Identifying hardware 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 module with an error.
    Check the relay supervision events in Main menu > Monitoring > IED status > Self-supervision for a faulty hardware module.
  2. Inspect the protection relay visually.
    • Inspect the protection relay visually to find any physical error causes.
    • If you can find some obvious physical damage, contact ABB for repair or replacement actions.
  3. Check whether the error is external or internal.
    • Check that the error is not caused by external origins.
    • Remove the wiring from the protection relay and test the input and output operation with an external test device.
    • If the problem remains, contact ABB for repair or replacement actions.