Model: Hummer wind turbine 2kw H-3.8-2kw Wind turbine which features high efficiency and low rated wind speed introducing several patented technologies and some special materials. We own 7 patents for the wind generators of which 2 is the international. Such as the technology of start-up in the breeze. And our products are famous for the small in size, light in weight and high in efficiency Please contact us for the detail. Application Well used in: Housing Telecommunications Station TV Transfer Station Monitoring Station (military, hydrology, observatory) Water-pumping Station Technical Parameter Rated power(W) 2000 Maximum output power (W) 3200 Charging voltage (V) DC 120V Blade quantity 3 Rotor blade material GRP Rotor blade diameter(m) 3.8 Start-up wind speed (m/s) 3.0 Rated wind speed (m/s) 9.0 Rated rotating rate (r/min) 450 Wind energy utilizing ratio (Cp) 0.45 Generator output single-phase frequency conversion AC Rated charging current (A) 15 The maximum charging current (in a short time )(A) 28 output AC frequency (Hz) 0-370 Generator efficiency >0.8 Tower diameter(mm)114*2000*5 Tower height(m) 10 The weight of generator(kg) 25 Battery 12V 150Ah/200Ah 10pcs