Three-phase package-type gas-insulated switch gear having isolators being aligned in a first plane and earthing switches disposed laterally side by side on a second plane
US5134542A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 5, 1990 |
| Grant date | Jul 28, 1992 |
| Priority date | — |
| Expiry date | Jul 5, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02B13/0352
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A gas-insulated switchgear comprises a sealed enclosure filled with an electrically insulating gas, isolators of three phases for making/breaking a main circuit, and earthing switches of the three phases for grounding the main circuit. The isolators and the earthing switches are disposed in the sealed enclosure, with the isolator of each phase including oppositely disposed stationary and movable side contacts, and a movable contact for turning on or off electrical connection between them. The earthing switch of each phase includes an earth stationary contact connected to one of the movable side conductors and an earth movable contact for connection with or disconnection from the earth stationary contact. The components of the isolators of the three phases and the components of the earthing switches of the three phases are respectively situated on two virtual planes, which are adjacent to each other and disposed substantially along a longitudinal direction of the sealed enclosure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.