BS 519:1933

Tractive armature direct-current nuetral-polar line relays.

NORMA vydaná dňa 1.3.1938

The information about the standard:

Designation standards: BS 519:1933
Note: NEPLATNÁ
Publication date standards: 1.3.1938
Approximate weight : 300 g (0.66 lbs)
Country: British technical standard
Kategória: Technické normy BS