Development of Transformer Oils in Compliance with IEC 60296:2020 and Study on Their Compatibility with Transformer Materials
The study uses Bohai Bay naphthenic raffinate as feedstock to prepare two transformer oil base oils through tradi-tional extraction process and full hydrogenation process.After blending the two base oils at a specific ratio and adding an-tioxidants,the transformer oil product was produced.Compatibility research between the transformer oil product and trans-former materials was conducted.The results show that the transformer oil product prepared through the developed produc-tion process meets the requirements of IEC 60296:2020 for Class A high-grade transformer oil products,with good low-temperature performance and oxidation stability;according to DL/T 1836-2018 method,the transformer oil product pre-pared has good compatibility with transformer materials.
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