Squirrel Cage Induction Motors - Performance Versus Efficiency

The importance of operating motors at peak efficiency for maximum energy savings is discussed. Comparisons of standard motors and high-efficiency motors are shown. Optimum motor design requires a compromise between the various parameters. The effect of starting torque and locked rotor amperes on efficiency and power factor is demonstrated. Proper motor application can result in significant energy cost savings over the life of the motor. These savings can be greater than the initial cost of the motor.