ABB REB500BU 1KHL160006R0001H Bay Unit for Busbar Protection

Description

The REB500BU is a critical component of ABB’s REB500 Distributed Busbar Protection System, designed to enhance the safety and reliability of high-voltage substations. Installed locally in each bay, the REB500BU collects current transformer (CT) signals, breaker positions, and isolator statuses, then processes them using advanced protection algorithms. This decentralized architecture allows for millisecond-level fault detection, ensuring rapid isolation of faulty sections while maintaining system stability. Moreover, the unit supports redundant communication, self-monitoring, and event logging, making it suitable for IEC 61850-based substation automation. Its compact design and robust performance make it ideal for utility substations, industrial switchyards, and renewable energy hubs, where fast and reliable busbar protection is essential.