The ABB 1MRK002122-ABR01 is a highly advanced, numerical Feeder Protection and Control Relay, specifically the REF615 model, from ABB’s industry-leading Relion® 615 series. This device is engineered to provide comprehensive protection, control, measurement, and monitoring for medium-voltage (typically up to 40.5 kV) feeder circuits, overhead lines, and cable feeders in distribution networks and industrial power systems. It integrates a complete suite of protection functions, including overcurrent (definite and inverse time), directional/non-directional earth-fault, thermal overload for cable protection, and sensitive directional earth-fault protection for systems with isolated or compensated neutrals. The ABB REF615 goes beyond basic protection, offering advanced automation capabilities through its configurable logic (CFC — Continuous Function Chart), allowing engineers to create custom control sequences, interlocking schemes, and load-shedding logic without additional hardware.
As a core component of modern substation automation, the ABB 1MRK002122-ABR01 serves as an intelligent electronic device (IED) that enhances grid reliability and operational efficiency. It provides high-accuracy measurement of all key electrical parameters (currents, voltages, power, energy, power factor) and supports extensive communication protocols such as IEC 61850 (GOOSE and MMS), IEC 60870-5-103, and Modbus, enabling seamless integration into SCADA systems and digital substation architectures. The suffix -ABR01specifies a particular hardware configuration, including I/O count, communication interface options (likely including Ethernet), and power supply voltage. For utilities, industries, and infrastructure operators, this relay ensures the selective and fast clearance of faults, minimizes outage times, and provides valuable data for condition-based maintenance and energy management.
Technical Specifications
Parameter Name
Parameter Value
Product Model
ABB 1MRK002122-ABR01 (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 CTs (Configuration specific to order code)
Voltage Input
Supports 3-phase voltage measurement via VTs for full functionality
Currents, voltages, active/reactive power, power factor, frequency, energy (kWh, kVARh) with Class 0.5/1.0 accuracy
Communication Ports
2 x Ethernet (IEC 61850-8-1, Modbus TCP), 2 x RS485 (Modbus RTU, IEC 60870-5-103), 1 x USB (service)
Disturbance Recorder
Extended fault recording with pre- and post-fault waveforms
HMI
Large graphical LCD with multilingual menu
Power Supply
24-48/60 V DC or 110-230 V AC/DC (specific to -ABR01variant)
Operating Temperature
-40°C to +70°C
Certifications
IEC 60255, IEC 61850, UL 508, CE
Key Features and Advantages
The ABB REF615 1MRK002122-ABR01 excels through its integrated multifunctionality and superior protection selectivity. It combines all essential feeder protection functions in one device, reducing panel space, wiring, and engineering time compared to using multiple standalone relays. Its advanced directional earth-fault protection is particularly valuable for networks with isolated or Petersen-coil grounded neutrals, enabling precise faulted feeder identification and selective tripping. The thermal overload protection uses a detailed cable thermal model to prevent damage based on actual load current and time, safeguarding cable assets.
1MRK002246-BD
Advanced automation and seamless communication are core to its design. The powerful CFC (Continuous Function Chart) logic allows the creation of complex, application-specific control schemes directly within the relay, replacing external PLCs or hardwired logic for functions like busbar transfer, interlocking, and load management. Native support for IEC 61850 (including GOOSE for fast peer-to-peer messaging) makes it a cornerstone of modern digital substations, enabling efficient engineering, interoperability, and reduced copper wiring. The dual Ethernet and serial ports provide flexible integration options for any network architecture.
Enhanced diagnostics and user-centric operation provide significant operational benefits. The relay acts as a high-class power quality analyzer and energy meter, offering detailed insights for efficiency improvements. The comprehensive disturbance recorder with time-synchronized waveforms and events is crucial for rapid post-fault analysis and root cause determination. The intuitive graphical local HMI and the powerful PCM600 engineering tool simplify configuration, setting, and maintenance. For asset managers, the ABB REF615 transforms a simple protection device into an intelligent grid asset that maximizes reliability, provides actionable data, and supports predictive maintenance strategies.
Application Areas
The ABB 1MRK002122-ABR01 (REF615) is the ideal solution for the protection, control, and monitoring of medium-voltage (MV) feeder circuits across diverse sectors.
In utility distribution networks, it is extensively used in primary and secondary substations to protect overhead lines and underground cable feeders. Its auto-reclosing function is vital for quickly restoring service after transient faults. Within industrial plants (chemical, mining, manufacturing), it protects incoming utility feeders, main plant transformers, and critical distribution feeders to process units, ensuring selective coordination to minimize production disruption during a fault.
For renewable energy installations like solar PV farms and wind parks, it protects the collector feeders that aggregate power from multiple inverters or turbines, and the connection point to the grid. In infrastructure projects such as data centers, airports, and hospitals, it secures medium-voltage ring main units (RMUs) and ensures high power availability. It is also deployed in water and wastewater treatment plants for protecting pump station feeders. Essentially, any application requiring reliable, selective, and intelligent protection for a 3-phase AC feeder up to 40.5 kV is a prime candidate for the REF615 relay.
Related Products
ABB RET615: The transformer protection relay from the same Relion® 615 series, often used in the same substation for transformer protection.
ABB REB615: The busbar protection relay in the 615 family.
ABB PCM600: The universal configuration and monitoring tool for all Relion® protection relays.
ABB CTs & VTs (Current & Voltage Transformers): The external sensing devices required to provide scaled current and voltage signals to the relay.
ABB IEC 61850 System Configuration Tool (SCT): Software for engineering the complete IEC 61850 system architecture involving multiple IEDs.
ABB Relion® 670 Series: A more advanced platform for high-voltage bay-level protection and control.
Communication Switches: Managed Ethernet switches for building the IEC 61850 station bus network to which the REF615 connects.
Time Synchronization Clock (GPS/IEEE 1588): To provide precise time stamps for disturbance records and system-wide event correlation.
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