Performance improvement of 33 kV line-post insulators in harsh environment

I. A. Metwally*, A. Al-Maqrashi, S. Al-Sumry, S. Al-Harthy

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)


Comprehensive standard tests were conducted on 33 kV line-post porcelain insulators in order to improve their performance in harsh environment in comparison to the newly introduced polymeric ones. These tests are the lightning impulse withstand and flashover tests, and the AC artificial pollution tests. The latter were conducted in a salt-fog chamber. Silicone rubber insulators showed superior performance than adding heat-shrinkable and wraparound creepage extenders to the existing line-post porcelain insulators or using new polymeric insulators.

Original languageEnglish
Pages (from-to)778-785
Number of pages8
JournalElectric Power Systems Research
Issue number9-10
Publication statusPublished - Jun 2006


  • Creepage extenders
  • Flashover
  • Leakage current
  • Line insulators
  • Silicone rubber

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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