The leakage current will cause overcurrent trip to maintain installation, motor and transformer overheating.
漏泄电流会引发过流维护安装跳闸，使马达和变压器过热。
2
According to the current waveform and actual condition of the motor at two sides of the terminal, it is pointed out that the transformer saturation is the direct reason of causing this fault.
根据电动机首末端两侧电流波形及现场的实际情况，指出电流互感器饱和是导致这次事故的直接原因。
3
Overexcitation of transformer made stator of motor produce current before incorporation with power network, the cause of which is described in detail.