Contact for a medium-voltage vacuum circuit-breaker with improved arc extinction, and an associated circuit-breaker or vacuum circuit-breaker, such as an AC generator disconnector circuit-breaker
US8164019B2 · kind B2 · utility
4Cited by
14References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 2, 2010 |
| Grant date | Apr 24, 2012 |
| Priority date | — |
| Expiry date | Aug 13, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H33/6644
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A vacuum circuit-breaker wherein one contact body is made with two windings implanted concentric with one another and connected electrically in parallel. The second winding is in the form of an solid part with an annular ring. The circuit-breaker increases the axial magnetic field (AMF) and distributes it uniformly over the contact surface so that arc extinction is improved for high short-circuit currents, typically greater than 63 kA.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.