Description
The GE Multilin 369 is a high-performance microprocessor-based relay engineered for the complete protection, metering, and diagnostics of medium and large AC induction motors. It safeguards critical industrial assets against thermal stress, electrical faults, and mechanical anomalies to ensure continuous, reliable operation.
📊 Power Supply: 90-300V DC / 70-265V AC
📏 Dimensions: 267 mm x 203 mm x 178 mm
⚖️ Weight: Approximately 3.2 kg
🌍 Country of Origin: United States / Canada
⚡ Rated Frequency: 50 Hz / 60 Hz
🌡️ Operating Temperature: -40°C to +60°C
🔌 Communication Ports: Dual RS485, Front Optical Port, Optional Ethernet
🎛️ Digital Inputs/Outputs: 5 Digital Inputs, 4 Form-C Relay Outputs
🛠️ Mounting Type: Semi-flush Panel Mount / Surface Mount
🛡️ Enclosure Protection: IP52 (Front Display Panel)
📘 Product User Manual & Operating Instructions
Mechanical Installation: Insert the relay into the prepared switchgear panel cutout and fasten securely using the provided mounting hardware. Verify that ventilation paths around the enclosure are unobstructed.
Electrical Wiring: Connect power supply lines, current transformers, and voltage inputs precisely to the designated rear terminal blocks following the manufacturer wiring guidelines. Ensure all grounding connections are secure.
Software Configuration: Establish communication via the front optical interface or rear serial port using EnerVista 369 software. Program motor parameters, thermal curves, protection thresholds, and alarm configurations.
Operational Testing: Execute comprehensive secondary injection tests to validate protection trip logic, meter accuracy, and communication links with the plant control system prior to motor startup.
❓ Frequently Asked Questions (Q&A)
❓ Question 1: What distinguishes the 369-HI-R-M-0-0 variant from base models?
💡 Answer: The specific ordering code configuration denotes high-range universal control power, redundant or enhanced communication options, and standard conformal coating suited for harsh industrial environments.
❓ Question 2: Can the relay monitor motor bearing temperatures?
💡 Answer: Yes, it includes RTD inputs for continuous thermal monitoring of stator windings, bearings, and ambient temperature.
❓ Question 3: How are fault waveforms analyzed after a trip?
💡 Answer: The unit stores pre-fault and post-fault disturbance data that can be downloaded and analyzed using EnerVista software for root-cause troubleshooting.
✨ Recommended GE Multilin Series and Models
- GE Multilin 469 Motor Management Relay
- GE Multilin 339 Motor Protection System
- GE Multilin 750 / 760 Feeder Management Relay
- GE Multilin SR745 Transformer Protection Relay
- GE Multilin 845 Transformer Protection System
- GE Multilin 850 Feeder Protection System
- GE Multilin F650 Feeder Protection and Control System
- GE Multilin M650 Motor Protection System
- GE Multilin G60 Generator Protection System
- GE Multilin T60 Transformer Protection System
