Three-phase common-tank isolated grounding switch and GIS switch device
By using a three-phase common enclosure design, the grounding component and the isolation component are fixed to different side walls of the enclosure, and the moving contact component is connected to the grounding end and the isolation end. This solves the problems of high assembly precision and large space occupation of existing isolation grounding switches, and realizes miniaturization and standardized production.
Patent Information
- Application Number
- CN202521443284.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-10
- Publication Date
- 2026-06-26
- Estimated Expiration
- 2035-07-10
AI Technical Summary
Existing isolating grounding switches require high precision during assembly and occupy a large internal space, hindering their miniaturization.
The three-phase common enclosure design is adopted, with the grounding component and the isolation component fixed to different side walls of the housing respectively. The moving contact component is connected to the grounding terminal and the isolation terminal through the moving part. The static electrode is pre-installed with insulating parts, which optimizes the space layout and reduces the assembly difficulty.
This has enabled the miniaturization of the isolating grounding switch, reducing assembly and maintenance difficulties, and improving production efficiency and product standardization.
Smart Images
Figure CN224417689U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of high voltage switchgear technology, and in particular to a three-phase common-enclosure type isolating grounding switch and GIS switchgear. Background Technology
[0002] The isolating grounding switch includes an isolating switch and a grounding switch. In GIS, it can carry normal operating current and short-circuit current, but it cannot be used to interrupt normal operating current and short-circuit fault current. Its main functions are maintenance, sectional isolation, line switching, and switching of unloaded lines. When the isolating switch and the grounding switch are used together, they can also automatically and quickly isolate faulty equipment and lines.
[0003] In actual assembly, existing isolating grounding switches still require the stationary and moving contacts located inside the housing to be fixed sequentially to the inner wall of the housing. This requires high assembly precision and necessitates reserving a working surface inside the housing for assembly. This occupies the internal space of the isolating grounding switch and hinders its miniaturization. Utility Model Content
[0004] Given the problem of large size caused by unreasonable internal space layout of existing isolating grounding switches, it is necessary to provide a three-phase common-enclosure isolating grounding switch and GIS switchgear.
[0005] According to one aspect of this application, a three-phase common-enclosure type isolating grounding switch is provided, comprising:
[0006] The housing has a first sidewall and a second sidewall arranged adjacent to each other, the first sidewall and the second sidewall having different orientations;
[0007] A grounding assembly is located between the first sidewall and the second sidewall and is fixedly connected to the housing, the grounding assembly having a grounding terminal located inside the housing;
[0008] An isolation component, located within the housing and fixed to the second sidewall, has an isolation end;
[0009] The moving contact assembly includes a fixed portion located within the housing and fixed to the first sidewall, and a movable portion movably mounted on the fixed portion. The movable portion is electrically connected to the fixed portion, and the movable portion has a first movable end for engaging the grounding terminal and a second movable end for engaging the isolation terminal.
[0010] In this way, by rationally arranging the grounding component, isolation component, and moving contact component on the housing, this application enables the isolating grounding switch to achieve basic grounding and isolation functions while also taking into account the need for miniaturization. Specifically, the grounding component and the isolation component are fixed to two side walls facing different directions. In other words, the isolating grounding switch provided by this application integrates the components related to the isolation and grounding functions in the corner of the grounding component in the housing, reserving space for the arrangement of other components, optimizing the internal spatial layout of the housing, and promoting the miniaturization of the isolating grounding switch.
[0011] In one embodiment, the housing has a first mounting hole located on the first sidewall, and the fixing part includes a first insulating member sealed in the first mounting hole and a support electrode fixed to the first insulating member;
[0012] The housing has a second mounting hole located on the second sidewall, and the isolation assembly includes a second insulating member sealed in the second mounting hole and a static electrode fixed to the second insulating member and providing the isolation end.
[0013] With this configuration, in this application, the stationary electrode used to connect the moving contact assembly is fixed to the second insulating member, and the second insulating member is used to block the second mounting hole. This means that the stationary electrode can be pre-installed on the second insulating member and fixed in a preset position in the housing at the same time as the second insulating member is assembled. There is no need to consider pre-fixing the stationary electrode in other insulating brackets in the housing before sealing the second mounting hole, which reduces the assembly and maintenance difficulty of high-altitude operations.
[0014] In one embodiment, the housing is further provided with a third mounting hole arranged opposite to the first mounting hole and a fourth mounting hole arranged opposite to the second mounting hole;
[0015] The three-phase common-enclosure type isolating grounding switch also includes a third insulating component sealed in the third mounting hole and a fourth insulating component sealed in the fourth mounting hole.
[0016] This configuration, with the opening of the third and fourth mounting holes, helps to expand the function of the isolating grounding switch, thereby meeting the corresponding needs in special circumstances, such as potential maintenance and testing requirements. In addition, the arrangement of the third and fourth mounting holes also provides observation windows, which facilitates the detection of the positional fit of these parts after the above-mentioned grounding components, isolating components and moving contact components are assembled on the housing, thereby assisting in real-time adjustment or replacement and shortening the product production cycle.
[0017] In one embodiment, the support electrode has a track groove; the movable part includes a movable electrode movably mounted in the track groove and providing a first movable end and a second movable end, and a driving member connected to the movable electrode.
[0018] This configuration, by using the track groove to restrict the movement trajectory of the moving electrode, helps to improve the positional accuracy of the connection between the first moving end and the grounding end, and the connection between the second moving end and the isolation end, and helps to reduce the generation of electric arc inside the disconnecting switch.
[0019] In one embodiment, the driving element is a drive shaft rotatably mounted on the support electrode and a gear fixed to the drive shaft;
[0020] The moving electrode has a rack region that meshes with the gear.
[0021] In this way, the meshing of the rack and pinion further improves the positional accuracy of the moving electrode, making it easier to quantitatively control the displacement of the moving electrode.
[0022] In one embodiment, the grounding component has a first slot located at the grounding end and cooperating with the moving electrode, and the isolation component has a second slot located at the isolation end and cooperating with the moving electrode, wherein the first slot and the second slot are equidistant from the drive shaft.
[0023] This configuration, by arranging the first slot and the second slot at the grounding end and the isolation end respectively, ensures that the moving electrode is fully in contact with the grounding end and the isolation end at the grounding position and the isolation position respectively, which helps to reduce the generation of electric arc. On the other hand, the two slots can also be used to detect whether the preset assembly position between the grounding component, the isolation component and the moving electrode is accurate.
[0024] In one embodiment, the first insulating element and / or the second insulating element is a basin insulator.
[0025] This setup, using basin-type insulators, a standard insulating component with excellent insulation properties, facilitates the standardized assembly of isolating grounding switches and shortens product assembly time.
[0026] In one embodiment, the grounding component further has three first interfaces arranged at linear intervals; and / or
[0027] The isolation component has three second interfaces, and the arrangement of the three second interfaces is the same as the arrangement direction of the three first interfaces.
[0028] The moving contact assembly has three third interfaces, and the arrangement of the three third interfaces is the same as the arrangement of the three first interfaces.
[0029] This configuration, by arranging the three interfaces corresponding to the three-phase power in a linear fashion, facilitates the use of three sets of identical electrodes, which helps to reduce the types of components in the isolating grounding switch, promotes the standardization of electrode parts, reduces the difficulty of component management, and also facilitates maintenance.
[0030] In one embodiment, when the first active terminal contacts the grounding terminal, the second active terminal disconnects from the isolation terminal, and the three-phase common-box type isolating grounding switch is in a grounded state;
[0031] When the second active terminal is connected to the isolation terminal, the first active terminal is disconnected from the grounding terminal, and the three-phase common-box type isolating grounding switch is in an isolated state.
[0032] This configuration indicates that by pre-setting different stopping positions for the moving electrode, this application enables the moving electrode to contact the grounding terminal or the isolation terminal, thereby realizing the basic functions of isolation and grounding of the isolation grounding switch.
[0033] According to another aspect of this application, this application also provides a GIS switchgear, comprising:
[0034] Such as the three-phase common-enclosure type isolating grounding switch mentioned above; and
[0035] The control component is electrically connected to the three-phase common-enclosure isolating grounding switch.
[0036] With this setup, the standardization of GIS switchgear is improved by adopting the aforementioned three-phase common-enclosure isolating grounding switch. The reduced size of the isolating grounding switch also facilitates the arrangement of other components within the GIS switchgear. Attached Figure Description
[0037] Figure 1 This application provides a schematic diagram of the structure of a three-phase common-enclosure type isolating grounding switch in one embodiment.
[0038] Figure 2 for Figure 1 The side view of the three-phase common-enclosure type isolating grounding switch shown;
[0039] Figure 3 for Figure 2 The three-phase common-enclosure isolating grounding switch shown is a cross-sectional view along the AA direction;
[0040] Figure 4 for Figure 1 The diagram shows a plan view of a three-phase common-enclosure type isolating grounding switch.
[0041] Figure label:
[0042] 10. Housing; 11. First sidewall; 12. Second sidewall; 101. First mounting hole; 102. Second mounting hole; 103. Third mounting hole; 104. Fourth mounting hole; 105. Boss structure; 20. Grounding assembly; 201. Grounding end; 202. First slot; 203. First interface; 21. Grounding base; 22. Support member; 30. Isolation assembly; 301. Isolation end; 302. Second slot; 303. Second interface; 304. Fourth interface; 31. Second insulating member; 32. Static electrode; 40. Moving contact assembly; 401. First movable end; 402. Second movable end; 403. Third interface; 41. Fixing part; 411. First insulating member; 412. Support electrode; 42. Movable part; 421. Moving electrode; 422. Driving member; 4221. Gear; 4222. Drive shaft; 50. Control assembly. Detailed Implementation
[0043] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.
[0044] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0045] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0046] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0047] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0048] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0049] The isolating grounding switch includes an isolating switch and a grounding switch. In GIS, it can carry normal operating current and short-circuit current, but it cannot be used to interrupt normal operating current and short-circuit fault current. Its main functions are maintenance, sectional isolation, line switching, and switching of unloaded lines. When the isolating switch and the grounding switch are used together, they can also automatically and quickly isolate faulty equipment and lines.
[0050] In actual assembly, existing isolating grounding switches still require the stationary and moving contacts located inside the housing to be fixed sequentially to the inner wall of the housing. This requires high assembly precision and necessitates reserving a working surface inside the housing for assembly. This occupies the internal space of the isolating grounding switch and hinders its miniaturization.
[0051] Therefore, it is necessary to provide a three-phase common-enclosure isolating grounding switch and GIS switchgear that is small in size, easy to assemble, and conducive to standardized production.
[0052] Please see Figure 1 , Figure 2 and Figure 3 , Figure 1 This is a schematic diagram of the structure of a three-phase common-enclosure type isolating grounding switch in one embodiment provided in this application. Figure 2 for Figure 1 The side view of the three-phase common-enclosure type isolating grounding switch shown is shown. Figure 3 for Figure 2 The diagram shows a cross-sectional view of a three-phase common-enclosure type isolating grounding switch along the AA direction. In one embodiment provided in this application, the three-phase common-enclosure type isolating grounding switch includes a housing 10, a grounding assembly 20, an isolation assembly 30, and a moving contact assembly 40. The housing 10 has a first sidewall 11 and a second sidewall 12 arranged adjacent to each other, with different orientations. The grounding assembly 20 is located between the first sidewall 11 and the second sidewall 12 and is fixedly connected to the housing 10. The grounding assembly 20 has a grounding end 201 located within the housing 10. The isolation assembly 30 is located within the housing 10 and fixedly connected to the second sidewall 12, and has an isolation end 301. The moving contact assembly 40 includes a fixed portion 41 located within the housing 10 and fixedly connected to the first sidewall 11, and a movable portion 42 movably mounted on the fixed portion 41. The movable portion 42 is electrically connected to the fixed portion 41 and has a first movable end 401 for engaging the grounding end 201 and a second movable end 402 for engaging the isolation end 301. When the first movable terminal 401 contacts the grounding terminal 201, the second movable terminal 402 disconnects from the isolation terminal 301, and the three-phase common-enclosure type isolating grounding switch is in a grounded state; when the second movable terminal 402 connects to the isolation terminal 301, the first movable terminal 401 disconnects from the grounding terminal 201, and the three-phase common-enclosure type isolating grounding switch is in an isolated state, thus realizing the basic function of the isolating grounding switch. This application achieves the basic grounding and isolation functions of the isolating grounding switch by rationally arranging the grounding component 20, the isolation component 30, and the moving contact component 40 on the housing 10, while also considering the need for miniaturization. Specifically, the grounding component 20 and the isolation component 30 are fixed to two side walls facing different directions. In other words, the isolating grounding switch provided by this application integrates components related to the isolation and grounding functions in the corner of the grounding component 20 within the housing 10, reserving space for the arrangement of other components, optimizing the internal spatial layout of the housing 10, and promoting the miniaturization of the isolating grounding switch.
[0053] like Figure 3As shown, further considering the harshness of the high-altitude working environment, this application also specifically defines the housing 10, grounding component 20, and isolation component 30 in the isolating grounding switch: the housing 10 has a first mounting hole 101 located on the first side wall 11 and a second mounting hole 102 located on the second side wall 12; the fixing part 41 includes a first insulating member 411 sealed in the first mounting hole 101 and a support electrode 412 fixed to the first insulating member 411; the isolation component 30 includes a second insulating member 31 sealed in the second mounting hole 102 and a stationary electrode 32 fixed to the second insulating member 31 and providing an isolation end 301. This means that the stationary electrode 32 can be pre-installed on the second insulating member 31 and simultaneously fixed in a preset position within the housing 10 when the second insulating member 31 is assembled, without needing to first pre-fix the stationary electrode 32 to other insulating supports within the housing 10 before sealing the second mounting hole 102, thus reducing the assembly and maintenance difficulties of high-altitude operations. Optionally, in one embodiment provided in this application, the grounding end 201, the first movable end 401, the second movable end 402, and the isolation end 301 are arranged coaxially. The axis coincides with the track extension direction of the track groove. The axis extends from the grounding end 201 into the interior of the housing 10 and forms an angle with the first sidewall 11 and the second sidewall 12 on both sides. In this way, the advantage of the large spacing in the diagonal direction inside the housing 10 is fully utilized, the layout is compact, and it is convenient to arrange more types of moving contacts.
[0054] like Figure 1 As shown, considering subsequent product upgrades and convenient testing and maintenance, in the embodiment provided in this application, the housing 10 also has a third mounting hole 103 arranged opposite to the first mounting hole 101 and a fourth mounting hole 104 arranged opposite to the second mounting hole 102; the three-phase common-box type isolating grounding switch also includes a third insulating component sealed in the third mounting hole 103 and a fourth insulating component sealed in the fourth mounting hole 104. The opening of these two holes helps to expand the function of the isolating grounding switch, thereby meeting the corresponding needs in special cases, such as potential maintenance and testing needs, etc. In addition, the arrangement of the third mounting hole 103 and the fourth mounting hole 104 also provides an observation window, which facilitates the detection of the positional fit accuracy of these parts after assembling the above-mentioned grounding component 20, isolation component 30 and moving contact component 40 on the housing 10, thereby assisting in real-time adjustment or replacement and shortening the product production cycle. Optionally, in one embodiment provided in this application, the housing 10 also has a boss structure 105, which also has a through hole for hoisting.
[0055] Further reference Figure 3To improve the positional accuracy of the moving electrode 421, the supporting electrode 412 has a track groove. The movable part 42 includes the moving electrode 421, which is movably mounted in the track groove and provides a first movable end 401 and a second movable end 402, and a driving member 422 connected to the moving electrode 421. In this way, by using the track groove to restrict the movement trajectory of the moving electrode 421, it is beneficial to improve the positional accuracy of the first movable end 401 docking with the grounding end 201 and the second movable end 402 docking with the isolation end 301, and to reduce the generation of electric arc inside the disconnecting switch. Specifically, in order to facilitate the quantitative control of the displacement of the moving electrode 421, in this embodiment, the driving member 422 is a drive shaft 4222 rotatably mounted on the supporting electrode 412 and a gear 4221 fixed to the drive shaft 4222. The moving electrode 421 has a rack area that meshes with the gear 4221.
[0056] Please continue to refer to this. Figure 3 In one real-time configuration provided in this application, the grounding component 20 has a first slot 202 located at the grounding end 201 and cooperating with the moving electrode 421, and the isolation component 30 has a second slot 302 located at the isolation end 301 and cooperating with the moving electrode 421. The first slot 202 and the second slot 302 are equidistant from the drive shaft 4222. By configuring the first slot 202 and the second slot 302 at the grounding end 201 and the isolation end 301 respectively, on the one hand, the moving electrode 421 is fully engaged with the grounding end 201 and the isolation end 301 at the grounding position and the isolation position respectively, which helps to reduce the generation of electric arcs. On the other hand, the two slots can also be used to detect whether the preset assembly positions of the grounding component 20, the isolation component 30, and the moving electrode 421 are accurate.
[0057] In one embodiment provided in this application, the first insulating member 411 and / or the second insulating member 31 adopts a basin-type insulator, which is a standard insulating component with good insulation performance. This is beneficial to promoting the standardized assembly of the isolating grounding switch and shortening the product assembly time.
[0058] Please refer to the following: Figure 2 and Figure 4 , Figure 4 for Figure 1 The diagram shows a plan view of a three-phase common-enclosure type isolating grounding switch. In one embodiment provided in this application, the grounding component 20 further has three first interfaces 203 arranged at linear intervals, the isolating component 30 has three second interfaces 303, and the moving contact component 40 has three third interfaces 403. The arrangement of the three second interfaces 303 is the same as the arrangement of the three first interfaces 203; the arrangement of the three third interfaces 403 is also the same as the arrangement of the three first interfaces 203. Further reference... Figure 1 and Figure 3In this embodiment, the arrangement direction is the same as the extension direction of the drive shaft 4222. By arranging the three interfaces corresponding to the three-phase power in a linear fashion, it is convenient to use three sets of identical electrodes, which helps to reduce the types of components in the isolating grounding switch, promotes the standardization of the electrode 421 parts, reduces the difficulty of component management, and facilitates maintenance. The parallel arrangement of the three interfaces is also more in line with common sense in electrical engineering specifications, making it easier for operators to identify. Figure 2 As shown, the isolation assembly 30 is also provided with a fourth interface 304 located on the static electrode 32. This fourth interface 304 is a spare interface and is mainly used to accommodate incoming and outgoing lines in other directions.
[0059] like Figure 1 and Figure 3 As shown, the grounding assembly 20 includes a grounding base 21 and a support member 22 that provides a grounding terminal 201 and a first interface 203. The grounding base 21 is specifically made of epoxy resin and is wrapped around the support member 22 by vacuum forming.
[0060] For example, in the actual assembly of the three-phase common-enclosure type isolating grounding switch provided in this application, the second insulating part 31 and the stationary electrode 32 of the isolating component 30 can be pre-assembled first, and then the second insulating part 31 with the stationary electrode 32 can be directly fixed to the second mounting hole 102 through the flange. The moving contact assembly 40 is the same. The moving part 42 and the support electrode 412 are pre-installed to the first insulating part 411, and then the first insulating part 411 is directly installed into the first mounting hole 101. After these two components are assembled into the housing 10, it is possible to preliminarily check whether the isolating end 301 and the moving electrode 421 are in the preset position, and then the grounding component 20 is assembled. Alternatively, the grounding assembly can also be pre-assembled with the housing 10, and then other parts are assembled. As can be seen from the above assembly process, by designing the layout of the isolating component 30, the grounding component 20 and the moving contact assembly 40, the steps in the actual assembly process can be reduced. It is understandable that this also facilitates replacement during maintenance, especially for high-altitude operations in emergency situations, reducing the maintenance difficulty for operators.
[0061] According to another aspect of this application, this application also provides a GIS switchgear, including a three-phase common-enclosure type isolating grounding switch and a control component 50 electrically connected to the three-phase common-enclosure type isolating grounding switch. By adopting the aforementioned three-phase common-enclosure type isolating grounding switch, the product standardization of the GIS switchgear is improved, and the reduced size of the isolating grounding switch facilitates the arrangement of other components within the GIS switchgear.
[0062] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0063] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A three-phase common-tank isolated grounding switch, characterized in that, include: The housing (10) has a first sidewall (11) and a second sidewall (12) arranged adjacent to each other, the first sidewall (11) and the second sidewall (12) having different orientations; A grounding assembly (20) is located between the first sidewall (11) and the second sidewall (12) and is fixedly connected to the housing (10). The grounding assembly (20) has a grounding terminal (201) located inside the housing (10). An isolation component (30) is located inside the housing (10) and fixed to the second sidewall (12), and has an isolation end (301). The moving contact assembly (40) includes a fixed part (41) located inside the housing (10) and fixed to the first side wall (11) and a movable part (42) movably mounted on the fixed part (41). The movable part (42) is electrically connected to the fixed part (41). The movable part (42) has a first movable end (401) for docking with the grounding terminal (201) and a second movable end (402) for docking with the isolation terminal (301).
2. The three-phase common-enclosure type isolating grounding switch according to claim 1, characterized in that, The housing (10) has a first mounting hole (101) located on the first side wall (11), and the fixing part (41) includes a first insulating member (411) sealed in the first mounting hole (101) and a support electrode (412) fixed to the first insulating member (411). The housing (10) has a second mounting hole (102) located on the second sidewall (12), and the isolation assembly (30) includes a second insulating member (31) sealed in the second mounting hole (102) and a static electrode (32) fixed to the second insulating member (31) and providing the isolation end (301).
3. The three-phase common-enclosure type isolating grounding switch according to claim 2, characterized in that, The housing (10) is also provided with a third mounting hole (103) arranged opposite to the first mounting hole (101) and a fourth mounting hole (104) arranged opposite to the second mounting hole (102). The three-phase common-enclosure type isolating grounding switch also includes a third insulating element sealed in the third mounting hole (103) and a fourth insulating element sealed in the fourth mounting hole (104).
4. The three-phase common-enclosure type isolating grounding switch according to claim 2, characterized in that, The support electrode (412) has a track groove; the movable part (42) includes a moving electrode (421) that is movably installed in the track groove and provides a first movable end (401) and a second movable end (402), and a driving member (422) that is connected to the moving electrode (421).
5. The three-phase common-enclosure type isolating grounding switch according to claim 4, characterized in that, The driving component (422) is a drive shaft (4222) rotatably mounted on the support electrode (412) and a gear (4221) fixed to the drive shaft (4222). The moving electrode (421) has a rack region that meshes with the gear (4221).
6. The three-phase common-enclosure type isolating grounding switch according to claim 5, characterized in that, The grounding component (20) has a first slot (202) located at the grounding end (201) and cooperating with the moving electrode (421), and the isolation component (30) has a second slot (302) located at the isolation end (301) and cooperating with the moving electrode (421). The first slot (202) and the second slot (302) are equidistant from the drive shaft (4222).
7. The three-phase common-enclosure type isolating grounding switch according to claim 2, characterized in that, The first insulating element (411) and / or the second insulating element (31) are pot-type insulators.
8. The three-phase common-enclosure type isolating grounding switch according to claim 1, characterized in that, The grounding component (20) also has three first interfaces (203) arranged at linear intervals; and / or The isolation component (30) has three second interfaces (303), and the arrangement of the three second interfaces (303) is the same as the arrangement direction of the three first interfaces (203); The moving contact assembly (40) has three third interfaces (403), and the arrangement of the three third interfaces (403) is the same as the arrangement of the three first interfaces (203).
9. The three-phase common-enclosure type isolating grounding switch according to claim 1, characterized in that, When the first active terminal (401) contacts the grounding terminal (201), the second active terminal (402) disconnects from the isolation terminal (301), and the three-phase common-box type isolation grounding switch is in the grounding state; When the second active terminal (402) is connected to the isolation terminal (301), the first active terminal (401) is disconnected from the grounding terminal (201), and the three-phase common-box type isolation grounding switch is in an isolated state.
10. A GIS switchgear, characterized in that, include: The three-phase common-enclosure type isolating grounding switch as described in any one of claims 1-9; The control component (50) is electrically connected to the three-phase common-enclosure isolating grounding switch.