Key Technical Specifications
| Parameter | Value |
|---|---|
| Current Input | HI Version: 1–100A AC Direct (Rogowski Coil) |
| Control Power | 24–240V AC/DC (Wide Range) |
| Communication | RS485 Modbus RTU (Standard) |
| Measurement Option | “M”: Optional Metering Package Included |
| Protection Features | Overload, Underload, Ground Fault, Phase Unbalance |
| Monitoring | Voltage, Current, Power, Energy, Motor Health |
| Operating Temp | -40°C to +85°C |
| Dimensions | 11cm x 30cm x 21cm |
| Weight | Approx. 10 lbs |
| Configuration Software | EnerVista 369 |
Product Introduction
The GE 369-HI-R-M-0-0-H-E is a high-performance motor protection relay from the GE Multilin 369 series, engineered to safeguard medium-voltage three-phase asynchronous and synchronous motors. It integrates comprehensive electrical protection, advanced diagnostics, and energy monitoring into a single adaptive platform that learns motor parameters to optimize protection and predict failures.This specific configuration includes the “HI” current input (1-100A direct, no CTs required), the “R” enhanced diagnostics option, and the “M” metering package. Field technicians value the built-in Rogowski coils for easy installation and the enhanced panel for viewing motor health reports and startup data logs. The relay communicates via standard RS485 Modbus RTU, making it straightforward to integrate into existing SCADA or PLC systems without additional gateway hardware.
Installation & Configuration Guide
Preparation (10 min)
- Verify the motor nameplate data (FLA, voltage, RPM) matches the relay configuration.
- Confirm control power is 24-240V AC/DC and properly fused.
- Gather EnerVista 369 software and an RS232/RS485 communication cable.
- Safety: Lock out motor power and verify zero energy before wiring.
Removal (5–10 min)
- Disconnect all field wiring from the rear terminal block; label each wire.
- Remove the DIN rail or panel mounting screws.
- Pull the relay straight out; inspect terminals for heat damage or corrosion.
- Check the Rogowski coil wiring path for sharp edges that could damage the sensor.
Installation (10 min)
- Route the Rogowski coil cables away from high-voltage conductors to prevent noise.
- Mount the relay on the DIN rail or panel; ensure secure mechanical attachment.
- Reconnect field wiring per the wiring diagram; double-check polarity on current inputs.
- Connect the RS485 communication cable using shielded twisted pair; ground the shield at one end only.
Power-On & Test (10 min)
- Apply control power; verify the display initializes without fault codes.
- Use EnerVista 369 to download the motor configuration file.
- Perform a primary injection test (if possible) to verify protection trip points.
- Verify communication with the host system by reading a live data register.
Troubleshooting Quick Reference
| Symptom | Probable Cause | Immediate Check |
|---|---|---|
| Comm Loss | Wiring or Baud Rate | Verify RS485 A/B polarity; confirm baud rate matches host. |
| False Ground Fault | Noise or Bad Coil | Check Rogowski coil routing; inspect for damaged insulation. |
| Blank Display | No Control Power | Measure 24-240V at relay terminals; check internal fuse. |
| Overload Trip | Motor Issue or Config | Check actual motor current; verify FLA setting in relay. |
| CT Open Alarm | Loose Connection | Tighten Rogowski coil connectors; verify loop continuity. |
| Config Won’t Save | Memory Fault | Perform factory reset and reload config via EnerVista. |
Dimensions, Mounting & Wiring Notes
- Form Factor: 11cm x 30cm x 21cm; designed for panel or DIN rail mounting.
- Current Input: HI version uses built-in Rogowski coils; no external CTs needed for 1-100A range.
- Wiring Note: Keep Rogowski coil leads away from VFD output cables; minimum 12-inch separation recommended.
- Grounding: Relay chassis must be solidly grounded; poor grounding causes erratic measurements and comm errors.
FAQ
Can I use this relay with a 200A motor?
No. The “HI” version is rated for 1-100A direct input. For 200A, you need the “LO” version with external CTs or a different model. Using it beyond 100A will saturate the Rogowski coils and cause false trips.Is the “M” option really necessary?
If you need to monitor power factor, kWh, or motor efficiency, yes. The base model only provides protection. The “M” package adds three programmable analog outputs and full electrical metering, which is invaluable for energy audits and predictive maintenance.My relay keeps tripping on phase unbalance, but the motor sounds fine.
Check the voltage unbalance at the motor terminals. Even 2% voltage unbalance can cause significant current unbalance. Also, verify the unbalance trip threshold in the relay; the default may be too sensitive for your application.Can I hot-swap this relay during maintenance?
No. The 369 requires control power to maintain its configuration and communication state. Always schedule a shutdown window. The “R” enhanced diagnostics option stores motor health data in non-volatile memory, so data won’t be lost during a planned outage.Do you test the Rogowski coils before shipping?
Yes. We perform a primary injection test on every relay, verifying the coil output accuracy across the 1-100A range. We also check the RS485 communication under load to ensure no data corruption. Each unit ships with a test report.Is this compatible with the older 369-HI-R-0-0-0?
Mechanically, yes. Electrically, the “M” and “H” options add functionality. You can replace a base model with this one, but you must reconfigure the metering and enhanced diagnostic settings via EnerVista. The wiring remains identical.My display shows “Comm Fail” but the wiring is correct.
Check the termination resistor. RS485 networks require a 120-ohm termination resistor at each end of the bus. If this relay is at the end of the line and the resistor is missing or failed, you’ll get intermittent comm failures. Also, verify no other device is pulling the bus voltage out of range.
