Three-phase dry-type distribution transformers 50 Hz, from 100 to 2500 kVA, with highest voltage for equipment not exceeding 36 kV -- Part 1: General requirements.
NORMA vydaná dňa 30.5.2007
Designation standards: UNE 21538-1:2007
Note: NEPLATNÁ
Publication date standards: 30.5.2007
The number of pages: 24
Approximate weight : 72 g (0.16 lbs)
Country: Spanish technical standard
Kategória: Technické normy UNE