Oils with presence of corrosive sulfur: mitigation and collateral effects

  title={Oils with presence of corrosive sulfur: mitigation and collateral effects},
  author={Fabio Scatiggio and Massimo Pompili and Ray Bartnikas},
  journal={2009 IEEE Electrical Insulation Conference},
Recent years have witnessed a relatively large number of power transformers and shunt reactors failures, which were attributed to the presence of corrosive sulfur compounds in the insulating oils and their attending reactions with copper to form electrically conductive copper sulphides. The associated problems appeared to be initially resolved by the addition to the insulating oil small amounts of a metal deactivator, a derivative of 1,2,3 benzotriazole (BTA). However, over the past four years… CONTINUE READING
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