Grounded gas blast circuit breaker/isolating switch with visual inspection assembly
US5072083A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 7, 1990 |
| Grant date | Dec 10, 1991 |
| Priority date | — |
| Expiry date | Aug 7, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2009/0292
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A circuit breaker/isolating switch device intended, in particular, to be associated with a generator in a power station for protection purposes. The device is disposed inside a metal sheath and comprises a gastight insulating casing filled with a gas having good dielectric properties and at a pressure of a few bars, the casing containing a fixed assembly comprising a fixed permanent contact and a fixed arcing contact, a moving assembly comprising a moving permanent contact and a moving arcing contact, a blast cylinder, a blast piston, and a blast nozzle. The moving assembly is connected to a drive rod passing in gastight manner through the casing and connected outside the casing to a drive mechanism. The casing carries a metal collar disposed level with the contact separation zone and connected to ground and the collar includes a radial channel provided with an optical device enabling the position of the contacts to be inspected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.