Electrical Performance Of Palm Oil And Rice Bran Oil As Transformer Insulating Liquid.

This paper presents a study on the Palm oil (PO) and Rice Bran oil (RBO) as alternatives to transformer oil. The nature of biodegradability, environmental friendly and easy availability makes these oils a suitable replacement for liquid insulation in transformer. Comparative
studies of AC breakdown voltage between these two oils were investigated using two different electrode configurations with a gap distance of 2.5mm. This experimental works was done according to the IEC 60156. The statistical analysis was used to find the withstand
voltage and evaluate breakdown probability for both oils. The results indicated that the breakdown voltages of PO and RBO are comparable to each other under different configurations. The Weibull distribution determined the withstand voltage at 1% for RBO are higher
than PO even though the average of PO is slightly higher compared to RBO.