Long term stability of insulating mineral oils following their corrosive sulfur removal

Over the last decade dibenzyl-disulphide (DBDS) was found to be present in many mineral insulating oils. This sulfur compound tends to react with the copper of the windings, forming harmful by-products (Cu 2 S). Different techniques to overcome the problem such as metal deactivation, oil change and...

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Bibliographic Details
Main Authors: Scatiggio, F, Maina, R, Tumiatti, V, Pompili, M, Bartnikas, R
Format: Conference Proceeding
Language:English
Subjects:
Chemicals
Copper
Inductors
Minerals
Oil insulation
Passivation
Petroleum
Power transformer insulation
Shunt (electrical)
Stability
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Summary:Over the last decade dibenzyl-disulphide (DBDS) was found to be present in many mineral insulating oils. This sulfur compound tends to react with the copper of the windings, forming harmful by-products (Cu 2 S). Different techniques to overcome the problem such as metal deactivation, oil change and chemical treatment, have been applied. The long term effectiveness of these techniques is examined and compared.
ISSN:1089-084X
DOI:10.1109/ELINSL.2010.5549746