Product Core Brief
- Model: 369-HI-0-M-0-E-0
- Brand: GE Multilin
- Series: 369 Motor Management Relay
- Core Function: Protects and monitors three-phase AC motors using thermal modeling, current-based fault detection, metering, and Modbus RTU communication.
- Product Type: Motor Management / Motor Protection Relay
- Key Specs: HI control power 50–300 VDC / 60–265 VAC | Optional metering package | RS485 Modbus RTU | Enhanced diagnostics panel
- Condition: New Original / New Surplus
Key Technical Specifications
- Part Number: 369-HI-0-M-0-E-0
- Product Family: GE Multilin 369 Motor Management Relay
- Control Power: HI option, typically 50–300 VDC / 60–265 VAC, 50/60 Hz
- Motor Type: Three-phase AC induction motors
- Current Inputs: Phase current via 1 A or 5 A CTs
- Ground Fault Input: Core-balance / ground CT input supported
- Metering Option: M option enables voltage/power metering package (kW, kvar, kVA, PF, Hz, energy)
- RTD Inputs: None in this build; the third position is “0,” so no built-in RTD module
- Communication: RS485 Modbus RTU standard; front-panel RS232 for configuration
- Analog Output: One standard analog output included with the base unit
- Diagnostics: Enhanced diagnostics and enhanced panel option (E)
- Configuration Software: EnerVista 369
Product Introduction (No Fluff)
The GE Multilin 369-HI-0-M-0-E-0 is a three-phase motor management relay built for MCC and switchgear applications. It provides thermal overload protection, stall/jam detection, phase unbalance, ground fault supervision, and event recording, with an added metering package for electrical parameter monitoring.
This configuration is useful when a plant needs metering and enhanced diagnostics but does not require RTD temperature monitoring. Matching the exact option code avoids commissioning gaps, especially when replacing an existing relay in a live motor feeder.
QA & Testing SOP (Dynamic & Transparent)
For a motor protection relay, we verify more than power-on LEDs. The goal is to confirm that protection logic, metering, and communication behave correctly before the unit goes back into service.
- Label and option verification: Confirm 369-HI-0-M-0-E-0 on the nameplate. Check that the third option position is “0” (no RTD) and the metering option “M” is present.
- Physical inspection: Inspect rear terminals, front-panel keypad, display, and case latches. Reject units with cracked connectors, corrosion, or damaged display windows.
- Control power test: Apply rated HI control power and verify normal boot, display initialization, and status LED behavior.
- Secondary injection check: Use a relay test set to inject phase and ground current signals. Verify trip/alarm responses for overload, stall, unbalance, and ground fault functions according to configured setpoints.
- Metering and communication validation: Confirm metering values read correctly via the front panel and over RS485 Modbus RTU. Verify EnerVista 369 connectivity if the port is enabled.
- ESD-safe handling: Pack in anti-static bags with foam support. Include part number, option code, and test status on the shipping label.
Installation Pitfalls & Guide (Engineer to Engineer)
❗ Option code matters. This unit is 369-HI-0-M-0-E-0, not an “R” RTD version. If your application depends on stator or bearing temperature monitoring, this relay will not provide built-in RTD inputs.
❗ Verify CT ratios and wiring polarity. Incorrect CT ratios or reversed phase wiring can cause false unbalance alarms, incorrect metering, or missed ground faults.
❗ Do not assume communication settings carry over. Modbus address, baud rate, and parity must match the SCADA or PLC configuration. A relay may power up fine but still appear offline.
❗ Check control power range before energizing. The HI option supports wide-range AC/DC control power, but applying the wrong supply or unstable auxiliary voltage can cause nuisance resets.
Replacement steps:
- Pre-install: Record existing setpoints, CT ratios, Modbus settings, and I/O mappings. De-energize the control circuit safely.
- Removal: Label all CT, voltage, digital I/O, and communication wires. Remove the relay without stressing rear terminals.
- Install: Mount the new unit, verify CT polarity, control power wiring, and RS485 termination.
- Power-on test: Restore control power, load settings via EnerVista 369, verify metering, and perform a controlled secondary injection test before returning the motor to service.
Technical FAQ
Is this a direct replacement for my existing 369 relay?
Only if the option code matches. The “HI” supply, “M” metering, “0” RTD position, and “E” enhanced diagnostics must align with your installed configuration. Swapping in a different option code can remove metering, change analog outputs, or alter communication behavior.
Does this model include RTD temperature inputs?
No. In 369-HI-0-M-0-E-0, the third position is “0,” meaning no optional RTD inputs. If you need stator or bearing temperature monitoring, you would need an “R” option unit.
What communication does it support?
RS485 Modbus RTU is standard, with a front-panel RS232 port for local configuration. Ethernet, Profibus, DeviceNet, or fiber options depend on other submodels and are not indicated in this part number.
Do you offer warranty on surplus stock?
Warranty depends on lot condition and traceability. Functional testing can be provided, but exact warranty length should be confirmed before purchase.
Is pricing negotiable?
Yes, especially for multiple units or verified replacement projects. Pricing varies with revision, test status, and availability.
