Description

The ABB REF620E_F NBFNAANNNCC1BNN1X is a state-of-the-art feeder protection relay from ABB’s Relion® 600 series, engineered for secure and intelligent power distribution in industrial and utility networks. This compact Intelligent Electronic Device (IED) integrates comprehensive protection, control, and monitoring functions for overhead lines, cables, and capacitor banks. As a core component of the REF620 platform, the ABB REF620E_F NBFNAANNNCC1BNN1X delivers adaptive overcurrent (50/51), earth-fault (50N/51N), directional protection (67/67N), and arc-flash detection (optional) in a single ruggedized unit. Its modular architecture supports flexible integration with IEC 61850 Ed 2.0, Modbus, and DNP3 protocols, enabling seamless communication within modern substation automation systems.

Designed for harsh environments, the ABB REF620E_F NBFNAANNNCC1BNN1X features extended temperature tolerance (-40°C to +70°C) and corrosion-resistant housing (IP52 front). The relay’s advanced disturbance recorder captures 128 events with COMTRADE files, while its 5.7″ color LCD enables intuitive local operation. With embedded cybersecurity (IEC 62351) and SIL 2-certified logic, the ABB REF620E_F NBFNAANNNCC1BNN1X minimizes operational risks while optimizing grid reliability. Its plug-and-play design reduces commissioning time by 40% compared to conventional relays, making it ideal for time-critical upgrades in aging infrastructure.

ABB REF620E_F NBFNAANNNCC1BNN1X

Technical Specifications

Main Features and Advantages

The ABB REF620E_F NBFNAANNNCC1BNN1X revolutionizes feeder protection with adaptive setting groups that automatically adjust thresholds based on load cycles or grid topology. Its Directional Overcurrent Protection uses sequence-component polarization for reliable fault discrimination in isolated-neutral networks. The relay’s arc-flash detection option triggers breaker tripping in <2>

Cybersecurity is prioritized through role-based access control, firmware signature verification, and audit logs compliant with IEC 62443-3-3. The ABB REF620E_F NBFNAANNNCC1BNN1X simplifies integration via pre-built IEC 61850 system configurations and auto-schematic generation in PCM600 engineering software. For predictive maintenance, it monitors breaker contact wear (I²t counting) and insulation degradation (CBEMA curves). The device’s dual-power supply option ensures uninterrupted operation during DC failures, while its “FlexLogic” editor enables custom protection schemes without programming. Compared to legacy relays, it reduces wiring by 60% through merging unit support (IEC 61850-9-2LE).

Application Field

The ABB REF620E_F NBFNAANNNCC1BNN1X excels in medium-voltage distribution networks requiring fault selectivity and arc-flash mitigation. In steel plants, its harmonic restraint (HR) function prevents nuisance tripping during transformer energization, while thermal overload protection (49) safeguards crusher motors. For offshore wind farms, the relay’s corrosion-resistant design and grid-loss ride-through logic maintain stability during voltage dips.

Mining operations leverage the ABB REF620E_F NBFNAANNNCC1BNN1X for directional earth-fault protection in resistive-grounded systems, pinpointing cable faults down to 1Ω resistance. Utility substations deploy it for capacitor bank protection with inrush inhibition and unbalance detection (60). In data centers, the relay’s <20>ABB REF620E_F NBFNAANNNCC1BNN1X also supports microgrids through seamless transition between grid-connected and islanded modes.

Related Products

REC620 3BHE020855R0101 – Control relay for bay automation

RET670 3BHE045294R0101 – Transformer differential protection relay

REQ650 3BHE020781R0101 – Voltage regulator controller

RER600 3BHE020767R0101 – Earth-fault protection for compensated networks

SPAJ 110C – Backup fuse failure relay

CMUFS 2.0 – Arc-flash sensor kit

FCI-600 – Fiber-optic converter for IEC 61850-9-2LE

DCP-10 – Redundant power supply module

SDM600A – Substation data manager

RTA600 – Redundant termination assembly

ABB REF620E_F NBFNAANNNCC1BNN1X

Installation and Maintenance

Pre-installation preparation: Verify switchgear compatibility (4U panel space) and auxiliary voltage (label code “CC1” = 110/125V DC). Ground the ABB REF620E_F NBFNAANNNCC1BNN1X using the rear-panel M6 terminal with ≤0.1Ω resistance. Separate analog wiring (>10cm from AC circuits) and use CAT5e-shielded Ethernet cables for GOOSE traffic. Pre-load configuration via PCM600 before mounting to validate IEC 61850 ICD files.

Maintenance recommendations: Perform functional tests biannually using CMC test sets to verify protection thresholds. Clean fiber-optic ports (if equipped) quarterly with IPA wipes. Monitor “Health Status” LEDs for capacitor aging alerts. Update firmware during planned outages using ABB’s Secure Maintenance Dongle. For arc-flash sensors (model CMUFS 2.0), calibrate sensitivity annually per IEC 61482-2. Store disturbance records externally via FTP every 6 months.