| Title: |
Hydrophobicity loss of water-soaked silicone rubber in the presence of partial discharges. |
| Authors: |
Poluektova, Karina; Vasilkov, Sergei; Gulenko, Ivan; Andrey, Samusenko |
| Source: |
International Journal of Plasma Environmental Science & Technology (IJPEST); 2023, Vol. 17 Issue 3, p1-10, 10p |
| Subject Terms: |
Silicone rubber; Electric insulators & insulation; Electric fields; Partial discharges; Salt |
| Abstract: |
The primary cause of premature failure of silicone insulators in humid conditions is the loss of hydrophobicity due to partial discharges. It has been experimentally studied how pre-soaking the surface of a silicone rubber sample in NaCl solution affects the process of hydrophobicity loss. Partial discharges occur from droplets rolling down an inclined sample under AC voltage of 35 kV, which corresponds to the average electric field strength of 3.5 kV cm-1. It is demonstrated that the pre-soaking of the sample within 336 hours significantly reduces the rate of droplet runoff, the time of onset of the first partial discharges, and the duration of full hydrophobicity loss. This is observed for three different types of silicone rubber: Silfor, Powersil, RTV. [ABSTRACT FROM AUTHOR] |
| : |
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| Database: |
Complementary Index |