1, high efficiency 2, energy-saving high starting torque 3, low noise, little vibration ... (%)Speed(r/min)T.start/TnTmax/Tn1st/TnKWHP380V/50HZ,Synchronous,2 polesY2-631-20.180.240.50.86527802.22.35.5Y2 ... .816827802.25.5Y2-711-20.370.510.817028002.26.1Y2-712-20.550.751.40.827328002.26.1Y2-801-20.7511 ...