Three-phase oil-immersed distribution transformers 50 Hz, from 50 kVA to 2 500 kVA with highest voltage for equipment not exceeding 36 kV -- Part 1: General requirements. National complementary annex.
NORMA vydána dne 4.5.2011
Designation standards: UNE 21428-1:2011
Note: NEPLATNÁ
Publication date standards: 4.5.2011
The number of pages: 24
Approximate weight : 72 g (0.16 lbs)
Country: Spanish technical standard
Kategorie: Technické normy UNE