An attractive, reliable and economic source of electricity for remote areas. Enough power for lights, radio, television, fan, kitchen appliances, microwave oven, washing machine, power tools and more, depending on the average wind speed. The ideal source of power for telecommunications and scientific equipment. The WFD600W is used to charge 24V/36V or 48V batteries. suitable grid tie inverter, it can also connect to grid. Equipped with It is especially designed to meet the demand from individual householders for a renewable energy source. Advantages of 5-blade over 3-blade 1) 5-blade wind turbines will greatly improve annual energy production in low wind conditions. For areas with average wind speeds of 11 MPH (5m/s). If you compare annual energy output to conventional 3-blade wind turbine, there is an increase of annual energy output of more than 60%. 2) 5-blade wind turbines will dramatically improve the reliability and safety of the wind turbine. The blade rotation speed of a 5-blade turbine is 60% of the rotational speed for a 3-blade wind turbine. 5-blade wind turbines will greatly reduce the chance of over speed control malfunction. This will ensure operational reliability from a long term perspective. 3) The lower blade rotation speed of a 5-blade wind turbine will lower wind turbine noise and make 5-blade wind turbines more community friendly than 3-blade wind turbines. Features : Reliable passive self furling when in storm. Autobrake slows down the blades spin when the batteries are charged Marine quality powder coated aluminum body, water tight housing Smooth running of the rotor because of good balance of the blades. Low noise because of low rotation speed(450rpm only at rated power). Model WFD600W Rated Power 600W at rated wind speed Max Power 700W Kilowatt Hours Per Month 77 kWh/month /average 5.8 m/s Voltage Options 24V, 36V& Grid Tie Start Wind Speed 3 m/s Rated Wind Speed 11 m/s Survival Wind Speed 40 m/s Cut-Out Wind Speed 20 m/s Over speed Protection Temperature Range Rotor Diameter Auto Furl and Electric Brake -30°C~60°C 2.0 m Swept Area 3.14 m2 Rotor speed 450 rpm Rotor Starting Torque 0.4 Nm Blade material Rotor thrust(at 20 meters/second) Generator Noise Tower top weight Aluminum Alloy 175 Newton 3 phase Neodymium permanent magnet alternator Max 1-3 dB above background 26 kg