The ABB REF610 1MRS050775 is a Feeder Protection Relay used in medium-voltage (MV) power distribution systems for protecting electrical feeders from faults and ensuring safe operation.

• The core function of the REF610 is to safeguard MV feeders against various electrical faults that can damage equipment and disrupt power supply.
• It continuously monitors electrical parameters on the feeder and can detect issues like:
  • Overcurrents: Excessive current exceeding safe limits.
  • Short circuits: Abnormal connections between conductors causing high currents.
  • Ground faults: Current leakage to the ground that can damage equipment and pose safety risks.

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