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 tripping for faults like locked rotor, phase imbalance, or bearing failure. Its dual-port RS485 enables seamless daisy-chaining in multi-motor systems, while NEMA 4X/IP66-rated housing ensures reliability in harsh conditions like mining or chemical plants.

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

Technical Specifications

Parameter Name	Parameter Value
Product Model	369-H1-R-M-F-E-H-E
Manufacturer	Woodward (formerly GE Industrial Solutions)
Product Type	Digital Motor Protection Relay
Input Voltage	120V AC/DC (Fused)
Phase Current Range	0.1–10A (1A/5A CT configurable)
Protection Functions	Overload (I²t), Phase Loss, Ground Fault (H1), Locked Rotor, Vibration (H), Thermal Capacity
Communication	Modbus RTU via RS485 (R-M)
Relay Outputs	4 Form-C (5A @ 250V AC)
Analog Outputs	2x 4-20mA (Programmable)
Event Memory	128 Timestamped Events (E)
Display	Backlit LCD + 10 Status LEDs
Operating Temp	-40°C to +85°C
Enclosure	NEMA 4X/IP66 (UV-Resistant Polycarbonate)
Standards	UL 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

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.