Automatic restart function of pump motor

On small unattended pump systems, it is often desirable to immediately restore power and automatically resume pump operation after a power failure. However, we found that sometimes after a very short power interruption, when the reflux has already passed through the pump, the asynchronous motor can restart and reach forward speed. In this state, there is water hammer in the outlet pipeline. If the motor of the pump has the ability to start in such an instantaneous state, a device or similar device should be installed on the motor controller to ensure that the pump can only start when it is running with confidence.