TheREC670 (1MRK000008-HB)is a high-performance Intelligent Electronic Device (IED) from the ABB Relion 670 series, specifically designed for the control and monitoring of bays in medium and high-voltage substations.
Technical Specifications
Manufacturer: ABB
Model/ID:REC670
Part Number:1MRK000008-HB
Product Series: Relion 670
Function: Bay Control and Monitoring
Control Capabilities: Up to 15 primary switching objects
I/O Capacity: Modular expansion supporting high-density binary and analog I/O
Display: Large Graphical Local Human Machine Interface (LHMI)
Operating Temperature: -25 °C to +55 °C
Enclosure Rating: IP54 (front)
Key Functional Characteristics
Integrated Bay Control and Interlocking
TheREC670 1MRK000008-HBserves as the "brain" of the bay, managing all interlocking logic to prevent unsafe switching operations. It provides a clear, graphical representation of the bay's single-line diagram on its local display, allowing for local manual control while simultaneously supporting remote operations via SCADA. Its logic is fully programmable, allowing it to adapt to complex station busbar configurations.
Synchrocheck and Energizing Check
To ensure system stability, theREC670includes advanced synchrocheck functions. It monitors the voltage, phase angle, and frequency on both sides of a circuit breaker, only permitting a closing command when the two systems are properly synchronized. This is a critical mechanical necessity for connecting generators to the grid or merging two independent network segments.
Digital Substation Integration
Natively supporting IEC 61850, the1MRK000008-HButilizes high-speed GOOSE messaging for horizontal communication between IEDs. This eliminates the need for extensive inter-bay hardwiring. With the support of PRP and HSR, the device ensures that control and status data are transmitted over redundant paths, maintaining station controllability even in the event of a network failure.
