GE 469-P1-HI-A20-E – Motor Management Relay (GE Multilin 469 Series)

Technical Specifications

• Manufacturer: GE Multilin (GE Digital Energy)
• Model: 469-P1-HI-A20-E
• Series: 469 Multilin Motor Management Relay
• Motor Compatibility: Medium to large three-phase motors
• Phase CT Inputs: 1 A phase CT secondaries (P1)
• Control Power (HI): 90–300 VDC / 70–265 VAC, 48–62 Hz
• Analog Outputs (A20): 4 channels of 4–20 mA analog outputs
• Digital Inputs: 9 opto-isolated digital inputs
• Relay Output Contacts: 2 Form C (DPDT), rated 10 A @ 120 VAC / 28 VDC
• Display: Enhanced large LCD with backlight
• Communication: RS485/RS232, Modbus RTU protocol
• Operating Temperature: -40°C to +60°C (-40°F to 140°F)
• Storage Temperature: -40°C to +80°C (-40°F to 176°F)
• Relative Humidity: 5%–95% (non-condensing) @ 55°C
• IP Rating: IP40 (front panel), IP20 (rear terminals)
• Dimensions (L×W×H): 114 mm × 114 mm × 82 mm
• Weight: 1.0 kg (unit only); 1.5 kg (shipping weight)
• Certifications: CE, UL, CSA, IEC 60255 (industrial safety and EMC compliance)

Key Features

1. Comprehensive Motor Protection
   • Overload & Thermal Protection: Dual overload curves with thermal memory, accurate thermal modeling to prevent motor overheating.
   • Electrical Fault Protection: Short-circuit, ground fault, overvoltage, undervoltage, phase unbalance, and stall/locked-rotor protection.
   • Mechanical & Process Protection: Underload, loss of phase, and reverse power protection for abnormal operating conditions.
2. Precision Real-Time Monitoring & Measurement
   • Simultaneously monitors three-phase current, voltage, power, power factor, frequency, and motor winding temperature (via RTD inputs).
   • Enhanced LCD display provides clear, real-time data readouts, fault event logging, and parameter programming interface.
   • 4–20 mA analog outputs transmit key operational parameters to external DCS or SCADA systems.
3. Flexible Communication & System Integration
   • Supports Modbus RTU communication via RS485/RS232, enabling seamless integration with PLCs, DCS, and HMI systems.
   • Enables remote monitoring, parameter configuration, and fault diagnostics via EnerVista 469 Setup software.
   • 9 opto-isolated digital inputs and 2 relay outputs support flexible control logic and alarm interlocking.
4. Rugged Industrial-Grade Design
   • Conformal coating for harsh chemical and humid environments, enhancing resistance to corrosion and moisture.
   • Wide operating temperature range (-40°C to +60°C) ensures reliable performance in extreme industrial conditions.
   • Compact panel-mount form factor with draw-out chassis for easy installation, maintenance, and replacement.
   • High immunity to electromagnetic interference (EMI) and electrical noise, compliant with industrial EMC standards.
5. Advanced Fault Diagnostics & Maintenance
   • Captures and stores fault event records with time stamps, including fault type, magnitude, and duration, for root-cause analysis.
   • Provides predictive maintenance alerts based on thermal stress and operating hours, reducing unplanned downtime.
   • User-adjustable trip and reset time delays (0.01–99.99 seconds) for precise coordination with upstream and downstream protection devices.

Application Scenarios

• Power Generation
  • Thermal Power Plants: Protects large induction motors for fans, pumps, compressors, and coal conveyors.
  • Hydroelectric Power Plants: Manages motor-driven water pumps, gate operators, and auxiliary equipment.
• Oil & Gas Industry
  • Refineries & Petrochemical Plants: Safeguards motors for pumps, compressors, mixers, and distillation column drives.
  • Offshore Platforms & Pipelines: Protects critical motors in harsh, corrosive offshore environments.
• Process Industries
  • Chemical & Pharmaceutical Plants: Ensures reliable operation of motors for reactors, agitators, and material handling systems.
  • Mining & Metals: Protects heavy-duty motors for crushers, conveyors, mills, and hoists in mining and steel mills.
  • Water & Wastewater Treatment: Manages motors for pumps, blowers, and aerators in treatment facilities.
• Industrial Automation & Manufacturing
  • Automotive & General Manufacturing: Protects motors for production lines, machine tools, and material handling equipment.
  • HVAC & Building Services: Manages large motors for fans, chillers, and pumps in commercial and industrial buildings。