Rian Trinobeth Purba, Apda Eriansyah, Alfiansyah A, Krisyanto Satria Habeahan, Solly Aryza. An Optimal Effect Of Overload And Unbalanced Load On Transformer Lifetime In 20kv Distribution Substation. infokum [Internet]. 2025Jan.7 [cited 2025Jul.7];13(01):72-7. Available from: http://seaninstitute.org/infor/index.php/infokum/article/view/2758