High tension circuit breaker having a dielectric blast gas
US4983791A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 1990 |
| Grant date | Jan 8, 1991 |
| Priority date | — |
| Expiry date | May 31, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H33/903
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A high tension circuit breaker insulated by an arc blasting dielectric gas and comprising, inside a gastight insulating housing: a fixed assembly comprising, in particular, a fixed main contact and a fixed arcing contact; a moving assembly driven by a drive rod and including, in particular, a moving main contact and a moving arcing contact; a blast volume extended by a blast nozzle; a blast piston; and a pair of secondary contacts disposed inside a first volume and intended to generate a secondary arc; wherein the circuit breaker further comprises first means for reducing the risks of unwanted arcs being struck due to the secondary arc, the first means being constituted by a jacket of insulating material extending level with the secondary contacts and in sliding contact with at least a portion of one of the sliding contacts, the jacket having longitudinal grooves adjacent to said secondary contact. The invention is applicable to high tension circuit breakers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.