FIELD: electrical engineering. SUBSTANCE: extended groove-type rotor of motor has two one-piece stamped squirrel cages made of conducting strip. Copper winding is arranged in lower layer, and higher resistance brass or iron cage, in upper layer. Holes made in rods of winding permit adjustment of ratio of resistance and inductive reactance of cages. Rotor core can be made solid with toroidal yoke to which teeth are welded after putting the winding on. EFFECT: increased starting torque of motor. 3 cl, 3 dwg
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