... noise, Little vibration 3,Power supply 380V,660V,50/60Hz 4,Cooling method: IC411 Principle:Y series three-phase induction motors are designed ... no special request for architecture, agricuture, coal, mining and so on, such as blowers, pumps, machine tools, hoist and the ... degreeVolt: 380V/415V/525V/660V 50Hz three phaseConnection way: Y below 3kw Triangle above 4kw Y Series three phase ac motor 30hp