Abstract
This paper encompasses experimental investigations carried out on two different properties like electrical and mechanical properties of Nomex paper insulations immersed in ester oil (rapeseed-based) by adopting accelerated thermally aged process. For sake of comparison, two different types of paper insulation (Nomex paper and Kraft insulation paper) of 5mil thick each have been used. Experimental testing like tan δ test and Tensile strength test were performed for time interval of 48, 72 & 96 h respectively to undergo impact of ageing due to thermal stresses. Test results acquired from electrical and mechanical tests at 120 °C & 150 °C considering thermally aged procedure has been analyzed and presented in this paper to highlight efficacy of such solid insulations for possible futuristic use in modern transformers.
Published Version
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