The invention discloses a fault removal operating method for a high-
voltage frequency converter. The method comprises the steps that when the high-
voltage frequency converter can not be started after being powered on, whether an operation power source switch of the high-
voltage frequency converter is connected or not is checked, whether a UPS is connected within an interval of a controller of the high-voltage frequency converter or not is checked, if the operation power source switch and the UPS are not connected, the operation power source switch and the UPS are connected, and the
system resets after a fault of the high-voltage frequency converter is removed; when a light fault alarm is given, whether the light fault alarm is the cabinet door
interlocking alarm or the
transformer over-temperature alarm or not is checked; after the fault is removed, a
fault indicator light should be turned off; when a heavy fault alarm is given, whether the heavy fault is a
power unit optical fiber fault or a
power unit overvoltage fault or a high-voltage frequency converter
overcurrent fault or not is checked, the
system resets after the fault is removed, and the high-voltage frequency converter is restarted. By the application of the fault removal operating method, the fault
processing time is greatly shortened and the
utilization rate of the high-voltage frequency converter is improved.