GE469-P1-HI-A20-T-H Motor Management Relay Product Description

I. Product Introduction

GE469-P1-HI-A20-T-H is a high-performance microprocessor-based motor management relay from General Electric (GE), specifically designed for medium and high voltage as well as critical industrial applications. It integrates comprehensive protection, precise monitoring, flexible control, and intelligent communication functions, and can operate independently or be integrated into an automation system. It provides full lifecycle protection and operation support for industrial motors and is widely used in petrochemicals, power, mining, water treatment, and other fields.

II. Basic Information

Model: GE469-P1-HI-A20-T-H

Brand: General Electric (GE), affiliated with GE Digital Energy

Series: Multilin 469 Motor Management Relay Series

Type: Multi-function Motor Protection and Management Device

Target Application: Medium-sized and large AC motors (three-phase asynchronous motors, synchronous motors, etc.)

Installation Method: Standard DIN rail installation or panel installation

Protection Grade: IP20 (dust-proof, finger-proof)

Certifications: CE, UL, CSA, IEC 60255, etc. industrial certifications

Environmental Parameters: Operating temperature - 40°C to + 70°C, storage temperature - 40°C to + 85°C, relative humidity 5%–95% (no condensation)

Size: Approximately 200mm×156mm×101mm

Weight: Approximately 4.5kg

III. Electrical Specifications

Input Parameters

Working Power Supply: 70–265 VAC or 90–230 VDC, 50/60Hz adaptive

Current Input: 4–20A (compatible with CT secondary side), measurement accuracy ±1%

Voltage Input: 0–600V AC (compatible with PT secondary side), supports phase voltage, line voltage measurement

Temperature Input: Multiple RTD (platinum resistance) input, monitors motor stator, bearing temperature

Digital Input: Multiple programmable dry contact inputs, receives external start/stop, interlock signals

Output Parameters

Relay Output: 6 programmable relay contacts (normally open / normally closed), used for tripping, alarming, controlling contactors / circuit breakers

Analog Output: 4 programmable 4–20mA analog output, uploads parameters such as current, voltage, temperature to the upper computer

Communication Interface: Standard RS232/RS485, supports Modbus RTU, Profibus-DP protocols, optional Ethernet module

IV. Core Protection Functions

1. Overload Protection

Adaptive thermal model algorithm is used to monitor motor current and temperature in real time, simulates the thermal accumulation process of the motor, has inverse-time characteristics, avoids long-term overheating and burnout of the motor; supports dual setting value storage, can quickly switch different working condition protection parameters.

2. Short Circuit Protection

Instantaneous / short delay overcurrent protection, detects severe short circuit faults, action time ≤ 50ms, quickly cuts off power supply, prevents motor winding burnout and expansion of busbar faults.

3. Ground Fault Protection

Highly sensitive ground fault detection, can detect leakage faults as low as 5% of the rated current, compatible with direct grounding, resistance grounding systems, avoids personal electric shock and equipment insulation damage.

4. Stall / Overspeed Protection

When the motor starts with stall or runs at overspeed, quickly detects abnormal increase in current, timely trips for protection, prevents rotor jamming resulting in mechanical and electrical damage.

5. Voltage / Frequency Abnormal Protection

Overvoltage, undervoltage, undervoltage, phase sequence error, voltage imbalance, frequency abnormality (overfrequency / underfrequency) protection, avoids insulation aging, abnormal speed, vibration intensification and other faults of the motor due to power supply quality problems. 6. Temperature Protection

Real-time monitoring of the stator and bearing temperatures of the motor by RTD. When the temperature exceeds the limit, an alarm or trip occurs to prevent the motor from overheating and damage. Temperature thresholds can be programmed.

7. Other Protection

Unbalanced current, phase failure, reverse power, harmonic over-limit protection, covering all abnormal working conditions of the motor.

V. Monitoring and Control Functions

1. Operating Parameter Monitoring

Real-time monitoring of parameters such as three-phase current, voltage, power, power factor, frequency, temperature, running time, and start-up times. Measurement accuracy ±1%.

2. Power Quality Analysis

Built-in harmonic analysis function, monitoring of voltage/current harmonic distortion rate, supporting harmonic over-limit alarm, suitable for non-linear load conditions such as inverters and soft starters.

3. Events and Fault Records

Stores up to hundreds of event records (faults, alarms, operations), with timestamps, facilitating troubleshooting, fault causes, action times, and running parameters, making it convenient for operation analysis and equipment diagnosis.

4. Motor Control

Supports local/remote start/stop control, forward/reverse interlock, soft start coordination control, fault automatic reset (programmable), suitable for various motor control logic.

5. Dual Setpoint Switching

Built-in two independent protection parameters that can be quickly switched through external signals or communication instructions, suitable for motor no-load/lit, continuous/intermittent operation and other different modes.

VI. Human-Machine Interface and Configuration

1. Display and Operation

Equipped with a high-resolution LCD display and buttons, allowing on-site viewing of operating parameters, fault information, protection set values, supporting on-site parameter configuration and function debugging.

2. Configuration Method

Local Configuration: Parameter settings through panel buttons and LCD

Remote Configuration: Connecting to the upper computer software through communication interface to achieve remote parameter configuration, firmware upgrade, data monitoring

VII. Communication and System Integration

Supports Modbus RTU, Profibus-DP industrial communication protocols, can be seamlessly integrated with PLC, SCADA, DCS systems, enabling remote monitoring, parameter modification, fault upload, data recording, suitable for large-scale automation control system architectures.

VIII. Application Scenarios

Petrochemical Industry: Key motors such as pumps, compressors, fans, mixers

Electric Power Industry: Auxiliary motor of power plants, cooling tower fans, water supply pump motors protection

Mining Industry: Conveyor belts, crushers, elevators, etc., heavy-load motor protection

Water Treatment: Water pumps, aeration fans, mixing machines motor protection

Industrial Manufacturing: Machine tools, injection molding machines, textile machinery, etc., equipment motor protection