Reminder: June 1, 2016 U.S. Dept. of Energy’s Integral Horsepower Motor Rule Will Go Into Effect

Did you know?…

The motors regulated under expanded scope meet the following nine characteristics:
1. Is a single speed motor
2. Is rated for continuous duty (MG 1) operation or for duty type S1 (IEC),
3. Contains a squirrel-cage (MG 1) or cage (IEC) rotor,
4. Operated on polyphase alternating current (AC) 60-hertz sinusoidal line power,
5. Has 2-, 4-, 6-, or 8-pole configuration,
6. Is rated 600 volts or less,
7. Have a three or four digit NEMA frame size (or IEC metric equivalent), including
those designs between two consecutive NEMA frame sizes (or IEC metric
equivalent) or an enclosed 56 NEMA Frame size (or IEC metric equivalent).
8. Has no more than 500 horsepower, but greater than or equal to 1 horsepower (or
kilowatt equivalent), and
9. Meets all the performance requirements of a NEMA design A, B or C electric IHP
motor or an IEC design N or H electric motor.

Impact to OEMs and End Users

1. Previously unregulated motors may be larger size

2. Premium motors have less slip – higher speed

3. Some designs may be Design A – higher inrush current

4. Some designs in larger NEMA frame

5. Life Cycle Value

  • More material – additional cost for premium efficiency
  • Motor cost 2% – 97% for electricity
  • Can continue to buy and use motors built before June 1, 2016

6. Remember the regulation is point of manufacture, not the end user

7. Significantly adds embedded motors as covered products

We can help answer any questions you may have regarding this amended rule.  Contact us!

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