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Phone：+86 15383419322Description
The GE Multilin 369-HI-0-M-0-0 is a compact, multifunctional motor protection relay engineered to safeguard critical electric motors against electrical and thermal faults that lead to premature failure. Designed for motors ranging from hundreds of horsepower to multi-megawatt industrial drives, the 369 combines IEC 60255-compliant protection algorithms with intuitive configuration and robust communication—making it ideal for pump stations, HVAC systems, compressors, conveyors, and fan applications.
This specific variant (HI-0-M-0-0) features high-impedance current inputs (optimized for standard 1 A or 5 A CTs with minimal burden), Modbus RTU serial communication over RS-485, and no optional I/O or Ethernet—positioning it as a streamlined, cost-efficient solution for basic yet reliable motor management. Despite its compact size, the 369-HI-0-M-0-0 delivers advanced functions such as thermal overload modeling, phase unbalance detection, jam/stall protection, undercurrent monitoring, and ground fault detection (via residual or core-balance CT).
A standout feature is its adaptive thermal model, which continuously calculates motor heating and cooling based on real-time load—not just fixed time-current curves—preventing nuisance trips while ensuring true thermal safety. The relay also supports RTD (Resistance Temperature Detector) and PTC thermistor inputs (via optional modules, though not included in this base model), enabling direct winding temperature monitoring when upgraded.
Programmed via front-panel keypad or GE’s Enervista 369 Setup Software, the 369-HI-0-M-0-0 stores event logs, oscillography (waveform capture), and metering data (kW, kVAR, PF, etc.), supporting predictive maintenance and root-cause analysis after trips.
GE 369-HI-0-M-0-0
Technical Specifications
| Parameter Name | Parameter Value |
| Product Model | 369-HI-0-M-0-0 |
| Manufacturer | GE Grid Solutions (Multilin) |
| Product Type | Motor Protection & Management Relay |
| Current Inputs | 3-phase + ground (residual); HI type (1 A / 5 A selectable) |
| Voltage Inputs | None (voltage-less model – operates on current only) |
| Communication | Modbus RTU over RS-485 (2-wire) |
| Optional I/O | None (base model) |
| Protection Functions | Thermal overload, phase loss/unbalance, jam/stall, undercurrent, ground fault, start inhibit, restart timer |
| Thermal Model | Adaptive thermal capacity utilization (TCU) with cooling curve |
| Metering | Ia, Ib, Ic, Ig, kW, kVAR, PF, Hz, % Load |
| Event Recording | 1024 events + 8 oscillography records (pre/post fault) |
| Mounting | Panel mount or DIN rail (with optional kit) |
| Operating Temperature | -20°C to +70°C |
| Standards | IEC 60255, IEEE C37.90, UL 508, CSA |
| Power Supply | 24–250 V AC/DC (universal) |
Main Features and Advantages
✅ True thermal protection: Unlike simple bimetallic or fixed-time relays, the 369 uses a dynamic thermal model that mirrors actual motor heating—reducing false trips during momentary overloads while preventing burnout during sustained stress.
✅ Ground fault sensitivity: Detects ground faults down to 0.05 A (with external CBCT), crucial for protecting expensive motors in high-resistance grounded systems.
✅ Modbus integration: Easily connects to SCADA, PLCs, or HMIs via Modbus RTU, enabling remote monitoring of motor status, alarms, and energy usage without proprietary gateways.
✅ Compact & rugged: Fits in tight panels; operates reliably in high-vibration or dusty environments common in mining, pulp & paper, and water treatment.
✅ Cost-effective reliability: Offers 80% of the functionality of premium relays (like the 469) at half the price—ideal for fleets of auxiliary motors where budget matters.
✅ Fast troubleshooting: Onboard oscillography captures current waveforms before/after a trip, helping engineers distinguish between mechanical jams, electrical faults, or control errors.
Application Field
The 369-HI-0-M-0-0 is extensively used in:
- Water & wastewater plants: Protecting large pumps against dry-run (undercurrent), phase loss, and thermal overload.
- Oil & gas facilities: Safeguarding compressor and injection pump motors in remote or hazardous locations.
- Mining & minerals: Monitoring conveyor and crusher motors subject to frequent starts and material jams.
- HVAC systems: Preventing chiller or fan motor damage due to belt slippage or bearing failure (detected via undercurrent).
- Power generation: Backup protection for auxiliary motors in turbine halls and switchyards.
Its voltage-less design makes it especially suitable for low-voltage motor control centers (MCCs) where voltage wiring is impractical or unnecessary.
GE 369-HI-0-M-0-0
Related Products
- 369-V-0-M-0-0: Adds 3-phase voltage inputs for undervoltage, overvoltage, and power factor functions
- 369-HI-1-M-0-0: Includes 4 digital inputs + 2 form-C outputs for enhanced control
- 469-P5-HI-A2E: Higher-end Multilin relay with Ethernet, waveform capture, and arc-flash detection
- 779: Next-generation motor protection platform with IEC 61850 and advanced analytics
- Enervista 369 Setup: Free GE software for configuration, testing, and firmware updates
