NEMA revises standard for measuring distribution transformer loss
NEMA, the National Electrical Manufacturers Association, has published “TP 2-2005, Standard Test Method for Measuring the Energy Consumption of Distribution Transformers.” The document provides a standardized method for measurement of distribution transformer loss to achieve energy efficiency levels outlined in NEMA publication “TP 1, Guide for Determining Energy Efficiency for Distribution Transformers.”
“TP 2” was revised to address concerns raised by the Department of Energy with the previous edition. Under the Energy Policy and Conservation Act, DOE was tasked to develop rules to adopt test procedures for measuring the energy efficiency of distribution transformers. These revisions are intended to make TP 2 acceptable to DOE so that it will be adopted as the DOE test procedure.
Once the NEMA Transformer Section made the decision to revise the standard in response to DOE’s concerns, it was published within 12 months.
“The NEMA TP 2 standard is nationally recognized as the basis for testing procedures of distribution transformer energy efficiency standards,” says Kyle Pitsor, NEMA’s vice president of government relations. “It is specifically required for new federal energy efficiency standards based on NEMA TP 1 for low-voltage distribution transformers, and is also used and referenced by state governments and agencies. The new revision includes several important changes that were identified as part of a public regulatory discussion last year.”
TP 2-2005 may be viewed or purchased for $66.00 by visiting www.nema.org/stds/tp2.cfm, or by contacting Global Engineering Documents at (800) 854-7179 (within the U.S.), (303) 397-7956 (international), or (303) 397-2740 (fax).
NEMA is the leading trade association in the United States representing the interests of electroindustry manufacturers. Founded in 1926 and headquartered near Washington, D.C., its 400 member companies manufacture products used in the generation, transmission and distribution, control, and end-use of electricity. Domestic shipments of electrical products within the NEMA scope exceed $100 billion.
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