In the relay contactor control circuit of the motor, the function of zero voltage protection is?
And when the power supply is restored to power supply or the power supply voltage returns to normal, if you do not press the start button again, the motor can not start itself to prevent accidental start
Zero voltage protection is lost pressure protection can not automatically reset after power failure
The so-called zero pressure (or loss of pressure) protection is when the power supply or a serious voltage reduction, the contactor coil loss of power, the solenoid release the main contact is disconnected, the motor automatically cut off from the power supply.
