Eteruddin, Hamzah, Hendry Hendry, and Atmam Atmam. 2018. “Analysis of Voltage Sag Due to Short Circuit on the Sub System in Central Sumatera”. International Journal of Electrical, Energy and Power System Engineering 1 (2), 1-5. https://doi.org/10.31258/ijeepse.1.2.1-5.