Disconnect switch for metal-clad, pressurized-gas insulated, high-voltage switchgear installation
US4539448A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 30, 1984 |
| Grant date | Sep 3, 1985 |
| Priority date | — |
| Expiry date | Aug 30, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H31/32
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A disconnect switch is provided for a metal-clad, pressurized-gas insulated, high-voltage switchgear installation. The disconnect switch includes: PA0 first and second contact assemblies which have a common longitudinal axis and are switchable between an open position and a closed position. An isolating tube is positioned inside one of the first contact assemblies and is movable therein along the axis during a switching operation between an open position at which the contact element is completely within the said one contact assembly and a closed position at which the said contact element engages the other contact assembly. First and second resistors are positioned within the isolating tube and are movable along the axis inside the isolating tube during switching toward and from the other of the contact assemblies. The disconnect switch for a metal-clad, pressurized-gas insulated, high-voltage switchgear installation discourages generating of high frequency oscillations and arcing to the metal of the encapsulation during switching. The disconnect switch uses two resistors of equal size which move inside an isolating tube to make electrical contact prior to the main contacts and to b…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.