ABB Relay Protection Device

ABB relay protection devices, particularly the Relion series, provide advanced protection, control, measurement, and supervision for power distribution systems, ensuring safe and reliable electricity flow.

Overview

ABB's Relion family of protection and control relays is designed for primary and secondary power distribution, supporting both IEC and ANSI applications. These relays monitor electrical networks, detect abnormal conditions, and autonomously make protection decisions to prevent equipment damage and maintain system stability . ABB relays are widely deployed globally, supervising electricity distribution networks in over 100 countries .

Key Products

• REX615: An all-in-one protection and control relay for power generation and distribution, offering modular and scalable hardware and software for flexibility and cost-efficiency throughout its lifecycle .
• REX640: A powerful, freely configurable relay for primary distribution, available in narrow and standard case widths with identical software options, allowing high customization and adaptation to changing protection requirements .
• 615 Series: Provides ANSI-compliant protection functions, configurable logic blocks, and IEC 61850 communication capabilities, suitable for integration in new, retrofit, or upgrade projects .

Functionality

ABB relays combine protection, control, metering, and supervision in a single device. They typically interface with current transformers (CTs) to monitor line currents and can coordinate with multiple relays for complex protection schemes . Key functions include:

• Overcurrent, undervoltage, and differential protection
• Circuit breaker control and trip supervision
• Event recording and fault analysis
• Modular logic for automation and interlocking

Configuration and Communication

ABB provides PCM600, a user-friendly engineering tool for configuring Relion relays. PCM600 supports:

• I/O and signal mapping
• IEC 61850-based communication for bay-to-bay and station-wide control
• Seamless integration with Intelligent Electronic Devices (IEDs)
• Cybersecurity features to ensure secure connectivity

Applications

ABB relay protection devices are used in:

• Primary and secondary distribution networks
• Industrial and utility substations
• Integration with renewable energy sources
• Automation of switchgear and protection schemes These devices help maintain grid stability, prevent blackouts, and support environmentally sustainable energy management .

Standards and Compliance

ABB relays comply with international standards such as IEC 61850, EN 60255, and ANSI protection standards. They are designed for robust performance in harsh environments and provide cybersecurity and communication reliability for modern power systems . In summary, ABB relay protection devices, particularly the Relion series, offer a comprehensive, modular, and flexible solution for monitoring, protecting, and controlling electrical distribution networks, ensuring safety, reliability, and adaptability to evolving energy demands.