... noise, little vibration. Series Three-Phase Asynchronous Motors Y Specifications:1) Frame sizes: 250 2)Rated power:55kw3)Voltage ... IMB5,IMB35,IMB14,IMB3412) Operating mode: S113) Connection: "Y" type for 3kW and downwards, "D" type for 4kW ... θ < 40°C15) The altitude should be lower than 1,000m above the sea level16) Relative humidity: not higher than ... requirements Series three-phase asynchronous motor Y