... torque, low noise, small vibration, big breakaway torque, 1 , motors have the advantage of high efficiency,long working ... ,energy saving , high starting torque, low noise, small vibration, 3, big reakaway torque, reliable operation performance, easy & conveninent maintenance. ... to IEC standards. 4, Y2 series three phase asynchronous electric motors are widely used in many fields, such as machine tools, ...