Surge voltage protector for use in power transmission networks
US7120001B2 · kind B2 · utility
1Cited by
8References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 16, 2002 |
| Grant date | Oct 10, 2006 |
| Priority date | — |
| Expiry date | Dec 3, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01C7/126
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to a surge voltage protector (1) which comprises a discharge current path with at least one varistor block (4a, 4b, 4c). In order to prevent the varistor blocks (4a, 4b, 4c) from bursting when an inner error is produced and an electric arc connected thereto is created, a coating (9, 9a, 9b, 9c) is applied in the region of the outer covering area of at least one varistor block (4a, 4b, 4c), said coating being made of a substance which triggers an electric flashover when a critical temperature of the varistor blocks (4a, 4b, 4c) is exceeded.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.