The REC670 is a comprehensive bay control, protection, and monitoring Intelligent Electronic Device (IED) designed for a wide range of power system applications. It provides integrated control, protection, automation, and monitoring for substations across all voltage levels, making it suitable for both transmission and distribution networks.

The REC670 is particularly well suited for IEC 61850 digital substations, where its advanced communication capabilities enable reliable distributed bay control, station automation, and seamless integration with modern SCADA systems.

IEC 61850-Based Station Automation

The REC670 fully supports IEC 61850-8-1 Edition 1 and Edition 2 station communication, enabling efficient integration into modern substation automation systems.

Its communication capabilities include:

GOOSE messaging for high-speed peer-to-peer communication and station-wide interlocking
MMS (Manufacturing Message Specification) client-server communication for local station control and remote SCADA operation
Distributed control architecture with intelligent bay-level devices
High-speed data exchange for reliable substation automation

This architecture allows each bay to operate with a dedicated intelligent controller while maintaining coordinated operation throughout the entire substation.

High-Availability Communication

To maximize system availability, the REC670 incorporates Parallel Redundancy Protocol (PRP) communication. Built-in PRP support enables seamless network redundancy without communication interruption in the event of a network failure.

The device supports both:

Star network architectures
Ring network architectures

This redundant communication capability significantly enhances the reliability of mission-critical protection and control systems.

Flexible Bay Control

The REC670 is suitable for controlling switching equipment in virtually any substation configuration and at any voltage level.

Typical controlled equipment includes:

Circuit breakers
Disconnectors
Earthing switches
Other primary switching apparatus

The device supports both single-bay and multi-bay applications, allowing one REC670 IED to control up to six bays within a substation, depending on the application.

Control operations can be performed through:

Remote SCADA or station control systems using IEC 61850-8-1 Edition 1 or Edition 2
The integrated multi-display Local Human-Machine Interface (HMI)
Secure Control Operation

The REC670 employs the Select-Before-Operate (SBO) control principle, providing a high level of operational security by ensuring that each switching device is positively selected before execution of a control command.

To further improve switching safety, the device includes integrated synchrocheck functions, which verify synchronization conditions before circuit breaker closing in both:

Synchronous power systems
Asynchronous power systems

These functions help ensure safe and reliable switching while minimizing disturbances to the electrical network.

Built-In Cyber Security

The REC670 incorporates advanced cybersecurity measures to maintain secure autonomous operation of its protection and control functions.

The device is designed to continue performing essential protection and control tasks even during simultaneous cyberattack scenarios, helping utilities improve the resilience of critical power infrastructure.

Flexible Protection Functions

The REC670 includes an extensive range of configurable protection functions that allow it to be adapted to various substation layouts, feeder types, and busbar configurations.

Available protection functions include:

Up to six instantaneous phase and earth overcurrent protection functions
Four-step directional or non-directional phase overcurrent protection
Four-step directional or non-directional earth overcurrent protection
Thermal overload protection
Frequency protection
Two instances of two-step undervoltage protection
Two instances of two-step overvoltage protection
Automatic reclosing (autorecloser)
Comprehensive measurement and monitoring functions

This broad protection portfolio enables the REC670 to provide dependable backup and primary protection for a wide range of substation applications.

Advanced Monitoring and HMI

The integrated multi-display Local HMI provides intuitive operation and monitoring of the protected bays.

Key HMI capabilities include:

Multiple configurable display pages
One or more dedicated pages for each feeder
Local control and status indication
Real-time measurements and alarm presentation
Simplified operation and maintenance

The combination of advanced protection, flexible control, IEC 61850 communication, redundant networking, cybersecurity, and a powerful local HMI makes the REC670 a versatile and reliable solution for modern digital substations requiring integrated bay automation, protection, and monitoring.

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