Safety device for electrical apparatus containing a dielectric gas, in particular circuit breakers or voltage-droppers for measurement purposes
US5089931A · kind A · utility
8Cited by
9References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 7, 1990 |
| Grant date | Feb 18, 1992 |
| Priority date | — |
| Expiry date | Feb 7, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H33/26
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A safety device for an electrical apparatus comprising an enclosure filled with gas under pressure, the safety device comprising first means for detecting the appearance of an arc inside the enclosure, and second means controlled by the first means to establish a path for the gas through the enclosure when the first means has detected an arc for a given length of time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.