Power: 600w Rotor diameter: 2.5m Blades quantity: 3 pcs Blades material: frp (composite material) Rated speed: 400r/min Rated output power: 600w Max output power: 750w Output voltage: dc24v/ac220v Start wind speed:3m/s Rated wind speed:8m/s Working wind speed: 3-25m/s Security wind speed: 40m/s Speed regulation: yaw& magnetic resistance Charge control: aic (automatic intelligent control) Wind turbine type: pmg (on constant magnets) Working temperature: from -40 to +60 c Annual average energy production: 1500kwh Recommended accumulators: 300ah Accumulators full charge time: about 8 hours Tower type: pull wire tubular tower or standarding alone tower(optinal) Tower height:6m (optional) weight: 40kgs (without tower) Can supply power for: color tv, lighting, electric fan and charger. Packing is by plywood box.