If the stopped motor lacks one phase of the power supply and closes, generally only a buzzing sound occurs and cannot be started. This is because the symmetrical three-phase alternating current of ...

The YVF2 SERIES FREQUENCY CONVERSION SPEED SPECIAL THREE – PHASE ASYNCHRONOUS MOTOR (with brush) started by the YVF2 SERIES FREQUENCY CONVERSION SPEED SPECIAL THREE – PHASE ASYNCHRONOUS MOTOR metho...