Product Overview

The GE Fanuc 469-P1-HI-A20 is a sophisticated digital relay belonging to the renowned Multilin™ 469 series. It is engineered to provide comprehensive protection, control, and monitoring for medium and large-sized industrial motors. This relay integrates advanced thermal modeling with precise metering capabilities to ensure the longevity and reliability of critical motor assets.

Designed for versatility, the 469-P1-HI-A20 features a robust drawout case design, allowing for rapid replacement and maintenance without disturbing field wiring. It combines high-speed protection algorithms with extensive communication options, making it a central component in modern industrial automation and power management systems.

Key Features & Benefits

• Advanced Thermal Protection: Utilizes a dynamic thermal model that accounts for thermal capacity used, negative sequence current (unbalance), and RTD inputs to accurately track motor heating and cooling.

• Drawout Architecture: The unit is housed in a drawout case, facilitating easy removal and installation for maintenance or replacement, minimizing system downtime.

• High-Precision Metering: Provides accurate real-time monitoring of current, voltage, and power parameters, with four scalable 4-20 mA analog outputs for integration with external control systems.

• Comprehensive Fault Recording: Capable of storing waveform data (up to 16 cycles) during trip events, aiding in rapid fault diagnosis and root cause analysis.

• Flexible Communication: Equipped with RS232 and RS485 ports supporting open protocols (Modbus), allowing for seamless integration into SCADA and DCS networks.

• Versatile Control Power: Supports a wide range of AC and DC control power inputs, ensuring compatibility with various industrial power distribution schemes.

Technical Specifications

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Protection & Monitoring Capabilities

The 469-P1-HI-A20 offers a suite of protective functions designed to prevent motor damage:

• Thermal Overload: Mimics the motor's heating characteristics to prevent insulation failure.

• Stall & Jam Protection: Detects locked rotor conditions during start or run modes.

• Ground Fault: High-sensitivity detection for insulation breakdown.

• Phase Unbalance: Protects against negative sequence currents that cause rotor overheating.

• Short Circuit: Fast-acting trip for high-current faults.