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 language | English (US) |
|---|---|
| Title of host publication | Conference on Electrical Insulation and Dielectric Phenomena (CEIDP), Annual Report |
| Pages | 406-409 |
| Number of pages | 4 |
| State | Published - 2003 |
| Event | 2003 Annual Report: Conference on Electrical Insulation and Dieletric Phenomena - Albuquerque, NM, United States Duration: Oct 19 2003 → Oct 22 2003 |
Other
| Other | 2003 Annual Report: Conference on Electrical Insulation and Dieletric Phenomena |
|---|---|
| Country/Territory | United States |
| City | Albuquerque, NM |
| Period | 10/19/03 → 10/22/03 |
ASJC Scopus subject areas
- Building and Construction
- Industrial and Manufacturing Engineering
- Electrical and Electronic Engineering