Three-phase liquid -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
NORMA vydaná dňa 1.12.2021
Designation standards: UNE 21428-1:2021
Publication date standards: 1.12.2021
The number of pages: 21
Approximate weight : 63 g (0.14 lbs)
Country: Spanish technical standard
Kategória: Technické normy UNE