Output voltage(on-grid): dc 50-375v Output voltage(off-grid): dc 110v Over speed protection & braking system: Speed control style: pitch control system Brake style: automatic hydraulic brake Advantages of vawt: Nearly quiet Birds friendly More safety features Wonderful performance at low wind speed Captures wind from all directions Longer working life Less maintenance Less requirements on foundation Advantages over other vawt: High efficiency Pitch control to govern speed Automatic hydraulic brake 2375kg