... turbine 2,Low start-up wind speed. 3,high efficiency, long life 4,Easy to install 5, ... CE certificate low wind speed wind turbine1,Effsun wind turbine power generators are most popular ... 240VRotor diameter: 5.2mStart up wind speed: 3m/sRated wind speed: 10m/sSecurity wind speed: 40m/sWorking wind speed: 4~25m/sSpeed regulation method ...