Summary

This TB describes moisture equilibrium and migration in oil-pape rinsulated power transformers. It gives in-depth knowledge of the main sources of moisture contamination, the solubility of water in oils, the adsorption in the cellulose, the physical background for moisture equilibrium and bubble evolution. Practical advice for moisture determination via equilibrium diagrams and for migration time constants, and moisture measurement techniques are provided.

Additional informations

Publication type Technical Brochures
Reference 349
Publication year
Publisher CIGRE
Study committees
  • Power transformers and reactors (A2)
Working groups WG A2.30
File size 1 MB
Pages number 53
Price for non member 110 €
Price for member Free
Moisture Equilibrium and Moisture Migration within Transformer Insulation Systems
Moisture Equilibrium and Moisture Migration within Transformer Insulation Systems