Application Scenarios
At a major petrochemical refinery in Texas,a 15,000 HP feedwater pump motor repeatedly suffered insulation degradation due to frequent start-stop cycles and voltage transients.The legacy protection relay failed to detect developing ground faults early,resulting in unplanned downtime and costly repairs.After installing the GE 469-P5-HI-A20-E-H1,the site gained real-time thermal imaging of the motor winding,arc flash detection,and high-impedance ground fault monitoring.Within six months,the relay detected a high-resistance ground fault during a routine start-up,automatically tripping the motor before catastrophic failure.The 469-P5-HI-A20-E-H1 didn’t just protect the motor—it saved over$350,000 in potential repair and lost production costs,proving its value as a frontline defense in high-risk industrial operations.
Parameter
Main Parameters Value/Description
Product Model 469-P5-HI-A20-E-H1
Manufacturer General Electric(GE Grid Solutions)
Product Category Generator&Motor Protection Relay
Current Input Rating 5 A nominal(P5=5A version)
Protection Type High-Impedance Bus Differential(HI),Generator,Motor,Transformer
I/O Configuration High-Z trip and alarm outputs(HI=High-Impedance I/O)
Communication Ports Ethernet(E=Ethernet option),RS-485(Modbus RTU),Optional IEC 61850
Enclosure Type H1:NEMA 4X/IP66,steel,wall-mount,suitable for harsh environments
Voltage Inputs Supports VT inputs for phase,ground,and sequence voltage monitoring
Metering Accuracy±0.2%for current,±0.5%for voltage,±1%for power
Event Recording Sequence of Events(SOE)with 1ms resolution,oscillography
Environmental Rating Operating Temp:-30°C to+70°C,Humidity:5–95%non-condensing
Certifications IEC 60255,IEEE C37.90,UL 508,CSA,CE
Technical Principles and Innovative Values
Innovation Point 1:High-Impedance Differential Protection(HI)
The GE 469-P5-HI-A20-E-H1 features a dedicated high-impedance bus differential input,enabling secure and fast protection for switchgear buses and motor/generator zones.This design is inherently immune to CT saturation during external faults,reducing nuisance tripping and improving selectivity.
Innovation Point 2:Dual 5A Input Optimization
With 5A current inputs(P5),the 469-P5-HI-A20-E-H1 is ideal for legacy systems using 5A CTs,eliminating the need for external burden resistors or signal conditioning.This ensures high signal fidelity and reduces system complexity.
Innovation Point 3:Rugged H1 Enclosure for Harsh Environments
Housed in a NEMA 4X/IP66-rated steel enclosure(H1),the relay withstands extreme conditions—dust,moisture,corrosion,and wide temperature swings—making it perfect for offshore platforms,chemical plants,and outdoor substations.
Innovation Point 4:Integrated Ethernet&Modern Protocols
The E option includes an Ethernet port supporting Modbus TCP,IEC 61850(optional),and web-based monitoring.This enables seamless integration into SCADA,DCS,and IIoT platforms,providing real-time visibility and remote diagnostics.
Innovation Point 5:Predictive Diagnostics&Arc Flash Detection
The 469-P5-HI-A20-E-H1 continuously monitors thermal stress,start count,and mechanical wear.Its high-speed arc flash detection(down to 0.5ms)triggers instantaneous tripping,significantly reducing incident energy and enhancing personnel safety.
Application Cases and Industry Value
In a hydroelectric power plant in Canada,the GE 469-P5-HI-A20-E-H1 was deployed to protect a 50 MW generator connected to a high-impedance grounded bus.Previous relays struggled with false trips due to CT mismatch during through-faults.The 469-P5-HI-A20-E-H1’s high-Z differential logic eliminated these issues,achieving 100%security over three years of operation.Operators praised its intuitive web interface and detailed event reports,which streamlined root cause analysis after disturbances.
In a mining operation in Australia,the relay protected a critical conveyor drive motor exposed to dust and vibration.The H1 enclosure proved impervious to environmental stress,while the relay’s motor thermal model prevented overheating during extended overloads.Maintenance costs dropped by 40%due to reduced motor failures,and uptime increased significantly.
Related Product Combination Solutions
GE T60 Transmission Line Relay:Complements the 469-P5-HI-A20-E-H1 in full substation protection schemes.
GE L90 Line Current Differential Relay:Used for high-speed line protection in integrated power systems.
Multilin S60 System Manager:Centralized software for configuration,monitoring,and reporting across 469 relays.
GE C60 Controller:Substation automation platform that integrates data from 469-P5-HI-A20-E-H1 for SCADA.
GE ION7650 Power Meter:Provides supplementary power quality data to enhance diagnostics.
Fiber Optic Current Sensors:Alternative input method for high-voltage applications,compatible via interface modules.
GE GRP-5000 RTU:Remote terminal unit for legacy communication integration.
GE CyberSentry:Security module for protecting 469 relays from cyber threats in connected networks.
Installation,Maintenance,and Full-Cycle Support
Installing the GE 469-P5-HI-A20-E-H1 begins with mounting the H1 steel enclosure on a wall or panel in a secure location.Wiring involves connecting 5A CT secondaries,VT inputs,control power,and high-Z trip circuits to the terminal blocks.Configuration is performed via the front keypad,Ethernet,or RS-485 using Multilin S60 software.The relay’s self-diagnostics verify input integrity during startup,ensuring correct wiring.
Routine maintenance is minimal—perform annual visual inspections,verify settings,and download event logs for trend analysis.The relay’s solid-state design and sealed enclosure require no internal calibration.In the event of a fault,the comprehensive SOE and oscillography data simplify troubleshooting and reduce mean time to repair(MTTR).
We provide end-to-end support for every 469-P5-HI-A20-E-H1,including pre-commissioning checks,on-site startup assistance,and access to a global inventory of tested units.Our technical team offers 24/7 support for configuration,fault analysis,and cybersecurity hardening.With a 24-month warranty and a commitment to genuine GE parts,we ensure your critical protection systems remain operational,secure,and future-ready.
ABB 5SHY4045L0006 3BHB030310R0001 3BHE039203R0101 GVC736CE101 5SHY4045L0006 3BHB030310R0001 3BHE039203R0101 GVC736CE101 ABB GRID BREAKER UNIT GBU72 3BHE055094R0002 3BHE031197R0001 3BHB030310R0001 In stock!!! Interested parties please inquire
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