Gas-insulated switchgear with improved insulation joint
US5670767A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 23, 1995 |
| Grant date | Sep 23, 1997 |
| Priority date | — |
| Expiry date | Aug 23, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02G5/068
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A gas-insulated switchgear in which a washer 5 is electrically connected with a tank 1 by a conductive material 12 having a high resistivity at a position where the tank 1 and a tank 2 are joined through an insulator 13 of the gas-insulated switchgear. In view of the structure of the switchgear, the reliability is improved, the structure is simplified, the number of parts is decreased, and the profitability is improved because a steep surge is not theoretically induced for a steep surge induced when turning on/off each unit at an electrically insulated position of a joint between tanks through an insulator of a gas-insulated switchgear for an SF.sub.6 gas-insulated closed-type station.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.