Rotor diameter: 8.0m Blades quantity: 3pcs Direction: Always downwind Blades material: Carbon fiber reinforced plastic Rated output power: 10000w Maximum output: 12500w Working voltage: Dc240v/500v, ac220v/380v Annual average energy production: 20mwh (in rate 5m/s wind speed) Working wind speed: 3-35m/s Initial wind speed: 2.0m/s Nominal wind speed: 10.8m/sï¼?36.4mphï¼? Storm-stand: Up to 55m/s Max rotate speed: 160r/min Wind turbine type: Three-phase, pmg alternator Working temperature: From -40 to +60 c Blade pitch control Variable pitch-www.Windpowercn.Com Over-speed protection Aerodynamic brake + electromechanical disc brake Shut down methods Positive blade pitch Gearbox: None, direct drive