1)smooth in operated, 2)Strong loading capacity 3)Fast start up,long work times. Smooth in operated ,strong loading capacity,fast start up,long work times. ModelRated Voltage(V)Frequency(Hz)Power(W)Current(A)Speed(rpm)Capacity(µF)YSZ-3522050350.1612001.0YSZ-4022050400.1912001.0YSZ-4522050450.2112001.0YSZ-5022050500.2312001.2 16" Table Fan Motor