ABB 1MRK002246-BD Numeric Processing Module

The 1MRK002246‑BD is a hot‑swappable numeric processing core module for ABB Relion 670 series protection IEDs, compatible with RED670, REG670, REX640 series devices. It undertakes core protection algorithm operation, logic processing, event recording and data calculation tasks for the protection relay. The module acquires sampling data from CT/VT input boards, executes configured protection functions, and interacts with I/O boards and communication modules. It adopts galvanic isolation design, excellent EMC performance, suitable for high‑interference substation secondary environment. Hot‑swap function supports online replacement without powering off the whole device.

Processor: Multi‑core industrial processor, main frequency 600 MHz

Memory: 1 GB RAM, 2 GB onboard flash memory

Event record capacity: More than 1000 event logs, fault waveform recording support

Galvanic isolation: 2500 V AC isolation between internal bus and process side

Power supply: Powered by back‑plane bus of protection device

Power consumption: ≤12 W

Mounting mode: Plug‑in slot‑mount inside Relion 670 series IED, hot‑swappable

Operating temperature: −25 ℃ ~ +70 ℃

Storage temperature: −40 ℃ ~ +85 ℃

Humidity: 5‑95 %RH non‑condensing

Vibration & shock: Complies with IEC 60255‑21‑1 / IEC 60255‑21‑2

Certifications: CE, UL, IEC 61850 standard approval

Run all protection algorithms, logic condition judgment, sampling data processing. Complete fault event recording, disturbance waveform storage, parameter setting management. Realize internal data interaction with I/O boards and communication modules, support IEC 61850 communication service scheduling. Built‑in comprehensive self‑diagnosis, detect hardware abnormality and report fault code to HMI and station control system. Protection setting parameters can be configured via PC engineering tool.

Direct plug‑in installation into corresponding rear slot of Relion 670 / REX640 series protection device, support hot‑swap replacement. Ensure module is fully inserted and locking mechanism is fastened. After replacement, download complete protection parameter configuration, verify protection logic, event recording and communication function. Check device auxiliary power supply is within rated range.

Used as core processing unit inside busbar protection, generator protection, transformer protection IED. Widely applied in power plants, high‑voltage substations, heavy‑industry power distribution secondary protection systems.