High or medium tension circuit breaker
US4996399A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 3, 1990 |
| Grant date | Feb 26, 1991 |
| Priority date | — |
| Expiry date | Jul 3, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H33/903
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A circuit breaker for high and medium tension including insulation by means of a dielectric gas and puffer arc blasting, the circuit breaker comprising a gastight insulating casing, containing: PA0 a fixed assembly comprising, in particular, a fixed main contact and a fixed arcing contact; PA0 a moving assembly driven by a drive rod and including, in particular, a moving main contact and a moving arcing contact; PA0 a first blast volume extended by a blast nozzle; PA0 a blast piston; and PA0 first and second secondary contacts disposed inside a second volume and designed to strike a secondary arc; PA0 wherein the first secondary contact is fixed relative to the fixed assembly, the second secondary contact being semi-moving relative to the moving assembly, possessing its own source of energy for displacing it during a circuit breaker disengagement operation, and being provided with means for conferring a shorter stroke thereto than the stroke of the moving assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.