REX640 IEC 60870-5-103 Communication Protocol Manual - Grid automation - Bay control and measurement - Power management/Load shedding - Transformer protection - 3 winding - Interconnection protection - Generator protection - Auto synchronization - Capacitor bank protection - Merging unit (9-2LE) - Back-up protection - Motor protection - Feeder protection - Arc protection - Petersen Coil control - Transformer protection - 2 winding - Voltage regulation - Busbar protection (voltage and frequency) - Busbar differential protection (high impedance) - IEC 60870-5-103 Communication Manual - REX640 Protection and control - PCL2 - ANSI