Method of current interruption using puffer type gas circuit breaker with combined-action of cylinder and piston
US7339132B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 6, 2005 |
| Grant date | Mar 4, 2008 |
| Priority date | — |
| Expiry date | Dec 6, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H33/904
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A puffer type gas circuit breaker has a piston, which is connected with a center shaft via a link mechanism. At an initial stage of an interruption operation, the link mechanism drives a puffer cylinder and the piston both in an interruption direction while maintaining an almost constant distance therebetween. Even when a pressure rise occurs in a compression chamber by the heat of an arc generated in accordance with opening between a fixed arc contact and a movable arc contact, the pressure rise does not become an operation counterforce to an operator. At a final stage of the interruption operation where the fixed arc contact is removed from a throat of an insulating nozzle, the link mechanism drives the piston in an almost stopped status.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.