GVS9-24 series embedded poles type high-voltage vacuum breaker ... 3.passed test,ISO GVS9-24 series embedded poles type high-voltage vacuum breaker ,apply for ... 24kV, frequency 50Hz three-phase AC power system, widely used in power plants, transformer substation, petrochemical, metallurgical, ... tolerance(peak)KV125(145 Fractures)4Rated short-time power-frequency voltage tolerance(1min)KV65( 79 Fractures ...