ABB REB611 Busbar Protection Numerical Relay Module

Description

The ABB REB611 is a numerical busbar protection relay module designed for medium‑voltage substations, providing fast differential protection, reliable fault isolation, and seamless integration into modern protection schemes.

Specifications

• Model: ABB REB611
• Protection Type: Numerical busbar differential protection
• Application Voltage Level: Medium‑voltage distribution substations
• Current Inputs: 1 A / 5 A CT selectable
• Rated Frequency: 50/60 Hz
• Communication Protocols: IEC 61850, Modbus, DNP3 (configuration‑dependent)
• Binary Inputs/Outputs: Multiple programmable I/O channels
• Trip Time: High‑speed differential tripping for internal busbar faults
• Measurement Functions: Current, sequence components, fault detection
• Event & Disturbance Recording: Integrated recorder with time‑stamped logs
• Power Supply: 24–250 V AC/DC (model‑dependent)
• Mounting: Flush‑mounted relay case
• Operating Temperature: –40 °C to +55 °C
• Front Panel Protection: IP54
  

Features

• High‑Speed Busbar Protection: Provides rapid and selective tripping for internal busbar faults.
• Numerical Accuracy: Advanced algorithms ensure precise differential measurement and fault discrimination.
• IEC 61850 Support: Enables seamless integration into digital substations and SCADA systems.
• Flexible Configuration: Programmable I/O and scalable communication interfaces.
• Enhanced Diagnostics: Built‑in disturbance recorder and event logs improve maintenance efficiency.
• Robust Design: Wide temperature tolerance and industrial‑grade reliability for harsh environments.
• User‑Friendly Interface: Clear LCD display and intuitive configuration tools for easy setup.