Description
The ABB REB670, part number 1MRK002820-AC, is a Relion 670 Series intelligent electronic device (IED) designed primarily for fast and selective busbar differential protection. ABB identifies this exact product designation as REB670, Version 1.2, with the catalog description “Busbar protection.”
The relay is intended for medium- and high-voltage substations and industrial power systems. It can be applied to single-busbar, double-busbar, double-breaker, and one-and-a-half-breaker arrangements. Its protection architecture combines differential protection with configurable control, monitoring, and communication functions.
🔧 Protection Function
The REB670 provides selective differential protection for busbars, T-connections, and meshed corners. It is designed to identify internal faults quickly while maintaining stability during external faults.
Depending on the configured hardware and application package, the device can also support breaker-failure protection, current and voltage protection, frequency-related functions, breaker control, reclosing, measurement, and disturbance monitoring.
🏭 Typical Applications
• High-voltage and medium-voltage substations
• Utility transmission and distribution systems
• Industrial substations
• Power generation plants
• Oil and gas electrical systems
• Mining power networks
• Busbar protection systems
• Digital substation automation
📋 Product Datasheet
| Parameter | Specification |
|---|---|
| Manufacturer | ABB |
| Model | REB670 |
| Part Number | 1MRK002820-AC |
| Version | 1.2 |
| Product Type | Busbar Protection IED |
| Series | Relion 670 |
| Main Function | Busbar Differential Protection |
| Protection Areas | Up to 6 protected areas* |
| Communication | IEC 61850 / IEC 60870-5-103 / DNP 3.0 / LON / SPA* |
| Auxiliary Supply | 24–265 V AC/DC* |
| Installation | Protection & Control Panel |
| Configuration Software | ABB PCM600* |
| Measurement | Current / Voltage / Frequency* |
| Breaker Control | Application-dependent |
| Operating Temperature | Approx. -25°C to +55°C* |
| Storage Temperature | Approx. -40°C to +85°C* |
| Dimensions | Approx. 266 × 447 × 260 mm* |
| Weight | Approx. 4 kg* |
| Country of Origin | Sweden* |
| Application | Electrical Substation Protection |
*Exact I/O, communication interfaces, protection functions, dimensions, and supply configuration depend on the ordered hardware and application configuration. Published specifications for this exact designation identify universal 24–265 V AC/DC supply and multiple communication options.
🔌 Communication & Integration
The REB670 can be integrated into substation automation networks using supported communication protocols. IEC 61850 provides a modern Ethernet-based integration path, while other interfaces may be selected for legacy or mixed-system installations.
The relay can exchange protection, measurement, status, and control information with supervisory systems and other protection equipment. Configuration and engineering should be performed according to the installed hardware and approved protection scheme.
🛠️ Installation Notes
Before installation, verify the complete identification REB670 / 1MRK002820-AC, hardware configuration, auxiliary supply, CT/VT wiring, communication interface, and protection application.
CT circuits require particular attention during installation. Incorrect CT wiring, polarity, ratio settings, or phase assignment can affect differential protection performance.
After installation, verify relay self-diagnostics, binary inputs and outputs, measurement values, communication links, protection settings, and trip circuits before placing the equipment into service.
⚙️ Commissioning Checklist
• Verify relay model and version
• Confirm hardware configuration
• Check auxiliary supply
• Verify CT and VT connections
• Check CT polarity and phase sequence
• Configure protection settings
• Verify binary I/O
• Test communication
• Perform protection-function testing
• Verify trip and breaker-failure circuits
• Record final settings
⚠️ Compatibility Notice
The ABB REB670 1MRK002820-AC is a protection IED, not a conventional PLC or DCS controller. Replacement compatibility depends on the complete hardware configuration, firmware/application package, CT/VT arrangement, communication interfaces, and protection scheme.
For an existing substation replacement, match the original ordering code and hardware configuration as closely as possible and verify all protection settings before energizing the protected system.
📦 Product Identification
Brand: ABB
Model: REB670
Part Number: 1MRK002820-AC
Series: Relion 670
Product Type: Busbar Protection IED
Main Function: Differential Busbar Protection
Application: Substation Protection & Control
System: ABB Relion Protection Platform
