Tangshan Kaicheng frequency converter fault

The failure reasons of Tangshan Kaicheng frequency converter are as follows.

1, inverter overvoltage caused by unstable power supply voltage. Need to measure whether the power supply voltage is stable.

2. The hardware failure of the frequency converter itself leads to over-voltage alarm of the frequency converter. Professional engineers are needed to test the inverter.

3. Frequency converter false alarm caused by electromagnetic interference. This kind of false alarm is very common in the factory environment where multiple inverters are used. It can be solved by adding an inverter input filter or inverter input reactor to the inverter power supply.