Description
Key Technical Specifications
- Power Supply: 24-250 V DC / 48-240 V AC
- Communication Protocols: IEC 61850 MMS/GOOSE, line differential fiber or pilot wire
- Protection Functions: Stabilized/instantaneous line differential, breaker failure, directional overcurrent, autoreclosing
- Measurement: Three-phase currents, residual current/voltage, sequence components
- I/O Capacity: Modular TRM, IOM, BIM depending on configuration
- Operating Temperature: -25 to +70 °C
- Mounting: 19″ rack, 6U height (1/2, 3/4 or full rack options)
- HMI: Graphical local display with control pushbuttons
- Differential Communication: Fiber-optic or galvanic pilot wire
- Standards: IEC 61850, IEC 60255
- Application: Overhead lines, cables, single or multi-breaker schemes
- Firmware: Verify specific revision via PCM600
Product Introduction
Engineers managing transmission line protection need IEDs that deliver speed and selectivity across varying breaker arrangements. The ABB RED670 1MRK004810-CB operates as a line differential protection IED in the Relion 670 series, focused on reliable two-end unit protection.
This variant supports multi-breaker applications with integrated backup functions. It reduces coordination challenges on long lines or cables while maintaining fast fault clearance when paired communication links stay active.
Key Selling Points & Differentiators
- End-to-end differential trip times typically under 25 ms with healthy fiber links, combined with multi-breaker logic in a single chassis.
- Full QC process covers incoming serial and visual checks, 670 simulator rack testing with differential loopback, I/O forcing, and 24-hour burn-in; test report and photos available.
- Handles complex multi-breaker schemes better than RED615 units, especially where higher I/O density and advanced interlocking are required.
- Not recommended for basic radial distribution feeders where compact 615 series relays provide sufficient functionality at lower cost.
- Designed per IEC 61850 for seamless station bus integration; confirm edition and interface details with the remote-end unit.
