Summary
This paper presents experimental results obtained on tracking and erosion resistance test of Silicone Rubber (SiR) under DC voltage with UV radiations suer imposed. The IEC 60587 Inclined Plane Tracking and Erosion Test Method combined with UV radiations were used to assess three different ATH filler combinations viz, 40%, 50% and 60% with the same base polymeric material (SiR). The hydrophobicity property of silicone rubber formulations before and after inclined plane tracking test was studied. Some of the physical and electrical properties were compared before and after inclined plane tracking test. It is inferred from the analysis carried out on the experimentals results that, the intensity of UV radiations plays a major role in deteriorating the surface characteristics of the material. A standard method to evaluate polymeric material for outdoor application is yet to evolve, for DC voltages. The presently available tracking and erosion test setup for AC voltages is modified for DC application by using full wave rectifier circuit and employed to assess the commercially available silicone rubber samples under various positive DC as well as AC voltages. The deterioration is observed to be more in case of +DC than AC voltage. +3.15 KV DC voltage is taken as the test voltage as the deterioration is more severe to other voltages such as +2.25 KV, +4.15 KV and their respective AC voltages. The severity at lower DC voltage is attributed to the closeness of arc from the surface of the material. From the results it is seen that higher percentage of ATH filler content reduces tracking and erosion on SiR speciment, but however, the tracking and erosion was found to be less severe in DC+UV tests when compared to the same DC voltage level without UV superimposition.
Additional informations
| Publication type | ISH Collection |
|---|---|
| Reference | ISH2017_409 |
| Publication year | |
| Publisher | ISH |
| File size | 1 MB |
| Pages number | 6 |
| Price for non member | Free |
| Price for member | Free |
Authors
BÖSTROM
