Quality guarantee: 1.Two-year limited guarantee 2.Highest quality manufacturing standards (iso9001) 3.Wide range of temperature tolerance (-20¡æ¡§d65¡æ) 4.High salt fog, dust and sand resistance 5.Strong wind resistance and high survival wind speed 6.Durable materials and components(i.E. Sweden's skf bearing) Easy transportation and installation: 1.Light and compact size 2.Intuitive online installation guides 3.Wide installation and maintenance network worldwide 4.Perfect after-sales service system Dimensions Technical specifications¡êo Model Airforce 4.1 Rated output power 5 kw Max. Output power 5.1 kw Rated wind speed Grid-tied 380vdc / off-grid 48vdc Max. Wind speed 12 m/s Survival wind speed 20 m/s Start-up wind speed 60 m/s Cut-in wind speed 1.5 m/s Rated rotational speed 2 m/s Max. Rotational speed 390 rpm No. Of blades 455 rpm Rated output power 3 Rotor diameter 4.1 m Blade length 2.02 m Blade material Frp Generator 3 phases pm generator Braking system Electromagnetic braking control system Type Downwind rotor Yaw control Passive Total weight 120 kg Warranty Whole system-2 years Controller Full-automatic control Tower 12 m(optional) Power curve¡êo Totla weight¡êo188 kg Generator¡êo73cm*60cm*53cm 0.232cbm Blades¡êo210cm*55cm*56cm 0.646cbm