Patent ID: 7835140

Claim:
A gas-insulated electric apparatus comprising: a vertically-arranged gas insulation main tank which incorporates a vertically-arranged gas insulation breaker therein; a first gas insulation branch pipe which is connected with one side of an upper portion of the gas insulation main tank while making a substantially right angle with the extending direction of the gas insulation main tank and pulls out a feeder from a movable side of the gas insulation breaker; a second gas insulation branch pipe which is connected with one side of a lower portion of the gas insulation main tank while making a substantially right angle with the extending direction of the gas insulation main tank and connects a fixed side of the gas insulation breaker to a gas insulation bus line; a breaker manipulator which is arranged on an upper side in the extending direction of the gas insulation main tank; a feeder-side current transformer which is incorporated in the first gas insulation branch pipe; a voltage transformer which is arranged on the first gas insulation branch pipe in a state that the voltage transformer is positioned above the first gas insulation branch pipe and uses the feeder as a primary conductor; and an arrestor which is arranged on the first gas insulation branch pipe in a state that the arrestor is positioned above the first gas insulation branch pipe and is connected with the feeder, wherein the second gas insulation branch pipe and the gas insulation bus line are arranged inside of a space surrounded by the gas insulation main tank and the first gas insulation branch pipe; and the height of the gas-insulated electric apparatus at the upper end of each of the breaker manipulator, the voltage transformer and the arrestor is substantially the same.