Description
Key Technical Specifications
| Parameter | Value |
|---|---|
| Product Model | 369-HI-R-0-0-0-0-E |
| Manufacturer | GE Multilin |
| Product Series | 369 Motor Management Relay |
| Product Type | Motor Protection Relay |
| Control Power | 50–300 VDC / 60–265 VAC |
| RTD Inputs | 12 built-in RTD inputs |
| Metering Option | Not included |
| Backspin Detection | Not included |
| Fiber Optic Port | Not included |
| Communication Option | No optional protocol interface |
| Diagnostic Level | Enhanced diagnostics |
| Display | Enhanced faceplate with motor status indicators |
| Protection Functions | Overload, phase loss, ground fault, jam, stall, thermal model |
| Mounting | Panel/rack installation |
| Application | Medium AC motor protection and monitoring |
Application Scenarios & Pain Points
A motor protection relay sits between the electrical supply system and the rotating asset. When it fails or is incorrectly configured, operators may see nuisance trips, unexpected shutdowns, or missing protection data during a critical event.
Typical applications:
- Oil & Gas Facilities: Protects motors driving pumps, compressors, and process equipment where unplanned stops can interrupt production.
- Water Treatment Plants: Used for large pump motors requiring overload, thermal, and phase protection.
- Mining Operations: Applied on conveyors, crushers, and ventilation motors exposed to heavy starting loads.
- Manufacturing Plants: Supports MCC motor feeders where temperature monitoring through RTDs is required.
Field note: A processing facility experienced repeated motor trips during high-load operation. Electrical checks found no supply issue, but relay records showed increasing thermal accumulation. After reviewing the 369 settings and replacing an aging unit, the motor protection system returned to normal operation.
369-HI-R-0-0-0-0-E
Related Products
- GE Multilin 369-HI-0-0-0-0-E — Similar 369 relay configuration without the optional 12 RTD input package. Used where temperature monitoring is not required.
- GE Multilin 369-HI-R-0-0-0-E — Related enhanced relay configuration with RTD capability but different option coding. Suitable when project specifications require another feature arrangement.
- GE Multilin 369-LO-R-0-0-0-0-E — Low-voltage control power version of the 369 relay. Selected for systems using lower auxiliary voltage supplies.
- GE Multilin 339 Relay — Motor protection relay family designed for similar motor management applications with different hardware architecture.
- GE Multilin MM300 Motor Manager — Modular motor management platform for MCC applications requiring additional I/O flexibility.
- GE Multilin SR469 — Motor protection relay designed for larger motors and generator-related applications.
- GE Multilin 745 Transformer Protection Relay — Different protection family used for transformer applications rather than motors.
- GE Multilin EnerVista 369 Setup Software — Configuration and diagnostic software used for relay programming, monitoring, and maintenance.
The Engineer’s Guide: Field Pitfalls to Avoid
⚠️ Incorrect Control Power Selection
The HI version requires the correct auxiliary supply range. Applying the wrong voltage can damage the relay or prevent startup.
How to avoid: Confirm whether the existing unit uses HI or LO control power before replacement.
⚠️ Lost Protection Settings After Replacement
A new relay may operate with default values that do not match the motor application.
How to avoid: Upload the existing setpoint file before removing the original relay and verify all protection parameters afterward.
⚠️ RTD Wiring Errors
The R option adds 12 RTD inputs, but incorrect sensor wiring can create false temperature alarms.
How to avoid: Document RTD channel assignments, sensor type, and terminal wiring before installation.
Frequently Asked Questions (FAQ)
What is the main function of the GE Multilin 369-HI-R-0-0-0-0-E?
The relay provides motor protection, monitoring, and diagnostic functions for industrial AC motors, including thermal overload protection, fault detection, and RTD temperature monitoring.
What does the “HI-R-E” designation mean in the model number?
The ordering code identifies the relay configuration:
- HI = High control power range
- R = 12 built-in RTD inputs
- E = Enhanced diagnostics package
Does the 369-HI-R-0-0-0-0-E include communication options?
This specific configuration does not include optional protocol interface selections. Communication availability depends on the installed hardware option and system configuration.
Can this relay replace another GE Multilin 369 model?
Only after verifying:
- Control power type
- RTD requirements
- Firmware revision
- Protection settings
- Panel wiring
- Existing option codes
Why does a motor trip after installing a replacement 369 relay?
Common causes include:
- Default settings not matching the motor
- Incorrect CT ratio configuration
- Wrong overload parameters
- RTD wiring mistakes
- Incorrect phase sequence settings
What should be checked before purchasing a 369-HI-R-0-0-0-0-E?
Recommended checks:
- Complete model string
- Motor full-load current
- CT ratio
- RTD quantity and type
- Existing relay settings backup
- Auxiliary control voltage
Is a refurbished GE Multilin 369 suitable for motor protection service?
A tested refurbished unit can be suitable when it passes power-up testing, display verification, input/output checks, RTD simulation tests, and configuration compatibility review before installation.
