ABB Bailey REU610 Voltage Relay

Description

The REU610 is part of ABB's Relion® product family, specifically within the 610 series, designed for voltage protection, measurement, and monitoring in distribution systems. It is a multifunctional voltage relay that integrates various voltage protection functions to provide comprehensive protection against different types of voltage faults.

Key Features and Functions

• Voltage Protection: Includes overvoltage, undervoltage, and zero-sequence voltage protection functions. These can be flexibly configured according to system requirements.
• Measurement and Monitoring: Continuously monitors the relay's operation and provides accurate voltage measurements.
• Human-Machine Interface: Equipped with an LCD display for convenient and secure local setting adjustments, fault record retrieval, and other operations.
• Communication Functions: Supports serial communication for local and remote setting adjustments, event record retrieval, and more.
• Plug-In Design: Facilitates easy and safe insertion and removal of the relay, simplifying device testing and maintenance.
• Wide Application Range: Suitable for voltage protection of various equipment such as busbars, feeders, transformers, and motors.

Application

• Busbar Overvoltage and Undervoltage Protection: Protects distribution station busbars from voltage faults.
• Feeder and Transformer Overvoltage Protection: Ensures protection of feeders and transformers from voltage issues.
• Motor Undervoltage Protection: Safeguards motors from undervoltage conditions.
• Capacitor Bank Protection and Monitoring: Provides protection and monitoring for capacitor banks.
• Neutral Point Ungrounded Systems: Utilizes zero-sequence voltage measurement for protection against ground faults without selectivity.
• Substation Busbar Voltage Automatic Transfer Initialization: Disconnects small power devices from the common network during busbar voltage automatic transfer.