The protection functions of TVR series never be affected by current intensity of circuit or load, impulse current, unbalance current and load device. It can work for long time under full capability and all kinds of climate. Power consumption is less than 1.5W. Measure highest voltage value when over voltage.Measure lowest voltage value when under voltage. 5 LED indicators. ----● Static phase loss protection ----● Phase sequence protection ----● Over voltage protection ----● Under voltage protection ----● Phase unbalance protection ----● Delay protection ----● Available for all kinds of connection of the motor Over/under voltage protection is according to the average voltage and needs 8 seconds’ confirmation.