The ABB REF615E_D belongs to the Relion® 615 series, a compact feeder protection and control IED for medium voltage distribution networks. The full ordering code HBFHAEAGNBA6ANN1XD defines its fixed hardware I/O layout, communication interfaces, display variant and embedded firmware configuration.
This unit integrates comprehensive feeder protection functions: directional/non-directional overcurrent, sensitive earth fault, voltage supervision, breaker failure detection and auto-reclosing logic. It supports overhead lines, cable feeders and works reliably for radial, ring and meshed power grids.
Adopting withdrawable plug-in construction, it enables fast hot replacement to minimise outage duration. Native IEC 61850, GOOSE, Modbus and DNP3 communications allow seamless integration into digital substation automation systems.
Widely deployed in power utilities, petrochemical plants, mining and industrial distribution switchgear. This exact part number is frequently stocked as critical spare for cabinet maintenance and substation retrofit projects.
As a core member of ABB Relion 615 platform, REF615E_D HBFHAEAGNBA6ANN1XD combines protection, measurement, circuit breaker control and fault recording within a single compact unit.
Compared with generic protection relays, it features flexible earth fault protection algorithms suited for various neutral grounding schemes. The graphical local HMI supports custom single-line diagrams for convenient on-site commissioning and troubleshooting. The complete ordering string guarantees identical hardware configuration, enabling direct plug-and-play replacement without cabinet wiring modification.
Built-in disturbance recorder captures fault waveforms to accelerate failure analysis. Many industrial facilities and power distribution stations maintain inventory of this specific model to avoid prolonged downtime during feeder circuit faults.
Tags: ABB REF615E_D HBFHAEAGNBA6ANN1XD, Medium voltage feeder protection relay, Digital substation IED, ABB Relion spare
