... -phase six-step , taper, straight, YH computer control etc.4. Inverter control .Input three-phase AC 380V. If use single-phase ... need to change the wire transport motor (JW series three-phase asynchronous motor), as long as change the motor from Y shape connect to ... put on, when the frequency switching off, the protection will be cancelled, therefore , no other switch is needed.7. No switch is ...