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This work is devoted to the study of electrical and physicochemical properties of naphthenic mineral oil and natural ester olive oil mixtures; seven mixtures with different mineral oil/vegetable oil ratios are considered. The main investigated properties are breakdown voltage, density and charging current response. All the physicochemical properties measurements are achieved in respect with IEC standards...
This work aims at the characterization of power transformer oil mixtures by using dc charging currents measurements for long field application times. The principle of this approach is inspired from the technique of measurements carried out on solid dielectrics used in high voltage insulation. It will be applied to characterize mixtures between two compatible oils of different provenances and ages...
This work is devoted to the study of the physico-chemical properties (aspect, colour, density, water content, acidity, discharge voltage, dissipation factor, viscosity and flash point) of mixtures between a used transformer mineral oil and a new one other of the same nature, and compatibles between them for all ratios. It is oriented towards the research of optimal ratios enabling to have acceptable...
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