ABB REF615E_G Feeder Protection and Control Relay

Product Overview

The ABB REF615E_G is a feeder protection and control relay from the ABB Relion® 615 series, designed for medium-voltage distribution systems. It provides comprehensive protection, control, measurement, monitoring, and communication functions for feeders and cables, supporting modern digital substations and distribution automation systems while improving safety and operational reliability.

Technical Specifications

• Model: REF615E_G

• Product Type: Feeder Protection and Control Relay

• System Voltage Level: Medium-voltage distribution networks (typ. 1…35 kV)

• Rated Frequency: 50 / 60 Hz

• Current Inputs:

  • 1 A / 5 A (configurable)

• Voltage Inputs:

  • Phase or line voltages (configuration dependent)

• Main Protection Functions:

  • Overcurrent protection (instantaneous and time-delayed)

  • Earth fault protection

  • Overload protection

  • Circuit breaker failure protection

  • Trip and logic protection functions

• Measurement Functions:

  • Current and voltage

  • Active and reactive power

  • Frequency and energy measurement

• Control Functions:

  • Circuit breaker and disconnector control

  • Local and remote operation

• Communication Interfaces:

  • Ethernet interface

  • IEC 61850, IEC 60870-5-103, Modbus (depending on configuration)

• Event and Disturbance Recording:

  • Sequence of events (SOE)

  • Disturbance recorder

• HMI:

  • Local display and push buttons

• Auxiliary Power Supply:

  • Wide-range DC / AC auxiliary supply (configuration dependent)

• Mounting:

  • Flush-mounted or rack-mounted

• Standards:

  • IEC 60255, IEC 61850 and related standards

Advantages and Features

1. Integrated Protection and Control
   Combines multiple protection, control, and measurement functions in one device.

2. High Reliability and Fast Fault Response
   Ensures rapid detection and isolation of faults to improve system safety.

3. Digital Substation Ready
   Native support for IEC 61850 enables seamless integration into modern substations.

4. Flexible Configuration
   Adaptable to various network topologies and operating conditions.

5. Advanced Monitoring and Diagnostics
   Built-in event and disturbance recording simplifies fault analysis and maintenance.

6. Proven ABB Industrial Quality
   Designed for continuous operation with high reliability and low maintenance requirements.

Typical Applications

• Medium-voltage feeder protection

• Industrial power distribution systems

• Utility distribution substations

• Substation automation systems

• Power, metallurgy, chemical, and infrastructure projects

Precautions

1. Installation and commissioning should be performed by qualified protection engineers.

2. Protection settings must be properly configured according to system parameters.

3. Communication settings should match the overall system design.

4. Ensure the auxiliary power supply matches the device specifications.

5. Perform regular functional and communication tests to ensure long-term reliable operation.

The structure and details of the product：

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