... with new technique.b) Y3 series motors have the merits of beautiful modeling, compact structure, low noise, high efficiency, ... machines, agriculture machines and equipments, etc. d) Y3 Series Cast of Iron Three Phase Induction Motor is specially designed for European ... : 50Hz, 60Hz Protection class: IP44 ,IP54Insulation class: B,FMaterials: Cast iron, aluminum (FRAME 63-160) EFF: EFF3, EFF2, EFF1 ...