Type Of Squirrel-Cage Rotors. A 3 phase squirrel cage induction motor is a type of three phase induction motor which functions based on the principle of electromagnetism. These extended conductors are short circuited with each other by means of copper rings on each sides.
It is very commonly used in industries because it is very cheap, robust, efficient, and reliable.
Squirrel cage type rotor consists of bars of copper that we call conductors. These standard types are called as class a, b, c, d motors of this type employ squirrel cage having relatively low resistance and reactance. The rotor of the motor is constructed as a slip ring type. One type is called squirrel cage motor and the other is called wound rotor induction motor (wrim).