CN201774168U - 20kV switchgear dedicated contact box mounting plate - Google Patents
20kV switchgear dedicated contact box mounting plate Download PDFInfo
- Publication number
- CN201774168U CN201774168U CN2010202624435U CN201020262443U CN201774168U CN 201774168 U CN201774168 U CN 201774168U CN 2010202624435 U CN2010202624435 U CN 2010202624435U CN 201020262443 U CN201020262443 U CN 201020262443U CN 201774168 U CN201774168 U CN 201774168U
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- CN
- China
- Prior art keywords
- box mounting
- contact box
- mounting plate
- switchgear
- mounting panel
- 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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Abstract
The utility model discloses a 20kV switchgear dedicated contact box mounting plate. A mounting convex surface is formed by projecting outwards from the middle of a contact box mounting plate (3) to a direction far away from a circuit breaker (1). The contact box mounting plate enlarges the linear insulating distance between a contact arm of the circuit breaker (1) and the novel contact box mounting plate (3), thereby ensuring that the armour removing type metal closed switchgear at the 20kV rated voltage class can avoid discharge punch-through in a one-minute 65kV power frequency withstand voltage test; the running is safe and reliable; and the structure is simple.
Description
Technical field
The utility model relates to the indoor high voltage switchgear in a kind of electric power power transmission and transformation system, and is special relevant with handcart-type switch equipment.
Background technology
According to State Grid Corporation of China's spirit of " about promoting the notice of 20kV electric pressure ", the very fast intensification of 20kV electric pressure, Jiangsu Province takes the lead in beginning to promote 20kV electric pressure viewpoint in 13 cities as national pilot.For the 20kV switchgear, the still basic scheme that adopts existing comparative maturity of cabinet and interlocking device, key has been exactly an Insulation Problems.Design for existing contact box mounting panel all is the amplification of having carried out size on the basis of 10kV at home basically, agent structure still is plate, not innovation on structural design, directly cause the straight line insulation distance between contact arm and the contact box mounting panel too short, very easily cause disruptive discharge therebetween, thereby make whole switchgear product technology performance low, test does not pass a test, and can not satisfy the requirement of domestic running environment and standard.
The utility model content
The utility model purpose is the contact box mounting panel of a kind of 20kV switch cubicle of design special use.
The technical solution adopted in the utility model is: the contact box mounting panel of a kind of 20kV switch cubicle special use, it is characterized in that, and be formed with one in the centre of contact box mounting panel to protruding convex surface is installed away from the direction of circuit breaker.
The special-purpose contact box mounting panel of the 20kV switch cubicle that the utility model provides, under the prerequisite that guarantees the cabinet size constancy, effectively strengthened the straight line insulation distance between contact arm and the contact box mounting panel, thereby the discharge breakdown phenomenon can not take place in the 65kV power frequency withstand test at one minute in the armored withdraw type metal enclosed switchgear that has guaranteed the 20kV grade of rated voltage, and is safe and reliable to operation and simple in structure.
Description of drawings
The structural representation that Fig. 1 cooperates with circuit breaker for existing 20kV switch cabinet contact box mounting panel;
Fig. 2 is the structural representation of the special-purpose contact box mounting panel of the utility model 20kV switch cubicle;
Fig. 3 is the structural representation that the utility model 20kV switch cabinet contact box mounting panel cooperates with circuit breaker.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
Among the figure: 1, circuit breaker 2, existing contact box mounting panel 3, new contact box mounting panel
As shown in Figure 2, the special-purpose contact box mounting panel of the utility model 20kV switch cubicle is characterized in that: be formed with one in the centre of contact box mounting panel 3 to protruding away from the direction of circuit breaker 1 convex surface is installed.
The special-purpose contact box mounting panel of this 20kV switch cubicle has strengthened the contact arm of circuit breaker 1 and the straight line insulation distance between the new contact box mounting panel 3, thereby the discharge breakdown phenomenon can not take place in the 65kV power frequency withstand test at one minute in the armored withdraw type metal enclosed switchgear that has guaranteed the 20kV grade of rated voltage, safe and reliable to operation, simple in structure.
Claims (1)
1. the special-purpose contact box mounting panel of a 20kV switch cubicle, it is characterized in that: the centre of contact box mounting panel (3) is formed with one to protruding away from the direction of circuit breaker (1) convex surface is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202624435U CN201774168U (en) | 2010-07-19 | 2010-07-19 | 20kV switchgear dedicated contact box mounting plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202624435U CN201774168U (en) | 2010-07-19 | 2010-07-19 | 20kV switchgear dedicated contact box mounting plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201774168U true CN201774168U (en) | 2011-03-23 |
Family
ID=43754006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202624435U Expired - Fee Related CN201774168U (en) | 2010-07-19 | 2010-07-19 | 20kV switchgear dedicated contact box mounting plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201774168U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108802578A (en) * | 2018-05-04 | 2018-11-13 | 国网内蒙古东部电力有限公司电力科学研究院 | A kind of 550kV potting breakers full voltage optimization pressure test method |
-
2010
- 2010-07-19 CN CN2010202624435U patent/CN201774168U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108802578A (en) * | 2018-05-04 | 2018-11-13 | 国网内蒙古东部电力有限公司电力科学研究院 | A kind of 550kV potting breakers full voltage optimization pressure test method |
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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 |
Granted publication date: 20110323 Termination date: 20150719 |
|
| EXPY | Termination of patent right or utility model |