Rated power 20KW Wind Wheel Diameter 9.6 m Rated Rotation Speed 240rpm Start-up Wind Speed 3 m/s Rated Wind Speed 10m/s Working Wind Speed 4-25m/s Security Wind Speed 50M/S Working Temperature 25?~+55? Generator Style 3-phase AC PM Protection Method Electromagnetic Braking Protection Blade Material Reinforced FRP Output Voltag DC96V-DC450V optional