Warisyu, D., Mangopo, D. and Handoko 2025. COORDINATION ANALYSIS OF OCR AND GFR PROTECTION SYSTEM ON EXPRESS KOYA SUBSTATION 70 20 KV HOLTEKAMP JAYAPURA. Telecommunication, Electrical and Electronics Journal. 2, 3 (Mar. 2025), 30–33. DOI:https://doi.org/10.65306/j.teletronic.v2i3.83.