... design, smooth rotation, no noise. 3) Low start wind speed (1 m / s wind speed start), anti-typhoon, anti-corrosion, anti-sand ... of magnetic levitation technology, no mechanical friction, long life 3000w wind turbine parameters Rated Power: 3000W Dimensions (height / diameter): 3.30M ... : 315KG Blade Material: Aluminum Number of blades: 3 Minimum start wind speed: 1m / s Minimum power speed: 2.5m / s ...