jacksonmoss 发表于 2013-12-7 10:25:58

求助 : BS EN 50464-1:2007+A1:2012

BS EN 50464-1:2007+A1:2012
Three-phase oil-immersed distribution transformers 50 Hz, from 50 kVA to 2 500 kVA with highest voltage for equipment not exceeding 36 kVGeneral requirements

sigh007 发表于 2013-12-7 10:25:59

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