CN203225201U - Load switch - Google Patents
Load switch Download PDFInfo
- Publication number
- CN203225201U CN203225201U CN 201320144052 CN201320144052U CN203225201U CN 203225201 U CN203225201 U CN 203225201U CN 201320144052 CN201320144052 CN 201320144052 CN 201320144052 U CN201320144052 U CN 201320144052U CN 203225201 U CN203225201 U CN 203225201U
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- CN
- China
- Prior art keywords
- shell
- load switch
- utility
- model
- insulation shell
- 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 load switch, comprising a shell, a static contact fixed inside the shell, and a moving contact arranged inside the shell. The shell is an insulating shell casted from epoxy resin by an APG technology. An anti-explosion film part, which is thin in wall thickness, is arranged on the insulating shell. The load switch adopts the insulating shell casted from the epoxy resin by the APG technology, and the insulating shell is characterized by good insulating performance and dirty environment resistance. The insulating shell of the load switch is provided with the anti-explosion film part which is relatively thin in wall thickness so that when an internal arcing fault is generated, high-pressure gas is released from the anti-explosion film part, thereby causing no damage to an operator or to other parts.
Description
Technical field
The utility model relates to the high voltage electric switch apparatus field, relates in particular to a kind of on-load switch.
Background technology
On-load switch be can close in overload condition ShiShimonoseki of normal galvanic circle conditioned disjunction regulation, carrying and drop-out current, also can be under unusual galvanic circle condition (for example short circuit) in accordance with regulations the switchgear of time loaded current.
The dirty performance of the insulating properties of existing its housing of on-load switch and anti-soil remains further to be improved, and when the arcing fault of the inside of generation, might cause case fragmentation, is damaged to the operator easily or destroys other parts.
The utility model content
In order to address the above problem, the utility model provides a kind of on-load switch, to solve problems of the prior art.
To achieve these goals, the technical solution of the utility model is as follows:
On-load switch comprises housing, is fixed on the interior fixed contact of housing, is arranged on the moving contact in the housing, it is characterized in that, and the insulation shell of described housing for adopting the cast of APG technology to form by epoxy resin, this insulation shell is provided with the explosion-proof membranous part of wall thickness.
In a preferred embodiment of the present utility model, described insulation shell is put together by last insulating cover and following insulating cover, and described explosion-proof membranous part is arranged on down on the insulating cover.
Further, described insulation shell inside is filled with sulfur hexafluoride gas.
The utility model adopts the insulation shell that adopts the cast of APG technology to form by epoxy resin, and this insulation shell has the characteristics of good insulation preformance, the dirty environment of anti-soil.
Insulation shell of the present utility model is provided with the thinner explosion-proof membranous part of wall thickness, and when the arcing fault of the inside of generation, gases at high pressure discharge from explosion-proof membranous part, and are unlikely to be damaged to the operator or destroy other parts.
Characteristics of the present utility model can be consulted the detailed description of the graphic and following better execution mode of this case and be obtained to be well understood to.
Description of drawings
Describe the utility model in detail below in conjunction with the drawings and specific embodiments:
Fig. 1 is structural representation of the present utility model.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
Referring to Fig. 1, on-load switch comprises housing, is fixed on the interior fixed contact of housing, is arranged on the moving contact in the housing.The insulation shell of housing for adopting the cast of APG technology to form by epoxy resin, insulation shell is put together by last insulating cover 100 and following insulating cover 200, and insulation shell inside is filled with the sulfur hexafluoride gas of 0.05mpa.
Following insulating cover 200 is provided with the explosion-proof membranous part 210 of wall thickness.When the arcing fault of the inside of generation, gases at high pressure discharge from explosion-proof membranous part, and are unlikely to be damaged to the operator or destroy other parts.Certainly, explosion-proof membranous part also can be arranged on the insulating cover 100.
More than show and described basic principle of the present utility model, principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and the specification is principle of the present utility model; the utility model also has various changes and modifications under the prerequisite that does not break away from the utility model spirit and scope, and these changes and improvements all fall in the claimed scope of the present utility model.The protection range that the utility model requires is defined by appending claims and equivalent thereof.
Claims (3)
1. on-load switch, comprise housing, be fixed on the interior fixed contact of housing, be arranged on the moving contact in the housing, it is characterized in that, the insulation shell of described housing for adopting the cast of APG technology to form by epoxy resin, this insulation shell is provided with the explosion-proof membranous part of wall thickness.
2. on-load switch according to claim 1 is characterized in that, described insulation shell is put together by last insulating cover and following insulating cover, and described explosion-proof membranous part is arranged on down on the insulating cover.
3. on-load switch according to claim 2 is characterized in that, described insulation shell inside is filled with sulfur hexafluoride gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320144052 CN203225201U (en) | 2013-03-27 | 2013-03-27 | Load switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320144052 CN203225201U (en) | 2013-03-27 | 2013-03-27 | Load switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203225201U true CN203225201U (en) | 2013-10-02 |
Family
ID=49252198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320144052 Expired - Fee Related CN203225201U (en) | 2013-03-27 | 2013-03-27 | Load switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203225201U (en) |
-
2013
- 2013-03-27 CN CN 201320144052 patent/CN203225201U/en not_active Expired - Fee Related
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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: 20131002 Termination date: 20190327 |