| 摘要 |
PURPOSE:To enable simple switching-over of tests for AC pressure tightness, lightening impulse and switching impulse by providing a connection switch in a tank filled up with insulation media and by conducting switching of connection by means of an operating shaft. CONSTITUTION:Within the tank 21, the connection switch 26 is housed together with the insulation media, including SF6 gas, an insulation oil, etc. And, by operating the connection switch 26 by means of an operating box 28, the second terminal 22b is connected to the third terminal 22c through switching by a movable terminal 22d in the case of an AC voltage test, while the first terminal 22a is connected to the third terminal 22c through switching by the movable terminal 22d in the case of a lightening impulse voltage test or of a switching impulse voltage test. Accordingly, a preparatory work for testing conducted so far each time when a testing item is changed is simplified. The effect of this device is remarkable in a development test and the like. |
