Key Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 369-HI-R-M-0-0-0-0 |
| Manufacturer | GE Multilin |
| Application | Three-phase AC motor protection, monitoring, and metering |
| Control Power (HI) | Typically 70–265 Vac or 90–300 Vdc (verify nameplate) |
| RTD Inputs (R) | 12 RTD channels, commonly Pt100 / Ni100 / Ni120 / Cu10 |
| Metering (M) | Three-phase voltage metering: V, kW, kVAR, PF, energy |
| Current Inputs | 1 A / 5 A secondary CTs; separate ground CT input |
| Communication | RS-485 Modbus RTU; no optional Ethernet/Profibus/DeviceNet in this build |
| Protection Functions | Thermal overload, jam/stall, phase loss/unbalance, ground fault, underload, start supervision, restart inhibit |
| Outputs | Multiple programmable relay outputs (trip, alarm, auxiliary) |
| Operating Temperature | Typically -40 °C to +60 °C |
| Configuration Software | GE Multilin EnerVista 369 |
Product Introduction
Most motor trips I see in the field are not mysterious. They are thermal overloads, stalled starts, ground faults, or phase unbalance that nobody caught early enough. The GE Multilin 369-HI-R-M-0-0-0-0 is the kind of relay that makes those problems easier to diagnose before they become a weekend callout. It is not a fancy new platform, but it is predictable, and that matters more than marketing copy on a dusty MCC floor.This build is useful because it covers three things at once: protection, temperature monitoring, and metering. The HI power supply lets it ride 70–265 Vac or 90–300 Vdc without an extra converter. The R option adds 12 RTD channels for stator and bearing monitoring. The M option brings in three-phase voltage metering so you can see kW, kVAR, and power factor without bolting on another instrument. The downside is simple: the “0-0-0-0” suffix means no optional Ethernet, Profibus, DeviceNet, or fiber port. If your SCADA expects Modbus TCP, this unit will not give it to you. It talks Modbus RTU over RS-485.
Quality SOP & Tech Pitfalls
The Lab Report (SOP)
- Visual inspection: confirm model 369-HI-R-M-0-0-0-0, serial number, firmware, nameplate power range, and terminal condition.
- Counterfeit check: inspect label quality, PCB finish, connectors, and mounting hardware.
- Power-up test: apply rated control power and verify display, LEDs, and self-test.
- I/O check: verify digital inputs, relay outputs, RTD readings, and CT/voltage input scaling.
- Communication test: confirm RS-485 Modbus RTU register reads using a test converter.
- Protection simulation: verify thermal model, ground fault, phase loss, and trip/alarm outputs where test equipment allows.
- Logging: record firmware version, settings file status, serial number, and photos.
- Packing: anti-static bag, foam protection, and sealed documentation.
The Engineer’s Warning (Pitfalls)Do not assume this relay ships with your old settings. The 369 stores configuration internally, and a replacement unit will either arrive blank or with someone else’s motor data. If you drop it in without loading the correct EnerVista 369 file, the motor may start, but the thermal model, RTD mapping, trip logic, and Modbus registers will be wrong. I have seen a “working” relay sit in a feeder for weeks because the trip relay was mapped to the wrong function. The motor ran fine until a real fault arrived, and then the protection did not behave as the drawings claimed.Also check the suffix carefully. 369-HI-R-M-0-0-0-E adds Ethernet/Modbus TCP. 369-HI-R-M-0-0-H-0 adds the harsh-environment coating. 369-HI-R-M-0-0-0-0 has none of those extras. If your panel relies on Ethernet or conformal coating, this exact build will disappoint you.
Installation & Configuration Guide
- Pre-Installation
- ⚠️ Follow site electrical safety rules. De-energize the motor feeder and verify zero energy.
- ⚠️ Back up the existing 369 settings file from EnerVista 369 before removing the old relay.
- Photograph terminal wiring, CT polarity, RTD assignments, relay output labels, and Modbus addresses.
- Removal
- Label every wire: CTs, VTs, RTDs, digital inputs, trip/alarm relays, and RS-485.
- Disconnect control power and verify absence of voltage.
- Remove terminal blocks or loosen screws carefully. Do not pull on wires.
- Extract the relay from the panel cutout.
- Installation
- Install the replacement 369-HI-R-M-0-0-0-0 into the same panel cutout.
- Reconnect CTs with correct polarity. Wrong CT polarity can cause false unbalance or ground fault trips.
- Connect RTDs to the correct channels and confirm sensor type in software.
- Wire relay outputs to trip/alarm circuits exactly as the original drawings show.
- Connect RS-485 with correct polarity and termination if required.
- Power-On & Testing
- Apply control power and verify the display boots.
- Load the saved EnerVista 369 settings file.
- Verify CT ratio, VT ratio, motor FLA, thermal model, RTD assignments, and trip/alarm mappings.
- Check Modbus RTU communication: node address, baud rate, parity, and register reads.
- Perform functional tests on trip and alarm relays before returning the motor to service.
- Confirm no active alarms exist before closing the breaker.
Compatible Replacement Models
| Compatibility | Model / Option | Notes |
|---|---|---|
| ✅ Drop-in Replacement | 369-HI-R-M-0-0-0-0 (same firmware) | Best choice. Load existing settings and verify I/O mapping. |
| ⚠️ Software Compatible | 369-HI-R-M-0-0-0-E | Adds Ethernet/Modbus TCP. Requires communication reconfiguration. |
| ⚠️ Engineering Review | 369-HI-R-M-0-0-H-0 | Adds harsh-environment coating. Verify mechanical and environmental needs. |
| ❌ Not a Direct Match | 369-HI-0-M-0-0-0-0 | No RTD inputs. Loses stator/bearing temperature monitoring. |
| ❌ System Upgrade | GE Multilin Multilin 850 / Multilin 469 | Newer platforms, but require full engineering, wiring, and logic review. |
Frequently Asked Questions (FAQ)
Can I use 369-HI-R-M-0-0-0-0 as a direct replacement?
Yes, if the original relay is the same order code. You still need to load the correct settings file and verify CT polarity, RTD mapping, and relay outputs.Does this model support Ethernet or Modbus TCP?
No. The “0-0-0-0” suffix means no optional communication module. It has RS-485 Modbus RTU only. If you need Ethernet, look at the -E suffix versions.Will my old settings work on the replacement unit?
Only if you saved them. The 369 configuration lives inside the relay. Without an EnerVista 369 backup, you will need to rebuild the settings from drawings or another identical relay.What does the R option actually add?
It adds 12 RTD inputs for stator, bearing, or ambient temperature monitoring. Typical sensor types include Pt100, Ni100, Ni120, and Cu10.What does the M option do?
It adds three-phase voltage metering. That gives you voltage, kW, kVAR, power factor, and energy data alongside current measurements.Can I hot-swap this relay?
Not recommended. The 369 controls trip and alarm relays tied to the motor feeder. Replacing it live risks unintended tripping or loss of protection. Treat it as planned maintenance.How do I know the firmware is compatible?
Check the front label or the EnerVista 369 device info. If the firmware differs significantly from the original, review the release notes and test the settings before putting the motor back into service.
