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> Industry newsSquirrel Cage Motor
2014-10-07
Squirrel cage motors are the most commonly used induction motors, but the main drawback in them is their poor starting torque due to low rotor resistance.(Starting torque is directly proportional to the rotor resistance). But increasing the rotor resistance for improving starting torque is not advisory as it will reduce the efficiency of the motor (due to more copper loss). One can not even add external resistance for starting of purposes, as the rotor bars are permanently short circuited.(the rotor winding is not enamelled wire coils, it is mostly aluminum casting) These drawbacks are removed by a double squirrel cage motor, which has high starting torque without sacrificing efficiency.
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