AEMT - Association of Electrical and Mechanical Trades

The following are the Eco Design Directive Details:

Commission Regulation EU 2019/1781, amendment (EU) 2021/341 sets new requirements for electric motors and variable speed drives:

This Regulation applies to the following products:

• induction electric motors without brushes, commutators, slip rings or electrical connections to the rotor, rated for operation on a 50 Hz, 60 Hz or 50/60 Hz sinusoidal voltage, that:
  • have two, four, six or eight poles;
  • have a rated voltage U N above 50 V and up to and including 1 000 V;
  • have a rated power output P N from 0,12 kW up to and including 1 000 kW;
  • are rated on the basis of continuous duty operation; and
  • are rated for direct on-line operation;
• variable speed drives with 3 phases input that:
  • are rated for operating with one motor refered to in point (a), within the 0,12 kW-1 000 kW motor rated output range;
  • have a rated voltage above 100 V and up to and including 1 000 V AC;
  • have only one AC voltage output. 

The requirements in section 1, and points (1), (2), (5) to (11), and (13) of section 2 of Annex I shall not apply to the following motors:

• motors completely integrated into a product (for example into a gear, pump, fan or compressor) and whose energy performance cannot be tested independently from the product, even with the provision of a temporary end-shield and drive-end bearing; the motor must share common components (apart from connectors such as bolts) with the driven unit (for example, a shaft or housing) and shall not be designed in such a way that the motor can be separated in its entirety from the driven unit and operate independently. The process of separation shall have the consequence of rendering the motor inoperative;
• motors with an integrated variable speed drive (compact drives) whose energy performance cannot be tested independently from the variable speed drive;
• motors with an integrated brake which forms an integral part of the inner motor construction and can neither be removed nor powered by a separate power source during the testing of the motor efficiency;
• motors specifically designed and specified to operate exclusively:
  • at altitudes exceeding 4 000 metres above sea-level;
  • where ambient air temperatures exceed 60 °C;
  • in maximum operating temperature above 400 °C;
  • where ambient air temperatures are less than – 30 °C; or
  • where the water coolant temperature at the inlet to a product is below 0 °C or above 32 °C;
• motors specifically designed and specified to operate wholly immersed in a liquid;
• motors specifically qualified for the safety of nuclear installations, as defined in Article 3 of Council Directive 2009/71/Euratom (8);
• explosion-protected motors specifically designed and certified for mining, as defined in Annex I, point 1 of Directive 2014/34/EU of the European Parliament and of the Council (9);
• motors in cordless or battery-operated equipment;
• motors in hand-held equipment whose weight is supported by hand during operation;
• motors in hand-guided mobile equipment moved while in operation;
• motors with mechanical commutators;
• Totally Enclosed Non-Ventilated (TENV) motors;
• motors placed on the market before 1 July 2029 as substitutes for identical motors integrated in products placed on the market before 1 July 2022, and specifically marketed as such;
• multi-speed motors, i.e. motors with multiple windings or with a switchable winding, providing a different number of poles and speeds;
• motors designed specifically for the traction of electric vehicles.

The requirements in section 3, and points (1), (2), and (5) to (10) of section 4 of Annex I shall not apply to the following VSDs:

• VSDs integrated into a product and whose energy performance cannot be tested independently from the product, that is to say that an attempt to do so would render the VSD or the product inoperative;
• VSDs qualified specifically for the safety of nuclear installations, as defined Article 3 of Directive 2009/71/Euratom;
• regenerative drives;
• drives with sinusoidal input current.

Rewinds:

A good repair or rewind by an AEMT member using the latest specification winding wire and insulation systems and good quality bearings will maintain, and often improve, the efficiency of a motor within its original rated efficiency level band  (see the AEMT EASA Good Practice Guide): www.theaemt.com/technical 

Tolerances for Efficiency Levels