Three-phase oil-immersed distribution transformers 50 Hz, from 25 kVA to 3 150 kVA with highest voltage for equipment not exceeding 36 kV -- Part 1: General requirements. National complementary annex.
| AENOR | |
|---|---|
| Product Category | Standards and Technical Documents |
| Product Name | UNE 21428-1:2017 |
