REF620 NBFNAANNNDA1BNN11G ABB Feeder Protection and Control Relay

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The ABB REF620 NBFNAANNNDA1BNN11G is a versatile feeder protection and control IED belonging to the ABB 620 series protection relay family. Designed for medium-voltage distribution feeders, switchgear bays and substation automation, this intelligent electronic device integrates protection, measurement, control, monitoring and communication functions into one compact unit. It is widely deployed in utility distribution substations, industrial power plants, captive power facilities and renewable energy collection stations.

This REF620 unit delivers a comprehensive set of feeder protection functions including phase overcurrent, earth fault protection, directional overcurrent, negative sequence protection, thermal overload protection, voltage protection, frequency supervision and breaker failure protection. It supports flexible protection grading and coordination for radial and loop distribution networks, helping isolate fault sections rapidly while keeping healthy parts of the power network energized. Built-in arc flash protection options reduce damage during internal arc events inside switchgear panels.

Beyond protection, the REF620 NBFNAANNNDA1BNN11G serves as a bay controller for local and remote operation. It handles breaker control, disconnector and earthing switch interlocking, synchrocheck, voltage and current measurement, power and energy calculation, event logging and disturbance recording. High-resolution fault records and sequence-of-event logs help engineers carry out fast root-cause analysis after network faults. Local HMI on the front panel allows operators to view measurements, status, alarms and manually perform bay operations without relying on a remote SCADA system.

Communication capability is a core feature of the ABB REF620. It supports IEC 61850 including GOOSE and MMS, Modbus, DNP3 and other standard protocols for seamless integration into substation automation systems, SCADA and plant DCS. GOOSE messaging enables fast inter-bay signalling for protection interlocking, blocking and accelerated tripping. The device also supports time synchronization via SNTP or IRIG-B for accurate time stamping of all events and fault records.

Configuration, protection setting, disturbance record analysis and firmware management are performed using ABB PCM600 engineering tool. Users can customise protection curves, set alarm limits, define control interlocks and manage user access rights. Extensive self-supervision continuously monitors internal hardware, power supply, memory and communication links; any detected fault will raise an alarm to notify maintenance teams before a protection failure occurs.

The ABB REF620 series is built to withstand the demanding environment inside switchgear rooms. It complies with relevant IEC standards for EMC, vibration, shock and temperature, making it suitable for both indoor and sheltered substation installations. The ordering suffix NBFNAANNNDA1BNN11G defines its hardware configuration, I/O layout, communication ports, HMI options and firmware variant.

We supply genuine surplus, fully tested pre-owned and professionally refurbished ABB REF620 NBFNAANNNDA1BNN11G feeder protection relays. Before shipment, every IED undergoes bench functional testing: protection element simulation, analog input calibration, binary input/output verification, communication connectivity, HMI check, self-supervision test and connector inspection. Real product photos, test reports, packing documents and anti-static export packaging are available for cross-border B2B orders.

If you need matching spare parts including current transformers, voltage transformers, auxiliary power supplies, wiring accessories or other ABB 620 series IEDs such as REM620, REC620 and REU620, send your full part list for combined quotation and consolidated shipment.

We serve substation maintenance teams, EPC contractors, system integrators, power utilities and industrial end users worldwide. Flexible trade terms including EXW, FOB, CIF and DDP are available. We provide clear lead time confirmation and reliable support for substation automation and protection spares.

Submit your inquiry today to confirm stock availability and receive the latest quotation for the ABB REF620 NBFNAANNNDA1BNN11G feeder protection and control relay.

Specification

Part Number: REF620 NBFNAANNNDA1BNN11G Manufacturer: ABB Product Family: 620 Series Product Type: Feeder Protection and Control IED / Bay Controller Primary Application: Medium voltage feeder protection, substation bay control Core Protection: Phase overcurrent, earth fault, directional protection, overload, voltage / frequency protection, breaker failure, arc flash protection Control Functions: Breaker and switch control, synchrocheck, interlocking, local HMI operation Measurement: Current, voltage, power, energy, power factor Recording: Fault recording, disturbance recorder, sequence of events, alarm logging Communication: IEC 61850 (GOOSE, MMS), Modbus, DNP3 Time Sync: SNTP, IRIG-B Engineering Software: ABB PCM600 Mounting: Panel mount for switchgear Standards: IEC protection, EMC and environmental standards for substation IEDs Typical Applications: Utility distribution substation, industrial MV switchgear, solar and wind collector substation, captive power plant, mine power distribution system Applicable Industries: Power utility, renewable energy, heavy industry, mining, petrochemical, manufacturing captive power

REF620 NBFNAANNNDA1BNN11G

FAQ

What is ABB REF620 NBFNAANNNDA1BNN11G used for? The ABB REF620 NBFNAANNNDA1BNN11G is a feeder protection IED. It protects medium-voltage feeders against short-circuit, earth fault and overload, while providing bay-level control, measurement and substation communication.

What does the suffix NBFNAANNNDA1BNN11G mean? This long ordering code specifies the exact hardware build: I/O quantity, communication interfaces, HMI, power supply type and software variant of this REF620 unit. Different suffixes cannot always be swapped directly.

Does REF620 support IEC 61850 and GOOSE? Yes. The REF620 supports full IEC 61850 with GOOSE for fast peer-to-peer protection signalling, which is widely used in modern digital substations.

Do you test this ABB REF620 relay before shipping? All stocked REF620 units are bench tested. We simulate protection pickup and tripping, check analog channels, binary I/O, communication and front HMI. Test records and actual product photos can be provided on request.

Image Alt Texts

ABB REF620 NBFNAANNNDA1BNN11G 620 series feeder protection and control IED ABB REF620 NBFNAANNNDA1BNN11G close-up view, MV feeder protection relay ABB REF620 bay controller installed inside medium voltage switchgear panel

BENTLY BRAND

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