... 50HZ/1500RPM,60HZ/1800RPM Three phase coltage Available:400V/230,380V/220V,480V Single phase:available:110V,120V,220V,240V ... Controller system1.Standard control panel, including voltmeter, fequency meter, ampere meter,water temperature gauge, oil temperature gauge, oil ... , which can be automatic control for on-off electricity, remote monitoring, automatic parallel operation,etc…(4)Warranty policy ...