Gas-insulated switchgear

Details Gas-insulated switchgear Gas-insulated switchgear

2011-08-02

2011-08-02

Thompson, Gregory D (Department: 2835)

Electricity: electrical systems and devices

Housing or mounting assemblies with diverse electrical...

For electrical power distribution systems and devices

C174S0140BH, C218S068000, C218S155000, C361S612000

Reexamination Certificate

active

07990687

ABSTRACT:
A gas-insulated switchgear includes an electric conductor that is housed in a vessel that is sealed and filled with insulating gas, a current transformer that is housed in the vessel, which includes a coil wound around the electric conductor, an electric-field relaxing shield that is arranged in the vessel at a radially inward position relative to an inner side of the coil, and a dielectric insulating member that is arranged on an end portion of the electric-field relaxing shield.

REFERENCES:
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patent: 4554399 (1985-11-01), Cookson
patent: 4730085 (1988-03-01), Hama et al.
patent: 5126917 (1992-06-01), Matsuda
patent: 5654532 (1997-08-01), Meyer et al.
patent: 5798484 (1998-08-01), Yamagiwa et al.
patent: 6307172 (2001-10-01), Bolin et al.
patent: 7262362 (2007-08-01), Holaus et al.
patent: 7858877 (2010-12-01), Nowakowski et al.
patent: 62-57511 (1987-04-01), None
patent: 3-47323 (1991-10-01), None

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