Sulistyowati, S., Nurhadi, S. and Kharisma, D.D. 2022. Pengaruh optimalisasi maintenance terhadap on load tap changer transformator daya 50 MVA 150/20 kV . JURNAL ELTEK. 20, 2 (Oct. 2022), 103–110. DOI:https://doi.org/10.33795/eltek.v20i2.358.