SF.sub.6 circuit-breaker incorporating both a varistor and a capacitor
US5235147A · kind A · utility
11Cited by
8References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 2, 1992 |
| Grant date | Aug 10, 1993 |
| Priority date | — |
| Expiry date | Apr 2, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H33/16
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A high tension circuit-breaker has an insulating case filled with a dielectric gas such as SF.sub.6. A high capacitance capacitor and at least a varistor are electrically interconnected in parallel and are connected to a first terminal. The capacitor and varistor are associated with an insertion mechanism which momentarily inserts the capacitor and varistor in parallel with the arcing contacts during circuit-breaker disengagement or engagement. The insulating case is extended by at least one conductive case housing both the capacitor and at least part of the varistor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.