Description
The GE UR9EHis an advanced multi-function protective relay from GE’s Multilin series,designed for comprehensive motor protection and management in demanding industrial applications.This sophisticated protection device combines multiple protective functions with advanced monitoring capabilities,providing reliable equipment protection and system diagnostics for critical motors where operational reliability and equipment safety are paramount.
Application Scenarios
In a large mining operation’s conveyor drive system,the GE UR9EHrelays protect 1500HP crusher motors that operate continuously under heavy load conditions.During a recent voltage dip event,the UR9EH’s advanced stall protection and under-voltage ride-through capabilities prevented motor tripping,maintaining production continuity and avoiding an estimated$250,000 in lost production.The mine’s electrical superintendent reported:”The UR9EH’s sophisticated protection algorithms have reduced our motor-related downtime by 60%while providing valuable operational data for predictive maintenance.”
Parameter
Main Parameters
Value/Description
Product Model
UR9EH
Manufacturer
General Electric(GE)
Product Type
Motor Protection Relay
Rated Current
5A(1-10A adjustable)
Voltage Input
120/240V AC
Protection Functions
Overload,Short Circuit,Ground Fault
Thermal Capacity
6 adjustable curves
Communication
RS485,Ethernet optional
Protocols
Modbus,DNP3.0
Event Records
1000 events with oscillography
Display
LCD with backlight
Control Power
24-250V AC/DC
Operating Temperature
-40°C to+70°C
Enclosure Rating
IP54
Certifications
UL,IEC,CSA
Technical Principles and Innovative Values
Advanced Thermal Protection:The GE UR9EHutilizes sophisticated thermal modeling algorithms that accurately simulate motor heating and cooling characteristics based on actual operating conditions.The relay’s thermal memory function accounts for motor cooling during off periods,providing accurate overload protection that prevents nuisance tripping while ensuring motor safety under varying load conditions.
Comprehensive Fault Detection:Featuring high-set instantaneous overcurrent protection with adjustable delays,the UR9EHprovides rapid response to severe faults while coordinating with upstream protection devices.The ground fault protection includes sensitive settings for cable protection and higher settings for equipment protection,ensuring comprehensive ground fault coverage across the system.
Advanced Communication Capabilities:Supporting multiple communication protocols including Modbus RTU and DNP3.0,the GE UR9EHenables seamless integration with SCADA systems and asset management platforms.The relay’s detailed event records with oscillographic data provide valuable information for post-event analysis and system improvement.
User-Friendly Interface:The large backlit LCD display provides clear status information and measurements,while the intuitive menu structure simplifies configuration and operation.The UR9EH’s front-panel pushbuttons allow for local control and setting adjustments without requiring additional software tools.
Application Cases and Industry Value
In a chemical processing plant’s critical cooling water system,GE UR9EHrelays protect 12 large pump motors ranging from 100HP to 500HP.The installation has operated for over five years with zero protection-related failures,successfully preventing three potential motor burnouts through early detection of bearing degradation and winding insulation issues.The system’s predictive maintenance capability,enabled by the UR9EH’s detailed motor performance data,has reduced maintenance costs by 35%and increased motor availability by 25%.
Related Product Combination Solutions
GE UR9AH|Basic motor protection relay
GE UR9FH|Enhanced communication version
GE UR7HH|High-voltage motor protection
GE 369|Motor management relay
GE F60|Feeder protection relay
GE 745|Transformer protection relay
GE QuickSet|Configuration software
Installation and Maintenance
Installation Preparation:Proper installation of the GE UR9EHrequires careful consideration of CT selection and wiring.Ensure current transformers are properly sized and rated for the application,with adequate burden capacity.The relay should be mounted in a location that allows for easy viewing of the display and access to communication ports.
Maintenance Recommendations:Perform annual calibration verification and setting reviews based on operational experience.Regularly download event records for analysis and monitor thermal capacity readings to identify changing motor conditions.Maintain battery backup for clock and event record retention during power outages.
Technical Support:We provide comprehensive support for UR9EHapplications,including coordination studies,configuration assistance,and troubleshooting.Our inventory includes factory-calibrated units for rapid replacement when required.
Contact us for expert assistance in implementing GE UR9EHmotor protection relays for your critical motor applications.Our technical team can provide customized protection solutions tailored to your specific operational requirements.
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