ABB REG670 1MRK002826-AA BIG Generator Protection IED

Product Overview

The ABB REG670 1MRK002826-AA BIG is a high-performance Intelligent Electronic Device (IED) engineered for the comprehensive protection of power generators. It utilizes advanced microprocessor technology to deliver ultra-fast 15 ms differential protection and 100% stator/rotor earth fault coverage. 

Technical Specifications

• Model Number: REG670 1MRK002826-AA BIG.

• Product Series: Relion 670.

• Analog Inputs: Up to 24 (Current and Voltage).

• Differential Detection: 15 ms ultra-high speed.

• Earth Fault Protection: 100% Stator and Rotor protection (injection & 3rd harmonic).

• Specialized Protection: Sub-Synchronous Resonance (SSR) for turbo generators.

• Communication: IEC 61850 compliant.

• Operating Temperature: -40°C to +85°C.

• Dimensions: 300 x 280 x 100 mm.

• Weight: 4 kg.

• Certification: IEC 60255, IEEE C37.2, UL.

Key Features and Engineering Advantages

• Ultra-Fast Fault Clearing: The 15 ms differential detection time significantly reduces mechanical stress and electrical damage during internal generator faults.

• Full Winding Coverage: Employs advanced 3rd harmonic and injection techniques to provide 100% protection for both the stator and rotor, ensuring safety even during low-speed operation.

• Sub-Synchronous Resonance (SSR) Protection: Specifically designed for turbo generators to detect and mitigate harmful mechanical oscillations caused by series-compensated lines.

• High Analog Density: Supports up to 24 analog inputs, allowing the IED to act as a centralized node for every critical phase, neutral, and auxiliary signal in the generator-transformer unit.

• Digital Interoperability: Native IEC 61850 support enables high-speed GOOSE messaging and seamless data exchange with SCADA and digital substation architectures.

• Environmental Ruggedness: With an operating range of -40°C to +85°C, this unit is built for reliable performance in diverse climates and industrial environments.