GE UR-8FV CT/VT Module

Overview

The GE Multilin UR-8FV is a CT/VT (Current Transformer / Voltage Transformer) input module designed for the Universal Relay (UR) Series by General Electric Multilin. This module is engineered for upgrading or replacing CT/VT modules in existing UR systems, offering enhanced protection, measurement, and monitoring of AC power systems. The UR-8FV improves system reliability, operator safety, and equipment protection.

Key Features

• Comprehensive CT/VT Input Support

• Supports 3-phase CT inputs (1A or 5A)

• Includes ground CT input (1A or 5A)

• Features four-terminal voltage transformer input

• Enhanced Safety & Monitoring
  Improves power system safety and operational monitoring by ensuring accurate signal detection and isolation.

• Flexible Compatibility
  Compatible with a wide range of UR-series relays. Ideal for both retrofit upgrades and new installations.

• Wire Size Accommodation
  Accepts AWG 12 (commonly used), with a maximum supported wire size of AWG 10.

• Advanced Variants Available
  GE offers multiple CT/VT modules with sensitive ground protection and enhanced diagnostics. Sensitive ground variants offer 10x higher sensitivity compared to standard modules—particularly beneficial in high-demand systems.

Technical Specifications

Installation Notes

• Installation instructions and connection diagrams are provided in Universal Relay user manuals.

• Correct installation is essential for optimal performance and system safety.

• Improper connection may compromise relay operation or system protection functions.

Applications

• Power distribution monitoring

• Substation automation

• Industrial energy management

• Protection systems in utilities and critical infrastructure

Conclusion

The GE UR-8FV CT/VT Module is a critical component in the GE Universal Relay ecosystem, delivering reliable performance and precise measurements essential for modern electrical protection systems. For optimal system design, users are advised to explore available UR module variants and select based on their unique application requirements.