NEMA class D
Rotor with small bars placed near the surface of the rotor (higher-resistance material)
High resistance (due to its small cross section) and a low leakage reactance X2 (due to the bar’s
location near the stator)
Like a wound-rotor induction motor with extra resistance inserted into the rotor.
Because of the large resistance, the pullout torque occurs at high slip, and starting torque will be
quite high, and low starting current.
Typical applications – extremely high-inertia type loads.