The ABB 1MRK002122-ABR00 is a highly sophisticated numerical Feeder Protection and Control Relay, specifically the REF615 model, from ABB’s industry-leading Relion® 615 series. Engineered for medium-voltage distribution networks (typically up to 40.5 kV), this device delivers comprehensive protection, automation, measurement, and monitoring for feeder circuits, overhead lines, and cable systems. It integrates a complete suite of protection functions, including overcurrent (definite and inverse time), directional and non-directional earth-fault, thermal overload protection for cables, and sensitive directional earth-fault protection crucial for systems with isolated or compensated neutrals. More than a protector, the ABB 1MRK002122-ABR00 functions as an advanced automation platform, featuring configurable logic (CFC – Continuous Function Chart) that allows engineers to implement complex interlocking, load management, and custom control sequences without the need for external hardware.
As a core intelligent electronic device (IED) in modern substation automation, the ABB REF615 enhances grid reliability and operational intelligence. It provides high-accuracy measurement of all critical electrical parameters—current, voltage, power, energy, and power factor—while supporting a wide array of communication protocols, including IEC 61850 (GOOSE and MMS), IEC 60870-5-103, and Modbus. The suffix “-ABR00” denotes a specific standard hardware configuration, typically including a foundational set of I/O points, essential communication interfaces, and standard power supply options. For utility operators, industrial plant managers, and critical infrastructure stakeholders, the ABB 1MRK002122-ABR00 ensures selective and rapid fault clearance, minimizes outage duration, and delivers invaluable operational data for condition-based maintenance and energy efficiency initiatives.
Technical Specifications
Parameter Name
Parameter Value
Product Model
ABB 1MRK002122-ABR00 (Relion® REF615)
Manufacturer
ABB
Product Family/Series
Relion® 615 Series
Product Type
Feeder Protection and Control Relay (IED)
Rated Current Input
1 A or 5 A secondary from Current Transformers (CTs) (configuration specific)
Voltage Input
Supports 3-phase voltage measurement via Voltage Transformers (VTs)
Programmable logic (CFC), standard binary inputs and relay outputs (e.g., 8 DI, 6 DO)
Measurement & Metering
Currents, voltages, active/reactive power, power factor, frequency, energy (kWh, kVARh) with Class 0.5/1.0 accuracy
Communication Ports
Typically includes: 2 x Ethernet (IEC 61850, Modbus TCP), 2 x RS485 (Modbus RTU, IEC 60870-5-103), 1 x USB (service)
Disturbance Recorder
Integrated fault and event recorder with waveform capture
HMI
Graphical LCD with keypad
Power Supply
Standard range (e.g., 24-60 V DC or 110-230 V AC/DC, as per -ABR00spec)
Operating Temperature
-40°C to +70°C
Certifications
IEC 60255, IEC 61850, UL 508, CE
Key Features and Advantages
The ABB REF615 1MRK002122-ABR00 excels through its integrated multifunctionality and superior protection selectivity. It consolidates essential feeder protection functions into a single, compact unit, significantly reducing panel space, wiring complexity, and commissioning time compared to using multiple discrete relays. Its advanced sensitive directional earth-fault protection is particularly critical for detecting low-magnitude ground faults in networks with non-effectively grounded neutrals, enabling precise fault location and isolation. The relay’s thermal overload protection utilizes a detailed cable thermal model, safeguarding cable assets by preventing damage based on actual load current and thermal history.
1MRK002133-ABr02
Advanced automation and seamless communication are core to its value proposition. The built-in CFC (Continuous Function Chart) logic allows for the creation of custom, application-specific control schemes directly within the relay, effectively replacing external PLCs for functions like interlocking, automatic transfer, and load shedding. Native support for IEC 61850, including GOOSE for fast peer-to-peer messaging, makes the ABB 1MRK002122-ABR00 a fundamental building block for digital substations, enabling efficient engineering, interoperability, and a significant reduction in copper wiring. Its flexible mix of Ethernet and serial communication ports ensures compatibility with both modern and legacy system architectures.
Comprehensive diagnostics and ease of use provide significant operational benefits. The device acts as a high-accuracy power quality and energy meter, offering valuable insights for operational optimization. The powerful disturbance recorder with time-synchronized waveforms and event logs is indispensable for rapid post-fault analysis and root-cause determination. The intuitive local graphical HMI, combined with the powerful PCM600 engineering software, simplifies configuration, setting management, and routine maintenance. For asset managers, the ABB REF615 transforms from a simple protection device into an intelligent grid asset that enhances system reliability, provides actionable data, and supports a proactive maintenance strategy.
Application Areas
The ABB 1MRK002122-ABR00 (REF615) is specifically designed for the protection, control, and monitoring of medium-voltage (MV) feeder circuits across a diverse range of sectors.
In utility distribution networks, it is widely deployed in primary and secondary substations to protect overhead lines and underground cable feeders. Its auto-reclosing functionality is key to quickly restoring service after transient faults, directly improving system reliability metrics. Within industrial facilities (chemical plants, mining, manufacturing), it protects incoming utility feeders, main transformers, and critical distribution feeders to process areas, ensuring selective coordination to minimize production downtime during electrical disturbances.
For renewable energy installations such as solar PV plants and wind farms, it safeguards the collector feeders that aggregate power from multiple generation units and the point of interconnection to the main grid. In critical infrastructure like data centers, airports, and hospitals, it provides reliable protection for medium-voltage switchgear, ensuring high power availability. The relay is also extensively used in water and wastewater treatment plants for protecting pump station feeders. Essentially, the ABB REF615 is the solution of choice for any application requiring reliable, selective, and intelligent protection for three-phase AC feeders in the medium-voltage range.
Related Products
ABB RET615: The transformer protection relay from the same Relion® 615 series, commonly used alongside the REF615 for complete substation protection schemes.
ABB REB615: The busbar protection relay within the 615 family.
ABB PCM600: The universal configuration, monitoring, and analysis software for the entire Relion® protection relay family.
ABB Current Transformers (CTs) & Voltage Transformers (VTs): The external sensors required to provide scaled measurement signals to the relay.
ABB IEC 61850 System Configuration Tool (SCT): Software for engineering the complete system configuration and communication for IEC 61850-based substations.
ABB Relion® 670 Series: A more advanced platform for high-voltage bay and feeder protection, offering enhanced performance and features.
Industrial Ethernet Switches: For building the station bus network in IEC 61850 substations to which the REF615 connects.
Time Synchronization Clocks (GPS, IRIG-B): To provide precise time stamps for the relay’s disturbance recorder and for system-wide event sequencing.
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