REF615R Feeder Protection and Control Relay Descriptive Bulletin

This document is a descriptive bulletin for the ABB REF615R, a dedicated feeder protection and control IED designed as a 19-inch rack-mount version of the Relion REF615, offering wire-alike compatibility with the DPU2000R relay for easy upgrades. It details the relay's applications for utility substations and industrial power systems, including protection functions (overcurrent, earth fault, arc flash), standardized communication (IEC 61850, DNP3.0, Modbus), and unique features like GOOSE-based bus protection and pre-emptive condition monitoring.