Overview
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | ABB REF615 |
| Brand | ABB |
| Product Series | Relion 615 Series |
| Product Type | Feeder Protection and Control Relay |
| Operating Temp | -25 deg C to +55 deg C |
| Power Consumption | Not specified in provided data |
| Rated Frequency | 50 / 60 Hz |
| Auxiliary Power Supply | 100-240 VAC / 24-250 VDC (configuration dependent) |
| Analog Inputs | Up to 14 analog inputs for CT, VT, or sensor signal measurement |
| Binary Inputs / Outputs | Up to 16 binary inputs and 18 binary outputs |
| Protection Functions | Overcurrent, earth fault, thermal overload, voltage, frequency, breaker failure, arc flash protection |
| Communication Protocols | IEC 61850 Edition 1 and Edition 2, Modbus RTU/TCP, DNP3, IEC 60870-5-103 |
| Redundancy Protocols | HSR, PRP, RSTP |
| Communication Interfaces | RJ45 Ethernet, fiber optic LC, RS-485 / RS-232 options |
| Display Interface | Graphical LCD with single-line diagram, pushbuttons, and LED indicators |
| Mounting Type | Flush mount, panel mount, 19 inch rack mount, withdrawable design |
| Protection Class | IP54 front panel |
| Standards Compliance | IEC 60255, IEEE, ANSI C37.90 |
IEC 61850 Communication and Feeder Protection Functions
The ABB REF615 processes feeder measurement signals and executes protection logic through its embedded relay processing unit. It supports IEC 61850 communication for station-level data exchange and GOOSE messaging between intelligent electronic devices.
In addition, the relay handles directional and non-directional overcurrent protection, earth fault detection, voltage supervision, frequency protection, thermal overload monitoring, and breaker failure protection. The integrated disturbance recorder and sequence of events logging functions capture electrical behavior for fault analysis.
The REF615 also supports deterministic Ethernet communication through industrial substation network architectures. Therefore, engineering teams can integrate the relay with digital substation systems using standard communication interfaces and configured protection schemes.
Frequently Asked Questions
Q: Does the ABB REF615 support IEC 61850 GOOSE communication?
A: Yes. The REF615 supports IEC 61850 communication and GOOSE messaging for fast horizontal communication between protection and control devices.
Q: What type of signals can the REF615 measure?
A: The relay accepts current transformer, voltage transformer, and sensor-based measurement inputs through configured analog input channels.
Q: Does the REF615 provide withdrawable hardware construction?
A: Yes. The relay uses a withdrawable unit design that allows physical removal for testing and maintenance while maintaining the panel installation structure.
Field Installation Guidelines
- Install the relay in a protected panel environment with correct mechanical support and grounding connection.
- Connect CT and VT secondary circuits according to the configured protection scheme and verify polarity before commissioning.
- Use shielded communication cables for serial interfaces and connect cable shields according to substation grounding practices.
- Separate power wiring, measurement circuits, and communication cables to reduce electromagnetic interference.
- Verify Ethernet network configuration, IEC 61850 settings, and protection parameters before energizing the feeder circuit.
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