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GE Multilin 369-HI-R-M-0-0-0 Motor Management Relay

The GE Multilin 369-HI-R-M-0-0-0, also cataloged as the 369 Motor Management Relay, operates as a dedicated hardware component for motor protection, thermal monitoring, and electrical measurement within GE Multilin motor protection platforms.

Hardware Specifications

Parameter	Specification
Model	369-HI-R-M-0-0-0
Brand	GE Multilin
Weight	4.5 kg
Dimensions	29.6 cm x 10.7 cm x 20.5 cm
Operating Temp	-40 deg C to +60 deg C
Power Consumption	Not specified
Device Type	Digital Microprocessor-Based Motor Management Relay
Control Power	50-300 VDC / 60-265 VAC, 50/60 Hz
Current Inputs	1 A or 5 A secondary CT inputs, field configurable
Voltage Inputs	Up to 280 VAC phase line voltage via metering option
RTD Inputs	12 programmable RTD inputs
Digital Inputs	6 optically isolated assignable inputs
Analog Outputs	4 configurable outputs, 0-1 mA, 0-20 mA, or 4-20 mA
Communication Interface	RS232 front port and RS485 rear port with Modbus RTU
Mounting Type	Standard panel mount

GE Multilin Motor Thermal and Power Monitoring Functions

The 369-HI-R-M-0-0-0 integrates motor protection algorithms with thermal measurement and power metering functions. The 12-channel RTD package provides direct temperature acquisition for stator windings, bearings, and ambient monitoring. The motor thermal model supports ANSI 49 protection behavior, while current and voltage measurement channels provide monitoring of operating electrical conditions.

The integrated metering option provides measurement of kW, kVA, kvar, power factor, kWh, frequency, and additional analog output assignment. Analog channels can be configured for process monitoring or connection to external control systems.

Frequently Asked Questions

Q: Does the 369-HI-R-M-0-0-0 support hot-swap replacement during operation?
A: The relay is designed for panel mounting and fixed wiring installation. Hot-swap operation is not specified for this hardware configuration.

Q: Which communication protocol is available through the rear communication port?
A: The rear RS485 port supports Modbus RTU communication for connection to supervisory or control systems.

Q: How are RTD inputs used in the relay application?
A: The 12 programmable RTD inputs acquire motor thermal signals from sensors such as platinum, nickel, and copper resistance temperature devices for temperature-based protection functions.

Field Installation Guidelines

Install the GE Multilin 369-HI-R-M-0-0-0 in a suitable panel enclosure with adequate clearance for wiring access and heat dissipation. Connect CT secondary wiring according to the required phase and ground current measurement configuration.

Use shielded cables for low-level analog and communication wiring where required. Terminate cable shields according to site grounding practices to reduce electrical noise coupling. Separate communication, RTD, and analog signal wiring from high-current motor feeder conductors.

Verify control power compatibility before energizing the relay. Confirm CT polarity, VT connections, RTD channel assignments, and communication parameters during commissioning. Firmware compatibility should be checked before performing any configuration or maintenance procedure.

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