DIN 42500-3:1995-04
Отменен
Three phase oil-immersed distribution transformers 50 Hz, from 50-up to 2500 kVA, with highest voltage for equipment not exceeding 36 kV - Part 3: Supplementary requirements for transformers with highest voltage for equipment equal to 36 kV; German version HD 428.3 S1:1994
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