Overvoltage surge arrester with quick-acting pressure relief means
US5596308A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 11, 1994 |
| Grant date | Jan 21, 1997 |
| Priority date | — |
| Expiry date | Aug 11, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2083/201
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A surge arrester having a cylindrical housing with a throughbore, a metal terminal at each end of the housing, varistor elements located within the housing bore, and a vent within at least one terminal for venting arc-generated gases from the interior of the housing in the event of an arc being developed within the bore as a result of failure of a varistor element. The vent can be formed as a passage extending through one of the terminals from the bore to the exterior thereof via a substantially straight-line path that extends longitudinally of the bore. An electrode connected to the other terminal is spaced from the one terminal by a gap located externally of the insulating housing. The gap arcs over in response to receipt of arc-generated gases from the bore. The gap is located at the end of the housing of the one terminal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.