... Auxiliary circuit nominal voltage: AC 220V, 380V, 110V4) Rated frequency: 50 / 60Hz5) Rated current: a) Level bus:<=3,200A ... 50kA, 80kA7) Nominal peak reliability current: 105kA, 176kA 8) Power frequency test voltage: a) Main circuit: 2,500V/min b) Auxiliary circuit ... IP3LO, IP4LO10) Protection: a) In circuit design, operating power source adopted electric move measure (with isolation transformer) b) ...