1990 年 110 巻 12 号 p. 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.