Earthing switch for gas-insulated switchgear apparatus
US4577075A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 16, 1985 |
| Grant date | Mar 18, 1986 |
| Priority date | — |
| Expiry date | Jan 16, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02B13/075
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An earthing switch for gas-insulated switchgear apparatus is disclosed, in which conductor within an enclosure is provided with a stationary contact, and a moving contact is movably provided to connect with and disconnect from the stationary contact by an operating mechanism within an operating mechanism case which is mounted on a branch tube of the enclosure interposing an insulating plate therebetween. For connecting the moving contact to the enclosure electrically, a plurality of earthing bars are employed, and further, directions of electromagnetic forces generated between the moving contact and individual earthing bars are considered in the connection of the earthing bars. By virtue of the connection of the plurality of earthing bars, the influence of the electromagnetic forces acting on the moving contact can be reduced to a great extent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.