Gas-insulated switchgear including a vacuum switch, operating mechanism and plural bellows
US5191180A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 11, 1991 |
| Grant date | Mar 2, 1993 |
| Priority date | — |
| Expiry date | Jul 11, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2033/6667
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A gas-insulated switchgear in which a vacuum switch main contact assembly constituted by a fixed contact element and a movable contact element is enclosed in a vacuum tank. The vacuum switch has a movable terminal fixed at its one end to the movable contact element and is led out from the vacuum tank through a bellows. The vacuum switch is enclosed in a gas tank filled with an insulating gas having gas pressure not less than the atmospheric pressure. The main contact assembly of the vacuum switch is operated so as to perform electrical connection and disconnection functions, through a transmission mechanism, by a driver provided outside of the gas tank. A driving rod transmits an operating force of the driver to the movable terminal of the vacuum switch. The driving rod is led out from the gas tank through another bellows mounted to the gas tank.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.