Comparison of Energy Efficient Motor With Standard Motor

Comparison of Energy Efficient Motor With Standard Motor

Q. Difference between normal motor and energy efficient motor

Particulars	Standard motor	Energy efficiency motor
1.Material used	They are manufactured with lower quality material and techniques.	They are manufactured with higher quality material and techniques.
	Small length of core.	More length of core.
	Lower quality and thick silicon steel laminations in stator.	Higher quality and thinner steel laminations in the stator.
	Air gap is not optimizes between the rotor and stator.	Optimized and even air gap between rator and stator.
2.Losses	High	They usually have higher service factors and bearing lives, less waste heat output, all of which increase reliability.
3.Starting torque	Sufficient	Very high.
4.Speed	Speed may not be so smooth, jerks, vibrations may be involved.	Smooth speed over a required range and less vibrations.
5.Maintanence	More, less warranty. High failure rates.	Negligible maintenance. Longer warranties. Low failure rates.
6.Operating temperature	At high temperature some problems may arise in the operation.	Can withstand high temperature without any problem.