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Overview
The Hitachi Energy REF610 is a member of the Relion® product family, providing essential protection for feeder applications. This numerical relay is engineered to offer dependable protection against various electrical faults, ensuring the safety and reliability of medium-voltage distribution networks.

Key Features & Benefits:

• Comprehensive Protection Functions: Includes definitive time and inverse time overcurrent protection (50/51), earth-fault protection (50N/51N), thermal overload protection (49), and motor load jam protection (48) for connected equipment.

• Flexible Communication Capabilities: Supports multiple communication protocols including IEC 61850, Modbus, DNP3, and IEC 60870-5-103, enabling seamless integration into various automation systems.

• User-Friendly Interface: Features a clear graphical display and intuitive navigation for easy configuration, operation, and troubleshooting.

• Measurement and Monitoring: Provides accurate measurement of electrical parameters (current, voltage, power, etc.) for real-time system monitoring.

• Compact Design: Space-saving design suitable for switchgear installation where panel space is limited.

Technical Specifications:

• Product Family: Relion® 610 Series

• Application: Feeder Protection

• Protection Functions: Overcurrent protection, Earth-fault protection, Thermal overload protection, Motor load jam protection

• Communication Protocols: IEC 61850, Modbus, DNP3, IEC 60870-5-103

• Display: Graphical LCD display

• Mounting: Suitable for switchgear panel mounting

Typical Applications:

• Protection of medium-voltage feeders in utility distribution networks

• Industrial plant distribution feeder protection

• Commercial building power system protection

• Renewable energy integration protection

Note: For complete technical specifications, installation guidelines, and setting instructions, please refer to the official Hitachi Energy REF610 documentation. Proper configuration requires expertise in power system protection.