
Testing Of Insulating Materials; Methods Of Test For The Determination Of Ionic Impurities In Electrical Insulating Materials By Extraction With Liquids
出版:Verband Deutscher Elektrotechniker

專家解讀視頻
1991 [01/04/1991]
HD 381:1978 - Identical
IEC 60589 : 1.0 - Identical
VDE 0303-33 : 1991 - Corresponds
HD 381 : 200S1 - Identical