Model: 500w H2.7-500w wind turbine which features high efficiency and low rated wind speed introducing several patented technologies and some special materials. All of the wind generators are matched with wind-solar hybrid inverter controller, which can connect solar panel within 250w simultaneously. The off-grid wind turbine is matched with 2pcs 12vdc batteries in series, and on-grid system can connect to state grid. Our products are well used in: Housing Telecommunications station Tv transfer station Monitoring station (military, hydrology, observatory) Water-pumping station Techinal parameter of hummer h2.7-500w: Rated power(w) 500 Maximum output power(w) 1000 Charging voltage (v) dc24v Blade quantity 3 Blade material grp(glass fiber reinforced plastic) Blade diameter(m) 2.7 Start-up wind speed (m/s) 3 Rated wind speed(m/s) 7 Rated rotating rate(r/min) 600 Wind energy utilizing ratio(cp) 0.48 Generator output single-phase frequency conversion ac Output ac frequency(hz) 0~300 Rated charging current(a) 15 The maximum charging current (in a short time )(a) 25 Generator efficiency>0.78 Tower height(m) 6 Generator weight (kg) 6.5 Battery 12v 150ah/200ah:2pcs. N.W is 312kg, contain 3 plywood containers.