Three-position ground switch
US7429710B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 6, 2004 |
| Grant date | Sep 30, 2008 |
| Priority date | — |
| Expiry date | Apr 13, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H31/003
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A high or medium voltage electrical switch, particularly a GIS type isolating switch with three switching positions and a grounding position, includes a switching element in a closed and sealed enclosure that can be filled with a dielectrically insulating gas, containing a mobile switching element free to move along an axial direction to electrically connect two conducting bars at intervals from each other, and also including a fixed ground contact to be electrically connected to one of the two conducting bars through the switching element when the switch is in the grounding position. The fixed ground contact is offset from the path of the switching element along the axial direction and the switching element forms a Y with a contact pin such that the contact pin and the fixed ground contact engage in each other through displacement of the switching element along the axial direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.