Wijaya, A. et al. 2026. PERFORMANCE ANALYSIS OF MICOM P643 DIFFERENTIAL RELAY ON TRANSFORMER IV OF SEGOROMADU SUBSTATION USING ETAP 21.0.1 SIMULATION: ANALISIS KINERJA RELAI DIFFERENTIAL MICOM P643 PADA TRAFO IV GARDU INDUK SEGOROMADU MENGGUNAKAN SIMULASI ETAP 21.0.1. Jurnal Qua Teknika. 16, 02 (Oct. 2026), 64–77. DOI:https://doi.org/10.35457/quateknika.v16i02.5744.