... As long as the wind speed reached 3m/s, the blades will begin to rotate, during the rotation, the ... 25m/s, when the wind has exceeded its rated speed, the 3PCS centrifugal hammers will produce a strong ... rotation and protect the wind turbine from over speed operation, the maximum RPM of the turbine will ... 180 RPM.4. When the wind speed over 25m/s, if the rotate speed can't be controlled by centrifugal ...