Model: MS3.7-2KW Numbers of Blade: 3pcs Material of Blade: Reinforced fiber glass Diameter of blade: 3.7m Start (cut-in) wind speed: 2m/s Rated Wind Speed: 9 m/s Furling wind speed: 12m/s Outage (cut-out) wind speed: 35m/s Rated rotating speed: 250rpm Security wind speed: 45m/s Wind energy ratio: 42% Generator: Permanent Magnetic alternator Generator rated power: 2000w Max output power: 2600w Output voltage: 220V-300V Overspend Protection: Auto Furl Type of off-course: wind direction is decided by tail Protect: Manual and Full automatic control pole: Flexibility Guy Pole height: 6m Pole diameter: 114mm