is mainly used for power transmission in power plants and small and medium-sized generators, power receiving and transmission in secondary substations of power systems, power distribution in industrial and mining enterprises, and starting of large high-voltage motors. This product is widely used and highly regarded by users.

[0003] Currently, most mid-mounted switchgear has a monolithic structure, which is bulky and inconvenient for product processing and transportation. The internal space of the cabinet is limited, and installation personnel need to enter the cabinet to install some components, making assembly difficult and inefficient. During equipment operation, if an irreparable fault occurs in a compartment, the entire cabinet usually needs to be disassembled and replaced, increasing maintenance time and costs.

[0004] Therefore, there is an urgent need to propose a switch cabinet to solve the above-mentioned technical problems. Utility Model Content

[0005] This utility model provides a switch cabinet, which is composed of multiple cabinets spliced ​​together, making it easy to assemble and transport. When a component malfunctions and needs to be repaired, only the corresponding cabinet needs to be removed, which shortens maintenance time and saves manpower and financial resources. In addition, the splicing between the cabinets is relatively convenient.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] Switchgear, including:

[0008] Instrument cabinet;

[0009] The first functional cabinet includes a circuit breaker compartment, and the instrument cabinet is detachably installed on the top of the first functional cabinet. The rear side of the first functional cabinet is provided with a first connecting part and a first positioning part.

[0010] The second functional cabinet includes a busbar compartment and a cable compartment. The front side of the second functional cabinet is provided with a second connecting part and a second positioning part. The second connecting part is detachably connected to the first connecting part. The second positioning part cooperates with the first positioning part to guide the connection between the second connecting part and the first connecting part.

[0011] Optionally, the first positioning part includes an assembly hole and a limiting hole that communicate with each other, and the second positioning part includes a connecting part and a limiting part. The two ends of the connecting part are connected to the front side of the second functional cabinet and the limiting part. The limiting part passes through the assembly hole to allow the connecting part to enter the limiting hole, and when the connecting part enters the limiting hole, it abuts against the inner side of the rear side of the first functional cabinet.

[0012] Optionally, the first positioning part is disposed on the top and / or bottom of the rear side of the first functional cabinet, and the second positioning part is disposed on the top and / or bottom of the front side of the second functional cabinet, with the second positioning part corresponding to the first positioning part one by one.

[0013] Optionally, the first connecting part is a first connecting plate disposed on both sides of the rear side of the first functional cabinet in the width direction, and the first connecting part is provided with a plurality of first connecting holes. The second connecting part is a second connecting plate disposed on both sides of the front side of the second functional cabinet in the width direction, and the second connecting plate is provided with second connecting holes corresponding one-to-one with the first connecting holes. Connectors are installed in the corresponding second connecting holes and the first connecting holes to connect the first connecting plate and the second connecting plate together.

[0014] Optionally, the top of the first functional cabinet has a stepped structure, the stepped structure includes a first step surface near the front side of the first functional cabinet, a second step surface near the rear side of the first functional cabinet, and a vertical plate connecting the first step surface and the second step surface. The second step surface is higher than the first step surface. The instrument cabinet is installed on the first step surface, and the back panel of the instrument cabinet is connected to the vertical plate.

[0015] Optionally, a top cover is provided on the second step surface, and the top of the top cover is flush with the top of the second functional cabinet.

[0016] Optionally, a first fan is provided on the top of the first functional cabinet, the first fan is located behind the instrument cabinet, a second fan is provided at the bottom of the circuit breaker compartment opposite to the first fan, and a third fan is provided on the top of the second functional cabinet.

[0017] Optionally, a contact box assembly and a grounding switch assembly are installed on the rear side of the first functional cabinet, at least a portion of the contact box assembly and the grounding switch assembly are located outside the rear side of the first functional cabinet, and an opening is provided on the front side of the second functional cabinet, through which at least a portion of the contact box assembly and the grounding switch assembly enters the second functional cabinet.

[0018] Optionally, a first current transformer group is provided on the rear side of the first functional cabinet above the contact box assembly, and a second current transformer group is provided inside the second functional cabinet.

[0019] Optionally, the first functional cabinet further includes a lower compartment, which is located below the circuit breaker compartment and opposite to the cable compartment.

[0020] The beneficial effects of this utility model are:

[0021] This utility model provides a switch cabinet, including an instrument cabinet, a first functional cabinet, and a second functional cabinet. The instrument cabinet, the first functional cabinet, and the second functional cabinet are detachably connected. Compared with the integral structure of switch cabinets in the prior art, this configuration results in a smaller volume of each cabinet, facilitating processing, installation, and transportation.

[0022] By installing the components in the switch cabinet into the instrument cabinet, the first functional cabinet, and the second functional cabinet according to their functions, several advantages are achieved. First, it avoids the need for workers to enter the confined space for installation, reducing the difficulty of component assembly. Second, multiple workers can simultaneously assemble the components in the instrument cabinet, the first functional cabinet, and the second functional cabinet, greatly improving assembly efficiency. Third, if a component malfunctions, only the corresponding cabinet needs to be opened or removed for repair, eliminating the need to dismantle all cabinets, thus shortening maintenance time and reducing maintenance costs.

[0023] By setting a first positioning part on the first functional cabinet and a second positioning part on the second functional cabinet that cooperates with the first positioning part to guide the assembly of the first connecting part on the first functional cabinet and the second connecting part on the second functional cabinet, the relative position between the first connecting part and the second connecting part can be made more accurate, reducing the connection difficulty between the first connecting part and the second connecting part. This not only reduces the assembly difficulty between the first functional cabinet and the second functional cabinet, but also improves the assembly efficiency between the first functional cabinet and the second functional cabinet.

[0024] Placing the instrument cabinet above the first functional cabinet can effectively reduce the floor space occupied by the entire switch cabinet. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0026] Figure 1This is a schematic diagram of a switch cabinet provided in an embodiment of the present utility model;

[0027] Figure 2 This is an exploded view of a switch cabinet provided in an embodiment of the present utility model;

[0028] Figure 3 This is a schematic diagram of a buckle provided in an embodiment of the present utility model;

[0029] Figure 4 This is a schematic diagram of a card slot provided in an embodiment of the present utility model;

[0030] Figure 5 This is an assembly drawing of a buckle and a slot provided in an embodiment of this utility model;

[0031] Figure 6 This is a schematic diagram of another type of buckle provided in an embodiment of the present utility model;

[0032] Figure 7 This is a schematic diagram of another card slot provided in an embodiment of the present utility model;

[0033] Figure 8 This is an assembly diagram of another buckle and slot provided in an embodiment of the present utility model;

[0034] Figure 9 This is a schematic diagram of another switch cabinet provided in an embodiment of this utility model.

[0035] In the picture:

[0036] 100. Instrument cabinet;

[0037] 200. First functional cabinet; 201. Stepped structure; 2011. First step surface; 2012. Second step surface; 2013. Vertical plate; 202. Circuit breaker compartment; 203. Lower compartment; 210. First connecting plate; 220. Assembly hole; 230. Limiting hole; 240. Top cover; 250. First partition plate; 260. Contact box assembly; 270. Grounding switch assembly; 271. Rotating shaft; 272. Stationary contact; 273. Moving contact; 280. First current transformer group; 290. Valve mechanism;

[0038] 300. Second functional cabinet; 301. Busbar compartment; 3011. Through-wall bushing; 3012. Insulator; 302. Cable compartment; 310. Second connecting plate; 320. Third connecting part; 330. Limiting part; 340. Second partition; 350. Opening; 360. Second current transformer group;

[0039] 410. First fan; 420. Second fan; 430. Third fan. Detailed Implementation

[0040] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0041] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0042] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0043] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0044] This embodiment provides a switchgear composed of multiple cabinets, facilitating assembly and transportation. When a component malfunctions and requires repair, only the corresponding cabinet needs to be removed, shortening maintenance time and saving manpower and resources. Furthermore, the assembly of the cabinets is relatively convenient. In one possible embodiment, the switchgear is a 17.5kV switchgear.

[0045] Specifically, such as Figure 1 and Figure 2As shown, the switchgear includes an instrument cabinet 100, a first functional cabinet 200, and a second functional cabinet 300. The first functional cabinet 200 includes a circuit breaker compartment 202. The instrument cabinet 100 is detachably mounted on top of the first functional cabinet 200, effectively reducing the overall footprint of the switchgear. Furthermore, secondary wiring within the instrument cabinet 100 can be completed on the ground before assembly, reducing operational complexity. The rear side of the first functional cabinet 200 has a first connecting part and a first positioning part. The second functional cabinet 300 includes a busbar compartment 301 and a cable compartment 301. The front side of the second functional cabinet 300 has a second connecting part and a second positioning part. The second connecting part is detachably connected to the first connecting part, and the second positioning part cooperates with the first positioning part to guide the connection between the second and first connecting parts.

[0046] The switchgear provided in this embodiment is assembled from an instrument cabinet 100, a first functional cabinet 200, and a second functional cabinet 300 via a detachable connection. Compared with the integral structure switchgear in the prior art, the volume of a single cabinet is smaller, making it easier to process, install, and transport. Furthermore, this configuration allows components within the switchgear to be installed separately in the instrument cabinet 100, the first functional cabinet 200, and the second functional cabinet 300 according to their functions. Firstly, this avoids workers entering confined spaces for installation, reducing the difficulty of component assembly. Secondly, components within the instrument cabinet 100, the first functional cabinet 200, and the second functional cabinet 300 can be assembled simultaneously by multiple workers, greatly improving assembly efficiency. Thirdly, if a component malfunctions, only the corresponding cabinet needs to be opened or removed for repair, eliminating the need to dismantle all cabinets, shortening maintenance time and reducing maintenance costs. Finally, for different customers, only the structure within the corresponding cabinet needs to be modified, without the need to remanufacture the entire switchgear, offering high flexibility.

[0047] In addition, by providing a first positioning part on the first functional cabinet 200 and a second positioning part on the second functional cabinet 300 that cooperates with the first positioning part, the assembly of the first connecting part on the first functional cabinet 200 and the second connecting part on the second functional cabinet 300 can be guided. This makes the relative position between the first connecting part and the second connecting part more accurate, reduces the connection difficulty between the first connecting part and the second connecting part, and thus reduces the assembly difficulty between the first functional cabinet 200 and the second functional cabinet 300, and improves the assembly efficiency between the first functional cabinet 200 and the second functional cabinet 300.

[0048] Optionally, see [link to relevant documentation] Figure 2In this embodiment, the first connecting part is a first connecting plate 210 disposed on both sides of the rear side of the first functional cabinet 200 in the width direction, and the first connecting part is provided with a plurality of first connecting holes. The second connecting part is a second connecting plate 310 disposed on both sides of the front side of the second functional cabinet 300 in the width direction, and the second connecting plate 310 is provided with second connecting holes corresponding one-to-one with the first connecting holes. Connectors are installed in the corresponding second connecting holes and first connecting holes to connect the first connecting plate 210 and the second connecting plate 310 together. The first connecting plate 210 and the second connecting plate 310 are connected by connectors to realize a detachable connection between the first functional cabinet 200 and the second functional cabinet 300. The structure is simple and easy to install and disassemble. Furthermore, the cooperation of the first positioning part on the first functional cabinet 200 and the second positioning part on the second functional cabinet 300 can make the first connecting holes and the second connecting holes accurately aligned, which facilitates the assembly of connectors and reduces the assembly difficulty between the first functional cabinet 200 and the second functional cabinet 300.

[0049] Alternatively, the connector can be a bolt and nut assembly.

[0050] Furthermore, the first positioning part and the second positioning part are connected by a snap-fit ​​mechanism. This snap-fit ​​connection allows for pre-installation between the first functional cabinet 200 and the second functional cabinet 300, resulting in a simple structure and low assembly difficulty.

[0051] Optionally, such as Figures 3-8 As shown, the first positioning part includes an assembly hole 220 and a limiting hole 230 that are interconnected, and the second positioning part includes a third connecting part 320 and a limiting part 330. The two ends of the third connecting part 320 are connected to the front side of the second functional cabinet 300 and the limiting part 330. Specifically, the limiting part 330 passes through the assembly hole 220 so that the third connecting part 320 enters the limiting hole 230, and when the third connecting part 320 enters the limiting hole 230, it abuts against the inner side of the rear side of the first functional cabinet 200.

[0052] To facilitate understanding, a brief introduction to the cooperation between the first positioning unit and the second positioning unit will be given below:

[0053] First, the second functional cabinet 300 is lifted and moved so that the limiting part 330 passes through the assembly hole 220 and enters the first functional cabinet 200. At this time, the third connecting part 320 passes through the assembly hole 220.

[0054] Then, the second functional cabinet 300 is moved so that the third connecting part 320 enters the limiting hole 230. At this time, the limiting part 330 abuts against the inner side of the rear side of the first functional cabinet 200.

[0055] Finally, the hoisting of the second functional cabinet 300 can be removed.

[0056] Understandably, the limiting part 330 cannot pass through the limiting hole 230 in order to ensure a reliable limiting effect.

[0057] The structure of the first positioning part and the second positioning part provided in this embodiment can not only pre-assemble the first functional cabinet 200 and the second functional cabinet 300 to guide the connection between the first connecting part and the second connecting part, but also limit the movement of the first functional cabinet 200 and the second functional cabinet 300, thereby improving the connection strength between the first functional cabinet 200 and the second functional cabinet 300.

[0058] Optionally, such as Figures 3-5 As shown, in one possible embodiment, both the assembly hole 220 and the limiting hole 230 are elongated, both the third connecting portion 320 and the limiting portion 330 are plate-shaped, and the limiting portion 330 and the third connecting portion 320 are arranged at an angle.

[0059] Optionally, such as Figures 6-8 As shown, in another possible embodiment, both the assembly hole 220 and the limiting hole 230 are round holes, the second positioning part is a bolt, the head of the bolt is the limiting part 330, and the shank of the bolt is the third connecting part 320.

[0060] Furthermore, the assembly hole 220 can be located above the limiting hole 230. This arrangement serves two purposes: firstly, during the installation of the second functional cabinet 300 onto the first functional cabinet 200, the second functional cabinet 300 can move its third connecting part 320 of the second positioning part into the limiting hole 230 under the influence of gravity, facilitating the assembly of the second functional cabinet 300 and the first functional cabinet 200; secondly, the engagement between the second positioning part and the first positioning part can only be released when the second functional cabinet 300 is lifted, improving the reliability of the engagement between the first positioning part and the second positioning part, thereby improving the reliability of the assembly between the first functional cabinet 200 and the second functional cabinet 300.

[0061] Optionally, the first positioning part is disposed on the top and / or bottom of the rear side of the first functional cabinet 200, and the second positioning part is disposed on the top and / or bottom of the front side of the second functional cabinet 300, with the second positioning part corresponding to the first positioning part one-to-one. This arrangement improves the connection strength between the first functional cabinet 200 and the second functional cabinet 300 at the top and / or bottom.

[0062] Exemplarily, in one possible embodiment, the first positioning part is disposed on the top of the rear side of the first functional cabinet 200, and the second positioning part is disposed on the top of the front side of the second functional cabinet 300. In another possible embodiment, the first positioning part is disposed on the bottom of the rear side of the first functional cabinet 200, and the second positioning part is disposed on the bottom of the front side of the second functional cabinet 300. In other embodiments, the first positioning part is provided at both the top and bottom of the rear side of the first functional cabinet 200, and the second positioning part is provided at both the top and bottom of the front side of the second functional cabinet 300.

[0063] Further, see also Figure 1 and Figure 2 The top of the first functional cabinet 200 has a stepped structure 201. The stepped structure 201 includes a first step surface 2011 near the front side of the first functional cabinet 200, a second step surface 2012 near the rear side of the first functional cabinet 200, and a vertical plate 2013 connecting the first step surface 2011 and the second step surface 2012. The second step surface 2012 is higher than the first step surface 2011. The instrument cabinet 100 is installed on the first step surface 2011, and the back panel of the instrument cabinet 100 is connected to the vertical plate 2013. This arrangement allows the stepped structure 201 to surround the bottom and back of the instrument cabinet 100, which not only makes it easier for staff to quickly find the installation position of the instrument cabinet 100, but also improves the installation stability of the instrument cabinet 100.

[0064] Optionally, the base plate of the instrument cabinet 100 can also be connected to the first step surface 2011.

[0065] Optionally, the back panel and the upright panel 2013 of the instrument cabinet 100 can be connected by bolts, which is simple in structure and easy to install and disassemble.

[0066] Alternatively, the base plate of the instrument cabinet 100 can also be connected to the first step surface 2011 by bolts.

[0067] Optionally, the width of the instrument cabinet 100 is equal to the width of the first step surface 2011, which improves the aesthetics of the switch cabinet.

[0068] Further, see also Figure 1 and Figure 2 A top cover 240 is provided on the second step surface 2012, and the top of the top cover 240 is flush with the top of the second functional cabinet 300. By setting the top cover 240, on the one hand, the height of the first functional cabinet 200 can be reduced, which facilitates the transportation of the first functional cabinet 200; on the other hand, it makes the overall appearance of the switch cabinet more aesthetically pleasing.

[0069] Further, see also Figure 1The cable compartment 302 in the second functional cabinet 300 is located below the busbar compartment 301, and the busbar compartment 301 is positioned opposite the circuit breaker compartment 202 in the first functional cabinet 200. Positioning the circuit breaker compartment 202 opposite the busbar compartment 301 helps maintain the original cabinet structure as much as possible, ensuring the integrity of each compartment without altering the original positions of components, thus reducing the processing difficulty of the switchgear.

[0070] Optionally, the first functional cabinet 200 also includes a lower compartment 203 located below the circuit breaker compartment 202, opposite to the cable compartment 302. This arrangement allows the lower compartment 203 to share some of the cable load when there are many cables in the cable compartment 302. Of course, the lower compartment 203 can also be used to house other components, such as voltage transformers, depending on actual needs.

[0071] Optionally, see [link to relevant documentation] Figure 1 In this embodiment, the first functional cabinet 200 is provided with a first partition 250 to divide the first functional cabinet 200 into a circuit breaker compartment 202 and a lower compartment 203, and the second functional cabinet 300 is provided with a second partition 340 to divide the second functional cabinet 300 into a busbar compartment 301 and a cable compartment 302. The first functional cabinet 200 is divided into compartments by the first partition 250, and the second functional cabinet 300 is divided into compartments by the second partition 340. The structure is simple and easy to process and assemble.

[0072] Furthermore, such as Figure 9 As shown, a first fan 410 is installed on the top of the first functional cabinet 200, located behind the instrument cabinet 100. A second fan 420, opposite the first fan 410, is installed at the bottom of the circuit breaker compartment 202. A third fan 430 is installed on the top of the second functional cabinet 300. Because the circuit breaker in the circuit breaker compartment 202 generates a significant amount of heat during operation, the second fan at the bottom of the circuit breaker compartment 202 helps to quickly reduce the heat of the circuit breaker. When the first fan 410, second fan 420, and third fan 430 are not activated, the switchgear can operate at a current of 3150A, using natural air cooling. When the first fan 410, second fan 420, and third fan 430 are activated, it can operate at a current of 3600A.

[0073] Simulations and experiments have shown that the configuration and placement of the first fan 410, the second fan 420, and the third fan 430 can significantly reduce the temperature rise of the switchgear.

[0074] Optionally, multiple third fans 430 can be provided to improve the heat dissipation effect on the second functional cabinet 300. In this embodiment, two third fans 430 are provided, and the two third fans 430 are arranged side by side.

[0075] In this embodiment, the first fan 410 is disposed on the top of the top cover 240. The second fan 420 is disposed on the first partition 250.

[0076] Optionally, see [link to relevant documentation] Figure 1 In one possible embodiment, the busbar compartment 301 is provided with a wall bushing 3011 and an insulator 3012.

[0077] Further, see also Figure 2 A contact box assembly 260 and a grounding switch assembly 270 are installed on the rear side of the first functional cabinet 200. At least a portion of the contact box assembly 260 and the grounding switch assembly 270 are located on the outer side of the rear side of the first functional cabinet 200. An opening 350 is provided on the front side of the second functional cabinet 300, through which at least a portion of the contact box assembly 260 and the grounding switch assembly 270 enters the second functional cabinet 300. This arrangement allows some components of the contact box assembly 260 and the grounding switch assembly 270 to be pre-assembled in the space outside the cabinet before being installed on the first functional cabinet 200, facilitating assembly. Furthermore, the cooperation between the opening 350 and the contact box assembly 260 and the grounding switch assembly 270 also provides a certain guiding effect for the assembly between the second functional cabinet 300 and the first functional cabinet 200.

[0078] Understandably, the contacts of the contact box assembly 260 are located inside the first functional cabinet 200 so as to make contact with the contacts on the circuit breaker inside the first functional cabinet 200.

[0079] Optionally, see [link to relevant documentation] Figure 1 The rear side of the first functional cabinet 200 is provided with a door mechanism 290, which cooperates with the contact box assembly 260.

[0080] Optionally, see [link to relevant documentation] Figure 1 In this embodiment, the grounding switch assembly 270 includes a rotating shaft 271, a stationary contact 272, and a moving contact 273. The rotating shaft 271 is rotatably disposed inside the first functional cabinet 200. One end of the rotating shaft 271 extends out of the rear side of the first functional cabinet 200 and is connected to the moving contact 273. The stationary contact 272 is disposed on the outer side of the rear side of the first functional cabinet 200. Rotating the rotating shaft 271 can make the moving contact 273 contact or separate from the stationary contact 272, so as to realize the closing and opening of the grounding switch assembly 270.

[0081] Further, see also Figure 1 and Figure 2On the rear side of the first functional cabinet 200, above the contact box assembly 260, a first current transformer group 280 is provided, and inside the second functional cabinet 300, a second current transformer group 360 is provided. This arrangement helps to save installation space, facilitates the layout of copper busbars inside the switch cabinet, and effectively reduces partial discharge values.

[0082] In this embodiment, the first current transformer group 280 can be wall-mounted, and the second current transformer group 360 can be suspended. Specifically, the first current transformer group 280 is hung on the rear side of the first functional cabinet 200, and the second current transformer group 360 is suspended on the second partition 340 and located inside the cable compartment 302.

[0083] Optionally, the first current transformer group 280 may include three current transformers, which may be arranged in a straight line or in a triangular arrangement. Similarly, the second current transformer group 360 may also include three current transformers, which may be arranged in a straight line or in a triangular arrangement.

[0084] Optionally, in one possible embodiment, the length, width, and height of the switch cabinet are 1000mm, 1750mm, and 2240mm, respectively.

[0085] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A switch cabinet, characterized in that, include: Instrument cabinet (100); The first functional cabinet (200) includes a circuit breaker compartment (202), and the instrument cabinet (100) is detachably installed on the top of the first functional cabinet (200). The rear side of the first functional cabinet (200) is provided with a first connecting part and a first positioning part. The second functional cabinet (300) includes a busbar compartment (301) and a cable compartment (302). The front side of the second functional cabinet (300) is provided with a second connecting part and a second positioning part. The second connecting part is detachably connected to the first connecting part. The second positioning part cooperates with the first positioning part to guide the connection between the second connecting part and the first connecting part. The first positioning part includes an assembly hole (220) and a limiting hole (230) that are interconnected. The second positioning part includes a third connecting part (320) and a limiting part (330). The two ends of the third connecting part (320) are connected to the front side of the second functional cabinet (300) and the limiting part (330). The limiting part (330) passes through the assembly hole (220) to allow the third connecting part (320) to enter the limiting hole (230), and when the third connecting part (320) enters the limiting hole (230), it abuts against the inner side of the rear side of the first functional cabinet (200).

2. The switchgear according to claim 1, characterized in that, The first positioning part is located on the top and / or bottom of the rear side of the first functional cabinet (200), and the second positioning part is located on the top and / or bottom of the front side of the second functional cabinet (300). The second positioning part is provided in a one-to-one correspondence with the first positioning part.

3. The switchgear according to claim 1, characterized in that, The first connecting part is a first connecting plate (210) disposed on both sides of the rear side of the first functional cabinet (200) in the width direction. The first connecting part is provided with a plurality of first connecting holes. The second connecting part is a second connecting plate (310) disposed on both sides of the front side of the second functional cabinet (300) in the width direction. The second connecting plate (310) is provided with second connecting holes that correspond one-to-one with the first connecting holes. Connectors are installed in the corresponding second connecting holes and the first connecting holes to connect the first connecting plate (210) and the second connecting plate (310) together.

4. The switchgear according to claim 1, characterized in that, The top of the first functional cabinet (200) has a stepped structure (201). The stepped structure (201) includes a first step surface (2011) near the front side of the first functional cabinet (200), a second step surface (2012) near the rear side of the first functional cabinet (200), and a vertical plate (2013) connecting the first step surface (2011) and the second step surface (2012). The second step surface (2012) is higher than the first step surface (2011). The instrument cabinet (100) is installed on the first step surface (2011). The back panel of the instrument cabinet (100) is connected to the vertical plate (2013).

5. The switchgear according to claim 4, characterized in that, A top cover (240) is provided on the second step surface (2012), and the top of the top cover (240) is flush with the top of the second functional cabinet (300).

6. The switchgear according to claim 1, characterized in that, The first functional cabinet (200) is provided with a first fan (410) on the top, and the first fan (410) is located behind the instrument cabinet (100). The bottom of the circuit breaker compartment (202) is provided with a second fan (420) opposite to the first fan (410), and the top of the second functional cabinet (300) is provided with a third fan (430).

7. The switchgear according to any one of claims 1-6, characterized in that, A contact box assembly (260) and a grounding switch assembly (270) are installed on the rear side of the first functional cabinet (200). At least a portion of the contact box assembly (260) and the grounding switch assembly (270) are located on the outer side of the rear side of the first functional cabinet (200). An opening (350) is provided on the front side of the second functional cabinet (300). At least a portion of the contact box assembly (260) and the grounding switch assembly (270) enter the second functional cabinet (300) through the opening (350).

8. The switch cabinet according to claim 7, characterized in that, On the rear side of the first functional cabinet (200), above the contact box assembly (260), a first current transformer group (280) is provided, and inside the second functional cabinet (300) a second current transformer group (360) is provided.

9. The switchgear according to any one of claims 1-6, characterized in that, The first functional cabinet (200) also includes a lower compartment (203), which is located below the circuit breaker compartment (202) and opposite to the cable compartment (302).

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