5000W 300RPM Gearless Permanent Magnet Generator 48V-220V 3 Phase Alternator DIY. Rated speed：300rpm. Rated power: 5000W. 5,Permanent magnet generator rotor using patented alternator, together with the special stator design, effectively reduce the generation of resistance torque, while allowing more wind turbines and generator has good matching characteristics, the unit runs reliability.
eBay