ABB REF620E_F NBFNAAAANDA1BNN1XF – Feeder Protection and Control IED for Primary Distribution

• Warranty: 365 days

• Delivery: 1 week if in stock; no more than one month at the latest

• Payment: 50% advance payment; full payment prior to delivery

• Express options: FedEx, UPS, DHL

• Feeder protection suite – Typically includes time and instantaneous overcurrent (50/51), earth-fault (50N/51N/64), directional/non-directional elements, plus optional arc-flash supervision for faster clearing.

• IEC 61850-native IED – GOOSE messaging and MMS for substation automation with low latency; reduces interlock wiring and speeds up scheme changes.

• Flexible CT/VT inputs – 1 A/5 A current inputs and 3-phase voltage inputs for directional elements and power measurements.

• Programmable logic – Built-in logic editor (via PCM600) to tailor tripping, interlocks, auto-reclose, and load-shedding sequences without extra PLC hardware.

• Event and disturbance records – COMTRADE/CSV disturbance files and time-stamped events support fast fault analysis and root cause work.

• Multiple communication options – Typically supports IEC 61850 Ed.1/Ed.2; Modbus (RTU/TCP), DNP3, and IEC 60870-5-103 available per ordering code.

• Rugged substation-grade design – Type-tested per IEC 60255 series for EMC, temperature, and vibration; suited for primary distribution switchgear.

• Operator-friendly HMI – Clear mimic, programmable LEDs, and pushbuttons help field crews check status and issue commands safely.

The REF620E_F is well-suited for medium-voltage feeders in primary substations. Typical scenarios include:

• Utility MV feeders with directional earth fault and auto-reclose

• Industrial plants (steel, mining, data centers) needing fast fault isolation and SCADA integration

• Ring main units and breaker-and-a-half schemes where IEC 61850 GOOSE reduces hardwiring

• Refurbishment projects replacing legacy 103/SPA relays with modern IEC 61850 IEDs

One thing I appreciate is how quickly protection settings and logic can be deployed through PCM600, especially when you’re standardizing multiple feeders across a site.

• Reliability – Type-tested hardware with solid disturbance capture; in many cases this shortens fault-finding windows.

• Compatibility – Works with IEC 61850 as well as Modbus/DNP3; easier to plug into mixed-vendor SCADA.

• Cost savings – GOOSE-based schemes can eliminate inter-panel wiring; less copper, fewer interposing relays.

• Support and lifecycle – PCM600 engineering and ABB firmware support keep the device current with evolving grid codes.

A utility customer told us they swapped a mixed fleet of older devices for REF620 units and cut commissioning time by almost a week thanks to reusable templates and GOOSE interlocking. That seems to be a common theme on multi-feeder builds.

• Environment – Install in a clean, ventilated panel per IEC 60255; keep ambient within -40…+55 °C and avoid condensation.

• Wiring – Use shielded twisted pairs for CT/VT secondaries and communication; terminate shields at a single ground point; verify polarity on CTs (dot convention).

• Protection settings – Coordinate 50/51/50N/51N and directional elements with upstream/downstream devices; validate with secondary injection.

• Routine maintenance – Periodic relay test (typically annually), clean HMI and terminals, back up settings and disturbance files; apply approved firmware updates via PCM600 during planned outages.

• Safety – De-energize relevant circuits before CT/VT work; short CT secondaries when disconnected; follow lockout/tagout procedures.

• CE marked; typically UL/cUL recognized for North America

• RoHS compliant; designed and type-tested to IEC 60255 series (protection relays)

• EMC and environmental tests per IEC standards used for primary substations

• Manufacturer’s warranty: 12 months (365 days)

• ABB RTXP 24 test switch for safe secondary injection and relay isolation

• Precision class CTs/VTs matched to 1 A or 5 A inputs as required by settings

• Managed Ethernet switch with IEC 61850 QoS/IGMP snooping for reliable GOOSE messaging

If you need us to validate the NBFNAAAANDA1BNN1XF option string against your single-line and I/O list, we can map the exact binary I/O, comms ports, and auxiliary supply variant so the relay lands fully plug-and-play at site.