Efficiency of an electric motor is defined as the efficiency with which it converts electrical energy to mechanical energy.
It is a fact that motors consume 70% of energy in industry, therefore using high efficiency motors will result in huge savings & reduction in environmental impact.
The demand for standardised efficiency led manufacturers to develop harmonised international standard and push the issue of IEC (International Electrotechnical Commision) Standard IEC 60034-30-1 & adopted in India as IS: 12615: 2011 efficiency classes for Single speed, three phase, cage induction motors.

Efficiency of an electric motor is defined as the efficiency with which it converts electrical energy to mechanical energy.
It is a fact that motors consume 70% of energy in industry, therefore using high efficiency motors will result in huge savings & reduction in environmental impact.
The demand for standardised efficiency led manufacturers to develop harmonised international standard and push the issue of IEC (International Electrotechnical Commision) Standard IEC 60034-30-1 & adopted in India as IS: 12615: 2011 efficiency classes for Single speed, three phase, cage induction motors.