Technical Specifications
- Manufacturer: General Electric (GE Multilin)
- Model: 469-P5-HI-A20-E SR469-CASE
- Product Series: GE Multilin 469 Motor Protection Series
- Control Power Supply: 90–300 VDC / 70–265 VAC, frequency 48–62 Hz
- Phase CT Input Rating: 5 A secondary current
- RTD Temperature Inputs: 6-channel 3-wire RTD, compatible with 100Ω Pt, 100Ω Ni, 120Ω Ni, 10Ω Cu sensors
- Analog Outputs: 4 channels of 4–20 mA isolated analog signals
- Digital Inputs: 9 channels opto-isolated switching inputs
- Relay Output Contacts: 8 groups Form-C alarm & trip relay contacts
- Power Consumption: Typical 25 VA, maximum 45 VA
- Display: Large backlit LCD screen, clear local parameter and fault status display
- Operating Temperature: -40°C to +60°C
- Storage Temperature: -40°C to +80°C
- Relative Humidity: 5%–95%, non-condensing
- Enclosure Structure: SR469 draw-out plug-in case, panel embedded installation
- Communication Interfaces: RS232 front port, RS485; supports Modbus RTU protocol
- Safety Certifications: UL, CSA, CE standard industrial safety & EMC certification
Key Features
Full-Range Motor Fault Protection
Covers overload thermal protection, locked rotor protection, phase loss/unbalance protection, overcurrent instantaneous protection, ground fault protection, overvoltage & undervoltage protection, bearing overtemperature protection. All protection thresholds support flexible parameter setting matching different motor rated characteristics.
Precision Temperature & Operation Monitoring
Multi-channel RTD collects motor winding and bearing temperature in real time, accurately locates local overheating points. Continuously monitors three-phase current, voltage, power, frequency and motor starting/stopping status, completes full electrical quantity metering and statistical recording.
Intelligent Logic & Startup Control
Built-in dual protection setting groups, automatically switch protection curves during motor startup and stable operation. Realizes automatic motor start-stop logic interlock, fault trip locking and sequential control coordination.
Draw-Out Easy Maintenance Design
Matching dedicated SR469 plug-in protective shell, the main unit can be pulled out and replaced directly without cutting primary circuit power supply. Greatly shortens maintenance downtime and improves on-site operation efficiency.
Powerful Fault Diagnosis & Data Logging
Supports fault waveform recording, event sequence recording and historical alarm storage. Equipped with EnerVista 469 professional configuration software, realizes rapid fault analysis, parameter debugging and remote predictive maintenance.
Strong Anti-Interference & Environmental Adaptability
Full electrical isolation between power supply, input and output signals. Resists strong industrial electromagnetic interference, adapts wide temperature and humid dust environments, stable long-term continuous operation.
Application Scenarios
Power Generation Industry
Turbine auxiliary motor protection, boiler feed pump, circulating water pump, fan motor monitoring and fault protection in thermal power, combined cycle and hydropower stations.
Petroleum & Petrochemical Industry
Protection and operation management of large drive motors for refinery compressors, oil pipeline pumps, LNG equipment and reactor circulating machinery.
Mining & Bulk Conveying
Heavy-duty belt conveyor motors, hoist motors, crusher main motors, realizing overload and abnormal condition reliable protection in harsh mine environments.
Water Treatment & Municipal Engineering
High-power water supply and drainage pump motors, sewage treatment blower motors, stable operation guarantee of long-distance circulating pump systems.
General Manufacturing & Process Industry
Steel plant rolling mill motors, paper mill load motors, chemical reaction equipment drive motors, matching soft starters and high-voltage frequency conversion motor integrated protection control.
Industrial Distributed Control System
Seamless integration with GE DCS, PLC and plant SCADA systems, realizes centralized remote monitoring, unified alarm management and motor group intelligent coordinated control.
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