... noise, Little vibration 3,Power supply 380V,660V,50/60Hz 4,Cooling method: IC411 Principle:Y series three-phase ... Its frame central heightAdvantages:high efficiency, low energy consumption, little noise, light weight,small bulk,excellent performance,reliable operation, ... as blowers, pumps, machine tools, hoist and the processing machinery for agricultural and side-line products.Center height of frame ...