Investigation on leakage current, erosion, and hydrophobic performance ofhigh-voltage insulator coatings of different thicknesses

Authors

SUAT İLHAN
ZEYNELABİDİN ASLAN

DOI

10.3906/elk-1907-234

Abstract

Room-temperature vulcanizing (RTV) silicone rubber is used as a high-voltage insulator coating to enhance the pollution performance of conventional insulators, and the electrical performance of RTV coating depends on the several parameters. The present study shows the effects of the thickness on the leakage current, erosion, and hydrophobic performance of high-voltage insulator coating. Several different thicknesses of RTV silicone rubber were taken into consideration on porcelain substrates. Erosion and leakage current performances of the samples were evaluated by using inclined-plane tests (IPTs) based on the IEC 60587 standard. Eroded masses and fundamental and harmonic components of the leakage currents were investigated with respect to coating thicknesses. On the other hand, hydrophobic features of the samples were evaluated by using dynamic drop tests (DDTs) with regard to CIGRE TB442 documentation. Time to loss of hydrophobicity and the level of the leakage currents were investigated in DDTs considering the thicknesses.

Keywords

RTV coating, hydrophobicity, eroded masses, inclined-plane tests, dynamic drop test

First Page

1197

Last Page

1207

Recommended Citation

İLHAN, SUAT and ASLAN, ZEYNELABİDİN (2020) "Investigation on leakage current, erosion, and hydrophobic performance ofhigh-voltage insulator coatings of different thicknesses," Turkish Journal of Electrical Engineering and Computer Sciences: Vol. 28: No. 2, Article 41. https://doi.org/10.3906/elk-1907-234
Available at: https://journals.tubitak.gov.tr/elektrik/vol28/iss2/41