Arc extinction device for gas insulation electrical switchgear
US4697055A · kind A · utility
9Cited by
8References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 4, 1986 |
| Grant date | Sep 29, 1987 |
| Priority date | — |
| Expiry date | Feb 4, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H33/982
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to an arc extinction device for SF6 insulated electrical switchgear. A divisional arc chute 58 comprises a wall 58 with a convex revolution lateral surface, notably spherical, opposite the separation area 20, 22 of the contacts 20, 22, so as to form an acoustic resonator reflecting the pressure waves inwardly, causing the gases to converge towards the center of the sphere. At least one of the contacts is hollow and constitutes an outflow duct, for the gases from the arc chute 18 to a discharge chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.