Electric engineering rules. Three-phase switchyards for voltages up to 52 kV
NORM herausgegeben am 1.4.1983
Designation standards: STN 333231
Classification mark: 333231
Catalog number: 57758
Note: UNGÜLTIG
Publication date standards: 1.4.1983
Approximate weight : 21 g (0.05 lbs)
Country: Slovak technical standard
Kategorie: Technische Normen STN