vertical-axis small wind turbine / helical Savonius rotor
helical Savonius rotor
Silent & graceful power generation. The 4B is suitable for highly visible installations in populated urban areas. Likewise, the 4B or 4A is well suited for multi-unit installations in heavy wind environments in remote locations or offshore where a moderate-level of electrical output is required.
Cut-in speed and power output at any given wind speed varies depending on generator configuration (Star/Delta) & charging voltage (12/24/48VDC).