Original ABB 1MRK002122‑ABR01 multimode fiber LDCM module for Relion protection relays, substation automation spare part.

Product Overview

1MRK002122‑ABR01 is LDCM multimode optical communication plug‑in module for ABB Relion series protection and control IED. It adopts ST‑type multimode fiber interface, realizes high‑speed point‑to‑point optical data transmission between protection devices, effectively suppresses strong electromagnetic interference in substation environment, supports GOOSE protection signal transmission. Widely used as maintenance spare part for power plant, high‑voltage substation relay protection system.

Key Features

• Dual ST multimode fiber ports for point‑to‑point optical communication
• High‑speed fiber transmission, good anti‑EMI performance for substation harsh environment
• Galvanic isolation between optical channel and internal relay logic circuit
• Slot plug‑in installation inside Relion protection IED, easy field replacement
• Supports GOOSE message for fast inter‑relay protection signal interaction
• Front‑panel LED indicators for link status and fault diagnosis

• Complies with substation IEC environmental and EMC standards

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Technical Specifications

• Brand: ABB
• Model: 1MRK002122‑ABR01
• Module Type: LDCM Optical Communication Module
• Fiber Type: Multimode fiber, ST connector
• Max Transmission Distance: 500m
• Power Supply: Powered by relay internal backplane bus
• Isolation Voltage: 1500V RMS dielectric isolation
• Operating Temp: ‑20℃ ~ +60℃
• Storage Temp: ‑40℃ ~ +85℃
• Humidity: 5‑95% non‑condensing

• Installation: Internal slot plug‑in for protection relay

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Compatibility

Suitable for ABB Relion REF615, REF620, REG670 series protection IED devices. Optical fiber pairing and communication parameter configuration are required after module replacement.