... 2,Small size and flexibility, lively colors, beautiful curve, low noise,and environmental harmony.ModelZ-400wZ-600wNameCity ... Speed740r/m640r/mMax Power460w680wStart-up wind speed3m/s3m/sSecurity Wind speed45m/s45m/sRated Wind speed12m/s12m/sEngineThree-phase permanent ... phase commutator Over all three-phase commutator Over-speed wind protection Tip stall protection + turned protection + Electromagnetic ...