BS 137:1922

Porcelain insulators for overhead power lines 3,000 - 150,000 volts.

NORMA vydaná dňa 11.5.1922

The information about the standard:

Designation standards: BS 137:1922
Note: NEPLATNÁ
Publication date standards: 11.5.1922
Approximate weight : 300 g (0.66 lbs)
Country: British technical standard
Kategória: Technické normy BS