CN201549426U - Outdoor high-voltage AC porcelain pole circuit breaker SF6 - Google Patents
Outdoor high-voltage AC porcelain pole circuit breaker SF6 Download PDFInfo
- Publication number
- CN201549426U CN201549426U CN200920244919XU CN200920244919U CN201549426U CN 201549426 U CN201549426 U CN 201549426U CN 200920244919X U CN200920244919X U CN 200920244919XU CN 200920244919 U CN200920244919 U CN 200920244919U CN 201549426 U CN201549426 U CN 201549426U
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- China
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- main contact
- moving main
- porcelain
- circuit breaker
- outdoor high
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model relates to the field of design and manufacture of high voltage power switches and discloses an outdoor high-voltage AC porcelain pole circuit breaker SF6, which comprises a support, wherein three porcelain poles are arranged linearly on the support, an arc-extinguishing chamber is arranged inside each porcelain pole, each arc-extinguishing chamber comprises a porcelain housing, a static terminal arranged at the upper part of the cavity of the porcelain housing and a movable terminal arranged at the lower part of the cavity of the porcelain housing; and a movable main contact holder is arranged at the top of the movable terminal. The outdoor high-voltage AC porcelain pole circuit breaker SF6 is characterized in that a movable main contact with inverted U-shaped cross section is arranged on the upper end surface of the movable main contact holder, the inverted U-shaped outer side surface of the movable main contact is the electrical contact surface, and the U-shaped opened end of the movable main contact is fixedly connected with the movable main contact holder.
Description
Technical field
The utility model relates to the design and the manufacturing field of high voltage electric switch, particularly a kind of outdoor high-voltage alternating current porcelain knob SF6 circuit breaker.
Background technology
Outdoor high-voltage alternating current porcelain knob SF6 circuit breaker belongs to the electric coordinated type operating breaker of three-phase, is made up of three one poles, can realize electric remote-control or manual on the spot.But, along with the capacity of urban and rural power grids constantly increase, the rated short circuit drop-out current and the specified short time withstand current ability of this type of outdoor high-voltage alternating current porcelain knob SF6 circuit breaker have certain limitation, and especially in cut-offfing the rated short circuit current process, fracture punctures easily.
Summary of the invention
The purpose of this utility model is to provide a kind of outdoor high-voltage alternating current porcelain knob SF6 circuit breaker, by simple improvement, promptly can improve the ability that it cut-offs short circuit current, prevents that fracture from puncturing.
In order to achieve the above object, the utility model is achieved by the following technical solutions.
A kind of outdoor high-voltage alternating current porcelain knob SF6 circuit breaker comprises support, and in-line is provided with three porcelain knobs on the support, is provided with arc control device in each porcelain knob; Each arc control device comprises insulator, be arranged on insulator chamber top quiet end and be arranged on the moved end of chamber bottom, the top, moved end is provided with moving main contact seat and it is characterized in that, it is inverted U-shaped moving main contact that the upper surface of described moving main contact seat is provided with the cross section, inverted U-shaped lateral surface is an electric interface, and its U-shaped openend is fixedlyed connected with moving main contact seat.
Further improvement of the utility model is that the upper surface of described moving main contact seat is embedded with the screw of protrusion, and the inverted U-shaped openend of moving main contact offers and described screw connecting thread hole.
In traditional outdoor high-voltage alternating current porcelain knob SF6 circuit breaker, moving main contact is a ligule, is fixed on the lateral surface on moving main contact seat top, and its lip of the tongue is to moving main contact seat inside bend; And moving main contact of the present utility model cross section is inverted U-shaped, inverted U-shaped openend is fixedlyed connected with the upper surface of moving main contact seat, its lateral surface is an electric interface, there is wedge angle in the moving main contact that has overcome traditional outdoor high-voltage alternating current porcelain knob SF6 circuit breaker, discharge easily, even puncture the defective of moving main contact.Simultaneously, the upper surface of moving main contact seat of the present utility model is embedded with the screw of protrusion, the inverted U-shaped openend of moving main contact offers and described screw connecting thread hole, eliminated moving main contact and produced gas gap and projection because of fixedlying connected, and then influenced the defective of Electric Field Distribution with moving main contact seat.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further details.
Fig. 1 is for adopting a kind of outdoor high-voltage alternating current porcelain knob SF6 circuit breaker of the present utility model (arc control device schematic diagram of LW mouth-252/Y4000-63);
Fig. 2 is the enlarged diagram at A position among Fig. 1;
Fig. 3 is the structural representation at the A position of traditional outdoor high-voltage alternating current porcelain knob SF6 circuit breaker;
Wherein: 1 is quiet framework; 2 is insulator; 3 is the stationary contact headstock; 4 is the quiet arc contact; 5 is moving arcing contact; 6 is piston; 7 is spout; 8 are moving main contact; 9 are moving main contact seat; 10 is air cylinder.
Embodiment
With reference to Fig. 1, model is LW-252/Y4000-63 outdoor high-voltage alternating current porcelain knob SF6 circuit breaker, its agent structure is the same with conventional outdoor high-voltage alternating current porcelain knob SF6 circuit breaker, in support, be provided with the transmission mechanism of three synchronised, in-line is provided with three porcelain knobs on the support, and each porcelain knob is provided with arc control device (omitting among the figure).Each arc control device comprises insulator 2, be arranged on insulator 2 chamber top quiet end and be arranged on the moved end of the chamber bottom of insulator 2, quiet end mainly comprises quiet framework 1, stationary contact headstock 3 and quiet arc contact 4.The moved end mainly comprises spout 7, moving main contact 8, moving main contact seat 9, air cylinder 10, moving arcing contact 5 and piston 6.Electric current is by moved end and quiet end under "on" position.In the separating brake process, air cylinder 10 and piston 6 relative motions, the SF in the compression air cylinder 10
6Gas extinguishes the high-voltage arc between quiet arc contact 4 and the moving arcing contact 5 from spout 7 ejection at a high speed, thereby cuts off electric current, other visual plants of protection electric power system.In this process, the temperature around the moving main contact 8 is very high, and electric field is also very strong, if the non-uniform electric around its might puncture so and influences and cut-off, the structure of therefore moving main contact 8 is very crucial.
With reference to Fig. 2, it is inverted U-shaped moving main contact 8 that the upper surface of moving main contact seat 9 is provided with the cross section, and inverted U-shaped lateral surface is an electric interface, and its U-shaped openend is fixedlyed connected with moving main contact seat 9; Be specially: the upper surface of moving main contact seat 9 is embedded with the screw of protrusion, and the inverted U-shaped openend of moving main contact 9 offers and described screw connecting thread hole.With reference to Fig. 3, structure for the A position of traditional outdoor high-voltage alternating current porcelain knob SF6 circuit breaker, its moving main contact 8 is a ligule, be fixed on the lateral surface on moving main contact seat 9 tops, its the lip of the tongue is to moving main contact seat 9 inside bend, exist between moving main contact 8 and the moving main contact seat 9 and have gas gap and projection, influence Electric Field Distribution.
The parameter of the LW of present embodiment-252/Y4000-63 outdoor high-voltage alternating current porcelain knob SF6 circuit breaker all meets the test requirements document of IEC62271-100 " ac hv breaker " and GB/T1984 " high-voltage AC breaker ", and concrete parameter sees the following form.
| Sequence number | Project | LW□-252/Y4000-63 |
| 1 | Rated voltage kV | 252 |
| 2 | Rated current A | 4000 |
| 3 | Rated short circuit drop-out current kA | 63 |
| 4 | Rated short circuit making current kA | 160 |
| 5 | Specified short time withstand current kA (3S) | 63 |
| 6 | Rated peak withstand current kA (0.3S) | 160 |
Claims (2)
1. an outdoor high-voltage alternating current porcelain knob SF6 circuit breaker comprises support, and in-line is provided with three porcelain knobs on the support, is provided with arc control device in each porcelain knob; Each arc control device comprises insulator, be arranged on insulator chamber top quiet end and be arranged on the moved end of chamber bottom, the top, moved end is provided with moving main contact seat and it is characterized in that, it is inverted U-shaped moving main contact that the upper surface of described moving main contact seat is provided with the cross section, inverted U-shaped lateral surface is an electric interface, and its U-shaped openend is fixedlyed connected with moving main contact seat.
2. a kind of outdoor high-voltage alternating current porcelain knob SF6 circuit breaker according to claim 1 is characterized in that the upper surface of described moving main contact seat is embedded with the screw of protrusion, and the inverted U-shaped openend of moving main contact offers and described screw connecting thread hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920244919XU CN201549426U (en) | 2009-10-27 | 2009-10-27 | Outdoor high-voltage AC porcelain pole circuit breaker SF6 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920244919XU CN201549426U (en) | 2009-10-27 | 2009-10-27 | Outdoor high-voltage AC porcelain pole circuit breaker SF6 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201549426U true CN201549426U (en) | 2010-08-11 |
Family
ID=42604605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920244919XU Expired - Lifetime CN201549426U (en) | 2009-10-27 | 2009-10-27 | Outdoor high-voltage AC porcelain pole circuit breaker SF6 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201549426U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109872919A (en) * | 2019-04-10 | 2019-06-11 | 西安西电开关电气有限公司 | A kind of breaker and its arc-chutes |
-
2009
- 2009-10-27 CN CN200920244919XU patent/CN201549426U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109872919A (en) * | 2019-04-10 | 2019-06-11 | 西安西电开关电气有限公司 | A kind of breaker and its arc-chutes |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100811 |