Motors placed on the market after 1 January 2015, with a rated output between 7.5 – 375 kW, must have a minimum efficiency class of IE3, or minimum IE2 if they are operated or equipped with electronic speed control, essentially a variable-speed drive (VSD).

It is estimated that electric motors consume 70% of the energy used by European industry.  If you then consider life-cycle energy, consumption costs are likely to be 3300% higher than the cost of the motor.  The EU legislation has been introduced to encourage the adoption of higher efficiency motors, and the EU estimates savings of 20-30% in motor consumption are achievable from the new regulation and which will support the European CO2 reduction programme.

The International Electrotechnical Commission standard IEC 60034-30 defines efficiency classes for motors and harmonises the currently requirements for induction motor efficiency levels around the world. It is intended that motor users will benefit through the availability of more transparent and easier to understand information.

The scope of the new standard is wider than that of the agreement previously in force in Europe. IEC 60034-30 covers almost all motors.

New efficiency classes defined by IEC 60034-30: 2009

The new standard defines IE (International Efficiency) efficiency classes for single-speed, three phase, cage induction motors.  The standard also introduced IE4 Super Premium Efficiency motors which are now becoming available. The IE classes replace the previous CEMEP EFF classes.

– IE1 Standard Efficiency (EFF2)

– IE2 High Efficiency (EFF1)

– IE3 Premium Efficiency –

– IE4 Super Premium Efficiency

From January 2015

The next phase comes into force in January 2015 and all motors from 7.5 to 375kW sold after that time must meet efficiency level IE3 or higher.  However, it will still be permissible to install IE2 motors provided they are equipped with an electronic variable speed drive (VSD).  The final phase from January 2017 will include motors from 0.75kW.

999 Inverters works closely with the manufacturers of both variable frequency inverter drives and motors to ensure its product offering always meets the highest standards, and conforms with current and future regulations.

A Guide to Selection of Efficient Motors & Control s from Gambica

 999 Inverters offers variable speed drives from stock at discounted prices