
Porcelain and toughened glass insulators for overhead power lines (3.3kV and upwards).
NORMA vydaná dňa 26.1.1955
Designation standards: BS 137:1941
Note: NEPLATNÁ
Publication date standards: 26.1.1955
Approximate weight : 300 g (0.66 lbs)
Country: British technical standard
Kategória: Technické normy BS