NEMA Premium efficient transformers Technical Data
◆Eaton's family of NEMA® Premium efficiency transformers provides 30 percent less losses than similarly sized NEMAT TP-1 efficiency models . In the United States, Department of Energy regulation 10 CFR Part 431 requires low voltage dry-type distribution transform-ers to meet NEMA TP-1 efficiency levels . Installing lower-loss NEMA Premium transformers reduces energy consumption, resulting in lower operating costs while reducing harmful emissions . Eaton® is one of the original manufacturers who supported and joined NEMA's Premium efficiency transformers program .
◆Like NEMA TP-1 efficient transformers, the recognized efficiency of NEMA Premium efficient transformers is measured at 75°C and with a linear load of 35 percent of full load rating . The table below shows the difference between the various transformer efficiency levels that have become common over the past few years .
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