... for rated voltage 24kV, frequency 50Hz three-phase AC power system, widely used in power plants, transformer substation, petrochemical, metallurgical, manufacturing, airport And ... Impulse voltage tolerance(peak)KV125(145 Fractures)4Rated short-time power-frequency voltage tolerance(1min)KV65( 79 Fractures)5Rated currentA630.1250630 ...