GE SR469-P5-HI-A20 – Multilin 469 Motor Management Relay

Description

1. Product Title

2. Product Overview

The GE SR469-P5-HI-A20 is a high‑performance, microprocessor‑based motor management relay from GE Multilin (GE Vernova), designed for comprehensive protection, monitoring, and control of medium‑voltage motors (3–15 kV). It integrates advanced thermal modeling, overcurrent/ground fault protection, and precision metering to prevent motor damage and unplanned downtime. The GE SR469-P5-HI-A20 features a draw‑out design for fast replacement and field‑upgradeable firmware, making it a robust, cost‑effective solution for industrial motor control systems.

3. Technical Specifications

• Brand: GE (General Electric Multilin / Vernova)
• Model: GE SR469-P5-HI-A20
• Warranty: One Year
• Condition: 100% New & Original
• Control Power: 70–265 VAC / 90–300 VDC, 48–62 Hz
• Phase Current Input: 5 A CT secondary (0.1–20 A measurement range)
• Voltage Input: 100 V VT secondary (0–120 V range)
• Temperature Input: 8 × RTD (PT100, −50°C to 200°C) / K‑type thermocouple
• Analog Outputs: 4 × isolated 4–20 mA
• Digital I/O: 8 × relay outputs (250 VAC/5 A); 4 × programmable inputs
• Communication: Front RS232 (9600–19200 baud); 2 × rear RS485 (Modbus RTU)
• Protection Accuracy: Current/Voltage ±0.2%; Temperature ±1°C
• Operating Temp: −20°C to +70°C (−4°F to +158°F)
• Dimensions: 217 mm × 230 mm × 250 mm (8.5 × 9.1 × 9.8 in)
• Weight: 7.3 kg (16.1 lbs)
• Certifications: CE, UL, CSA, IEC 60255

4. Key Features & Benefits

• Comprehensive Motor Protection: Integrates thermal overload, short‑circuit, ground fault, phase unbalance, and under/overvoltage protection. This safeguards motors from electrical faults and extends service life.
• High‑Precision Monitoring & Diagnostics: Provides real‑time metering (current, voltage, power, energy) and RTD‑based temperature tracking. Enables predictive maintenance and reduces unplanned downtime.
• Flexible Communication & Integration: Supports Modbus RTU via RS485 and RS232 for local programming. Seamlessly integrates with SCADA, PLC, and DCS systems for remote monitoring and control.
• Draw‑Out Construction: Hot‑swap capable with a sealed handle to prevent unauthorized removal. Minimizes maintenance time and enhances system security.

5. Application Scenarios

• Oil & Gas (Pumps/Compressors): Protects large induction/synchronous motors (100 kW–10 MW) in refineries, pipelines, and offshore platforms. Prevents damage from voltage sags, harmonics, and thermal stress.
• Power Generation (Auxiliary Motors): Deployed in thermal/hydro power plants for boiler feed pumps, fans, and conveyor motors. Ensures reliable operation of critical auxiliary equipment.
• Heavy Industry (Mining/Steel): Used in mining conveyors, steel mill rolling mills, and cement plant crushers. Withstands harsh environments (vibration, dust, temperature extremes).

6. Frequently Asked Questions (FAQ)

• Q: What is the primary function of the GE SR469-P5-HI-A20?
  • A: The GE SR469-P5-HI-A20 is a motor management relay that provides comprehensive protection, real‑time monitoring, and control for medium‑voltage industrial motors.
• Q: Is the GE SR469-P5-HI-A20 compatible with existing SCADA systems?
  • A: Yes, it features RS485/RS232 communication with Modbus RTU protocol, enabling seamless integration with standard SCADA, PLC, and DCS platforms.
    

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