1,higher efficiency 2.energy saving 3.higher locked-rotor-torque 4.lower noise and ... , 400V,415V,440V, 660V8, Frequency: 50Hz/ 60Hz9, Speed: 2800r/m, 1440r/m, 980r/m, 710r/m10, Frame size: 77-35511, Materials: Cast iron ... (B5),Foot and Flange(B35) Data Table: Certification: Product Pictures: Energy Saving Three Phase Y2 Series Electric Motors