Use of Surface Resistance for Assessing Vulnerability of HV Outdoor Insulators to Contamination Flashover

R. S. Gorur, K. Subramanian

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Scopus citations

Abstract

This paper describes the use of surface resistance under wet conditions to evaluate the vulner-ability of HV outdoor insulators to flashover in contaminated locations. The insulators evaluated include porcelain, silicone rubber and EPDM rubber composite insulators. The experiments were performed in the laboratory on clean and artificially contaminated insulators utilizing different modes of wetting, namely, salt-spray, clean-fog and fog produced by ultrasonic devices. It has been shown that there is a critical value of surface resistance below which flashover invariably occurs. This value can be used to assess the likelihood of imminent flashover in the field. Several insulators removed from the field from contaminated locations were evaluated to validate the findings.

Original languageEnglish (US)
Title of host publicationConference on Electrical Insulation and Dielectric Phenomena (CEIDP), Annual Report
Pages406-409
Number of pages4
StatePublished - 2003
Event2003 Annual Report: Conference on Electrical Insulation and Dieletric Phenomena - Albuquerque, NM, United States
Duration: Oct 19 2003Oct 22 2003

Other

Other2003 Annual Report: Conference on Electrical Insulation and Dieletric Phenomena
CountryUnited States
CityAlbuquerque, NM
Period10/19/0310/22/03

ASJC Scopus subject areas

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

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  • Cite this

    Gorur, R. S., & Subramanian, K. (2003). Use of Surface Resistance for Assessing Vulnerability of HV Outdoor Insulators to Contamination Flashover. In Conference on Electrical Insulation and Dielectric Phenomena (CEIDP), Annual Report (pp. 406-409)