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IE3 electric motor efficiency rules - what are the exceptions?

The deadline for compliance with new European electric motor energy-efficiency legislation is fast approaching. From 1 January 2015, all 7.5 – 375 kW electric motors sold within the EU must be rated at IE3 efficiency, or IE2 if paired with a variable-speed drive. However, there are some exceptions which you should be aware of.

The new electric motor efficiency regulations do not apply to:

1. Motors designed to operate whilst completely immersed in a liquid

2. Motors integrated into a product (e.g. gear, fan or pump), meaning energy performance can’t be independently tested

3. Motors designed to operate:

  • at altitudes over 1,000 metres above sea level;
  • where ambient air temperature exceeds 40°C;
  • in maximum operating temperature above 400°C;
  • where ambient air temperatures are below -15°C (less than 0°C for a motor with air cooling);
  • where the water coolant temperature at the inlet to a product is lower than 5°C or above 25°C;
  • in potentially explosive atmospheres;

4. Brake motors;

5. Motors with eight or more poles;

6. Motors not rated for continuous duty (S1).

Here at Gibbons we keep ourselves abreast of all the latest electric motor legislation to ensure our customers receive only the most up-to-date products. Order electric motors from Gibbons and you can rest assured your equipment will fully comply with the new EU regulations.

To make sure you’re ready for IE3, call our Sales Manager Paul Scott on 01621 868138 or email

Variable-Speed Drives, Electric Motors

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