BS 1538:1956

Specification. Intrinsically-safe transformers primarily for bell-signalling circuits.

NORMA vydána dne 31.12.1956

The information about the standard:

Designation standards: BS 1538:1956
Note: NEPLATNÁ
Publication date standards: 31.12.1956
Approximate weight : 300 g (0.66 lbs)
Country: British technical standard
Kategorie: Technické normy BS