Fail safe surge arrester
US4463405A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 19, 1981 |
| Grant date | Jul 31, 1984 |
| Priority date | — |
| Expiry date | Feb 19, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01T1/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A surge arrester including an outer porcelain housing and an ablative heat shield liner is disclosed herein along with a number of techniques for making the surge arrester break resistant. In accordance with one of these techniques, a blow out or relief valve is provided on at least one end of the arrester housing for venting internal pressure due to electrical arcing therein. In this embodiment, an arrangement is provided for preventing the components therein from escaping during the venting procedure. The liner is constructed of a material which is sufficiently ablative to produce its own gas within the housing in response to electrical arcing therein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.