Description
Product Overview
ABB 1MRK002122-ABR00 is an Optical Short Range Line Data Communication Module (LDCM-SR) developed for ABB Relion® protection and control systems. It is a dedicated optical communication interface designed to provide fast, reliable, and electrically isolated data exchange between intelligent electronic devices (IEDs) used in power system protection applications. As a member of ABB’s Line Differential Communication Module family, 1MRK002122-ABR00 is mainly applied in line differential protection schemes where accurate and low-latency communication between protection terminals is essential.
ABB 1MRK002122-ABR00 provides an optical short-range communication channel using 820 nm optical technology, enabling protection relays to exchange high-speed differential protection information without being affected by electromagnetic interference from high-voltage equipment. The module is designed for ABB protection platforms such as REL670, RED670, RET670, and other Relion® 670 series devices, supporting secure communication between local and remote protection functions.
ABB 1MRK002122-ABR00 plays a key role in modern substation automation systems by improving protection response speed, increasing communication reliability, and simplifying system engineering. By using optical transmission instead of traditional copper-based communication, 1MRK002122-ABR00 helps power utilities and industrial users achieve higher availability, improved fault clearing performance, and enhanced operational safety in critical electrical networks.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Model | 1MRK002122-ABR00 |
| Manufacturer | ABB |
| Product Type | Optical Short Range Line Data Communication Module (LDCM-SR) |
| Product Family | ABB Relion® Protection and Control Systems |
| Main Application | Line differential protection communication |
| Communication Medium | Optical fiber / optical short-range communication |
| Optical Wavelength | 820 nm |
| Communication Distance | Short-range optical communication (application dependent) |
| Data Rate | Up to 2.048 Mbps (configuration dependent) |
| Communication Interface | Optical transmitter/receiver interface |
| Compatible Devices | ABB REL670, RED670, RET670 and related IED platforms |
| Installation Method | Internal relay module mounting |
| Power Supply | Supplied by host ABB protection device |
| Operating Temperature | Approx. -25°C to +70°C |
| Protection Class | IP20 (internal installation) |
| Communication Function | Protection data exchange and remote-end communication |
| EMC Performance | High immunity to electromagnetic interference |
1MRK002311-AAR02
Main Features and Advantages
ABB 1MRK002122-ABR00 is designed for protection applications where communication speed and reliability directly affect power system safety. Unlike general industrial communication interfaces, 1MRK002122-ABR00 is optimized for protection-grade data exchange, providing deterministic communication performance required for line differential protection functions.
The primary advantage of ABB 1MRK002122-ABR00 is its optical communication capability. Fiber-optic transmission provides complete electrical isolation between connected protection devices and eliminates many problems associated with copper communication systems, including electromagnetic interference, ground potential differences, and switching surge effects. This allows 1MRK002122-ABR00 to operate reliably in high-voltage substations and industrial power environments.
ABB 1MRK002122-ABR00 supports fast transmission of protection-related information between relay terminals. In line differential protection applications, protection devices installed at different ends of a transmission line must exchange synchronized measurement data continuously. The stable communication performance of 1MRK002122-ABR00 helps ensure accurate fault identification and rapid selective tripping.
The compact modular structure of 1MRK002122-ABR00 allows easy integration into ABB protection devices. Engineers can install the module within existing relay configurations without major modifications to control cabinets or protection panels. This modular design reduces engineering complexity and improves system maintainability.
ABB 1MRK002122-ABR00 also provides excellent reliability in harsh electrical environments. Power substations experience electrical noise, switching operations, temperature variations, and vibration. The optical design of the module ensures stable operation even under these challenging conditions.
Another important benefit of ABB 1MRK002122-ABR00 is its compatibility with ABB Relion® protection platforms. The module can be configured together with ABB engineering tools and protection devices, helping simplify commissioning, testing, and lifecycle management.
For retrofit and modernization projects, 1MRK002122-ABR00 provides an effective solution for restoring or expanding communication functions in existing ABB protection systems. It allows users to maintain proven protection architectures while improving communication reliability.
With high-speed optical communication, strong interference resistance, modular integration, and ABB protection platform compatibility, 1MRK002122-ABR00 is a dependable communication component for critical electrical protection applications.
Applications
ABB 1MRK002122-ABR00 is mainly used in electrical protection systems requiring secure and fast communication between protection relays. Its primary application is in line differential protection systems where multiple protection devices must exchange measurement information in real time.
In transmission substations, ABB 1MRK002122-ABR00 provides communication between protection terminals located at different points of a protected power line. The module supports reliable exchange of differential protection data, helping protection relays quickly identify internal faults and isolate affected sections.
Power generation facilities use 1MRK002122-ABR00 in generator and transmission protection systems where communication reliability is essential for maintaining stable operation. The module supports high-speed protection coordination between intelligent electronic devices.
Industrial power networks, including petrochemical plants, mining facilities, steel plants, and large manufacturing sites, can use ABB 1MRK002122-ABR00 to improve protection communication reliability inside electrical distribution systems.
ABB 1MRK002122-ABR00 is also suitable for substation upgrade and replacement projects. Existing ABB protection systems can be maintained and expanded by installing compatible communication modules without replacing complete relay platforms.
Typical application areas include:
- High-voltage transmission substations
- Medium-voltage protection systems
- ABB Relion® 670 series applications
- Line differential protection
- Generator protection systems
- Industrial electrical networks
- Switchgear automation systems
- Power grid modernization projects
- Substation communication systems
Related Products
ABB 1MRK002122-ABR01 — Related LDCM communication module variant with different ordering configuration.
ABB 1MRK002122-ABR03 — Optical Short Range Line Data Communication Module variant with similar communication function.
ABB 1MRK002122-ABR05 — Later configuration variant of the LDCM-SR module family.
ABB 1MRK002311-AAR02 — Optical Long Range Line Data Communication Module for extended-distance protection communication.
ABB 1MRK002311-AA — Optical Medium Range LDCM module using 1310 nm optical communication.
ABB RED670 — Line differential protection relay platform commonly configured with LDCM modules.
ABB REL670 — Line distance protection relay supporting optical communication modules.
ABB RET670 — Transformer protection relay platform supporting ABB communication accessories.
ABB PCM600 — ABB protection engineering software used for configuration and commissioning.
