Rotor diameter: 18.0m Blades quantity: 3pcs Direction: always upwind Blades material: Carbon fiber reinforced plastic Rated output: 50KW Power supplied to Grid 60KW [in 5seconds] working voltage: DC500-800V,AC380-400V Annual average energy production: 110MWH (in rate 5m/s wind speed) working wind speed: 3-25m/s Initial wind speed: 3.0m/s Nominal wind speed: 10.0m/sï¼?33.6mphï¼? Storm-stand: up to 55m/s Max rotate speed: 60r/min Wind turbine type: PM 40 poles synchronous generator, Working temperature: from -40 to +60 C Blade Pitch Control Variable Pitch setting Over-speed Protection -Aerodynamic braking system+ -hydraulic rotor brake Speed Regulate and Shut Down Methods -Electro-Yawing, Positive Pitch and -Electric Magnet dumping brake Gearbox: None, Direct Drive Hub height (m) 18-20-24-35 (free-standing or hydraulic tower)