Hitachi, Ltd.

Michio Moriya

Koji Sasaki

Seizo Nakano

Kouji Sasaki

Tuneo Kishi

A tank type gas circuit breaker comprises a sealed vessel which is filled with an insulating gas, insulating support means whose one end is fixed to the sealed vessel, a bracket which is fixed to the other end of the insulating support means, a linkage which is disposed in the bracket, and at least two interrupting units which are operated for opening and closure by means of the linkage and which are connected in electrical series with each other. At least two interrupting units which effect switching operations along axes being substantially parallel are disposed on at least one end face side of the bracket in a manner to be staggered in a direction of the axes, and one of the adjacent interrupting units located on the bracket side has its stationary contact member electrically connected with a movable contact member of the other interrupting unit at all times.

Tank type gas circuit breaker

A grounded tank type gas circuit breaker comprises a grounded tank filled with a dielectric gas and having an opening airtightly sealed by a detachable cap, a capacitor unit electrically and mechanically connected at one end to the inner wall surface of the cap, and interrupting means mounted in the tank and electrically connected to the other end of the capacitor unit.

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Hitachi, Japan

Michio Moriya