500W Technical parameters: Numbers of blade (P): 3 Materials of blade: FRP Rotor Diameter (m): 2.7 Out-in (start) wind speed: 2.5 Out-out (outage) wind speed: 25 Rated wind speed (m/s): 8 Rated speed (rotate/minute): 380 Max. Wind speed (m/s): 50 Wind energy ratio (%): 0.41 Generator: Permanent magnetic generator Generator rated power (W): 500 Max.output power (W):700 Output voltage (VDC): 36 Rated current(A): 11.9 Type of off-course: Wind direct-ion is decided by tail Type of limit speed: Standing limited by automatic Protect: Auto Furl