Product details Name:FH Series ModelFH FH SERIES MODEL FH-15KW FH-20KW FH-30KW FH-50KW FH-60KW Rated Power15000W20000W30000W50000W60000W Maximum Power16000W22000W33000W54000W60000W Blade Length4.5m6m7m8m10m Rated Voltage220V-380V220V-380V380V380V380V Start-up Wind Speed4m/s4m/s4m/s4m/s4m/s Rated Wind Speed12m/s12m/s12m/s12m/s12m/s Rotor Diameter of Blades3m4m5m6m8m Gross Weight420kg680kg750kg920kg1320kg Blades ColorsWhite/Multicolor Safe Wind Speed (m/s)≤40m/s Blades Quantity5 Blade MaterialGlass Fiber GeneratorMaglev Generator Control SystemElectromagnet Mount Height (m)6m–20m Generator Protection GradeIP54 Work Temperature-40°C–80°C Overspeed ProtectionElectromagnetic Brake Overload ProtectionElectromagnetic Brake & the Unloading Unit LubricationLubrication Grease Design Life20 Years