Abstract
The results of a study aimed at evaluating the performance of several polymer compounds when exposed to low magnitude electrical discharges (corona) and high humidity levels are presented in this paper. Three different high temperature vulcanizing (HTV) silicone rubber (SiR) formulations were evaluated in a corona test cell. The magnitude and frequency of the corona discharges and the current flowing through the samples volume were recorded. The physical and chemical changes occurring on the compounds were monitored visually and by means of Fourier Transform Infrared (FTIR) spectroscopy. The results obtained from this study demonstrate that some HTV-SiR formulations used in high voltage outdoor insulation as housing materials may suffer from significant degradation even under the effect of relatively low magnitude corona discharges. On HTV-SiR compounds, such degradation process seems to be greatly determined by the moisture absorption characteristic of the polymer. These findings emphasize the importance of minimizing the occurrence of corona on non-ceramic insulators particularly when operating in outdoor environments.
| Original language | English (US) |
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| Title of host publication | Conference on Electrical Insulation and Dielectric Phenomena (CEIDP), Annual Report |
| Publisher | IEEE |
| Pages | 731-734 |
| Number of pages | 4 |
| Volume | 2 |
| State | Published - 1999 |
| Event | Proceedings of the 1999 68th Annual Conference on Electrical Insulation and Dielectric Phenomena (1999 CEIDP) - Austin, TX, USA Duration: Oct 17 1999 → Oct 20 1999 |
Other
| Other | Proceedings of the 1999 68th Annual Conference on Electrical Insulation and Dielectric Phenomena (1999 CEIDP) |
|---|---|
| City | Austin, TX, USA |
| Period | 10/17/99 → 10/20/99 |
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Industrial and Manufacturing Engineering
- Building and Construction