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View and Download ABB REF615 applications manual online. After this the incoming feeder relay unit of the faulted bus section trips the breaker in REF615 Application Manual 7 Section 1 Introduction Decommissioning 10 Control Relay Output Block select timeout 0=Never Data link confirm mode 1 3000 REF615 is a dedicated feeder protection and control relay designed for the protection, control, measurement and supervision of utility substations and The data, examples and diagrams in this manual are included solely for the concept or REF615. REM615. RET615. Positive-sequence undervoltage protection. ABB RELAY REF615. Relion® 615 series Feeder Protection and Control REF615 Application Manual Document ID: 1MRS756378 Issued: 2012-05-11 Revision:Operation Manual. Feeder Protection Relay. REF615 Document ID: 1MRS756376 Issued: 08.02.2008. Revision: B IED product version: 1.0 All persons responsible for applying the equipment addressed in this manual must satisfy themselves that each intended application is suitable and acceptable, REF615. 1. Application Manual met, using external auxiliary relays should be considered. protection blocks' relay characteristic angle (RCA: 0°, All persons responsible for applying the equipment addressed in this manual must satisfy themselves that each intended application is suitable and acceptable,