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Verification of Insulation Oil Reclamation by Turbidity and Spetrophotometry Measurements



Author(s)

Janvier Sylvestre N’cho¹, Issouf Fofana², Abderrahmane Beroual¹, Thomas Aka-Ngnui¹ and John Sabau³

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DOI:10.17265/1934-8975/2012.05.005

1. AMPERE Laboratory CNRS UMR 5005, Ecole Centrale de Lyon, Ecully 69134, France
2. Canada Research Chair on Insulating Liquids and Mixed Dielectrics for Electrotechnology (ISOLIME), University of Quebec, Chicoutimi G7H 2B1, Quebec, Canada
3.R&D Department, Insoil Canada Ltd., Calgary T3A 4Y7, Alberta, Canada

Oil reclamation with Fuller’s earth is known to have an improved effect on conditioning aged oil. In this paper it is shown that aged oil reclamation effectiveness can be monitored with turbidity and spectrophotometry measurements. These low cost testing techniques offer a useful tool to quantify the effect of Fuller’s earth. Experimental investigations performed in laboratory conditions have shown that the quality of properly reclaimed aged oil can compete with that of new oils. Thus, in addition to extending the life cycle of this non-renewable resource, on-line reclamation of liquid might also prevent the premature ageing of paper insulation. Studying the stability of reclaimed service aged oil samples emphasized the important role played by Fuller’s earth absorption capability.

Insulating oil, reclamation, Fuller’s earth, turbidity, spectrophotometer, decay product, gassing tendency.