Flow electrification of transformer oil

I. A. Metwally*

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review


Polymer blended and polymer coated insulations in large oil-cooled power transformers are the most recent advances in modern technology. The consequences of the type of solid insulating material; which in contact with the streaming oil, and combined electric and magnetic fields on the electrostatic charging tendency (ECT) of oil are the principal aims of this paper. ECT of transformer oil is experimentally investigated using different types of oils, and solid insulating and electrode materials. All solid dielectrics used show quantitative as well as qualitative changes in oil electrification especially at low temperatures. In addition under combined electric and magnetic fields, when increasing the magnetic field, the conduction current decreases but the streaming current increases.

Original languageEnglish
Pages (from-to)628-631
Number of pages4
JournalConference on Electrical Insulation and Dielectric Phenomena (CEIDP), Annual Report
Publication statusPublished - 1997
Externally publishedYes
EventProceedings of the 1997 Annual Conference on Electrical Insulation and Dielectric Phenomena. Part 2 (of 2) - Minneapolis, MN, USA
Duration: Oct 19 1997Oct 22 1997

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Industrial and Manufacturing Engineering
  • Building and Construction


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