Introduction
The GE 469-P5-HI-A20-E is a versatile, digital motor management relay designed for comprehensive protection, control, and monitoring of medium-voltage and critical low-voltage motors. Part of GE’s Multilin 469 series, it integrates advanced protection functions, diagnostics, and communication capabilities into a robust package suitable for demanding industrial environments. Its high-resolution display and intuitive interface simplify setup and operation.
Key Features:
- Advanced Motor Protection: Thermal overload (RTD/bi-metallic modeling), locked rotor, short-circuit, ground fault, phase imbalance, under/over voltage, under/over frequency, stall, jam, loss of load.
- Monitoring & Diagnostics: Real-time monitoring of currents, voltages, power, energy, temperatures (via RTDs), status. Event recording (sequence of events – SOE) with time-stamping. Comprehensive diagnostic capabilities.
- Control Functions: Start/stop control, restart inhibit, start supervision, undervoltage restart blocking.
- Communication: Built-in Modbus RTU (RS-485) for integration into SCADA, DCS, or PLC systems.
- User Interface: High-resolution backlit LCD display with intuitive menu navigation and status LEDs.
- Robust Design: Engineered for harsh industrial environments (high EMI, temperature, humidity).
Primary Functions / Role:
- Protect: Prevent motor damage from electrical faults, thermal stress, and abnormal operating conditions.
- Control: Automate motor start/stop sequences and provide supervision.
- Monitor: Provide real-time operational data (currents, voltages, power, status, temperatures).
- Diagnose: Record events, identify developing problems, and aid in troubleshooting.
- Communicate: Integrate motor data into plant control and monitoring systems.
Typical Applications & Industries:
- Industries: Oil & Gas (Pumps, Compressors), Petrochemical/Chemical (Agitators, Conveyors), Mining (Crushers, Fans), Power Generation (Boiler Feed Pumps, ID/FD Fans), Water/Wastewater (Pumps), Pulp & Paper, Manufacturing.
- Equipment: Medium Voltage Motors (Typical), Critical Low Voltage Motors, Pumps, Fans, Compressors, Conveyors, Crushers, Mixers.
GE 469-P5-HI-A20-E Specifications Summary
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Parameter Category
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Specification
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Model Series
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GE Multilin 469 Motor Management Relay
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Phase Current Input
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5A AC Nominal (Phase CT Secondary Input Rating)
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Voltage Input
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Phase-to-Phase Voltage Sensing Inputs (Optional VT Input Module usually required)
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Ground Fault
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Dedicated Zero-Sequence CT Input (Typically 0.1A or 1A or 5A)
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Thermal Inputs
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RTD Inputs (Typically 6 or more) for direct motor winding/bearing temp monitoring
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Protection Functions
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Thermal Overload, Locked Rotor, Short-Circuit, Instantaneous Overcurrent, Ground Fault (50N/51N), Phase Imbalance, Under/Over Voltage, Under/Over Frequency, Stall/Jam, Loss of Load, RTD Overtemp, Start Supervision, Restart Inhibit
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Control Functions
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2 Form-C Output Relays (Trip, Alarm typically), Start/Stop via contact inputs, Programmable Logic (FlexLogic™)
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Communications
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Integrated: 1x RS-485 (Modbus RTU protocol). Optional: Ethernet (TCP/IP Modbus, IEC 61850), Profibus DP, DeviceNet modules available.
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Display/Interface
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High-resolution backlit LCD, Navigation pushbuttons, Status LEDs
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Auxiliary Power
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Typically Available Ranges: 24-48V DC, 48-125V DC, 110-240V AC/DC, 100-240V AC/DC (Exact options depend on suffix ordering) Check specific model datasheet
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Relay Outputs
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Multiple programmable Form-C (NO/NC) contacts – Quantity depends on model/options (e.g., Trip, Alarm, Auxiliary).
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Digital Inputs
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Multiple programmable contact inputs (e.g., Start, Stop, Reset, Remote/Local) – Quantity depends on model/options.
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Environment
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Operating Temp: -40°C to +70°C (-40°F to +158°F), High Humidity, High EMI Immunity (as per industrial standards)
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Approvals
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UL, CE, IEC, etc. (Specific certifications depend on model and market)
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Mounting
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DIN Rail Mounting
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Key Suffix Meanings
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P5: Phase CT = 5A Nominal Input. HI: Human Interface (Display & Keypad). A20: Specific hardware/software feature set level within 469 series (GE internal designation). E: Voltage Rating/Suffix (Often indicates 120V AC or universal AC/DC range – Must verify exact voltage from datasheet/model code decoder). |
Important Notes:
- Specific Voltage: The
-Esuffix usually indicates an AC/DC voltage range like 100-240V AC/DC or 110-240V AC/DC, but this is critical to confirm using the official GE model code decoder or datasheet for the exact auxiliary power requirement of the specific469-P5-HI-A20-Eunit. - Detailed Specifications: The table provides a summary. For full, precise specifications (exact number of I/O, full voltage/current ranges, accuracy, communication module details, certification listings), always consult the official GE Multilin 469 Series Product Manual and the specific model’s datasheet.
- Configuration: Extensive configuration is possible via the front panel or software tools (GE EnerVista 469 Setup).
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