Electrical circuit breaker with self-extinguishing expansion and insulating gas
US5057655A · kind A · utility
88Cited by
2References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 15, 1990 |
| Grant date | Oct 15, 1991 |
| Priority date | — |
| Expiry date | Mar 15, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H33/982
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An inside of tubular contacts of a self-extinguishing expansion SF.sub.6 -gas circuit breaker including guiding ribs arranged to oppose any vortex-effect swirling gas flow between a first extinguishing chamber and a second expansion chamber. The presence of these ribs improves the dielectric withstand of the circuit breaker, and prevents any arc restriking inside the contacts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.