Gas-insulated switchgear tank
AssigneesHitachi, Ltd., Japan Ae Power Systems Corporation
InventorsToshiaki Rokunohe, Yoshitaka Yagihashi, Fumihiro Endo, Tomoaki Utsumi, Shunji Ito, Takashi Omori
Life of this patent
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Abstract
In a gas-insulated switchgear tank in which an electric insulating characteristic is improved by a gas, and which has a vacuum circuit-breaker, a disconnecting switch, and a container in which container the vacuum circuit-breaker and the disconnecting switch are arranged and an inside of which container is adapted to be hermetically sealed and filled with the gas in such a manner that the vacuum circuit-breaker and the disconnecting switch are at least partially surrounded by the gas, the gas includes N2 and O2.
Claims20
A gas-insulated switchgear tank to be electrically connected to at least one of a number of bus bars, comprising:
- a vacuum circuit-breaker including a movable contact, a plurality of disconnecting switches each of which includes a movable contact, and a container in which the vacuum circuit-breaker and the disconnecting switch are arranged and a mixture of nitrogen and a gas of earth-warming coefficient not more than 1 is contained, and a gaseous pressure of the mixture is kept at 0.2-0.8 MPa•abs,
- wherein the movable contact of the vacuum circuit-breaker is movable along a linear axis, and the disconnecting switches are juxtaposed with each other in a direction parallel to the linear axis.
A gas-insulated switchgear tank to be electrically connected to at least one of a number of bus bars, comprising:
- a vacuum circuit-breaker including a movable contact, at least one disconnecting switch including a movable contact, and a container in which the vacuum circuit-breaker and the disconnecting switch are arranged and a mixture of nitrogen and a gas of earth warming coefficient not more than 1 is contained, and a gaseous pressure of the mixture is kept at 0.2-0.8 MPa•abs,
- wherein the movable contact of the vacuum circuit-breaker and the movable contact of the disconnecting switch are movable along respective linear axes.
Dependencies are inferred from the claim text.