Elnizar, Hendri, Herri Gusmedi, and Osea Zebua. 2021. “Analisis Rugi-Rugi (Losses) Transformator Daya 150/20 KV Di PT. PLN (Persero) Gardu Induk Sutami ULTG Tarahan”. Electrician : Jurnal Rekayasa Dan Teknologi Elektro 15 (2), 116-26. https://doi.org/10.23960/elc.v15n2.2197.