... emission level < 65db 3.Less vibration,Easy install ,Free maintenanc 20kw WIND TURBINE Main technical data as follows:Power: 3kWBlade diameter ... rotor speed)120r/min(rated speed)12m/s(rated Power)20KW(max Power)35kw(output voltage)380V(start up wind speed ... machine , water pump ,electric pan, color TV, lighter, fan , charger 20KW Wind Generator/Turbine