The REC670 provides advanced automation and control functions designed for modern transmission and distribution substations. In addition to integrated protection and bay control, the IED offers flexible automatic reclosing, breaker failure protection, disturbance analysis, high-speed communication, process bus support, and programmable logic for complex switching applications.

Flexible Automatic Reclosing

The REC670 supports single-phase, two-phase, and three-phase automatic reclosing, making it suitable for a wide variety of network configurations and fault conditions.

Key capabilities include:

Single-, two-, and three-phase reclosing
Priority logic for multi-breaker switchgear arrangements
High-speed or delayed reclosing operation
Coordination with the integrated synchrocheck function

By working together with the synchrocheck function, the auto-reclosing system ensures that circuit breakers are reclosed only when synchronization conditions are satisfied, improving system stability and operational reliability.

Independent Breaker Failure Protection

Several Circuit Breaker Failure (CBF) protection functions are available to provide dependable backup protection independently of the primary protection IEDs.

The breaker failure protection supports:

Individual circuit breakers
Multi-breaker applications
Complete breaker-and-a-half (1½ breaker) diameters

This independent backup protection helps ensure rapid fault clearance when a circuit breaker fails to operate as commanded.

Disturbance Recording and Fault Location

The REC670 includes integrated disturbance recording and fault location functions to support detailed post-fault analysis.

These diagnostic tools enable engineers to:

Record system disturbances with high-resolution event data
Analyze protection system performance after faults
Determine fault locations for faster maintenance and restoration
Investigate system events independently, even if the primary protection system experiences a failure
High-Speed Inter-IED Communication

The REC670 supports duplex communication channels through the LDCM (Line Data Communication Module).

Each remote-end communication card can exchange up to:

192 intertrip signals
192 binary input/output signals

Typical applications include:

High-speed communication between ABB 670 Series IEDs within the same substation
Remote I/O communication between substations
Interlocking and intertripping schemes
Distributed automation and control systems
IEC 61850-9-2LE Process Bus Support

For digital substations, the REC670 supports IEC 61850-9-2LE Process Bus technology.

The device can communicate with up to six Merging Units (MUs), allowing sampled values from instrument transformers to be transmitted digitally instead of through conventional copper wiring.

Benefits include:

Reduced secondary wiring
Simplified substation installation
Improved system flexibility
Enhanced digital substation architecture
Advanced Programmable Logic

The REC670 incorporates powerful programmable logic that is configured using a graphical engineering tool, allowing users to implement complex automation schemes without extensive programming.

Typical logic applications include:

Automatic disconnector opening in multi-breaker switchgear arrangements
Breaker ring closing sequences
Automatic load transfer
Custom interlocking logic
User-defined station automation functions

The graphical configuration environment simplifies:

Engineering
Functional testing
Commissioning
Future system modifications
Preconfigured Application Packages

To simplify engineering and reduce commissioning time, the REC670 is available with several predefined application packages optimized for common substation layouts:

Package Typical Application
A30 Single-breaker arrangement with single or double busbar
A31 Bus coupler for double-busbar substations
B30 Double-breaker arrangement
C30 Complete breaker-and-a-half (1½ breaker) diameter

Each package includes application-specific control logic, interlocking functions, and apparatus management tailored to the corresponding switchgear configuration.

Flexible Engineering with PCM600

Optional functions can be configured using the PCM600 Application Configuration Tool, allowing users to customize the REC670 to meet specific application requirements.

Key engineering advantages include:

User-selectable optional functions
Configurable analog and binary I/O interfaces without major configuration changes
Predefined analog measurement and control circuits
Simple integration of additional application-specific signals
Reduced engineering effort through standardized function libraries

The primary differences among the available application packages are the implemented interlocking logic and the number of controllable switching devices, enabling the REC670 to accommodate a broad range of substation automation requirements while maintaining a consistent engineering approach.

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