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논문 기본 정보

자료유형
학술저널
저자정보
Ajumon Somasekharan PillaI (Noorul Islam University) J. Arul Linsely (Noorul Islam Centre for Higher Education)
저널정보
한국전기전자재료학회 Transactions on Electrical and Electronic Materials Transactions on Electrical and Electronic Materials 제22권 제4호
발행연도
2021.8
수록면
439 - 451 (13page)
DOI
https://doi.org/10.1007/s42341-020-00249-1

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In this paper, the “Breakdown Strength” of ester base liquid MIDEL 7131(MIDEL Ltd), Mineral Transformer oil (Grosvenor Oil Service), Diala D (Shell Ltd) and THESO insulating oil (Tetra Corp) that are subjected to three different ageing conditions is examined. The breakdown strength of thermally aged insulating oils with copper and without copper has also been tested. Therefore the effect of copper as a catalyst in ageing of insulating liquids was also examined. After analyzing the effect of copper on ageing indicated that, copper had a huge influence on darkening all the insulating oils except MIDEL 7131 and thereby accelerating the ageing process. The breakdown mechanism of oils has changed due to ageing with copper. In this paper, breakdown comparison of transformer oils are analyzed with different insulating oils like un-aged and aged. Transformer oils breakdown voltage test under 0.9 mm gap spacing and the average breakdown voltage behaviour, field behaviour, maximum field at the needle tip transformer oils are also investigated.

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