GE 469-P1-HI-A20-T-H | Multilin 469 | Motor Management Relay

The GE 469-P1-HI-A20-T-H is a sophisticated, microprocessor-based relay designed for the comprehensive protection and management of medium and large horsepower motors. Part of the Multilin 469 series, this unit integrates high-end protection algorithms with advanced monitoring and metering. The “HI” configuration indicates a high-voltage control power supply, while the “A20” and “T” options specify enhanced analog outputs and internal clock/memory features for detailed event recording.

Product Parameters

  • Power Supply (HI): 90–300V AC / 70–250V DC

  • Phase Current Inputs (P1): 1A secondary CT (Current Transformer)

  • Ground Current Input: 1A or 5A secondary / 50:0.025 Zero Sequence

  • Analog Outputs (A20): Four 4–20mA isolated outputs

  • RTD Inputs: 12 programmable inputs (100Ω Platinum, 100Ω Nickel, 120Ω Nickel, or 10Ω Copper)

Product Specifications

  • Series: Multilin 469 Motor Management Series

  • Model Suffix: P1-HI-A20-T-H (Enhanced Hardware/Firmware Revision)

  • Protection Elements: Thermal Model (15 curves), Phase Differential, Short Circuit, Undercurrent, Ground Fault, and Stator Differential

  • Communications: RS485 (Modbus RTU), RS232 (front port), Optional Ethernet (Modbus TCP)

  • Environmental: Harsh Chemical Environment Conformal Coating (-H option)

GE Multilin Motor Management Relay 469-P1-HI-A20-T-H

Application Fields

  • Heavy Industrial Motors: Protection for high-inertia fans, large pumps, and compressors.

  • Mining & Metals: Monitoring conveyors and crushers in dusty, high-vibration environments.

  • Oil & Gas Refineries: Critical motor management for explosion-proof pump systems.

  • Power Plants: Controlling circulating water pumps and cooling tower fans.

Product Q&A

  • Q: What is the benefit of the “-H” suffix in this model?

    • A: The “-H” indicates a conformal coating on the internal circuit boards, protecting the electronics from corrosion in harsh environments like wastewater plants or chemical refineries.

  • Q: Can the 469-P1-HI-A20-T-H track motor start-up trends?

    • A: Yes, the “T” (Enhanced) version includes advanced data logging and a high-resolution “Start Report” that captures current, voltage, and acceleration time.

  • Q: Is the 1A current input (P1) interchangeable with 5A CTs?

    • A: No, the internal sensing hardware for a P1 model is calibrated specifically for 1A secondaries; using 5A CTs directly would result in incorrect metering and potential hardware damage.

Share this story:

Discover more