Description
Product Core Brief
- Model: REB670
- Brand: ABB
- Series: Relion 670 series — busbar protection IED
- Core Function: Selective, fast, and reliable busbar differential protection for single, double, and triple busbar arrangements.
- Product Type: Busbar protection relay / Intelligent Electronic Device
- Key Specs: Low-impedance differential protection | Up to 6 protection zones | IEC 61850 support | MV to EHV applications
- Condition: New Original / New Surplus, depending on stock
Product Introduction
ABB REB670 1MRK002820-AC is a busbar protection IED from the Relion 670 series. It provides selective and fast differential protection for busbars, T-connections, and meshed corners in medium- to extra-high-voltage substations.
The REB670 supports single, double, and triple busbar schemes, including configurations with transfer bus, double-circuit breaker, or one-and-half circuit breaker arrangements. It is designed for solidly earthed, low-impedance earthed, isolated, and high-impedance earthed power systems, and belongs to the Relion protection and control family that implements core IEC 61850 values.
Some surplus listings describe this order code as a data management or automation control module, but the REB670 product family is officially defined as a busbar protection IED. Always confirm the exact configuration against the device nameplate and order documentation.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Brand | ABB |
| Model | |
| Order Code | 1MRK002820-AC |
| Product Type | Busbar protection IED / relay |
| Typical Application | MV to EHV busbar, T-connection, and meshed corner protection |
| Protection Function | Low-impedance busbar differential protection |
| Busbar Arrangements | Single, double, triple busbar; transfer bus supported |
| Protection Zones | Up to 6 zones |
| Communication | IEC 61850-based substation communication |
| System Compatibility | Relion 670 series protection and control ecosystem |
| Condition | New Original / New Surplus |
Quality Control Process
- Order code verification: Confirm REB670 and 1MRK002820-AC match the original nameplate exactly.
- Visual inspection: Check front HMI, terminal blocks, communication ports, mounting hardware, and signs of overheating.
- Firmware and configuration check: Verify software version, protection settings, and zone configuration before commissioning.
- Secondary injection test: Perform differential and supervision function tests under controlled conditions.
- Communication test: Verify IEC 61850/SCADA integration, GOOSE/Sampled Values if applicable, and remote access.
- Packing: Anti-static protection, moisture barrier, rigid corner protection, and shock-absorbing outer carton.
Replacement Pitfall Guide
❗ Confirm the full order code. 1MRK002820-AC defines the hardware/configuration variant; other REB670 order codes may differ in I/O, firmware, or zone capacity.
❗ Do not treat it as a generic automation module. Some surplus descriptions call it a data management or control module, but REB670 is a busbar protection IED in the Relion 670 series.
❗ Verify CT/VT and zone mapping. Wrong CT ratios, zone definitions, or supervision settings can cause maloperation or blocked tripping.
❗ Check substation communication configuration. IEC 61850 SCL/ICD files, IP addressing, and GOOSE mappings must match the existing system.
❗ Avoid blind replacement. Busbar protection is critical infrastructure; replacement should follow OEM procedures and site testing requirements.
Keep these in mind and you’ll cut 90% of rework time.
Compatibility Matrix & Benchmarks
| Original Model | Replacement / Successor Model | Compatibility Level | Migration Notes |
|---|---|---|---|
| ABB REB670 1MRK002820-AC | ABB REB670 1MRK002820-AC | Direct | Match full order code, firmware, and configuration. |
| ABB REB670 1MRK002820-AC | ABB REB670 other order code | Needs Verification | Same family but different I/O, firmware, or zone configuration. |
| ABB REB670 1MRK002820-AC | ABB Relion 670-series IED | Needs Verification | Different protection function; not a direct busbar replacement. |
| ABB REB670 1MRK002820-AC | Other busbar protection relays | Needs Verification | Requires OEM/engineering review of CT wiring, zones, and communication. |
Benchmarks:
- Relion 670-series busbar protection IED for MV to EHV substations.
- Supports low-impedance differential protection, up to 6 zones, and IEC 61850-based communication.
