WebGB 24790-2009 English Version - GB 24790-2009 Minimum allowable values of energy efficiency and the energy efficiency grades for power transformers (English Version): GB 24790-2009, GB/T 24790-2009, GBT 24790-2009, GB24790-2009, GB 24790, GB24790, GB/T24790-2009, GB/T 24790, GB/T24790, GBT24790-2009, GBT 24790, GBT24790 WebAbeBooks.com: Power transformers limited value of energy efficiency and energy efficiency rating GB24790-2009(Chinese Edition): Language:Chinese.Paperback. Pub Date: 2010-2-1 Pages: 6 Publisher: Standards Press of China's 4.3 and 4.4 of this standard is mandatory. the rest is recommended. This standard basis by the National Standardization Technical …
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