ABB REB670 Numerical Busbar Protection Relay for Relion 670 Series Substation Automation
ABB REB670 Numerical Busbar Protection Relay for Relion 670 Series Substation Automation
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Brand:ABB PLC Item No.:ABB REB670 Product Origin:Sweden Product Dimensions:270 × 448 × 177 mm Product Weight:10 kg Payment:T/T, Western Union, Credit Card Goods_stock:15 Shipping Port:Xiamen, China Lead Time:1-3 Days Condition:Brand New And Original Warranty:1 Year Certificate:COO
The ABB REB670 Busbar Protection Relay is an advanced intelligent electronic device (IED) designed for high-speed and reliable protection of busbars in modern power transmission and distribution systems. As part of the Relion® 670 series, the REB670 integrates differential protection, monitoring, and control capabilities into a single platform, helping utilities maintain secure and stable substation operation.
The relay provides fast and selective fault detection for complex busbar configurations, including single, double, and transfer bus systems. With sophisticated algorithms and dynamic zone selection, the device can accurately identify internal faults while remaining stable during external disturbances such as CT saturation or system transients.
Designed for digital substations, the REB670 supports modern communication protocols such as IEC 61850 and integrates easily with SCADA, DCS, and grid automation platforms. Its modular architecture and extensive I/O capabilities allow utilities to deploy the relay in medium-voltage, high-voltage, and extra-high-voltage networks where system reliability and protection speed are critical.
Technical Specifications
Parameter
Specification
Product Model
REB670
Manufacturer
ABB
Product Type
Numerical Busbar Protection Relay
Series
Relion 670 Series
Protection Principle
Differential busbar protection (low or high impedance configuration)
Protection Zones
Up to 6 independent zones
Supported Busbar Configurations
Single busbar, double busbar, transfer bus, 1½ breaker scheme
Specifications may vary depending on hardware configuration and ordering code.
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Applications
The ABB REB670 relay is widely deployed in substation protection systems where fast fault isolation and reliable busbar protection are essential.
Typical applications include:
High-voltage and extra-high-voltage substations
Utility power transmission networks
Renewable energy grid interconnections
Industrial power distribution systems
Railway electrification substations
Smart grid and digital substation infrastructure
Its ability to protect complex busbar configurations makes it especially valuable in large substations with multiple feeders and breakers.
Advantages
Ultra-Fast Fault Detection
The REB670 can detect and isolate busbar faults in less than one power system cycle, minimizing equipment damage and power outages.
Advanced Differential Protection Algorithms
Sophisticated measurement principles ensure accurate detection while maintaining stability during external faults and CT saturation.
Flexible Busbar Configuration Support
Supports various busbar arrangements including single, double, and breaker-and-a-half schemes.
Seamless Digital Substation Integration
IEC 61850 communication allows high-speed peer-to-peer messaging and integration with modern automation systems.
Extensive Monitoring and Diagnostics
Built-in event recording, disturbance logs, and diagnostics help engineers analyze faults and improve system reliability.
Proven Field Reliability
ABB busbar protection systems have been deployed in thousands of substations worldwide, demonstrating long-term operational stability.
Technical FAQs
1. What is the main function of the ABB REB670 relay?
It provides differential protection for busbars, detecting internal faults and isolating them quickly to prevent equipment damage.
2. Which systems commonly use the REB670?
It is used in medium-, high-, and extra-high-voltage substations within power transmission and distribution networks.
3. What communication protocols are supported?
The relay supports IEC 61850, DNP3, Modbus, and IEC 60870-5-103 for integration with substation automation systems.
4. How fast does the relay operate?
Typical fault clearing time is less than one power cycle, enabling extremely fast protection.
5. Can the relay handle complex busbar arrangements?
Yes, it supports configurations such as double busbars, transfer buses, and 1½ breaker schemes.
6. Does the REB670 provide breaker failure protection?
Yes, breaker failure protection and end-fault protection can be integrated within the relay.
7. What industries use this relay?
Utilities, power generation plants, heavy industry, and large infrastructure projects.
8. Is the device suitable for digital substations?
Yes, it fully supports IEC 61850 communication and modern substation automation architectures.
9. What type of installation is required?
The relay is typically installed in a rack or panel within a substation protection cabinet.
10. Why choose ABB REB670 for busbar protection?
Because it offers high-speed protection, flexible system configuration, and proven reliability in critical power system applications.
