TRANS OIL, TRANS OIL EVALUATION METHOD AND TRANS OIL EVALUATION DEVICE

摘要

Provided is a transformer oil that has high environmental compatibility and is expected to further improve the cooling characteristics of a transformer. A trans oil comprising a mixture of a vegetable oil and a silicone oil and containing no mineral oil, wherein the volume ratio of the vegetable oil to the silicone oil is 3: 7 to 7: 3, and the magnetic particles (for example, temperature-sensitive Magnetic particles) are dispersed.