Duration and mechanism for suppressive effect of triazole-based passivators on copper-sulfide deposition on insulating paper

@article{Amimoto2009DurationAM,
  title={Duration and mechanism for suppressive effect of triazole-based passivators on copper-sulfide deposition on insulating paper},
  author={Tsuyoshi Amimoto and Eiji Nagao and Junichi Tanimura and Shoichi Toyama and Nobuyuki Yamada},
  journal={IEEE Transactions on Dielectrics and Electrical Insulation},
  year={2009},
  volume={16},
  pages={257-264}
}
The suppressive effect of triazole-based passivators such as 1,2,3-benzotriazole (BTA) and Irgamet 39/sup TM/(CIBA Specialty, Basel, Switzerland) on the deposition of copper sulfide on insulating paper in transformers and reactors was investigated by heating test with bare and paper-wrapped copper plates. Commercially available mineral oil meeting the specification of IEC 60296 was used. This oil contained 136 ppm wt./wt. of dibenzyl disulfide (DBDS). The deposition of copper sulfide occurred… CONTINUE READING

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