Cover IEC 62021-3:2014
größer

IEC 62021-3:2014

Insulating liquids - Determination of acidity - Part 3: Test methods for non-mineral insulating oils

Circulation Date: 2014-03
Edition: 1.0
Language: EN-FR - bilingual english/french
Seitenzahl: 50 VDE Artno.: 220695

Content

IEC 62021-3:2014 describes two procedures for the determination of the acidity of unused and used electrical non-mineral insulating oils. Method A is potentiometric titration and Method B is colourimetric titration. The method may be used to indicate relative changes that occur in non-mineral insulating oil during use under oxidizing conditions regardless of the colour or other properties of the resulting non-mineral oil. The acidity can be used in the quality control of unused non-mineral insulating oil. As a variety of oxidation products present in used non-mineral insulating oil contribute to acidity and these products vary widely in their corrosion properties, the test cannot be used to predict corrosiveness of non-mineral insulating oil under service conditions.