... of Blades: 3pcsMaterial of Blades: Fibre glass expoxyCut-in wind speed: 3m/sWorking wind speed: 3-25m/ ... special requested;3.Ce,ccc,iso approved;4. For on-grid working system data, pls contract with ... diameter 4m, 3.8m, 3.2m for different wind place. For output power curve, pls contact with us ... in School2kw off grid inverter 220V 50hz, 230V 50hz, 110v 60hz, 220v 60hz 2kw wind turbine for home use ...