... , high starting torque,low noise, little vibration. Series Three-Phase Asynchronous Motors Y Specifications:1) Frame sizes: 250 ... Materials: cast iron, aluminum(FRAME 63-160)8) EFF: EFF3, EFF2, EFF19) Poles: 2, 4, ... 6, 8,1010) Cooling method: IC411 (total-enclosed fan-cooled ... D" type for 4kW and upwards14) Ambient temperature: -40°C < θ < 40°C15) The altitude should be lower ...