Infrared spectroscopy and ferrographic analysis of deposits in oil

• Published in: 11th International Symposium on High-Voltage Engineering (ISH 99) pp. 3.356.P4 - 3.359.P4
• Main Authors: Hamada, M.M, Wahab, M.A.A, Zeitoun, A.G, Ismail, G
• Format: Conference Proceeding Journal Article
• Language: English
• Published: London IEE 1999
• Subjects: Applied sciences; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Dielectric breakdown and discharges; Dielectric, piezoelectric, ferroelectric and antiferroelectric materials; Dielectrics, piezoelectrics, and ferroelectrics and their properties; Electrical engineering. Electrical power engineering; Exact sciences and technology; Liquids and liquid crystals; Materials; Organic insulation; Physics; Transformers and reactors; insulation testing; ash content; ferrographic inspection; infrared analysis; metallic particles; solid insulation degradation compounds; total acidity; transformer oil; water content; power transformer testing; power transformer insulation; transformer oil deposits; dust; paper insulation degradation compounds; infrared spectroscopy; inspection; Infrared spectrometry; Deposit; Oil; Electrical properties; Ferrography; Oil immersed transformer; Chemical properties; Physical properties
• ISBN: 0852967195; 9780852967195
• ISSN: 0537-9989
• DOI: 10.1049/cp:19990773

In this paper, a study on transformer oil deposits has been carried out by infrared analysis and ferrographic inspection. The results showed that the location at which deposits accumulate has a great influence on their constituents. Deposits have higher water content, total acidity and ash content than the corresponding transformer oils. The functional groups of deposits are compared with those of transformer oils. Ferrographic inspection indicated that deposits contain metallic particles, dust, solid and paper insulation degradation compounds. The size of solid particles in deposits has been determined. (4 pages)