Overview

The ABB RER620 Advanced Recloser Protection Relay is a sophisticated protection and control device designed for utility distribution networks and industrial power systems. It delivers selective short-circuit and earth-fault protection for both overhead lines and cable feeders in distribution substations. The relay is compatible with both grounded and ungrounded systems, enhancing its versatility in various power grid configurations.

Integrating seamlessly with IEC 61850-based digital substations, the RER620 ensures future-proof communication and interoperability, which is crucial for modern grid automation. This relay is part of ABB’s Relion® 600 series, known for its reliability, flexibility, and scalability, making it an excellent choice for advanced feeder protection and control.

Technical Data

Typical Applications

• Utility Distribution Feeders: Protects and controls overhead lines and cable feeders in distribution networks.

• Industrial Power Systems: Provides reliable fault detection and automatic restoration for industrial power grids.

• Digital Substations: Seamless integration with IEC 61850 communication standards for modern grid operations.

• Ring Main Units (RMUs): Ideal for providing advanced recloser functionality in compact substations.

• Grid Automation Projects: Enhances system reliability and reduces downtime through automatic loop restoration.

FAQ

Q1: What is the ABB RER620 used for?
A1: It provides advanced recloser protection and control for medium-voltage feeders in both utility and industrial networks.

Q2: Does the RER620 support digital substation integration?
A2: Yes, it fully supports IEC 61850-based communication, making it highly compatible with modern grid automation systems.

Q3: What protection functions are included?
A3: The RER620 offers protection against overcurrent, earth-fault, negative sequence, breaker failure, and phase discontinuity.

Q4: What industries typically use the RER620 relay?
A4: It is widely used in power utilities, industrial plants, and distribution substations.

Q5: How does the RER620 improve reliability?
A5: It features automatic loop restoration, significantly reducing outage times and improving the reliability of feeders in distribution networks.