ABB REG670 1MRK002800-AB Substation Automation

Product Overview

The ABB REG670 1MRK002800-AB 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 specialized 100% stator/rotor earth fault detection. 

Technical Specifications

• Model Number: REG670 1MRK002800-AB.

• 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 and 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.

• Power Supply: 24 VDC.

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 injection and 3rd harmonic measurement techniques to provide 100% protection for both the stator and rotor, ensuring safety even during low-speed operation or standstill.

• Sub-Synchronous Resonance (SSR) Protection: Protects long-shaft turbo generators from harmful mechanical oscillations caused by series-compensated transmission lines.

• High Analog Density: With up to 24 analog inputs, the REG670 can monitor every critical phase, neutral, and auxiliary signal in a large generator-transformer unit.

• Industrial Durability: Designed to operate in extreme temperatures (-40°C to +85°C), making it suitable for both indoor control rooms and remote power station enclosures.

• Global Compliance: Meets rigorous international standards including IEC 60255 and IEEE C37.2, ensuring reliability in utility grids worldwide.