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GE Multilin 369-HI-R-0-0-0-0-E Motor Protection Relay

Configured for three-phase motor protection, monitoring, and trip control in industrial motor management systems, the GE Multilin 369-HI-R-0-0-0-0-E (369 Motor Protection Relay) provides direct physical/electrical execution.

Hardware Specifications

Parameter	Specification
Model	369-HI-R-0-0-0-0-E
Brand	GE Multilin
Origin	General Electric Multilin product family
Weight	8 lb
Dimensions	11 cm W x 30 cm H x 21 cm L
Operating Temp	-40 deg C to +60 deg C
Power Consumption	Nominal 10 W, maximum 20 W
Product Type	Digital Motor Protection Relay
Series	369 Motor Management Relay
Control Power Supply	50-300 VDC, 60-265 VAC, 48-62 Hz
Phase Current Input	1 A and 5 A secondary CT inputs
Ground Current Input Frequency	20 to 100 Hz
Communication Interface	RS485 Modbus RTU
RTD Inputs	3-wire RTD inputs for 100 ohm platinum, 100 ohm nickel, 120 ohm nickel, and 10 ohm copper
Output Relays	4 configurable relays for trip, auxiliary, and alarm functions
Conformal Coating	Environmental option E coating for industrial environments

Industrial Control and Firmware Compatibility

The GE Multilin 369 series uses microprocessor-based processing for motor protection calculations, event recording, metering, and relay control functions. The relay supports RS485 Modbus RTU communication for integration with industrial control networks.

The unit provides deterministic relay operation through embedded protection firmware, including thermal overload modeling, phase current analysis, ground fault detection, locked rotor protection, mechanical jam detection, and undercurrent monitoring. Firmware operation supports configuration storage, self-testing routines, and recorded trip information.

Frequently Asked Questions

Q: Does the 369-HI-R-0-0-0-0-E support hot-swap replacement during operation?
A: The relay is designed as a panel-mounted protection device. Replacement procedures require isolation of control power, current inputs, and field wiring before removal.

Q: What current transformer inputs are supported by this relay?
A: The relay accepts phase current transformer inputs rated for 1 A or 5 A secondary values with software selection.

Q: Which communication protocol is available through the rear communication port?
A: The relay provides an RS485 serial interface supporting Modbus RTU communication.

Field Installation Guidelines

Install the relay in a suitable protective enclosure with access for control wiring, CT wiring, communication connections, and operator interface access.

Maintain separation between CT signal wiring, digital input wiring, and high voltage conductors to reduce electrical interference. Apply shield grounding practices according to the installation environment and system grounding requirements.

Verify CT polarity, phase sequence, and grounding connections before commissioning. Confirm control voltage compatibility with the selected HI power supply range before energizing the relay.

RTD wiring should use appropriate three-wire connection methods and avoid routing alongside high-current motor feeder cables. Configure protection parameters according to motor nameplate data and application requirements before placing the relay into service.

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