“Analysis of Leakage Current Calculation Through Thermal Failure Voltage on 150/20 kV Transformers in GIS Simpang, Surabaya”. Jurnal ELEMENTER (Elektro dan Mesin Terapan) 10, no. 2 (November 30, 2024): 97–104. Diakses September 20, 2026. http://ns1.pelatihan-osn.com/index.php/elementer/article/view/6366.