Summary

This document deals with various aspects of the problem with copper sulphide in transformer insulation. Possible mechanisms of copper sulphide formation and of failure are discussed, and also the influence of temperature, oxygen content, ageing of the oil, etc. Experiences of mitigation techniques are shared, and recommendations for owners of transformers and reactors are given.

Additional informations

Publication type Technical Brochures
Reference 378
Publication year
Publisher CIGRE
Study committees
  • Power transformers and reactors (A2)
Working groups WG A2.32
File size 771 KB
Pages number 38
Price for non member 80 €
Price for member Free
Copper Sulphide in Transformer Insulation
Copper Sulphide in Transformer Insulation