FD5.0-3KW Blade diameter: 5.0m Rate rotor speed: 220(r/m) Rate wind speed: 10(m/s) Rate power: 3kw Max power: 4.5kw Output voltage: 220v Start wind speed: 3(m/s) Work wind speed: 3-25(m/s) Safe wind speed: 50(m/s) High of tower: 8m