G - Physics – 01 – R
Patent
G - Physics
01
R
324/21
G01R 31/12 (2006.01) G01R 31/333 (2006.01) H01H 33/26 (2006.01)
Patent
CA 1205860
ABSTRACT OF THE DISCLOSURE There is disclosed a method of testing and verifying a performance for insulation to ground of a disconnecting switch when breaking a charging current. This disconnecting switch has a movable electrode and a fixed electrode which are arranged in a tank so as to face each other. One of these electrodes is connected to an electrostatic capacity load and the other is connected to a power supply. This test method comprises the steps of: applying a voltage from the power supply through the disconnecting switch to the load to cause the voltage to be trapped in the load; and applying a voltage of the polarity opposite to that of the trapped charged voltage from the power supply to the disconnecting switch to cause the discharge between those electrodes, thereby verifying the performance for insulation to ground.
434727
Endo Kaoru
Hosokawa Masao
Ishikawa Toshio
Ozawa Jun
Yamagiwa Tokio
Hitachi Ltd.
Kirby Eades Gale Baker
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