Description
Product Introduction
The GE 369-HI-0-M-0-0-0-E is a digital motor management relay from the GE Multilin 369 family, developed for protecting and controlling medium-voltage and large low-voltage three-phase motors. It combines motor protection, diagnostics, event recording, and electrical metering into one platform, making it common in power plants, mining operations, petrochemical facilities, and water treatment stations.
Compared with the base 369 model, this configuration includes the optional Metering (M) package, providing voltage, power, energy, and frequency measurements in addition to motor protection. The Enhanced (E) option adds advanced diagnostics, Motor Health Reports, security audit trails, expanded event recording, and a dedicated motor-status faceplate.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | GE Multilin |
| Model | 369-HI-0-M-0-0-0-E |
| Product Family | Multilin 369 |
| Product Type | Digital Motor Management Relay |
| Application | Medium-size AC Motors |
| Control Power | 50–300 VDC / 40–265 VAC |
| RTD Inputs | None (0 option) |
| Metering Package | Included |
| Fiber Optic Port | Not Installed |
| Optional Network Protocol | None |
| Standard Communications | Front RS232, Rear RS485 |
| Standard Protocol | Modbus RTU |
| Event Recorder | Enhanced |
| Motor Health Report | Included |
| Security Audit Trail | Included |
| Mounting | Panel Mount (Non-drawout) |
| Product Status | Legacy Product (Discontinued) |
Application Scenarios & The “Trench” Experience
Here’s a situation that’s more common than people expect.
A 4,160 V cooling-water pump refuses to restart after a brief utility disturbance. Operations suspects the motor. Maintenance checks insulation resistance and finds nothing wrong. The actual problem is an aging motor relay whose internal electronics finally failed after years of continuous operation. The motor wasn’t the issue at all.
Typical applications include:
- Power Generation — Boiler feed pumps where thermal modeling prevents rotor overheating during repeated starts.
- Mining — Crusher and conveyor motors requiring locked-rotor and current-unbalance protection.
- Oil & Gas — Compressor drives where electrical metering helps identify developing mechanical problems.
- Water & Wastewater — High-service pumps requiring overload, undercurrent, and restart supervision.
- Chemical Processing — Agitator and blower motors where event recording simplifies trip analysis.
Field Replacement Example
During a scheduled outage, a plant replaced a failed Multilin 369 with the identical 369-HI-0-M-0-0-0-E configuration. Because the control power range, metering option, and communications matched the existing installation, engineers restored the archived settings through EnerVista software, completed secondary injection testing, and returned the motor to service before the next production shift. No rewiring was required.
Transparency SOP: Quality Assurance & Testing
We don’t just ship boxes; we test them on actual GE Multilin relay platforms whenever possible.
- Inbound Inspection
- Verify OEM labels and ordering code.
- Inspect terminals, LCD, keypad, connectors, and enclosure.
- Check for counterfeit indicators or previous repair work.
- Live Rig Testing
- Apply rated HI control power.
- Verify successful startup.
- Confirm keypad, display, LEDs, RS232, and RS485 communication.
- Electrical Parameter Checks
- Test digital inputs and output contacts.
- Verify metering functions.
- Confirm communication stability.
- Firmware Verification
- Record firmware revision.
- Record hardware revision.
- Verify compatibility with available EnerVista configuration files.
- Final QC & Packaging
- Complete operational inspection.
- Anti-static protection.
- Shock-resistant packaging.
- Serial number traceability.
- 369-HI-0-M-0-0-0-E
- 369-HI-0-M-0-0-0-E
The Veteran’s Tech Trap Guide
⚠️ Don’t confuse the “M” option with motor protection.
The relay protects the motor regardless. The M simply adds advanced electrical metering. If you’re replacing an existing relay, match the ordering code exactly or you’ll lose measurement functions.
⚠️ Verify your control voltage first.
This relay uses the HI power supply (50–300 VDC / 40–265 VAC). Installing it on a low-voltage control circuit intended for a LO model will leave the relay dead on arrival.
❗ No RTDs means no winding temperature inputs.
This model has 0 RTD inputs. If the original installation monitored winding or bearing temperatures, verify that you’re not replacing an R-option relay with this configuration.
⚠️ Back up the settings before removing the relay.
If the relay still communicates, save the complete configuration using EnerVista. Rebuilding protection settings manually can take several hours, especially when custom start curves and lockout timers have been tuned over years of operation.
Frequently Asked Questions (FAQ)
Q1. Is the GE 369-HI-0-M-0-0-0-E still manufactured?
No. The Multilin 369 has been discontinued. GE Vernova recommends the Multilin 859 as the current replacement platform for new projects.
Q2. What does the “M” option add?
It enables the metering package, including voltage, power, energy, and frequency measurements, plus additional analog outputs. The base relay does not include these expanded metering functions.
Q3. Does this relay support Ethernet?
No. This specific ordering code does not include an Ethernet communication option. It provides the standard communication interfaces, including RS232 for setup and RS485 with Modbus RTU. Ethernet required a different factory ordering option.
Q4. Can the relay be hot-swapped?
No. The Multilin 369 is a non-drawout relay. Isolate control power and follow plant lockout/tagout procedures before removal or installation.
Q5. Why is surplus inventory available if the product is discontinued?
Most units come from plant spare inventories, cancelled modernization projects, or excess maintenance stock. These are genuine legacy industrial products rather than newly manufactured devices.
Q6. Is this relay suitable for medium-voltage motors?
Yes. The Multilin 369 was specifically designed for protection and management of medium-size AC motors, including medium-voltage applications, with thermal modeling, event recording, diagnostics, and motor health reporting.
Q7. What warranty is typically available?
Industrial automation suppliers commonly provide a 12-month warranty for functionally tested new surplus or refurbished units. Before installation, verify the hardware revision, firmware version, and ordering code against the original relay to avoid compatibility issues.
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