Three-phase oil-immersed distribution transformers 50 Hz, from 25 kVA to 3150 kVA with highest voltage for equipment not exceeding 36 kV -- Part 1: General requirements. Section 1: Requirement for dual voltage transformers in high-voltage.
NORMA vydána dne 5.12.2017
Designation standards: UNE 21428-1-1:2017
Note: NEPLATNÁ
Publication date standards: 5.12.2017
The number of pages: 8
Approximate weight : 24 g (0.05 lbs)
Country: Spanish technical standard
Kategorie: Technické normy UNE