... Weichai,Quanchai etc.(2)Alternator: 3 phase 4 wires Y-type connection/1 phase 2 wires AVR regulator Power factor:0 ... Frequency:50HZ/1500RPM,60HZ/1800RPM Three phase coltage Available:400V/230,380V/220V,480V Single phase:available:110V,120V,220V,240V Brushless ... uses update technology, which can be automatic control for on-off electricity, remote monitoring, automatic parallel operation,etc…(4)Warranty ...