Description
Product Core Brief
- Model: RED670
- Brand: ABB / Hitachi Energy Relion 670 series
- Core Function: Line and cable differential protection IED for overhead lines, cable feeders, multi-terminal lines and transformer feeders.
- Product Type: Line Differential Protection IED
- Key Specs: Phase-segregated current differential protection | Up to 5 line terminals | Distance protection backup | Single- and three-phase tripping | IEC 61850 support | PCM600 engineering
- Condition: New Original / New Surplus
Product Introduction
The ABB RED670 is a line differential protection intelligent electronic device from the Relion 670 series, now supported under Hitachi Energy. It is designed for protection, monitoring and control of overhead lines and cables in distribution, transmission and extra-high-voltage networks.
RED670 provides phase-segregated current differential protection with high sensitivity for high-resistance faults and secure phase selection. It can protect single-breaker and multi-breaker arrangements, support single-pole, double-pole and three-pole tripping, and include transformer feeders or generator-transformer blocks in the protected zone. The device also offers distance protection, overcurrent protection, voltage and frequency protection, synchrocheck, auto-reclose, event recording and disturbance recording.
This IED is suitable for replacement, spare-parts stocking and system expansion in substations where Relion 670 series line protection is already deployed. Because RED670 order codes define application package, I/O configuration, communication options and firmware features, the full type code must be verified against the installed nameplate before procurement.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Product Name | RED670 Line Differential Protection IED |
| Brand | ABB / Hitachi Energy Relion 670 series |
| Product Type | Line and cable differential protection relay |
| Primary Protection | Phase-segregated current differential protection |
| Line Terminals | Up to 5 terminals supported in multi-terminal applications |
| Backup Protection | Distance protection, overcurrent, negative-sequence overcurrent, voltage and frequency protection |
| Tripping | Single-pole, two-pole and/or three-pole tripping; auto-reclose supported |
| Communication | IEC 61850; additional protocols depend on variant |
| Engineering Tool | ABB PCM600 |
| Typical Applications | HV/EHV overhead lines, cable circuits, multi-terminal lines, transformer feeders, generator-transformer blocks |
| Condition Available | New Original / New Surplus |
Note: Public sources confirm RED670 as a Relion 670 series line/cable differential protection IED with phase-segregated differential, distance protection and IEC 61850 communication. However, the exact auxiliary voltage, I/O count, communication ports, application package and firmware for a specific order code are not confirmed here. Always verify the installed nameplate, order code and engineering data before replacement.
Quality Control Process
Each RED670 unit is inspected for housing condition, front-panel HMI, terminal blocks, communication ports, fiber-optic interfaces, mounting points and nameplate data. Where test conditions allow, auxiliary power, LED indicators, HMI display and communication interfaces are checked to confirm basic readiness. The unit is packed with anti-static and shock-resistant protection to prevent damage to optical ports, terminals and display components during transit.
Replacement Pitfall Guide
❗ Confirm the full order code. RED670 units differ by application package, I/O configuration, communication options and firmware. The replacement must match the original order code.
❗ Verify the line application package. Check whether the original device is configured for single-breaker or multi-breaker arrangements, single-phase or three-phase tripping, and the number of protected line terminals.
❗ Check differential channel configuration. Fiber-optic communication mode, C37.94/G.703 interface type, channel redundancy and time synchronization must match the existing scheme.
❗ Review distance and backup protection settings. Distance zones, overcurrent stages, auto-reclose logic and synchrocheck parameters must be restored from the original engineering data.
❗ Back up configuration before removal. Export settings, signal mapping, communication parameters, event records and disturbance files from PCM600 or the existing IED. Photograph terminal wiring, switch positions and HMI status before replacement.
Compatibility Matrix & Benchmarks
| Original Model | Replacement / Related Model | Compatibility Level | Migration Notes |
|---|---|---|---|
| ABB | ABB RED670, same order code | Direct | Confirm application package, firmware and I/O configuration |
| ABB | Other ABB RED670 variants | Needs Adaptation | Verify line terminals, tripping scheme and communication options |
| ABB | ABB REC670 | Not Direct | REC670 is a bay control IED, not a line differential relay |
| ABB | ABB REB670 | Not Direct | REB670 is a busbar differential protection IED |
| ABB | ABB REL670 / RET670 / REG670 | Not Direct | Different Relion 670 series IEDs with different primary applications |
Benchmarks
- Platform: ABB / Hitachi Energy Relion 670 series.
- Typical use: main and backup protection for HV/EHV overhead lines, cable circuits and multi-terminal lines.
- Key advantage: phase-segregated line differential protection with high resistive-fault sensitivity, distance backup and IEC 61850 integration.
