Oxidation is a chemical reaction where transformer oil reacts with oxygen, leading to degradation of the oil's properties. Several specific properties of transformer oil are most significantly affected by oxidation. Acidity increases as oxidation produces organic acids. Increased acidity corrodes the transformer's internal components, such as windings and core, and accelerates the degradation of the paper insulation. Interfacial tension (IFT) decreases. IFT is a measure of the surface tension between the oil and water. As oil oxidizes, it forms polar compounds that reduce IFT, indicating the presence of contaminants and degradation products. Color da....
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