Design of Transformer Oil Purification Equipment

Insulating oil is often used as a material for insulation in transformers rather than gas insulation. Oil insulation is more practical because there is no gas leakage problem, and it is easier to conduct heat. Still, oil is more easily contaminated because oil has particles and water vapor. Transformer oil that has been used for a long time will experience a decrease in its insulation. Condition of oil insulation is necessary to purify the oil. Purification must be expensive because if the location of the transformer is far from the purification site, transportation costs are expensive, and it also takes a long time to complete the purification. In this study, a simple purification equipment design was carried out at a low cost. The prototype design has been tested and functions well to produce a large breakdown voltage. The result has a standard of 59.24 kV with a test temperature of 80°C and a circulation duration of 15 minutes.