Product Description

Overview

The RER620 is a specialized recloser protection and control relay, optimized for medium-voltage distribution feeders. Part of ABB’s Relion® 620 series, it is engineered for pole-mounted switchgear, outdoor enclosures, and smart grid applications. This relay provides comprehensive fault detection, automatic restoration, and remote control capabilities to enhance distribution network reliability.

Key Features

Advanced Recloser Management

• Configurable auto-reclosing sequences with up to 5 programmable shots for temporary fault clearing.

• Directional overcurrent and earth-fault protection for looped or meshed feeder networks.

• Fault location algorithms to quickly estimate fault positions and reduce field patrol time.

Smart Grid Integration

• Native IEC 61850 with GOOSE messaging for fast device-to-device communication.

• Supports distributed generation including wind, solar, and bidirectional power flow.

• Remote parameterization and event retrieval via web interface or ABB’s PCM600 tool.

Robust Communication Protocols

• DNP3 (TCP/Serial), Modbus, IEC 60870-5-101/104 for integration into legacy and modern systems.

• Seamless remote control and monitoring to minimize site visits to pole-mounted equipment.

Outdoor Reliability & Monitoring

• Designed for extreme temperatures, vibration, and harsh weather conditions.

• Monitors recloser health including spring charging, gas pressure (if applicable), and contact wear.

• Supports single- or three-phase tripping for optimized feeder performance.

Cybersecurity & Safety

• Role-based access control (RBAC), encrypted communication, and audit trails for secure operations.

• Drawout design allows safe withdrawal for maintenance or replacement without disconnecting field wiring.

Technical Specifications

Applications

• Protection and automation of overhead feeders, pole-mounted reclosers, and sectionalizers.

• Integration into smart grids with distributed generation and bidirectional flows.

• Loop and mesh network configurations for automated self-healing restoration.

• Remote monitoring and fault management for utility and industrial feeders.

FAQ

Q: Can the RER620 manage bidirectional power flows?
A: Yes, it includes support for distributed generation and ROCOF-based protection.

Q: How many reclosing shots can be programmed?
A: Up to five shots can be configured for automatic fault clearing.

Q: Does the RER620 support IEC 61850 communication?
A: Yes, including GOOSE messaging for fast peer-to-peer signaling.

Q: Is the relay suitable for outdoor pole-mounted environments?
A: Yes, it is engineered for extended temperature ranges and harsh weather conditions.