1)Over-voltage and under-voltage protection: When the power supply voltage is too high and too low, it will be cut off and over-voltage and under-voltage value can be set up.

2)Open-phase protection: three-phase power supply is open phase, the equipment power will be cut off.

3)Phase sequence protection: when there is an error with the three-phase power, power supply will be cut off
4)Timing: recording launching times and working hours
5)Show the current supply voltage
6)Fault records: recording the times and the total time in the event of over-voltage, under-voltage, loss-phase or fault-phase.