IEEJ Transactions on Power and Energy
Online ISSN : 1348-8147
Print ISSN : 0385-4213
ISSN-L : 0385-4213
66/77kV C-GIS Using Composite Insulation in SF6 Gas
Nobuo MasakiTetsuo YoshidaMasaru MiyagawaIwao OhshimaKikuo Matsuzawa
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1990 Volume 110 Issue 12 Pages 1006-1012


High-voltage SF6 gas-insulated switchgear was at first introduced as a power supply facility.
As its reliability and safety come to be recognized in service, the gas-insulated switchgear has evolved into a power receiving facility. This switchgear consists of a cubicle enclosure sealed with a low pressure SF6 insulating gas and a long-life vacuum circuit breaker installed therein with devices and circuits integrated at higher density, the switchgear has achieved a substantial volume reduction of some 50% from the conventional one.
This paper introduced fundamental technologies such as low-pressure SF6 gas insulation, gas-solid composite insulation and gas monitoring, and also gas-insulated vacuum switchgear for 66/77kV power receiving facilities.

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