GE Multilin UR-8FH Motor Protection Module | UR Series

GE Multilin UR-8FH: Advanced Motor Protection Module

The GE Multilin UR-8FH CT/VT Module delivers superior motor protection with lightning-fast response times. This reliable module detects mechanical jams and phase faults in under 12ms, making it ideal for critical industrial motor applications.

Core Protection Features

• Mechanical Jam Protection: Adjustable pickup from 1-10× FLA with 97-98% dropout accuracy
• Directional Overcurrent: 90° quadrature voltage sensing with ±2° angle precision
• Ultra-Fast Operation: Reverse load trips in <12ms, forward fault blocks in <8ms
• FlexLogic Programming: Fully programmable contact outputs for custom protection schemes

Technical Specifications

• Brand & Model: GE Multilin UR-8FH (UR8FH)
• Current Range: 0.1-10× CT rating with 0.5% accuracy up to 2× CT
• Timing Accuracy: 0.10-600.00s delay with ±3% or ±20ms precision
• Voltage Threshold: 0.004-3.000 pu in 1V steps
• Operating Temperature: -20°C to +60°C industrial range
• Output Signal: Programmable FlexLogic contacts

Installation Requirements

• System Compatibility: Works with all UR-series protection relays
• Mounting Options: Standard 19-inch racks or DIN rail installation
• Power Supply: 24-250V DC/AC operating voltage
• Included Hardware: DIN rail mount kit for easy installation

Certifications & Compliance

• UL 508 Industrial Equipment Standard
• CE Mark for European Market
• IEC 60255 Protection Relay Compliance
• Proven in 15,000+ global installations

Package Contents

• GE Multilin UR-8FH Protection Module
• Complete installation manual
• DIN rail mounting kit
• 1-Year Manufacturer Warranty

Application Success Story

• Steel Mill Performance: A major steel plant achieved 72% reduction in motor failures after installing GE Multilin UR-8FH modules on their 450HP, 4.16kV rolling mill motors, demonstrating exceptional protection capabilities.

Frequently Asked Questions

• What is the response time for fault detection?
  The UR-8FH trips reverse loads in under 12ms and blocks forward faults in under 8ms.
• Is this module compatible with existing UR systems?
  Yes, it works seamlessly with all UR-series protection relays.
• What power supply is required?
  It operates on 24-250V DC/AC power sources.

Documentation Download

Download Detailed Product Specifications PDF