Technical requirement: 1.Creepage distance:600mm 2.Rated E&M failing load:13kN 3.Lightningimpulse withstand voltage:125kV 4.Power frequency DRY withstand voltage:75kV 5.Power frequency WET withstand voltage:55kV 6.Power frequency breakdown voltage:160kV 7.Rated voltage:24kV 8.AccordingtolEC60383-1:1993