ABB RET650 1MRK008516-BA Feeder Protection

Product Overview

The ABB RET650 1MRK008516-BA is a flagship feeder protection relay from the Relion® 650 series. Engineered for medium and high-voltage distribution feeders (up to 66 kV), it serves as a multifunctional Intelligent Electronic Device (IED). It integrates advanced protection, precise measurement, and comprehensive control into a single, compact unit. 

Technical Specifications

• Model/Order Code: RET650 (1MRK008516-BA).

• Application: MV/HV Distribution Feeders (up to 66 kV).

• Protection Functions: Overcurrent (50/51), Earth Fault (50N/51N), Optional Arc Protection.

• Communication: IEC 61850 Ed. 1 & 2, DNP3, Modbus TCP/RTU, IEC 60870-5-103.

• Ethernet: Dual 10/100 Mbit/s (RJ45 or Fiber Optic LC).

• Binary I/O: Up to 16 opto-isolated inputs; 6–8 programmable relays.

• Auxiliary Power: 100–240 V AC/DC (Universal range).

• Operating Temp: -40°C to +70°C.

• Cyber Security: Role-based access, HTTPS, SSH, and IEEE 1686 compliance.

Key Features and Engineering Advantages

• Rapid Fault Isolation: High-speed processing logic ensures that faults are detected and cleared within milliseconds, protecting expensive downstream transformers and cables.

• Network Redundancy: The dual Ethernet interfaces allow for the implementation of high-availability network architectures, ensuring communication is never lost.

• Pre-Configured Reliability: The -BA variant refers to a specific pre-configured functional package, reducing the time required for engineering and site commissioning.

• Hardened Design: Rated for operation down to -40°C, making it suitable for outdoor kiosks and extreme climates where standard electronics often fail.

• Advanced Cyber Security: Built-in security features like SSH and role-based access control protect the IED from unauthorized configuration changes and cyber threats.