Wind wheel diameter: 4/3.5m Rated wind speed: 10m/s Start wind speed: 3m/s Work wind speed: 3 to 25m Safety wind speed: 40m Power rating: 2,000W, (maximum power) 3,000W Rated speed: 400rpm generating forms: permanent magnet 3-phase AC Speed forms: electric yaw Working voltage 220V DC and 240V AC Tower heights: 8m.