Original ABB 1MRK002122‑ABR05 ultra‑long‑range single‑mode LDCM fiber module for Relion protection relays, power substation communication spare part.

Product Overview

1MRK002122‑ABR05 is ultra‑long‑range LR‑LDCM optical plug‑in module for ABB Relion series protection and control IED. It adopts 1550nm single‑mode fiber with ST connector, supports point‑to‑point line differential protection communication over ultra‑long distance. Provides complete galvanic isolation, eliminates strong electromagnetic interference in high‑voltage substation environment, supports GOOSE and line differential protection signal transmission. Widely used as maintenance spare part for long‑distance communication in power plant and high‑voltage substation relay‑protection systems.

Key Features

• Dual ST single‑mode fiber ports, 1550nm wavelength for ultra‑long‑distance optical transmission
• High‑isolation design, fully isolates optical channel from relay internal logic circuit
• Excellent anti‑EMI performance, stable operation under severe substation electromagnetic environment
• Slot plug‑in installation inside Relion protection IED, convenient for on‑site replacement
• Supports line differential protection and GOOSE fast protection message interaction
• Front‑panel LED indicators for link status and communication fault diagnosis

• Complies with IEC substation EMC and environmental adaptability standards

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Technical Specifications

• Brand: ABB
• Model: 1MRK002122‑ABR05
• Module Type: LR‑LDCM Ultra‑Long‑Range Optical Communication Module
• Fiber Type: Single‑mode fiber, ST connector, 1550 nm
• Max Transmission Distance: Up to 40km
• 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. Must work in pairs with matching ultra‑long‑range LDCM modules, communication parameter configuration is required after replacement.