Profile lowers the start-up threshold and increases efficiency at low regimes; the vertical profile. Captures a large volume of air and increases performance at high revs. The result is a better output curve. Unlike common horizontal wind generators, which have to be oriented to the wind direction, vertical axis generators capture wind from all directions.Unlike the common horizontal wind generators that have to work at 600 RPM (revolutions per minute) the EOLO, working at only 60 RPM, does not produce noise. All vertical axis rotors, just by virtue of their intrinsic aerodynamic nature, are self-braking: when they reach their working rotation, the wind blade, which is geared against the wind, works as a brake, stabilising the rotation speed and the efficiency. All our systems can be installed in a few minutes without any need for permission from local or national authorities. Rotor (M39) + Generator 3000W (M32) + rectifier (M37) + pole 130 cm (M40). This item is in the category "Home & Garden\Home Improvement\Electrical Supplies\Alternative Energy Supplies\Wind Power Supplies\Wind Turbines & Kits". The seller is "green_energy" and is located in this country: IT. This item can be shipped worldwide.