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BS 7821-3:1995

Заменен
Three phase oil-immersed distribution transformers, 50 Hz, from 50 to 2500 kVA with highest voltage for equipment not exceeding 36 kV, Supplementary requirements for transformers with highest voltage for equipment equal to 36 kV — 12 стр.
ICS
29.180 Transformers. Reactors / Трансформаторы. Реакторы