Original ABB LDCM fiber module for Relion protection relay, substation line differential protection spare part.

Product Overview

N93‑3004‑05 1MRK002122‑ABR13 is LDCM optical communication plug‑in module for ABB Relion protection and control IED. Equipped with dual ST fiber connectors, it realizes point‑to‑point data transmission for line differential protection, provides galvanic isolation against substation electromagnetic interference, supports GOOSE message communication. Widely used as maintenance spare part for power plant and substation relay protection systems.

Key Features

• Dual ST fiber ports for point‑to‑point differential protection communication
• Galvanic isolation, strong anti‑EMI performance for substation site
• Slot plug‑in design for Relion IED, easy on‑site replacement
• Supports GOOSE and line differential protection signal transmission
• Front‑panel LED for link status and fault diagnosis

• Meets IEC EMC and industrial environmental standards

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Technical Specifications

• Brand: ABB
• Model: N93‑3004‑05, 1MRK002122‑ABR13
• Module Type: LDCM Optical Communication Module
• Connector: ST fiber interface
• Power Supply: Backplane powered
• Isolation Voltage: 1500V RMS
• 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

Compatible with ABB Relion REF615, REF620, REG670 IED. Use in pairs with matching LDCM modules, communication configuration required after replacement.