Identifying runtime errors - 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 - Operation Manual - REX615 Protection and control - PCL2 - IEC - ANSI - 03.05.2023

REX615 Operation Manual
  1. Check the error origin from the protection relay's supervision events Main menu > Monitoring > IED status > Self-supervision.
  2. Reboot the protection relay and recheck the supervision events to see if the fault has cleared.
  3. In case of persistent faults, contact ABB for corrective actions.