Product Overview
The ABB REF615 is a high-performance feeder protection and control relay designed for utility substations and industrial power systems. Part of ABB’s Relion® 615 series, the REF615 features a compact, withdrawable-unit design and fully complies with IEC 61850 standards for communication and interoperability. This relay actively safeguards electrical networks while providing advanced monitoring and flexible integration options.
Key Features
Comprehensive Protection
- Protects against overcurrent, both directional and non-directional.
- Provides earth-fault protection, including directional and non-directional options.
- Monitors overvoltage, undervoltage, and residual voltage conditions.
- Supports frequency protection, including overfrequency, underfrequency, and rate-of-change detection.
- Detects phase discontinuities and high-impedance restricted earth faults.
- Offers optional arc fault protection to enhance system safety.
Advanced Monitoring
- Utilizes multifrequency admittance-based earth-fault detection for high-impedance networks.
- Measures current, voltage, and overall power quality continuously.
- Records faults and events for detailed system analysis.
Enhanced Communication
- Supports multiple protocols, including IEC 61850 (Edition 2), Modbus, DNP3, and IEC 60870-5-103.
- Provides redundant communication with HSR, PRP, and RSTP protocols.
- Integrates via Ethernet, RS-485, RS-232, or fiber optic interfaces.
User-Friendly Design
- Offers pre-configured standard setups for quick deployment.
- Local HMI with push buttons enables easy control and monitoring.
- Fully compatible with ABB’s PCM600 software for advanced configuration.
Technical Specifications
| Parameter | Details |
|---|---|
| Product Version | 5.0 FP1 |
| Communication Protocols | IEC 61850, Modbus, DNP3, IEC 60870-5-103 |
| Interfaces | Ethernet (RJ45), Fiber Optic, RS-485/RS-232 |
| Voltage Measurement | Phase and residual voltage inputs |
| Current Measurement | Phase current, residual current inputs |
| Optional Features | Arc fault protection, fault location, power quality monitoring |
| Operating Temperature | -25°C to +55°C |
| Power Supply | 24–250 VDC or 100–240 VAC |
| Protection Levels | IP54 (front), IP20 (rear) |
| Dimensions | Standard compact design |
Applications
- Protects radial, looped, and meshed distribution networks.
- Suitable for isolated, resistance-earthed, compensated, and solidly-earthed networks.
- Ideal for industrial power systems, including those with distributed generation.
- Ensures reliable operation in critical automation and utility applications.
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