... of cables, overhead lines,transformers,motors,generators and capacitor banks.2.Technical data No.ItemUnitValue1Rated voltagekV1217.52440.52Rated insulation levelRated short time ... ,2000,2500,3150,5Rated short-circuit breaking currentkA20,25,31.5,40,5020,25,31.56Rated short time withstand currentkA20,25 ...