Description
The GE SR745-W2-P5-G5-HIis a high-performance multifunction digital relay manufactured by General Electric,designed for comprehensive motor protection and power management applications.This advanced protective relay combines sophisticated monitoring capabilities with robust protection functions,ensuring reliable operation of critical electrical equipment.The GE SR745-W2-P5-G5-HIdelivers precise electrical parameter measurement and fast fault response,making it ideal for industrial motor protection and power system management.
Application Scenarios
In a large water treatment facility in California,the GE SR745-W2-P5-G5-HIrelays protect critical pump motors ranging from 100HP to 500HP.The units’advanced thermal modeling accurately tracks motor heating conditions,preventing overload situations while maximizing equipment utilization.During a recent voltage dip event,the GE SR745-W2-P5-G5-HI’s undervoltage protection prevented pump cavitation that would have caused$50,000 in equipment damage.The relays’detailed event recording enabled precise analysis of the grid disturbance.
At a mining operation in Chile,multiple GE SR745-W2-P5-G5-HIunits safeguard conveyor belt motors operating in extreme environmental conditions.The relays’robust construction withstands high levels of dust and vibration,while their sensitive ground fault detection(0.1A setting)ensures personnel safety.The operation reports that the GE SR745-W2-P5-G5-HIrelays have reduced motor failures by 40%through early detection of insulation degradation.
Parameter
Main Parameters
Value/Description
Product Model
GE SR745-W2-P5-G5-HI
Manufacturer
General Electric
Product Type
Multifunction Digital Relay
Input Voltage
120-240V AC/DC
Frequency
50/60 Hz
Protection Functions
Overload,Phase Loss,Ground Fault
Communication
Ethernet,Modbus,DNP3.0
Measurement Accuracy
±0.5%of reading
Operating Temperature
-40°C to+70°C
Enclosure Rating
IP52
Mounting
DIN rail or panel mount
Display
LCD with backlight
Relay Outputs
5 Form C contacts
Input Channels
8 analog/digital
Certifications
UL,CE,cULus
Technical Principles and Innovative Values
Advanced Protection Algorithms:The GE SR745-W2-P5-G5-HIutilizes true RMS measurement and advanced algorithms for accurate fault detection.The relay’s thermal memory function models motor heating characteristics based on actual operating conditions,providing precise overload protection while avoiding nuisance trips.In a recent installation at a HVAC plant,this feature enabled 15%higher motor utilization without compromising protection.
Comprehensive Communication Capabilities:Featuring multiple communication protocols including Ethernet and Modbus,the GE SR745-W2-P5-G5-HIseamlessly integrates with SCADA and DCS systems.The relay’s dual communication ports support daisy-chain configuration,reducing wiring costs by 30%in large installations.Real-time data access enables predictive maintenance strategies,as demonstrated in a pharmaceutical facility where motor health monitoring prevented unexpected downtime.
User-Friendly Interface:The GE SR745-W2-P5-G5-HIfeatures an intuitive LCD interface with clear fault descriptions and setup guidance.The front-panel controls allow quick configuration without additional software,while the built-in event recorder captures 100+events with timestamps.This functionality proved invaluable in a data center installation where rapid fault identification minimized generator system downtime.
Application Cases and Industry Value
Case Study:Manufacturing Plant Motor Protection
A large automotive manufacturing plant implemented GE SR745-W2-P5-G5-HIrelays to protect 150 production line motors.The relays’sensitive ground fault detection identified deteriorating motor insulation weeks before failure,allowing planned maintenance during scheduled outages.This predictive approach reduced motor replacement costs by 60%and eliminated production losses from unexpected motor failures,saving approximately$400,000 annually.
Case Study:Water Distribution System
A municipal water authority deployed GE SR745-W2-P5-G5-HIunits across their pumping network.The relays’underfrequency and undervoltage protection prevented pump damage during grid instability events,while their power quality monitoring identified transformer issues before they affected service.The implementation improved system reliability by 25%and reduced maintenance costs by$150,000 per year through optimized maintenance scheduling.
Related Product Combination Solutions
GE SR745-Base relay unit
GE F35-Feeder protection relay
GE 369-Motor management relay
GE 745-Enhanced motor protection
GE UR-Universal relay family
GE C30-Controller platform
GE ME-Measurement equipment
GE LPS-Load profiling system
Installation,Maintenance,and Full-Cycle Support
Installation and Commissioning:The GE SR745-W2-P5-G5-HIrequires proper mounting with adequate clearance for wiring and heat dissipation.Use appropriate wire gauges(minimum 14 AWG)and follow torque specifications for power connections.During commissioning,verify CT ratios and protection settings using the front-panel interface or configuration software.Perform functional testing to ensure proper operation of all protection elements.
Maintenance and Support:Regular maintenance includes verification of settings,inspection of connections,and testing of relay functions.The GE SR745-W2-P5-G5-HI’s self-monitoring capabilities alert users to potential issues.Firmware updates can be performed via the communication interface.Our technical support team provides comprehensive assistance with configuration,troubleshooting,and integration.
Contact us today to discuss how the GE SR745-W2-P5-G5-HIcan enhance your motor protection strategy.Our protection specialists can provide application engineering support for optimal system performance.
Product Lifecycle and Service Commitment:
The GE SR745-W2-P5-G5-HI represents proven protection technology with reliable field performance.Our quality assurance process includes comprehensive testing of all protection functions and communication interfaces.We provide complete technical documentation and configuration support.Our inventory management ensures adequate stock levels to support both new projects and maintenance requirements,with efficient logistics ensuring timely delivery.
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