Terminology » Squirrel Cage vs. Slip Ring Induction Motors: Key Differences

Squirrel Cage vs. Slip Ring Induction Motors: Key Differences

induction motor motor squirrel cage slip ring electrical engineering

This page compares squirrel cage induction motors and slip ring induction motors, highlighting the key differences between them.

FeatureSquirrel Cage Induction MotorSlip Ring Induction Motor
Copper LossesLowHigh
Starting TorqueLow, but running torque is goodHigh
EfficiencyHigh (low rotor resistance)Low
Speed VariationVaried by changing polesVaried slightly by changing rotor resistance
Speed StabilityNearly constant, slight fall with loadMore speed falls with load
Starting CurrentHighLow
ApplicationLow power, speed control not requiredHigh starting torque required
Use CasesPrinting machinery, saw mill, flour mill, lathe, blower millsRolling mills, flour mills, lifts, cranes etc.