This manual - Arc protection - Bay control and measurement - Merging unit - Transformer protection - 2 winding - Feeder protection - Voltage regulation - Capacitor bank protection - Grid automation - Busbar differential protection (high impedance) - Line differential protection - Back-up protection - Motor protection - Busbar protection (voltage and frequency) - Interconnection protection - Generator protection - Power management/Load shedding - Modbus Communication Manual - REX615 Protection and control - PCL2 - IEC - ANSI - 19.04.2023

The communication protocol manual describes a communication protocol supported by the protection relay. The manual concentrates on vendor-specific implementations.