| 摘要 |
<p>In a gas-insulated switching device according to the present invention, a vacuum valve, an insulating rod, and an insulating support are disposed in a pressure tank. The vacuum valve comprises a movable contact, which is disposed on one side of a movable conductor that passes through a bellows, and a fixed contact, which is disposed on a fixed conductor, wherein the movable contact and the fixed contact are in vacuo. The insulating rod is linked to the other side of the movable conductor that passes through the bellows of the vacuum valve. The insulating support accommodates the insulating rod and the other side of the movable conductor therein and electrically insulates and supports the vacuum valve. The gas-insulated switching device is provided with a control box accommodating a control mechanism that is disposed at a movable-side end part of the pressure tank and is connected to the insulating rod. The inner peripheral space in the bellows of the vacuum valve, the inner space of the insulating support and the inner space of the control box are formed so as to communicate with each other, and the pressure within these spaces is at a pressure lower than the pressure inside the pressure tank.</p> |
