Effect of moisture on breakdown voltage of polyesterimide used in electrical machines

@article{Nedjar2010EffectOM,
  title={Effect of moisture on breakdown voltage of polyesterimide used in electrical machines},
  author={Mohammed Nedjar and Y. Mecheri and Alain Lamure and Ma{\"e}lenn Aufray and Christophe Drouet},
  journal={2010 Annual Report Conference on Electrical Insulation and Dielectic Phenomena},
  year={2010},
  pages={1-4}
}
This paper deals with the influence of humidity on breakdown voltage of polyesterimide. The specimens were submitted to an hydrolytic aging, under 90% humidity and 30°C temperature, until 3000 h. The breakdown tests were executed under AC and DC voltage. A statistical analysis of the breakdown voltage data was carried out using Weibull model. The 90% confidence bounds were calculated and plotted. The study shows that breakdown voltage varies versus the aging time. Its increase is allotted to… CONTINUE READING

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