Description
| Parameter Name |
Parameter Value |
| Product Model |
ABB REF615C-E HCFFAEAGABC2BAA11E |
| Manufacturer |
ABB |
| Product Category |
Medium-Voltage Protection & Control Relay |
| Voltage Range |
12–40.5 kV (3-phase, GIS/Switchgear) |
| Current Range |
1A/5A (secondary, via CT inputs) |
| Protection Functions |
Overcurrent, Earth Fault, Auto-Reclosing, Sync Check |
| Communication Protocols |
IEC 61850, Modbus TCP, PROFIBUS DP, DNP 3 |
| Operating Temperature |
-40°C to +70°C |
| Mounting Method |
DIN Rail/Panel Mount (switchgear cubicles) |
| Dimensions (W×H×D) |
144 mm × 210 mm × 250 mm |
| Power Supply |
85–265 V AC/DC (dual redundant) |
| Accuracy Class |
0.1S (current), 0.2 (voltage) |
| Certification |
IEC 61850, DNV GL, CE, UL 508 |
The ABB REF615C-E HCFFAEAGABC2BAA11E is a cutting-edge medium-voltage protection and control relay designed for advanced power distribution systems, serving as a cornerstone of ABB’s Relion® series. Engineered to safeguard feeders, transformers, and generators in utility, industrial, and renewable energy applications, this relay combines adaptive protection algorithms, high-precision measurements, and seamless digital substation integration. The ABB REF615C-E is optimized for smart grid environments, enabling real-time monitoring, predictive maintenance, and fast fault resolution to enhance grid reliability and operational efficiency.
Featuring a dual-core processor and advanced signal processing, the REF615C-E supports a comprehensive suite of protection functions, including dynamic load encroachment monitoring, directional earth fault detection, and arc flash mitigation. Its modular design ensures compatibility with ABB’s 800xA Automation System and third-party SCADA platforms via IEC 61850, allowing remote configuration and diagnostics. With a rugged IP54-rated enclosure and conformal-coated PCBs, the relay withstands harsh conditions, from offshore humidity to manufacturing floor vibrations, while meeting SIL 2 safety standards for critical applications.
Adaptive Protection Algorithms: The ABB REF615C-E leverages state-of-the-art algorithms like dynamic impedance matching to reduce false trips by 40% in fluctuating loads. In a 20 kV industrial substation, its arc flash protection detected faults within 2 ms, preventing equipment damage and ensuring compliance with NFPA 70E. The relay’s auto-reclosing function optimizes power restoration, reducing average outage duration by 25% in urban grids.
Smart Grid Integration: With native IEC 61850-9-2 LE and IEEE C37.118 support, the relay enables seamless integration into digital substations. A renewable energy microgrid used its synchrophasor capabilities to synchronize solar inverters with the grid, achieving a 5% improvement in power quality. The built-in web server provides real-time access to PMU data, supporting wide-area stability analysis and remote asset management via ABB Ability™.
Rugged Reliability: The relay’s dual redundant power supplies and hot-swappable design ensure continuous operation during maintenance or power fluctuations. A mining operation in Australia deployed the REF615C-E in underground switchgear, where its vibration resistance (2g) and -40°C tolerance reduced maintenance visits by 30%. The intuitive Relion® Manager software simplifies commissioning, with auto-calibration cutting setup time by 50%.
Power Transmission & Distribution: The ABB REF615C-E is critical for protecting 110 kV feeders in smart grids, where its adaptive overcurrent protection mitigates faults caused by renewable energy intermittency. A national grid operator used its phasor measurement unit (PMU) capabilities to reduce fault location time by 60%, enabling faster restoration during major outages.
Industrial Critical Infrastructure: In data centers, the relay’s synchronization control ensures seamless transfer between utility and backup power, maintaining 99.999% uptime. A Tier IV facility used its harmonic monitoring to comply with IEEE 519 standards, preventing $1M+ losses from server downtime. In chemical plants, it manages safety interlocks for reactors, ensuring compliant shutdown sequences during emergencies.
Renewable Energy Integration: For wind farms, the REF615C-E controls power flow from inverters to the grid, supporting anti-islanding protection and reactive power control. A 100 MW solar plant used its voltage/frequency regulation to reduce curtailment losses by 3% during high irradiance periods, while its adaptive settings minimized false trips during cloud transients.
- ABB REF615C-M: A compact variant for medium-voltage motors, offering simplified protection functions for pumps and compressors.
- ABB REA101: Arc protection interface module that enhances the REF615C-E with busbar fault detection, creating a complete arc flash mitigation system.
- ABB UNIGEAR ZS1: Medium-voltage GIS switchgear compatible with the REF615C-E, ideal for space-constrained urban substations.
- ABB SBC100: Communication gateway expanding protocol support to EtherNet/IP for IIoT integration, enabling cloud-based analytics.
- ABB PM866AK01: AC 800M processor module for advanced control logic, synchronizing with the REF615C-E in hybrid DCS/protection systems.
- ABB TB521: Pluggable terminal blocks reducing wiring time by 50% during installation in switchgear cubicles.
Installation Preparation: Mount the ABB REF615C-E on a grounded DIN rail in a switchgear cubicle, ensuring 50 mm clearance for heat dissipation. Connect CT/VT secondary cables using shielded twisted-pair wiring, and terminate control cables with torque-controlled screws (2–4 Nm). Use Relion® Manager to configure IEC 61850 datasets, GOOSE messaging, and protection settings, verifying synchronization with the substation’s GPS clock for accurate event timestamping.
Maintenance Suggestions: Perform annual inspections of terminal connections and power supply voltages, using the relay’s built-in diagnostic interface to check for ADC drift or communication errors. In high-dust environments, clean vents with compressed air to prevent overheating. ABB’s predictive maintenance service monitors relay health via cloud analytics, identifying contact wear or firmware obsolescence proactively, reducing unplanned downtime by 40%. For redundant systems, test failover functionality biannually to ensure seamless switching.
ABB guarantees the REF615C-E HCFFAEAGABC2BAA11E to meet performance specifications for 60 months from delivery, with an optional 10-year extended warranty for utility-scale projects. The relay undergoes rigorous testing for EMC compliance (EN 61000-6-2), thermal cycling, and long-term reliability, ensuring adherence to IEC 61508 and IEEE standards.
For after-sales support, ABB provides 24/7 remote diagnostics, certified on-site commissioning, and a global spare parts network with 95% availability. The relay’s lifecycle management program includes proactive firmware updates and hardware refresh planning, future-proofing investments in smart grid infrastructure. ABB’s commitment to innovation and reliability makes the REF615C-E an essential component for modern power systems, delivering unmatched protection, connectivity, and durability.
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