CN201490077U - Indoor sulfur hexafluoride load switch-fuse combined electric appliance - Google Patents
Indoor sulfur hexafluoride load switch-fuse combined electric appliance Download PDFInfo
- Publication number
- CN201490077U CN201490077U CN2009201903791U CN200920190379U CN201490077U CN 201490077 U CN201490077 U CN 201490077U CN 2009201903791 U CN2009201903791 U CN 2009201903791U CN 200920190379 U CN200920190379 U CN 200920190379U CN 201490077 U CN201490077 U CN 201490077U
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- CN
- China
- Prior art keywords
- load switch
- fuse
- fixed contact
- sulfur hexafluoride
- lower cover
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model relates to an indoor sulfur hexafluoride load switch-fuse combined electric appliance, which consists of a load switch and a fuse. The load switch comprises an upper cover, a lower cover, a fixed contact, a movable contact, a movable connecting rod, a rotating shaft, an arc extinguishing grid and a spring manipulation mechanism; primarily, the fixed contact outside the upper cover is provided with a corrugated tube insulator; surface creepage distance between the upper end of the corrugated tube insulator and a metal mounting frame is 480 mm; the outer surface of the lower cover on the outer side of a lower conduction rod connected with the movable contact is provided with a plurality of layers of annular insulated grids to ensure that the surface creepage distance between the lower end of the lower conduction rod and the metal mounting frame reaches 480 mm; interphase distance between two adjacent phases is 275 mm; and the indoor sulfur hexafluoride load switch-fuse combined electric appliance has the advantages of high insulation level, and is suitable for a high-voltage power system of 24kV voltage level.
Description
Technical field
The utility model relates to a kind of switchgear, particularly about a kind of indoor ac high-voltage sulphur hexafluoride switch-fuse combination.The utility model is applicable to the control and the protection equipment of 24KV three-phase alternating current 50/60Hz looped network, biradial power supply unit and box-type substation.
Background technology
Indoor ac high-voltage sulphur hexafluoride switch-fuse combination is constituted by on-load switch and fuse, can cut-off any electric current until short circuit current, and on-load switch cut-offs operating current, and fuse cut-offs short circuit current.On-load switch is made up of fixed contact, moving contact, movable rod, rotating shaft, arc-chute, spring operating mechanism, its fixed contact, moving contact, arc-chute are installed in the switch gear room that is made up of loam cake and lower cover, be full of sulfur hexafluoride gas in the switch gear room, realize the folding operation of switch by the operating spring operating mechanism.Subject matter is: in the existing indoor ac high-voltage sulphur hexafluoride switch-fuse combination, the shortest creepage distance between the fixed contact of on-load switch and moving contact and the metal installing rack is 240mm, phase spacing is 210mm, its class of insulation is low, the electric power system of 12KV electric pressure can only be suitable for, and the high-voltage electric power system of 24KV electric pressure can not be suitable for.
Summary of the invention
The purpose of this utility model is the deficiency that exists at prior art, and a kind of class of insulation height is provided, and is suitable for the indoor sulphur hexafluoride switch-fuse combination of 24KV electric pressure.
The utility model is made up of on-load switch and fuse, on-load switch comprises loam cake, lower cover, fixed contact, moving contact, movable rod, rotating shaft, arc-chute, spring operating mechanism, its fixed contact, moving contact, arc-chute are installed in the switch gear room that is made up of loam cake and lower cover, fill sulfur hexafluoride gas in the switch gear room, moving contact connects conducting rod down, and fuse is fixedlyed connected with following conducting rod.Mainly be that the bellows insulator is set on the fixed contact outside loam cake, this bellows insulator upper end to the distance of the surface creepage between the metal installing rack is 480mm; Following exterior surface in the following conducting rod outside that connects moving contact is provided with the multi-layer annular insulated gate, and making down conducting rod lower end to the distance of the surface creepage between the metal installing rack is 480mm; Spaced apart between the adjacent two-phase is 275mm.
The utility model has the advantages that fixed contact, moving contact are 480mm to the distance of the surface creepage between the metal installing rack, the spaced apart between the adjacent two-phase is 275mm, and its class of insulation height can be used in the high pressure electrical power trans mission/distribution system of 24KV electric pressure.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the structural representation of the utility model when being installed on the three-phase ac power system mode.
Embodiment
Indoor sulphur hexafluoride switch-fuse combination as shown in Figure 1 is made up of on-load switch and fuse 11, on-load switch comprises loam cake 2, lower cover 3, fixed contact 14, moving contact 8, movable rod 5, rotating shaft 4, arc-chute 9, spring operating mechanism 10, its fixed contact 14, moving contact 8, arc-chute 9 are installed in the switch gear room that is made up of loam cake 2 and lower cover 3, fill sulfur hexafluoride gas in the switch gear room, moving contact 8 connects conducting rod 6 down, and fuse 11 is fixedlyed connected with following conducting rod 6.On the fixed contact 14 outside loam cake 2 bellows insulator 1 is set, this bellows insulator 1 upper end to the distance of the surface creepage between the metal installing rack 12 is 480mm, be that surface creepage distance between fixed contact 14 and the metal installing rack 12 is 480mm, improve the insulation property between fixed contact 14 and the metal installing rack 12.Lower cover 3 outer surfaces in following conducting rod 6 outsides that connect moving contact 8 are provided with multi-layer annular insulated gate 13, and making down conducting rod 6 lower ends to the distance of the surface creepage between the metal installing rack 12 is 480mm, improves the insulation property between moving contact 8 and the metal installing rack 12.Spaced apart between the adjacent two-phase is 275mm, improves the withstand voltage properties between the adjacent two-phase.Be provided with ground connection quiescent contacting knife 7 in lower cover 3, rotating shaft 4 clockwise rotates about 60 ° of moving contacts 8 fast and leaves fixed contact 14 separating brakes.Rotating shaft 4 continues to clockwise rotate, and moving contact 8 is contacted with ground connection quiescent contacting knife 7, realizes the maintenance of on-load switch ground connection.Loam cake 2, lower cover 3 are shaped by poured with epoxy resin.
Claims (1)
1. indoor sulphur hexafluoride switch-fuse combination, form by on-load switch and fuse (11), on-load switch comprises loam cake (2), lower cover (3), fixed contact (14), moving contact (8), movable rod (5), rotating shaft (4), arc-chute (9), spring operating mechanism (10), its fixed contact (14), moving contact (8), arc-chute (9) is installed in the switch gear room that is made up of loam cake (2) and lower cover (3), fill sulfur hexafluoride gas in the switch gear room, moving contact (8) connects conducting rod (6) down, and fuse (11) is fixedlyed connected with following conducting rod (6); It is characterized in that on the fixed contact (14) outside loam cake (2) bellows insulator (1) being set, this bellows insulator (1) upper end to the distance of the surface creepage between the metal installing rack (12) is 480mm; Lower cover (3) outer surface in following conducting rod (6) outside that connects moving contact (8) is provided with multi-layer annular insulated gate (13), and making down conducting rod (6) lower end to the distance of the surface creepage between the metal installing rack (12) is 480mm; Spaced apart between the adjacent two-phase is 275mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201903791U CN201490077U (en) | 2009-08-03 | 2009-08-03 | Indoor sulfur hexafluoride load switch-fuse combined electric appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201903791U CN201490077U (en) | 2009-08-03 | 2009-08-03 | Indoor sulfur hexafluoride load switch-fuse combined electric appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201490077U true CN201490077U (en) | 2010-05-26 |
Family
ID=42428946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201903791U Expired - Fee Related CN201490077U (en) | 2009-08-03 | 2009-08-03 | Indoor sulfur hexafluoride load switch-fuse combined electric appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201490077U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113341339A (en) * | 2021-05-19 | 2021-09-03 | 国网河北省电力有限公司检修分公司 | Voltage-dividing insulating cap for controllable lightning arrester direct current leakage current test |
-
2009
- 2009-08-03 CN CN2009201903791U patent/CN201490077U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113341339A (en) * | 2021-05-19 | 2021-09-03 | 国网河北省电力有限公司检修分公司 | Voltage-dividing insulating cap for controllable lightning arrester direct current leakage current test |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100526 Termination date: 20160803 |