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Improving Energy Efficiency, One Transformer at a Time

ByJulia Jaskie


Transformers have been and remain an essential part of our electrical infrastructure. Everywhere we look there is a transformer supplying power to industrial, commercial, or residential applications.

Improving the energy efficiency of new transformers is a primary goal for both the U.S. Department of Energy (DOE) and Natural Resources Canada (NRCan). Over the last decade, new and more stringent energy efficiency regulations were put into effect:

  • The United States change occurred January 1st, 2016
  • Canada aligned with the United States effective April 30th, 2018

Hammond Power Solutions, the industry leading manufacturer of standard and custom dry-type transformers in North America, proudly supports the new regulations and the environmental benefits resulting from using higher efficiency transformers.

DOE 2016/NRCan 2019 Compliant HPS Medium Voltage Transformers

The new DOE 2016/NRCan 2019 product lines from HPS are based on extensive customer input resulting in industry leading technologies and materials to meet your most demanding applications.

Medium Voltage Distribution Transformers - HPS Millennium G

With three phase ratings from 15 to 1500kVA and single-phase ratings from 15-333kVA, they feature the newest technology and manufacturing processes. They are suitable for any commercial, industrial or renewable energy application, and can be offered for a variety of environmental conditions and built to meet the most onerous duty.

The HPS Millennium G features a core and coil construction:

  • Manufactured from quality non-aging, cold rolled grain oriented, silicon steel laminations
  • Cores are precision cut to close tolerances which eliminates burrs and improves performance
  • Core is coated to resist oxidation
  • Precision wound with copper or aluminum conductors that are electrically balanced to minimize axial forces during short-circuit conditions
  • Wire or foil conductors for optimum performance for the application
  • Robust interface between core & coils for better short circuit performance
  • Front accessible separate high and low voltage terminals with connectors suitable for either copper or aluminum cables.

Benefits of using the HPS Millennium G include:

  • Meets the minimum efficiency standards mandated in DOE 10 CFR Part 431 (levels as of Jan. 1st 2016), NRCan 2019 SOR/2018-201 (effective April 30th, 2019), resulting in increased dollar savings and positive societal/ environmental payback
  • Designed for indoor or outdoor applications
  • VPI windings are mechanically durable for the most demanding environments
  • Minimal maintenance required beyond removing surface contaminants, such as dust
  • Ease of installation
  • Excellent resistance to short circuits
  • Self-extinguishing in the unlikely event of fire
  • Environmentally friendly

For more information and for individual specs on the three available sizes of the Millennium G, click here.

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Standard Electric Supply Co. is a family-owned distributor, built on delivering outstanding service. For over 100 years, Standard Electric has been the best at what they do; delivering top-quality products, outstanding service, and providing value-added services to customers across the Midwest. Visit to see how Standard Electric can become the solution to your needs.

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