Contents1. Description..................................................................... 32. Functional overview........................................................ 33. Protection functions........................................................44. Application..................................................................... 55. Measurement................................................................. 66. Disturbance recorder......................................................67. Event recorder................................................................78. Circuit-breaker monitoring.............................................. 79. Trip-circuit supervision....................................................710. Self-supervision.............................................................711. Inputs/Outputs.............................................................. 712. Communication.............................................................713. Technical data...............................................................914. Mounting methods...................................................... 1915. Relay case and plug-in unit......................................... 1916. Selection and ordering data.........................................1917. Accessories.................................................................2118. Tools........................................................................... 2219. Terminal diagram.........................................................2420. Approvals....................................................................2521. Certificates.................................................................. 2522. References..................................................................2523. Functions, codes and symbols.................................... 2524. Document revision history........................................... 26DisclaimerThe information in this document is subject to change without notice and should not be construed as a commitment by ABB. ABB assumes no responsibility for any errorsthat may appear in this document.© Copyright 2019 ABB.All rights reserved.TrademarksABB and Relion are registered trademarks of the ABB Group. All other brand or product names mentioned in this document may be trademarks or registered trademarksof their respective holders.Feeder Protection 1MRS756295 GREF610Product version: C2 ABB