ABB REF615 HBFFAEAGNBC6BNA11G Feeder Protection Relay

Overview

The ABB REF615 HBFFAEAGNBC6BNA11G is a smart feeder protection and control relay from ABB’s renowned Relion® 615 series. Designed to ensure secure, reliable, and flexible protection for medium-voltage networks, this unit combines advanced protection functions with communication and monitoring capabilities.

Built on ABB’s IEC 61850-compliant platform, the REF615 offers comprehensive protection for feeders, cables, and distribution transformers in utility and industrial power systems. It supports intelligent network automation, fault detection, and remote control functions, making it an ideal choice for modern digital substations and smart grid applications.

Applications

The REF615 HBFFAEAGNBC6BNA11G is widely used in:

Medium-voltage distribution systems (1–40 kV)

Feeder and cable protection in utilities and industries

Transformer and motor feeder protection

Smart substations and grid automation systems

Renewable energy integration (wind, solar, hydro applications)

This relay offers comprehensive protection and control for both overhead and underground feeders, ensuring fast fault clearance and minimal system downtime.

Structure and Components

Internally, the REF615 HBFFAEAGNBC6BNA11G features a modular architecture that supports easy customization and maintenance. Its major sections include:

Protection Processor Unit – Executes fault detection, overcurrent protection, and logic control.

Measurement and Signal Conditioning Board – Provides high-accuracy sensing for voltage, current, and frequency.

Communication Module – Enables data exchange through IEC 61850, Modbus, and DNP3 protocols.

Human-Machine Interface (HMI) – A front-panel LCD and keypad allow local parameter setting, event review, and manual control.

Auxiliary Power Unit – Ensures stable operation under varying voltage conditions.

The modular construction supports front-accessible wiring and hot-swappable components, reducing service time and enhancing maintainability.

Key Features

Comprehensive Protection Functions: Overcurrent, earth fault, directional protection, phase reversal, and voltage protection.

Integrated Automation: Logic programmability for control, interlocking, and scheme automation.

High Communication Flexibility: Supports IEC 61850, Modbus, DNP3, and IEC 60870-5-103.

Advanced Fault Analysis: Event recording, disturbance recording, and time stamping (1 ms accuracy).

User-Friendly Interface: Large LCD display with customizable menus.

Rugged Design: Resistant to electromagnetic interference, temperature variation, and vibration.

Cybersecurity-Ready: Built-in password protection and communication encryption.

Technical Specifications

Installation and Commissioning

Mounting:
Install the REF615 HBFFAEAGNBC6BNA11G in a control panel or switchgear compartment. Ensure sufficient clearance for cooling and wiring.

Connection:

Connect the CTs and VTs according to ABB wiring diagrams.

Link communication ports (Ethernet or serial) to the network system.

Supply auxiliary voltage within the rated range.

Configure relay parameters using ABB’s PCM600 software.

Testing and Commissioning:

Verify all phase currents and voltages are correctly measured.

Perform trip and communication tests before energizing the system.

Save and document settings for future reference.

Maintenance and Reliability

The REF615 requires minimal maintenance due to its solid-state design. However, periodic inspection ensures long-term reliability:

Clean terminals and HMI panel annually.

Update firmware via PCM600 when available.

Check communication integrity and system logs regularly.

Verify calibration of CT/VT inputs every 3–5 years.

With an expected operational lifespan exceeding 20 years, the REF615 offers exceptional reliability and long-term protection for your network assets.

Advantages

Fast and selective fault clearance

Multi-protocol communication for flexible system integration

High measurement accuracy and real-time event recording

Compact design for space-saving installation

Enhanced cybersecurity and remote monitoring features

Seamless compatibility with ABB’s Relion® family

Conclusion

The ABB REF615 HBFFAEAGNBC6BNA11G Feeder Protection Relay delivers intelligent, dependable, and flexible protection for modern distribution systems. Its combination of precision sensing, robust communication capabilities, and automation logic makes it a cornerstone of smart grid infrastructure.

Whether installed in utility substations, industrial plants, or renewable energy systems, the REF615 ensures maximum uptime, operational safety, and power system efficiency—a true embodiment of ABB’s leadership in electrical protection technology.