ABB REF615 Protection Relay – Advanced Feeder Protection and Control Solution
The ABB REF615 is a compact and powerful feeder protection and control relay belonging to ABB’s Relion 615 series. It is specifically designed for the protection, control, measurement, and supervision of overhead lines and cable feeders in utility substations and industrial power distribution systems. As a member of the ABB protection relay family, the REF615 offers high performance in both main protection and backup protection applications.
This relay is suitable for radial, looped, and meshed distribution networks, including systems with distributed generation. Its withdrawable design and support for the IEC 61850 standard with GOOSE messaging make it a modern and flexible solution for today’s medium voltage networks.
Key Features of ABB REF615 Protection Relay
The ABB REF615 stands out with its compact size and advanced functionality. It comes with multiple pre-configured standard versions (from configuration A to J), allowing users to select the most suitable version according to their specific application requirements.
One of the major advantages of the REF615 is its withdrawable design. This feature significantly reduces maintenance time and allows quick replacement without extensive rewiring. The relay also includes a clear and user-friendly local human-machine interface (HMI), which simplifies operation and monitoring in the field.
The ABB REF615 supports a wide range of protection functions, including non-directional and directional overcurrent protection, earth fault protection, thermal overload protection, voltage protection, and frequency protection. It also offers advanced capabilities such as disturbance recording, event logging, condition monitoring, and arc flash protection. These features help improve both system reliability and personnel safety in medium voltage installations.
Protection and Control Capabilities
As a dedicated feeder protection relay, the ABB REF615 provides comprehensive protection for medium voltage feeders. It can detect and isolate faults quickly, minimizing damage to equipment and reducing outage times. The relay supports both main protection and backup protection schemes, making it suitable for critical applications where redundancy is required.
In addition to basic overcurrent and earth fault protection, the REF615 includes functions for load encroachment, broken conductor detection, and sensitive earth fault protection. These advanced features allow for more precise fault detection and better coordination with other protective devices in the network.
The relay also offers control functions for circuit breaker and disconnector operation, along with interlocking logic to ensure safe switching operations. This combination of protection and control in a single device helps reduce panel space and simplifies system design.
Communication and Configuration
The ABB REF615 fully supports the IEC 61850 communication standard, including GOOSE messaging for fast peer-to-peer communication between intelligent electronic devices (IEDs). It also supports other widely used protocols such as Modbus, DNP3, and IEC 60870-5-103, providing flexibility for integration into both new and existing substation automation systems.
Configuration and engineering of the relay are performed using ABB’s PCM600 software. This powerful tool allows engineers to easily set protection parameters, create logic, and manage relay settings across multiple devices. The software also supports testing and commissioning activities, helping reduce engineering time and potential errors.
ABB 615 Series – Complete Protection Portfolio
The ABB REF615 is part of the broader Relion 615 series, which offers dedicated protection relays for different applications:
- REF Series: Feeder protection (including REF615)
- RET Series: Transformer protection (RET615, RET620, RET630)
- REM Series: Motor protection (REM615, REM620, REM630)
- REG Series: Generator protection
- REB Series: Busbar protection
- REV Series: Capacitor and filter bank protection
- REU Series: Voltage protection and control
- REC Series: Remote monitoring and control
- REX640: Advanced substation automation and protection
This wide portfolio allows users to select the most appropriate relay for each application while maintaining a consistent engineering and communication platform across the substation.
ABB REF615 in Modern Power Systems
The ABB REF615 is widely used in utility distribution substations, industrial plants, renewable energy connections, and infrastructure projects. Its compact design, high functionality, and strong communication capabilities make it an excellent choice for both new installations and retrofit projects where space and performance are important considerations.
With its support for arc flash protection and advanced monitoring features, the REF615 also contributes to improved safety and reduced maintenance costs. The relay’s ability to operate reliably in various network configurations, including those with distributed generation, makes it well-suited for modern power systems.
Looking for ABB Protection Relay for your project?
Looking for high-performance ABB protection relay, ABB REF615, or complete solutions including ABB distance protection relay for feeder, transformer, motor, or generator protection? We provide expert technical support and genuine ABB products tailored to your medium voltage requirements.
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