Product Information With 7 hummer patented technologies and introducing some special materials, H3.1-1000W wind generator with a weight of 15kg. Due to its smallness and lightness, H3.1-1000W wind generator can swiftly start up at low wind speed (3m/s ), and its  power-making ability is stronger than traditional one, the rated output of it is 1000W, and max output is 2000W. It matches with HUMMER special ALL-IN-ONE inverter system, which combines the functions of battery charger, controller and inverter. The inverter system offers a direct link with solar panels. It is featured by high level efficiency, compact size, out-standing power generation ability. H3.1-1000W wind generator designed with dual protection, one is furling protection, the other is manual stop button. When the wind blows too fast, the generator will deflect driven by wind. H3.1-1000W wind generator's tail pole is made of strong manganese steel, ensuring durability. In additional, we also include a manual stop switch which can turn off the wind turbine by force. Due to this dual protection,  the system is safe and reliable.   Application of H3.1-1000W wind generator Well used in: Housing Telecommunications Station TV Transfer Station Monitoring Station (military, hydrology, observatory) Water-pumping Station   Technical parameters Rated power (W) 1000 Maximum output power (W) 2000 Charging voltage(V) DC 60 Blade quantity 3 Rotor blade material GRP Rotor blade diameter (ft.) 10  (3.1m) Start-up wind speed (mph) 7    (3.0m/s) Rated wind speed (mph) 20  (9.0m/s) Rated rotating rate (r/min) 500 Wind energy utilizing ratio (Cp) 0.45 Generator output Frequency conversion AC Output AC frequency (Hz) 0~400 Rated charging current (A) 16.7 The maximum charging current(in a short time)(A) 30 Generator efficiency >0.8 Tower diameter (in.) 3.5*78.7*0.1  (89*2000*3.5 mm) (4pcs) Tower height (ft.) 26  (8m) Weight of generator (lb) 33  (15kg) Suggested Battery (Ah) 120/150