ABB REF615EEHBFFAEAGNBA1BNA11G Feeder Protection and Control Relay

1. Product Overview

The ABB REF615EEHBFFAEAGNBA1BNA11G is a high-performance feeder protection and control relay designed for medium-voltage distribution networks and industrial power systems. It combines digital measurement and control technologies to provide overcurrent, short-circuit, ground fault protection, remote monitoring, and automatic reclosing, enhancing network reliability and operational efficiency.

2. Main Technical Specifications (Typical)

• Model: REF615EEHBFFAEAGNBA1BNA11G

• Product Type: Feeder Protection and Control Relay

• Rated Supply Voltage: AC/DC 110–220 V (depending on version)

• Relay Functions:

  • Overcurrent protection (50/51)

  • Instantaneous overcurrent protection (50/51N)

  • Ground fault protection (50G/51G)

  • Under/overvoltage protection

  • Overload protection

  • Automatic reclosing (configurable)

• Communication Interfaces: IEC 61850, Modbus RTU, DNP3 (depending on configuration)

• Digital Inputs/Outputs: Multiple DI/DO

• Analog Inputs/Outputs: Multiple AI/AO

• Mounting: 35 mm DIN rail or panel mount

• Ambient Temperature: -25 ℃ to +70 ℃

• Protection Class: IP30 (panel mounted)

3. Advantages and Features

• Multi-Function Feeder Protection
  Integrated overcurrent, ground, under/overvoltage, and automatic reclosing protection.

• Highly Digital and Communicative
  Supports IEC 61850, Modbus RTU, and other industrial communication protocols for remote monitoring and control.

• Programmable Logic Control
  Built-in logic functions allow custom control strategies and event interlocks.

• Fast Response and High Accuracy
  Advanced digital algorithms provide accurate current, voltage, and power measurements.

• Industrial-Grade Reliability
  High resistance to vibration and electrical interference, suitable for complex networks and industrial environments.

4. Applications

• Medium-voltage distribution feeder protection

• Industrial plants and large building power systems

• Transmission and distribution automation

• Substation feeder monitoring and control

• Renewable energy feeder protection (wind, solar)

• Critical power systems in water, power, and petrochemical industries

5. Precautions for Installation and Use

• Verify supply voltage matches relay ratings before installation

• Wiring must comply with ABB manuals and local electrical standards

• Ensure a dry and well-ventilated installation environment

• Configure automatic reclosing and protection settings according to network requirements

• Installation, commissioning, and maintenance should be performed by qualified personnel

• Periodically check relay status, communications, and measurement accuracy

The structure and details of the product：

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