DC Circuit breaker
US4458121A · kind A · utility
7Cited by
3References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 30, 1982 |
| Grant date | Jul 3, 1984 |
| Priority date | — |
| Expiry date | Sep 30, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H33/703
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A DC circuit breaker of the type using a blown arc-extinguishing gas is disclosed which allows for reliable fast interruption of DC currents through the provision of arc extension current paths. The extension current paths are relatively long and are bent after the incidence of the arc-extinguishing gas on the arc. The arc is formed to extend for a long distance in a loop configuration. An auxiliary electrode short-circuits the extended arc with one auxiliary electrode being provided for each extension current path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.