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GE Multilin 369-HI-0-0-0-0 Motor Protection System

The GE Multilin 369-HI-0-0-0-0, also cataloged as the 369 Motor Protection Relay System, operates as a dedicated hardware component for three-phase motor protection, monitoring, and control within GE Multilin motor management platforms.

Hardware Specifications

Parameter	Specification
Model	369-HI-0-0-0-0
Brand	GE Multilin
Weight	10 lbs
Dimensions	29.6 cm x 10.7 cm x 20.5 cm
Operating Temp	-40 deg C to +60 deg C
Power Consumption	Nominal 10 W, maximum 20 W
Control Power Supply	90-300 VDC or 70-265 VAC, 47-63 Hz
Phase Current Inputs	1 A or 5 A secondary selectable
Ground CT Input	1 A, 5 A, or 50:0.025 HGF ground CT
RTD Inputs	12 programmable RTD inputs
Digital Inputs	8 configurable dry-contact inputs
Relay Outputs	4 Form-C SPDT control output relays
Relay Contact Rating	12 A continuous, 30 A make for 0.2 sec at 250 VAC / 30 VDC
Communication Interface	RS485 Modbus RTU, front RS232 configuration port
Display Interface	40-character backlit LCD with LED status indicators
Mounting Type	Panel mount, drawout or standard cutoff cutout
Enclosure Rating	IP54 / NEMA 12 front panel when mounted

GE Multilin Motor Protection Firmware and Network Compatibility

The 369 motor protection system uses microprocessor-based processing for thermal capacity calculation, overload curve execution, phase overcurrent protection, ground fault detection, stall protection, mechanical jam detection, undercurrent monitoring, and current unbalance analysis. The relay records sequence of events, trip records, motor start statistics, and diagnostic measurements through the embedded firmware functions.

The HI control power configuration supports the 90-300 VDC and 70-265 VAC supply range. The relay provides RS485 Modbus RTU communication for integration with industrial monitoring systems. Firmware configuration and parameter management are performed through the front RS232 interface using EnerVista 369 Setup Software.

Frequently Asked Questions

Q: Does the 369-HI-0-0-0-0 include optional RTD input hardware?
A: The 369-HI-0-0-0-0 base configuration does not include optional RTD inputs. RTD capability depends on the selected model configuration.

Q: What current transformer inputs are supported by the relay?
A: The relay supports phase current inputs with 1 A or 5 A secondary selection and supports ground current measurement through compatible ground CT configurations.

Q: What communication protocol is available on the standard unit?
A: The standard unit provides an RS485 serial interface supporting Modbus RTU communication.

Field Installation Guidelines

Install the relay in a suitable panel enclosure with correct mechanical clearance for the rear terminals, wiring access, and service operation. Connect current transformer circuits using properly rated conductors and maintain correct CT polarity for phase and ground measurement accuracy.

Separate low-level communication wiring from high-current motor power conductors to reduce electromagnetic interference. Terminate RS485 communication wiring according to the network topology requirements and apply appropriate cable shielding and grounding practices.

Verify control power polarity for DC supply applications and confirm the AC supply frequency range before energizing the device. Check all trip, alarm, and auxiliary relay wiring against the application control diagram before commissioning.

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