Electric engineering rules. Three-phase switchyards for voltages over 52 kV
NORM herausgegeben am 1.6.1982
Designation standards: STN 333230
Classification mark: 333230
Catalog number: 57755
Note: UNGÜLTIG
Publication date standards: 1.6.1982
Approximate weight : 21 g (0.05 lbs)
Country: Slovak technical standard
Kategorie: Technische Normen STN