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Phone：+86 17062388866Description
The ABB REF620E_1G NBFNAAAAABC6BBN11G is a highly configurable, multifunction protection and control relay from ABB’s Relion® REF620 series, designed for demanding medium-voltage distribution and sub-transmission applications. As an intelligent electronic device (IED), the ABB REF620E_1G NBFNAAAAABC6BBN11G integrates comprehensive protection—including overcurrent (50/51), undervoltage/overvoltage (27/59), auto-reclosing (79), and breaker failure (50BF)—with advanced features such as IEEE C37.118-compliant synchrophasor measurement, high-resolution fault recording, and real-time power quality monitoring. This model is specifically configured for global utility and industrial use, featuring dual Ethernet ports, universal voltage/current inputs, and full compliance with IEC 61850 Edition 2 for seamless integration into digital substations.
Positioned as a premium successor to the REF615, the ABB REF620E_1G NBFNAAAAABC6BBN11G delivers enhanced processing power, greater communication flexibility, and superior metrology accuracy (Class 0.2S for energy). Its modular architecture supports application-specific configurations without hardware changes, making it ideal for both new installations and brownfield retrofits. The ABB REF620E_1G NBFNAAAAABC6BBN11G not only protects feeders but also serves as a data concentrator, enabling utilities to implement smart grid functionalities like self-healing networks, dynamic voltage regulation, and wide-area monitoring—transforming passive infrastructure into an active, responsive asset.
Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | REF620E_1G NBFNAAAAABC6BBN11G |
| Manufacturer | ABB |
| Product Type | Multifunction Feeder Protection & Control Relay (IED) – REF620 Series |
| Current Input | 1 A or 5 A (software-selectable, 5 channels) |
| Voltage Input | 3-phase phase-to-phase & phase-to-earth (up to 120 V AC) |
| Protection Functions | 50/51, 50N/51N, 27/59, 79 (Auto-Reclose), 50BF, 81O/U, 37 (Undercurrent) |
| Communication | Dual 10/100 Mbps Ethernet (IEC 61850 Ed.2, Modbus TCP, DNP3), RS-485 (Modbus RTU) |
| Synchrophasor Support | IEEE C37.118.1 & .2 (PMU functionality, Class P) |
| Sampling Rate | 64 samples per cycle (3.84 kHz at 60 Hz) |
| Power Supply | 24–250 V DC or 100–240 V AC (dual-range, isolated input) |
| Operating Temperature | -25°C to +55°C |
| Physical Dimensions | 142 x 177 x 215 mm (W x H x D), DIN rail mountable |
Main Features and Advantages
Precision metrology and synchrophasor capability:
The ABB REF620E_1G NBFNAAAAABC6BBN11G functions as both a protection relay and a phasor measurement unit (PMU), delivering time-synchronized voltage and current phasors per IEEE C37.118 with<1>
The ABB REF620E_1G NBFNAAAAABC6BBN11G functions as both a protection relay and a phasor measurement unit (PMU), delivering time-synchronized voltage and current phasors per IEEE C37.118 with<1>
Future-proof communication architecture:
Equipped with dual independent Ethernet ports, the ABB REF620E_1G NBFNAAAAABC6BBN11G supports parallel protocols—IEC 61850 for substation automation, Modbus TCP for SCADA, and DNP3 for legacy utility systems—all simultaneously. GOOSE messaging enables sub-4 ms peer-to-peer tripping without hardwiring.
Equipped with dual independent Ethernet ports, the ABB REF620E_1G NBFNAAAAABC6BBN11G supports parallel protocols—IEC 61850 for substation automation, Modbus TCP for SCADA, and DNP3 for legacy utility systems—all simultaneously. GOOSE messaging enables sub-4 ms peer-to-peer tripping without hardwiring.
Advanced auto-reclosing with adaptive logic:
Unlike basic reclosers, the ABB REF620E_1G NBFNAAAAABC6BBN11G offers multi-shot, sequence-adaptive reclosing with dead-time optimization based on fault type and load conditions. It prevents reclosing onto permanent faults while maximizing service continuity for transient events like tree contact or lightning.
Unlike basic reclosers, the ABB REF620E_1G NBFNAAAAABC6BBN11G offers multi-shot, sequence-adaptive reclosing with dead-time optimization based on fault type and load conditions. It prevents reclosing onto permanent faults while maximizing service continuity for transient events like tree contact or lightning.
High-fidelity fault diagnostics:
With 64 samples/cycle resolution and 10-second pre-fault capture, the ABB REF620E_1G NBFNAAAAABC6BBN11G records detailed oscillography files compliant with COMTRADE. Integrated disturbance direction detection helps pinpoint fault location along the feeder—reducing outage duration and crew dispatch costs.
With 64 samples/cycle resolution and 10-second pre-fault capture, the ABB REF620E_1G NBFNAAAAABC6BBN11G records detailed oscillography files compliant with COMTRADE. Integrated disturbance direction detection helps pinpoint fault location along the feeder—reducing outage duration and crew dispatch costs.
Robust cybersecurity and lifecycle support:
The ABB REF620E_1G NBFNAAAAABC6BBN11G includes role-based access control, audit logging, and secure firmware updates. Backed by ABB’s long-term product support policy, it ensures operational continuity for decades—critical for regulated utility environments.
The ABB REF620E_1G NBFNAAAAABC6BBN11G includes role-based access control, audit logging, and secure firmware updates. Backed by ABB’s long-term product support policy, it ensures operational continuity for decades—critical for regulated utility environments.
Application Field
The ABB REF620E_1G NBFNAAAAABC6BBN11G is deployed across utility distribution networks, industrial microgrids, and renewable interconnection points where reliability, data richness, and grid modernization are priorities. In urban substations, it protects radial and looped feeders while providing synchrophasor data to central control centers for dynamic state estimation. Utilities implementing self-healing grids use the ABB REF620E_1G NBFNAAAAABC6BBN11G’s GOOSE-based logic to automatically isolate faults and restore non-faulted sections within seconds—minimizing SAIDI/SAIFI metrics.
Industrial complexes with critical processes—such as semiconductor fabs or pharmaceutical plants—rely on the ABB REF620E_1G NBFNAAAAABC6BBN11G for ultra-fast fault clearance and power quality trending to prevent production losses. Wind and solar farms use this relay at the point of interconnection to meet stringent grid codes (e.g., FERC 730, ENTSO-E), leveraging its voltage ride-through supervision and reactive power support signaling. During substation digitization projects, engineers replace multiple legacy devices (relays, meters, recorders) with a single ABB REF620E_1G NBFNAAAAABC6BBN11G, reducing panel space, wiring complexity, and lifecycle costs while gaining unified data access.
Related Products
REF615: Entry-level feeder relay; lacks synchrophasor and dual Ethernet
REL670: High-end transmission-level IED for generator-transformer units and busbars
REF610: Basic overcurrent relay for cost-sensitive applications
PCM600: ABB’s official engineering tool for configuration, testing, and firmware management
REF620E_1G NBENAAAAABC6BBN11G: Variant with extended voltage inputs for high-impedance grounding
1MRK003345-ACR01: Alternate ordering code for standard REF620 with similar functionality
TK212A: Ethernet-to-serial gateway for integrating REF620 into legacy SCADA systems
Installation and Maintenance
Pre-installation preparation: Mount the ABB REF620E_1G NBFNAAAAABC6BBN11G on a 35 mm DIN rail in a ventilated enclosure rated for the ambient temperature. Ensure CT and VT wiring uses shielded, twisted-pair cables with shields grounded at one end only. Verify that both Ethernet ports are connected to segregated networks if used for process bus and station bus per IEC 61850 architecture. Confirm control power matches the nameplate before energizing—misapplication can damage internal power supplies.
Maintenance recommendations: Schedule annual secondary injection tests using a three-phase relay test set to validate all protection elements and auto-reclose sequences. After any system event, extract COMTRADE files and event logs via the front USB port or Ethernet for analysis. Keep a backup of the SCL (System Configuration Language) file and device configuration (.CFG) in your asset management system. Firmware updates must be performed using PCM600 with proper version compatibility checks. Clean the display periodically and ensure ventilation slots remain unobstructed to maintain thermal performance of the ABB REF620E_1G NBFNAAAAABC6BBN11G.
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