CN201655656U - Indoor high-voltage vacuum circuit breaker used in high altitude - Google Patents
Indoor high-voltage vacuum circuit breaker used in high altitude Download PDFInfo
- Publication number
- CN201655656U CN201655656U CN2010201413526U CN201020141352U CN201655656U CN 201655656 U CN201655656 U CN 201655656U CN 2010201413526 U CN2010201413526 U CN 2010201413526U CN 201020141352 U CN201020141352 U CN 201020141352U CN 201655656 U CN201655656 U CN 201655656U
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- circuit breaker
- insulating sleeve
- heat
- contact arm
- vacuum circuit
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- Expired - Fee Related
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- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
The utility model discloses an indoor high-voltage vacuum circuit breaker used in high altitude. The vacuum circuit breaker adopts the structure that two ends of a vacuum arc extinguishing chamber are sleeved with silicone rubber sleeves; a heat shrinkable tube is sleeved on a contact arm, and an insulating sleeve is sleeved outside the heat shrinkable tube; an air layer is formed between the heat shrinkable tube and the insulating sleeve; the phase spacing of the circuit breaker is 425 mm; the electrode spacing is 472 mm; and the spring mechanism of the circuit breaker adopts a 3AF spring actuating mechanism. The circuit breaker can be used in the altitude up to 2,500 m, and has the characteristics of low manufacturing cost, good insulation and reliable operation.
Description
Technical field
The utility model relates to a kind of indoor high-voltage vacuum circuit breaker.
Background technology
It is former ZN85-40.5 that current KYN61-40.5 switch cubicle (dividing the 1400mm cabinet wide and two kinds of wide sizes of cabinet of 1200mm) vacuum circuit-breaker adopts model, and there is following shortcoming in the circuit breaker insulating Design:
1, national standard requires the clean insulation distance 〉=300mm of air; The quiet distance of former ZN85-40.5 circuit breaker spaced apart air is that 220mm～250mm can not satisfy this requirement.For guaranteeing that requirement of withstand voltage has adopted the sulfuration coating processes to the circuit breaker contact arm, though Insulation Test can be satisfied, there is difference the back because of the coefficient of expansion but epoxy resin coat and copper contact arm are heated, temperature influence temperature easily ftractures, product is in service to be not easy to find this kind defective again, cause alternate, shorted to earth accident easily, coat thickness about about 2mm, only can satisfy the 95kV/min industrial frequency withstand voltage under the conventional height above sea level greatly.
2, former ZN85-40.5 circuit breaker adopts standard TD22-40.5 vacuum interrupter, these arc control device are applied in 1000 meters height of height above sea level, only can satisfy the minimum of national Specification when delivery test: industrial frequency withstand voltage 95kV/min, lightning impulse voltage 185kV, this technical parameter can not satisfy the insulating requirements of highlands.And because current KYN61-40.5 type high-tension switch cabinet and ZN85-40.5 circuit breaker is universal, increasing product trends towards developing to the high altitude localities, existing product can only be hung back in the face of market because of the insulation limitation, thereby has limited the developing in market and the popularization of product;
3, the former ZN85-40.5 circuit breaker operation mechanism 3AV3 spring mechanism that must use, mechanism is in lower end, circuit breaker galvanic circle, mechanism's amount of parts is kind more than 150 nearly, the modularized design deficiency, parts are influenced significantly by machining, performance is unreliable, in product frequent generation operating mechanism deciliter fault in service.
Because there is above-mentioned weak point in former ZN85-40.5 circuit breaker self design, limited product on the plateau, the application in high gradation for surface pollution requirement place, market demands are carried out Renewal Design to product.
Summary of the invention
For solving the problems referred to above that former ZN85-40.5 circuit breaker exists, the utility model provides a kind of high height above sea level indoor high-voltage vacuum circuit breaker, and its technical scheme of taking is:
This circuit breaker comprises vacuum interrupter on spring mechanism, the fixedly connected spring mechanism and is fixed on contact arm on the vacuum interrupter, the two ends of vacuum interrupter are socketed with silicone rubber sleeve, be socketed with heat-shrink tube on the contact arm, the outside of heat-shrink tube is with insulating sleeve, has air layer between heat-shrink tube and the insulating sleeve, this circuit breaker spaced apart is 425mm, and die opening is 472mm, and spring mechanism adopts the 3AF spring operating mechanism.
This circuit breaker has increased the size of spaced apart and die opening, and air insulation complies with the national standard requirements; Take heat-shrinkable T bush, pure air, insulating sleeve compound mode contact arm reinforced insulation structure, solved the difficult problem of sulfuration coat cracking; The vacuum interrupter two ends install silicone rubber sleeve additional, improve Electric Field Distribution and increase the external insulation withstand voltage level, make industrial frequency withstand voltage reach 112kV/min, and lightning impulse voltage reaches 215kV; The operating mechanism of this circuit breaker adopts 3AF mechanism, and the relative 3AV3 spring mechanism of parts has reduced about 1/3, and mechanism reliability can obviously strengthen, and has effectively controlled processing technology in the parts production process.
The employed height above sea level of this circuit breaker can reach 2500 meters, can be applied in western high altitude localitiess such as Yunnan, Guizhou, has that processing cost is low, good insulating and an operation reliable characteristics.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the cutaway view of the utility model contact arm and vacuum interrupter part.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further:
As depicted in figs. 1 and 2, this circuit breaker spaced apart is 425mm, and die opening is 472mm, and spring mechanism 1 adopts the 3AF spring operating mechanism, is located at circuit breaker galvanic circle front end horizontal positioned.
As shown in Figure 3, vacuum interrupter 2 adopts standard TD22-40.5 vacuum interrupter, and its two ends socket silicone rubber sleeve 4 is as the modified model vacuum interrupter; Heat-shrink tube 5 is enclosed within on the contact arm 3 and is close to the outer wall of contact arm 3, and the outside of heat-shrink tube 5 adds cover insulating sleeve 6, forms air layer between heat-shrink tube 5 and the insulating sleeve 6, and insulating sleeve 6 prevents slippage by the block card 7 that is fixed on the heat-shrink tube 5.
Claims (1)
1. one kind high height above sea level indoor high-voltage vacuum circuit breaker, comprise spring mechanism (1), the vacuum interrupter (2) of fixedly connected spring mechanism (1) and be fixed on contact arm (3) on the vacuum interrupter (2), it is characterized in that: the two ends of vacuum interrupter (2) are socketed with silicone rubber sleeve (4), be socketed with heat-shrink tube (5) on the contact arm (3), the outside of heat-shrink tube (5) is with insulating sleeve (6), has air layer between heat-shrink tube (5) and the insulating sleeve (6), this circuit breaker spaced apart is 425mm, die opening is 472mm, and spring mechanism (1) adopts the 3AF spring operating mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201413526U CN201655656U (en) | 2010-03-26 | 2010-03-26 | Indoor high-voltage vacuum circuit breaker used in high altitude |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201413526U CN201655656U (en) | 2010-03-26 | 2010-03-26 | Indoor high-voltage vacuum circuit breaker used in high altitude |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201655656U true CN201655656U (en) | 2010-11-24 |
Family
ID=43120900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201413526U Expired - Fee Related CN201655656U (en) | 2010-03-26 | 2010-03-26 | Indoor high-voltage vacuum circuit breaker used in high altitude |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201655656U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103337433A (en) * | 2013-07-17 | 2013-10-02 | 宁波天安（集团）股份有限公司 | Vacuum load isolation switch-fuse combined electric appliance for wind power and switch cabinet thereof |
-
2010
- 2010-03-26 CN CN2010201413526U patent/CN201655656U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103337433A (en) * | 2013-07-17 | 2013-10-02 | 宁波天安（集团）股份有限公司 | Vacuum load isolation switch-fuse combined electric appliance for wind power and switch cabinet thereof |
| CN103337433B (en) * | 2013-07-17 | 2016-05-04 | 宁波天安（集团）股份有限公司 | Vacuum load isolating switch-fuse combined electric apparatus and switch cubicle thereof for wind-powered electricity generation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101124 Termination date: 20120326 |