Protective circuit is set internally for over heat, abnormalvoltage to ensure safe operation.
内置过热，电压异常保护电路，使用更安全。
2
In abnormalvoltage condition, voltage shall be dropped because of sudden increasing voltage due to generator's fault and power off or short circuit time.
在电压异常情况，应电压下降，由于电压突然增加由于发电机的故障和断电或短路时间。
3
The abnormal phenomenon of long time higher neutral voltage shift in a substation is analyzed, which is grounded through arc suppression coil.