Design the stator winding and find winding factor. Choose width, depth and shape of stator slots. Check class of insulation: slot insulation and whether. Abstract: The shape design of stator slot of 3-phase cage induction motors for iron loss reduction is presented. For optimum shape design, the sensitivity analysis. A squirrel-cage rotor is the rotating part of the common squirrel-cage induction motor. It consists Galileo Ferraris described an induction machine with a two- phase stator The rotor has a smaller number of slots than the stator and must be a have variations in the depth and shape of bars to suit the design classification.