GE Multilin UR-81H / UR 81H Process Bus Module

Description

The UR‑81H is part of GE’s Multilin Universal Relay (UR) family, designed to modernize substations by replacing traditional copper wiring with fiber‑based digital communication. It acts as a process bus interface, converting analog current and voltage transformer inputs into IEC 61850‑9‑2 sampled values for direct relay integration.

Specifications

• Model Number: UR‑81H
• Manufacturer: GE Multilin
• Type: Process Bus Module for UR‑series relays
• Ports: Eight digital process bus ports
• Protocol: IEC 61850‑9‑2 sampled values
• Dimensions: 221 × 109 × 109 mm
• Weight: ~1.15 kg
• Warranty: Typically 1–3 years depending on supplier
• Application: Digital substations, CT/VT signal acquisition, relay integration

Features

• Digital Signal Conversion: Converts analog CT/VT inputs into IEC 61850‑compliant sampled values
• Eight‑Port Bus: Provides multiple connections for flexible relay and system integration
• Reduced Copper Wiring: Streamlines installation and lowers maintenance costs
• High Accuracy: Robust measurement design ensures stable performance under harsh conditions
• Cybersecurity Ready: Supports secure communication within modern digital substations
• Modular Design: Plug‑and‑play architecture compatible with UR‑series relays