... 220Vor380VSingle phase power supply HCBPXZ AC Resonant Withstand Voltage System Product overview: AC Resonant Withstand Voltage System was designed and manufactured for ... can meet the exchange pressure test of substation ,GIS system ,SF6switch,cable and casing that according to the ... 0.1 Hz,.Meanwhile it adopted orthogonal asynchronous stationary carrier modulation mode which make sure that the output ...