Thermal switch short circuiting device for arrester systems
US4275432A · kind A · utility
18Cited by
15References
63Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 16, 1978 |
| Grant date | Jun 23, 1981 |
| Priority date | — |
| Expiry date | Feb 16, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01T1/14
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Gas filled surge arrester is equipped with a thermally responsive short circuit switch for overload protection and air gap shorting for back up overload protection. The switch and air gap device is disclosed in three orientations; namely, separate and external to the gas tube; unitized with the air gap interior to the switch; and unitized with the air gap exterior to the switch. The unitized arrangements have application in circuitry with gas tubes where back up air gap protection of the thermal switch is desired.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.