Description
Key Technical Specifications
- Application: Overhead line and cable differential protection
- Voltage Supply: 48-250 V DC (typical 110/220 V DC)
- Frequency: 50/60 Hz
- Operating Temperature: -40 to +70°C
- Protection Functions: 87L current differential, distance backup, overcurrent, earth fault
- Communication Protocols: IEC 61850, Modbus, DNP3, fiber optic
- Current Inputs: 1/5 A CT configurable
- Mounting: 19-inch rack, standard 6U
- Firmware: Record exact version during QC (2.x series common)
- Condition: New Original (New Surplus), Factory Sealed
- Warranty: 12 months
- Availability: Contact for current stock and lead time
Product Introduction
Compare the ABB RED670 1MRK004810-AB to earlier hardware variants like the 002810 version. This configuration offers refined module layout and improved communication handling for multi-terminal line differential schemes in transmission systems.
Engineers working 220 kV and above lines often select this unit for its sub-cycle fault clearing. It maintains stability on external faults while providing sensitive internal fault detection. Typical operate time stays under 30 ms. Verify exact hardware and firmware compatibility with your existing bay before ordering.
Key Selling Points & Differentiators
- Delivers phase-segregated 87L protection with strong performance on high-resistance faults across up to five terminals.
- Undergoes full QC: incoming inspection, 24+ hour functional test on Relion 670 simulator rack, comms verification, and test report with photos available.
- Provides true differential protection unlike distance-only relays that can overreach during power swings on long lines.
- Not recommended for basic radial distribution feeders where a simpler REF or 650 series IED would handle the job at lower cost.
- Tested to IEC standards including insulation resistance >10 MΩ and functional checks per protection class requirements.
- Includes complete traceability verification and ESD-safe final packaging with QC sign-off label.
