Detailed Product Description wind turbine for home 1.CE proved+7patents 2.high efficiency+small size 3.NO MOQ+wholesale price 4.professional factory wind turbine for home Features of hummer 500W wind turbines: 1. SCF supercritical generator technology, generator weight only 6.5 kg, generator efficiency over 0.78. 2. Quality parts use SKF bearings and so on 3. Sine wave output, drive water pump (< 370w), refrigerator (<130L) etc. 4. High cost performance 5. Low running noise 6. Connect with 300W solar panels to make up the wind-solar hybrid system. Application of Model H2.7-500W wind turbine It can drive color TV, refrigerator (<=130L), pump (<=370W) or other resistive appliances (<500W). Well used in: Housing, office, farm and factory Telecommunications Station TV Transfer Station Monitoring Station (military, hydrology, observatory) Water-pumping Station Main technical data Rated power (W) 500 Maximum output power (W) 1000 Charging voltage (V) DC 24 Blade quantity 3 Blade material GRP Blade diameter (ft.) 9 (2.7m) Start-up wind speed (mph) 7 (3.0m/s) Rated wind speed (mph) 16 (7.0m/s) Rated rotating rate (r/min) 600 Wind energy utilizing ratio (Cp) 0.48 Generator output Frequency conversion AC Output AC frequency (Hz) 0-300 Rated charging current (A) 16.7 The maximum charging current (in a short time)(A) 25 Generator efficiency >0.78 Tower diameter (in.) 3.0*78.7*0.1 (76*2000*3 mm)(3pcs) Tower height (ft.) 20 (6m) Generator weight (lb) 14 (6.5kg) Suggested Battery (Ah) 120/150