ABB REC670 | 1MRK004814-AC Bay Control IED

The ABB REC670 (Ordering Number: 1MRK004814-AC) is a high-performance Intelligent Electronic Device (IED) from the Relion® 670 series, specifically designed for the control, protection, and monitoring of switchgear bays in transmission and distribution networks. It is a highly configurable unit capable of managing complex substation arrangements, offering high reliability and flexibility for both new installations and system refurbishments.

Technical Specifications

Parameter	Detail
Product Model	REC670
Part/Ordering Number	1MRK004814-AC
Manufacturer	ABB (Hitachi Energy)
Product Type	Bay Control IED
Rated Voltage	110–550 kV (Configurable)
Communication Protocols	IEC 61850 (MMS/GOOSE), DNP3.0, Modbus TCP
I/O Capacity	24 Binary Inputs, 16 Output Relays, 8 Analog Inputs
Auxiliary Power Supply	48–250 VDC / 88–300 VAC
Dimensions (Approx.)	Standard rack-mount chassis
Weight	~5.5 kg – 8.0 kg (depending on configuration)
Country of Origin	Sweden

Key Features

Versatile Control: Capable of controlling up to 30 apparatuses (circuit breakers, disconnectors, etc.) in various switchgear arrangements, including single, double, and one-and-a-half breaker configurations.
Integrated Protection: Includes a wide range of protection functions such as overcurrent, voltage, frequency, thermal overload, and breaker failure protection.
Advanced Communication: Full support for IEC 61850, allowing for seamless integration into digital substation automation systems and smart grids.
Synchrocheck: Features synchrocheck and dead-line check functions to safely interlock circuit breaker operations.
Local HMI: Equipped with a graphical interface on the front panel for status monitoring, event viewing, and local control.
Self-Supervision: Extensive internal diagnostics and event recording for easier post-fault analysis and maintenance.

Application Fields

Transmission & Distribution: Primary control and monitoring for high-voltage substations.
Substation Automation: Acts as the central controller for bay-level automation within a Distributed Control System (DCS).
Industrial Power Systems: Reliable control for critical power infrastructure in industrial plants, steel mills, and refineries.
Renewable Energy Integration: Suitable for collector line control in wind and solar farms.

Usage Instructions

Mounting: Install the IED in a standard industrial control panel or cabinet. Ensure adequate clearance for airflow to maintain operating temperature limits (-40°C to +70°C).
Wiring: Connect analog current/voltage transformer signals and binary I/O signals using shielded cables to minimize electromagnetic interference.
Configuration: Use ABB’s dedicated engineering software tools (e.g., PCM600) to configure the control logic, interlocking schemes, and communication settings.
Commissioning: Perform a thorough test of the select-execute control principle before placing the bay into active service. Verify the synchrocheck settings match the network requirements.
Monitoring: Regularly monitor the IED via the station bus or the local HMI for any diagnostic alarms or fault events.

ABB REC670 1MRK004814-AC BAY CONTROL

Frequently Asked Questions (Q&A)

Q: Is the REC670 1MRK004814-AC suitable for 400 kV substations?
- A: Yes, it is designed to handle high-voltage applications up to 550 kV, making it suitable for 400 kV transmission networks.
Q: Can one REC670 unit control multiple bays?
- A: Yes, the IED’s outstanding I/O capability allows it to control several bays or all apparatuses in a complete diameter in a one-and-a-half breaker arrangement with a single unit.
Q: Does it support remote control?
- A: Yes, control is performed via the station communication bus (SCADA/Station) or locally through the graphical HMI.