Patent attributes
A gas insulated switchgear includes a vacuum interrupter having a movable contact and a fixed contact in vacuum. The movable contact is on one side of a movable conductor that passes through a bellows. An insulating rod is coupled to the other side of the movable conductor that passes through the bellows. The insulating rod and the other side of the movable conductor are placed in an insulator. The vacuum interrupter, the insulating rod, and the insulator are disposed in a gas tank. An operating mechanism is disposed on a movable side end portion of the gas tank and connected to the insulating rod. An inner circumferential side space of the bellows, an internal space of the insulator, and an internal space of the operating box are in communication with each other; and pressure in these spaces is lower than pressure in the gas tank.
