Specification for a.c. disconnectors (isolators) and earthing switches of rated voltage above 1 kV.
NORMA vydána dne 29.8.1975
Designation standards: BS 5253:1975
Note: NEPLATNÁ
Publication date standards: 29.8.1975
Approximate weight : 300 g (0.66 lbs)
Country: British technical standard
Kategorie: Technické normy BS