This study analyzes the effect of variations in the mixture ratio of Virgin Coconut Oil (VCO) and Olive Oil (OO) and the addition of Titanium Dioxide (TiO₂) and Aluminum Oxide (Al₂O₃) nanoparticles on the breakdown voltage, dielectric strength, and moisture content of insulating oil. The tests were conducted using the Determination of the breakdown voltage at power frequency - Test method…