Circuit breaker for disconnecting an electrical apparatus from electrical network
US6479780B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 17, 2000 |
| Grant date | Nov 12, 2002 |
| Priority date | — |
| Expiry date | Mar 17, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2085/0291
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to a circuit breaker, which is in a fault situation arranged to disconnect an electrical apparatus, such as a distribution transformer, from an average voltage network or a high voltage network at each terminal. At least one link-spring mechanism is arranged at a shaft of the circuit breaker for holding contacts live in connected position and for pushing them apart to the extreme disconnected position when disconnected, while the shaft is brought over the dead spot of its turning. For an initial release, the shaft is at each phase provided with a lever arm, each lever arm at each phase being arranged to turn by a trip pin of a striker of a high voltage fuse the shaft of the circuit breaker and thus the moving contacts of all phases from said connected position over the dead spot of turning said shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.