Analysis of Leakage Current Calculation Through Thermal Failure Voltage on 150/20 kV Transformers in GIS Simpang, Surabaya. elementer [Internet]. 2024 Nov. 30 [cited 2026 Jul. 11];10(2):97-104. Available from: https://jurnal.pcr.ac.id/index.php/elementer/article/view/6366