PARAMETER VERTICAL WIND TURBINE MODEL NUMBER WKV-600 Rated Power 600w Size(Height / Diameter) 1.32/1.32(m) Blades Material aluminum alloy Start-up Wind Speed 1m/s Minimum Power Generation Wind Speed 2m/s Cut-in wind speed 2.5m/s Rated Wind Speed 12m/s Cut out Wind Speed 15m/s Survival Wind Speed 65m/s Generator Type AC, 3 phases Controller Output Voltage 24\48V Controller Braking System 3-Phase short circuit by NFB brake Ambient Temperature . -30C please contact me: benny@windwindcn.com or visit: www.windwingcn.com