There is a phased introduction of the new energy efficiency regulations beginning in 2011:
- 16 June 2011 - motors must meet the IE2 efficiency level as a minimum
- 1 January 2015 - motors from 7.5 to 375 kW must meet the higher IE3 efficiency level, or must be use an variable speed inverter drive
- 1 January 2017 - the 2015 regulations are extended down to motors of 0.75kW
Efficiency Classifications
IE1 = Standard Efficiency, similar to the old Eff2
IE2 = High Efficiency, similar to the old Eff1
IE3 = Premium Efficiency, (no previous equivalent)
IE4 = Super Premium Efficiency (not yet fully defined)
Efficiency class IE2 forms part of the new harmonised European standard EN 60034-30:2009 which replaces the old voluntary Eff classes of electric motor efficiency rating, and represents the first phase of the implementation of higher efficiency levels for electric motors.
The regulations are being introduced in Europe under EC Regulation 640/2009 dated 22/7/2009 which implements the Energy using Products (EuP) Directive 2005/32/EC.
They have been designed to slow down the current increase in energy used by electric motor driven systems as they account for 43-46% of the World?s energy consumption.
The new regulations apply to 3-phase asynchronous electric motors with rated voltages up to 1000V in the power range between 0.75kW to 375kW in 2, 4 and 6 pole configurations and rated for continuous duty.
The exceptions detailed in the EC Regulation are as follows:
- Motors having 8 or more poles;
- Motors not rated for continuous duty (S1)
- Motors designed to operate wholly immersed in a liquid;
- Motors integrated into a product where energy performance cannot be tested independently
from the product;
- Motors specifically designed to operate;
- At altitudes exceeding 1,000 metres above sea-level;
- Where ambient air temperatures exceed 40 degrees C;
- In maximum operating temperature above 400 degrees C;
- Where ambient air temperatures are less than -15 degrees C for any motor or less than 0 degrees C for a motor with air cooling;
- Where the water coolant temperature at the inlet to a product is less than 5 degrees C or exceeds 25 degrees C;
- In potentially explosive atmospheres (Ex motors);
- Brake motors
Efficiency Classifications
IE1 = Standard Efficiency, similar to the old Eff2
IE2 = High Efficiency, similar to the old Eff1
IE3 = Premium Efficiency, (no previous equivalent)
IE4 = Super Premium Efficiency (not yet fully defined)
Manufacturer?s declared efficiency values, when comparing the old Eff standard with the corresponding IE code, are likely to differ slightly due to the new methods defined in IEC 60034-2-1:2007, and which have been incorporated within the IEC 60034-30 standard. Motor design has not necessarily changed, just the means by which the efficiency values are measured.
The motors must be equipped with a rating plate containing data specified in IEC 60034-1. This shall also include details of the IE code and the efficiency value of the motor at 100% of its rated output at nominal voltage. Whilst the EC Regulation indicates that the efficiency values at 75% and 50% of rated load should also be shown on the motor nameplate, it is considered that this is unnecessary provided that this data is freely available in Manufacturer?s technical product documentation. Clarification of this point is currently being sought from the European Commission.
The regulations apply to all new motors, whether incorporated within new machines or existing installations, and in maintenance and retrofit applications.
Existing stock at manufacturers warehouses, independent distributors or at machine manufacturers can still be sold or put in to service after 16th June 2011 provided it was placed on to the Market on or before 15th June 2011.
The repairing and rewinding of currently installed motors is still permitted and the rewound motor does not have to comply with the Regulations.
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