Pengaruh Zat Aditif Magnesium Oksida (MgO) terhadap Kekuatan Dielektrik, Viskositas, dan Titik Nyala Metil Ester RBDPO Olein

Abstract

RBDPO Olein Methyl Ester is a derivative of palm oil from triglycerides (oil or fat) produced through esterification and transesterification processes has the potential to be used as a liquid insulation. This study aims to determine the dielectric strength, viscosity and flash point of methyl ester with the addition of Magnesium Oxide (MgO) nanoparticles as an alternative liquid insulation. The results of the test showed that the dielectric strength of RBDPO Olein Methyl Ester in normal conditions before mixing with Magnesium Oxide was very low at 45.6 kV/cm and after mixing it increased by 205.2% at a concentration of 0.05% MgO, while at a concentration of 0.075% it was 167.5% and a concentration of 0.1% increased by 186.8% and met the IEC 296 standard of at least ≥30 kV/2.5 mm or 120 kV/cm. Viscosity testing was carried out using the ASTM D455 method, there was no significant change before and after the addition of MgO, where the highest change decreased by 4.36% at a concentration of 0.05% MgO. Flash point is directly proportional to the concentration of MgO, the higher the concentration of MgO, the flash point also rises, the largest increase occurs at a concentration of MgO 0.1%, which is 73.49% carried out by the AOCS Cc 9c-95 method. From the test results carried out that Methyl Ester RBDPO Olein with the addition of MgO nanoparticles has the potential as an alternative transformer oil with further research to test other characteristics in accordance with the standard characteristics of insulating oil.