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The ABB REF615 HBFBAAAENBA6BNA1XG is a pre-configured variant of the REF615 numerical feeder protection and control relay, part of ABB’s globally recognized Relion® 615 product family. Engineered for medium-voltage (MV) distribution networks up to 36 kV, this specific model—identified by the order code HBFBAAAENBA6BNA1XG—is optimized for European utility and industrial applications requiring standardized overcurrent and earth-fault protection with integrated automation capabilities. The REF615 HBFBAAAENBA6BNA1XG combines high-performance protection functions, real-time metering, event recording, and flexible communication into a compact, panel-mountable unit.
Designed in compliance with IEC 61850 Edition 2, the REF615 HBFBAAAENBA6BNA1XG supports GOOSE messaging for fast interlocking and peer-to-peer communication, enabling substation automation without hardwired logic. It features three-phase current inputs (3I) and one residual (Io) or sensitive earth-fault input, six configurable binary outputs, and a front-accessible USB port for local configuration using PCM600 or the built-in HMI. With SIL 2 certification per IEC 61508 and extensive electromagnetic compatibility (EMC), the REF615 HBFBAAAENBA6BNA1XG ensures reliable operation in electrically noisy environments such as steel mills, data centers, or wind farm collector substations. Its factory-defined configuration reduces engineering time while maintaining full compliance with EN standards for European grid codes.
Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | REF615 HBFBAAAENBA6BNA1XG |
| Manufacturer | ABB |
| Product Type | Numerical Feeder Protection & Control Relay |
| Protection Functions | 3-phase overcurrent (50/51), earth fault (50N/51N), arc protection (optional), auto-reclosing (79) |
| Current Inputs | 3 × Phase (1 A or 5 A), 1 × Residual (Io) or Sensitive Earth Fault (SEF) |
| Binary Outputs | 6 programmable relay outputs (make/break contacts) |
| Binary Inputs | 8 opto-isolated inputs (24–250 V DC/AC) |
| Communication Protocols | IEC 61850-8-1 (GOOSE & MMS), Modbus RTU/TCP, DNP3, SPA bus |
| Front Interfaces | LCD display with keypad, USB (Type B) for local access |
| Operating Voltage | 24–250 V DC or 100–240 V AC (dual-range power supply) |
| Frequency Range | 50/60 Hz ±5% |
| Operating Temperature | –25°C to +55°C |
| Dimensions (W×H×D) | 177 × 177 × 195 mm (panel cutout: 167 × 167 mm) |
| Certifications | IEC 61508 SIL 2, IEC 61850 Ed. 2, CE, UL, CSA, EN 60255 series |
Main Features and Advantages
Pre-engineered for European MV feeders: The REF615 HBFBAAAENBA6BNA1XG comes factory-configured with standard EN-compliant protection settings, eliminating weeks of relay setting engineering. This “plug-and-protect” approach accelerates commissioning for ring main units (RMUs), transformer incomers, and motor feeders across EU utilities.
Integrated arc flash detection (optional): When equipped with optional arc sensors, the REF615 HBFBAAAENBA6BNA1XG can detect internal arcing faults within switchgear in under 4 ms and trigger ultra-fast tripping—significantly reducing incident energy and equipment damage.
IEC 61850 native with GOOSE: Unlike retrofit solutions, the REF615 HBFBAAAENBA6BNA1XG implements IEC 61850 at the firmware level, supporting GOOSE for breaker interlocking, load shedding, and bus transfer schemes without external logic processors.
Comprehensive self-monitoring and cybersecurity: The relay continuously checks its own hardware integrity, CT circuits, and power supply. All firmware is cryptographically signed, and role-based access control (RBAC) prevents unauthorized changes—aligning with NERC CIP and ISO/IEC 27001 requirements.
Advanced metering and disturbance recording: Beyond protection, the REF615 HBFBAAAENBA6BNA1XG logs voltage, current, power, energy, and power quality parameters. It captures 64+ oscillography records (pre- and post-fault) with 4 kHz sampling, aiding root-cause analysis after outages.
Compact and service-friendly design: Despite its rich functionality, the REF615 HBFBAAAENBA6BNA1XG fits into standard 19″ panels or RMU cubicles. Front USB allows on-site updates without opening the enclosure, while removable terminal blocks simplify wiring and replacement.
Application Field
The REF615 HBFBAAAENBA6BNA1XG is widely deployed in medium-voltage distribution systems where reliability, standardization, and smart grid readiness are critical. In European municipal utilities, it protects underground cable feeders in urban ring networks, often coordinating with upstream REF620 relays via IEC 61850 GOOSE for selective fault isolation. Industrial facilities—including automotive plants, semiconductor fabs, and food processing lines—use the REF615 HBFBAAAENBA6BNA1XG to safeguard critical motor centers and process transformers against phase imbalances, ground faults, and short circuits.
Renewable energy integration sites, such as solar farms and onshore wind parks, rely on the REF615 HBFBAAAENBA6BNA1XG to meet grid-code requirements for fault ride-through and anti-islanding detection. Data centers deploy it on secondary unit substations to ensure uptime through fast fault clearance and auto-reclosing sequences. Even in mining and offshore platforms, where space and maintenance access are limited, the REF615 HBFBAAAENBA6BNA1XG’s rugged design and self-diagnostics reduce lifecycle costs. Across all these applications, the REF615 HBFBAAAENBA6BNA1XG delivers utility-grade protection in an industrial form factor—bridging the gap between cost efficiency and operational resilience.
Related Products
REF615 Standard Base Model: Generic version requiring full user configuration; HBFBAAAENBA6BNA1XG is a pre-set variant of this
REF620: Higher-end feeder management relay with more I/O, dual Ethernet, and advanced synchrophasor support
REM610: Motor protection relay from the same 615 series, optimized for asynchronous motors
PCM600: ABB’s engineering tool for configuring, testing, and managing REF615 HBFBAAAENBA6BNA1XG relays
ARC Sensor Kit (e.g., ARK1): Optional fiber-optic arc detection sensors compatible with REF615 HBFBAAAENBA6BNA1XG
RED615: Line differential protection relay for parallel or complex feeders requiring unit protection
Relion® 630 Series: For transmission-level applications requiring distance protection (e.g., REL670)
Installation and Maintenance
Pre-installation preparation: Before installing the REF615 HBFBAAAENBA6BNA1XG, verify that the panel cutout matches the 167 × 167 mm dimension and that adequate rear clearance (≥150 mm) exists for wiring and ventilation. Confirm CT ratios and polarity align with the relay’s factory settings—mismatched CTs may cause misoperation. Ensure the auxiliary supply (24–250 V DC/AC) is stable and protected by a dedicated fuse. Ground the relay chassis to the substation earthing grid using a minimum 6 mm² copper conductor.
Maintenance recommendations: The REF615 HBFBAAAENBA6BNA1XG requires no routine calibration but benefits from annual functional testing using secondary injection. Regularly review event logs and oscillography records via USB or Ethernet to detect incipient faults like deteriorating insulation or loose connections. Keep firmware updated through ABB’s secure update portal to address cybersecurity patches. If replacing the unit, use the “Configuration Backup” feature in PCM600 to transfer settings—though the HBFBAAAENBA6BNA1XG’s standardized config often allows direct swap without re-engineering. Always perform a post-maintenance trip test to validate output contact operation and communication integrity.
