METHOD OF TESTING AND VERIFYING A PERFORMANCE FOR INSULATION TO GROUND OF A DISCONNECTING SWITCH WHEN BREAKING A CHARGING CURRENT,申请号KR19830003846-传众专利搜索

METHOD OF TESTING AND VERIFYING A PERFORMANCE FOR INSULATION TO GROUND OF A DISCONNECTING SWITCH WHEN BREAKING A CHARGING CURRENT

申请公布号：KR890000692(B1)

申请号：KR19830003846

申请日期：1983.08.17

申请公布日期：1989.03.24

申请人：

HITACHI LTD

发明人：YAMAGIWA, DOGIO;ENDO, KAORU;ISHIKAWA, DOSHIO;OJAWA, JUN;HOSOGAWA, MASAO

分类号：G01R3/00;G01R31/12;G01R31/327;G01R31/333;H01H31/00;H01H33/26

主分类号：G01R3/00

摘要：The switch has a fixed electrode and a movable electrode. A first power supply comprising an equivalent electrostatic capacitance is connected to the movable electrode. An AC power supply output is rectified and via a polarity change-over switch is connected to the first power supply. When a trigger signal is applied to a starter the charges accumulated in the capacitance are discharged so that a pulse-like HV is applied. The method to test and verify insulation to ground when breaking a charging current involves setting the interelectrode gap. A DC voltage is applied from the power supply to a load via the switch to entrap it.