Product DescriptionColor: White Net Weight: 18kg Gross Weight: 22kg Rotor Diameter: 1.8m Length of Blade: 800mm Length of Body: 1050mm Blades Material Reintorced Nylon Height of Tower(m): 8-12m Staring Wind Speed(m/s): 3.0m/s Cut-in Wind Speed(m/s): 3.8m/s Rated Wind Speed(m/s): 9m/s Survival Wind Speed(m/s): 50m/s Controller Rated DC Output: DC 24V Inverter Rated AC Output: 220V/110V 50HZ/60HZ Over-speed Protection: Electromagnetic Torque Control Generator: Permanent-Magnet Generator Bearing: Mechanical Bearing Transmission Mode: Direct Drive Application Ratio( Cp): 0.4