GE 369-H1-R-M-F-E-H-E Motor Intelligent Protection – Power Monitoring with Fault Warning

The GE 369-H1-R-M-F-E-H-E (now under Woodward post-acquisition) is a digital motor management relay designed for advanced protection and monitoring of medium-voltage motors in critical industrial environments. This specific configuration combines high-set instantaneous phase protection (H), ground fault detection (H1), Modbus communication (R-M), fused control power (F), 120V AC/DC supply (E), and comprehensive event logging (E). The GE 369-H1-R-M-F-E-H-E continuously tracks motor parameters including current, voltage, thermal capacity, and vibration, executing <500ms>

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Description

The GE 369-H1-R-M-F-E-H-E (now under Woodward post-acquisition) is a digital motor management relay designed for advanced protection and monitoring of medium-voltage motors in critical industrial environments. This specific configuration combines high-set instantaneous phase protection (H), ground fault detection (H1), Modbus communication (R-M), fused control power (F), 120V AC/DC supply (E), and comprehensive event logging (E). The GE 369-H1-R-M-F-E-H-E continuously tracks motor parameters including current, voltage, thermal capacity, and vibration, executing<500ms>

Formerly part of GE’s Multilin portfolio, this relay now leverages Woodward’s engineering expertise to deliver predictive analytics through thermal modeling algorithms that simulate motor heating/cooling characteristics. The GE 369-H1-R-M-F-E-H-E supports customizable protection curves via Woodward Toolkit™ software, allowing adaptation to unique motor profiles. With 128-event fault recording and waveform capture, it simplifies root-cause analysis after trips. Designed for switchgear integration, this unit protects motors up to 10kV while reducing unplanned downtime through early mechanical fault detection.

GE 369-H1-R-M-F-E-H-E

GE 369-H1-R-M-F-E-H-E

Technical Specifications

Parameter NameParameter Value
Product Model369-H1-R-M-F-E-H-E
ManufacturerWoodward (formerly GE Industrial Solutions)
Product TypeDigital Motor Protection Relay
Input Voltage120V AC/DC (Fused)
Phase Current Range0.1–10A (1A/5A CT configurable)
Protection FunctionsOverload (I²t), Phase Loss, Ground Fault (H1), Locked Rotor, Vibration (H), Thermal Capacity
CommunicationModbus RTU via RS485 (R-M)
Relay Outputs4 Form-C (5A @ 250V AC)
Analog Outputs2x 4-20mA (Programmable)
Event Memory128 Timestamped Events (E)
DisplayBacklit LCD + 10 Status LEDs
Operating Temp-40°C to +85°C
EnclosureNEMA 4X/IP66 (UV-Resistant Polycarbonate)
StandardsUL 508, IEC 60255, IEEE C37.90

Main Features and Advantages

Precision Protection: The GE 369-H1-R-M-F-E-H-E uses real-time thermal modeling to prevent motor insulation damage, dynamically adjusting trip curves based on actual operating conditions. High-set phase protection (H suffix) enables instantaneous response to catastrophic faults (>10x FLA), while sensitive ground fault detection (H1) identifies low-level leakage currents down to 0.1A.

Advanced Diagnostics: Integrated vibration monitoring (via 4-20mA sensors) detects bearing wear and mechanical imbalance. Event logs capture 128 time-stamped faults with pre-trigger waveforms, enabling rapid root-cause analysis. Modbus connectivity (R-M) exposes 50+ parameters – including thermal reserve (%) and starts/hour – to SCADA systems for predictive maintenance.

Deployment Flexibility: Dual isolated RS485 ports allow daisy-chaining without additional hardware. Programmable logic enables custom control sequences (e.g., auto-restart with lockout). The fused power input (F) protects against control circuit faults. NEMA 4X housing withstands corrosive environments, and conformal coating prevents humidity damage.

Application Field

The GE 369-H1-R-M-F-E-H-E safeguards motors in:


Power Generation: Critical ID/FD fans, boiler feed pumps, and circulating water pumps in coal/gas plants.



Water Management: Raw sewage pumps and aeration blowers, leveraging ground fault protection (H1) for wet environments.



Mining & Minerals: Crushers, conveyors, and ball mills where vibration monitoring (H) prevents mechanical failures.



HVAC Systems: Chillers and cooling towers in data centers, using Modbus (R-M) for BMS integration.



Oil & Gas: Pipeline compressors and offshore platform motors requiring NEMA 4X durability.


Related Products


Woodward 369-H1-R-M-F-E: Base model without vibration monitoring/event logging.



Woodward 369-H2-R-M-F-E-H-E: Enhanced ground fault (H2) for high-resistance grounding systems.



Woodward EASYGEN-3500: Synchronous generator controller for hybrid motor/gen systems.



Woodward SPM-D: Vibration analysis system complementing 369-H1-R-M-F-E-H-E.



Woodward 8440-258: Modbus-to-Ethernet gateway for legacy SCADA integration.



GE Multilin 269+: Legacy predecessor with similar functionality.

GE 369-H1-R-M-F-E-H-E

GE 369-H1-R-M-F-E-H-E

Installation and Maintenance

Pre-installation preparation: Verify CT ratios and wiring (5A secondary recommended). Ensure independent grounding of relay/CT circuits. Set Modbus address via DIP switches (default: 1). Confirm fused power input (F) matches 120V AC/DC supply (E). Isolate motor before installation.

Maintenance recommendations:


Quarterly: Review thermal capacity trends via Modbus; clean vents with low-pressure air.



Annually: Calibrate CT circuits using primary injection; test relay outputs via manual trip.



5-Year: Replace internal lithium battery (CR2032) to preserve event logs.



Firmware updates via Woodward Toolkit™ during planned outages.


 

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