Reliable Digital Protection for Modern Power Distribution
The ABB REF615E Feeder Protection and Control Relay is a versatile intelligent electronic device (IED) designed for protection, control, and monitoring of medium-voltage feeder systems. As part of ABB’s Relion® 615 series, it brings together essential protection functions and communication capabilities in a compact, modular platform.
Engineered for utility and industrial power networks, the REF615E helps ensure stable energy distribution, fast fault response, and improved system visibility in both traditional and digitally connected substations.
Technical Specifications
| Item | Description |
|---|
| Model | REF615E |
| Product Type | Feeder Protection & Control Relay |
| Series | ABB Relion® 615 |
| Protection Functions | Overcurrent, short-circuit, earth fault, thermal overload |
| Control Functions | Circuit breaker control, feeder supervision |
| Measurement Functions | Electrical quantities monitoring |
| Communication | IEC 61850, Modbus, DNP3 |
| Interface | Graphical LCD display |
| Engineering Tool | PCM600 software |
| Mounting | Panel / modular withdrawable design |
| Installation | Plug-in modular structure |
Application Scope
The REF615E is widely applied in medium-voltage power distribution environments, including:
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Utility substations for feeder protection
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Industrial electrical distribution systems
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Radial and loop network configurations
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Renewable energy integration systems
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Substation automation and monitoring systems
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Critical infrastructure requiring stable power delivery
Its flexible architecture makes it suitable for both new installations and system upgrades.
Key Advantages
The REF615E offers a strong balance of protection reliability, system flexibility, and operational efficiency. It provides fast and selective fault detection, helping reduce system interruptions and improving overall network stability.
Its modular plug-in structure simplifies installation and maintenance, while built-in communication capabilities allow seamless integration into modern automation and SCADA systems. The device also enhances operational visibility through real-time monitoring and system diagnostics.
Technical FAQs
1. What is the main function of REF615E?
It provides protection and control for medium-voltage feeder systems.
2. Where is it commonly used?
In utility substations and industrial power distribution networks.
3. What protection functions are included?
Overcurrent, earth fault, short-circuit, and thermal protection.
4. Does it support communication systems?
Yes, it supports IEC 61850, Modbus, and DNP3.
5. Can it be used in smart grid systems?
Yes, it is compatible with modern digital substations.
6. Is it suitable for industrial environments?
Yes, it is designed for industrial-grade applications.
7. Does it support breaker control?
Yes, integrated circuit breaker control is included.
8. What type of feeders does it support?
Radial, looped, and meshed feeder systems.
9. Is maintenance difficult?
No, the modular design simplifies servicing.
10. What series does it belong to?
It is part of ABB’s Relion 615 feeder protection platform.
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