Electrical circuit breaker with self-expansion and rotating arc
US4737607A · kind A · utility
8Cited by
5References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 18, 1987 |
| Grant date | Apr 12, 1988 |
| Priority date | — |
| Expiry date | Mar 18, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H33/982
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electrical circuit breaker with self-expansion and rotating arc insulated with SF6 comprises a fixed arcing contact secured to the front face of a magnetic blow-out coil. An electrode is electrically insulated from the fixed arcing contact and covers the front face being connected to the opposite end of the coil by a branch circuit. The electrode is arranged to pick up a fraction of the arcing current, so that the magnetic field generated in the breaking zone by the coil remains appreciably constant when the value of the short-circuit current exceeds a predetermined threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.