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Polymer insulators have been developed to replace ceramic and glass insulators. One polymeric material is an epoxy resin, where the excess is mild, normal hydrophobic, and the preparation process is rapid. Ultraviolet ray radiation can accelerate aging and degradation on surfaces that facilitate the flow of surface electrical currents. This study discusses the effects of ultraviolet light exposure and the addition of fly ash as a filler material to the contact angle, tracking time, and the first leakage current leakage value. This research was conducted on laboratory scale using epoxy resin polymer material (DGEBA and MPDA) mixed with silicone rubber and fly ash with variation of composition 20% (RTV22), 30% (RTV23) and 40% (RTV24). The samples were contaminated with resistivity of 3.95 ± 0.05 μm and were subjected to ultraviolet light for 0, 24, 48, 72 and 96 hours. Measurement of leakage current using Inclined-Plane Tracking (standard IEC 587: 1984) with variation of 3 kV and 3.5 kV. The results showed that the composition of epoxy resin filler and ultraviolet light irradiation greatly affected the angle of contact, the value of the first leakage current leakage, and the length of tracking time. After the measurements, the data obtained before and after the ultraviolet rays of RTV23 sample were better than the RTV22 and RTV24 samples.

ANALISIS PENGARUH SINAR ULTRAVIOLET DAN KOMPOSISI FLY ASH TERHADAP UNJUK KERJA PERMUKAAN BAHAN ISOLASI RESIN EPOKSI SILICONE RUBBER DENGAN VARIASI INJEKSI TEGANGAN TINGGI