Name: GE SR469-P5-HI-A20-T
Brand: GE
SKU: GE SR469-P5-HI-A20-T

GE SR469-P5-HI-A20-T

Product Overview The GE SR469-P5-HI-A20-T is a Motor Management Relay from GE Multilin (now part of ABB), designed for comprehensive protection and monitoring of medium to large horsepower motors in industrial applications. This relay combines advanced thermal protection, real-time diagnostics, and communication capabilities to ensure optimal motor performance while minimizing downtime. The “-T” suffix indicates a specific configuration variant with enhanced features for demanding industrial environments.

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Category: GE SKU: GE SR469-P5-HI-A20-T

Description

GE SR469-P5-HI-A20-T

Technical Specifications

Parameter	Specification
Product Family	SR 469 Motor Management Relay
CT Rating	5A phase CT secondaries
Control Power	90-300 VDC / 70-265 VAC @ 48-62 Hz
Analog Outputs	Four 4-20 mA outputs
RTD Inputs	Multiple RTD inputs for stator temperature monitoring
Communication	Modbus RTU/TCP, DeviceNet
Display	40-character LCD with keypad
Mounting	19-inch rack or panel mount
Dimensions	21.5 cm x 23 cm x 25 cm
Weight	7.36 kg
Ambient Temperature	-40°C to +60°C
Certifications	CE, UL, IP20
Vibration Resistance	8.0 g for 72 hours

Functional Features

Advanced Thermal Protection: Multiple RTD inputs monitor stator temperature with real-time thermal modeling to prevent overheating
S5 Thermal Model: Includes adjustable curves for cold/hot motor startup with default hot-to-cold time ratio of 16:18 (0.89)
Overload Protection: Comprehensive overload curves with adjustable settings
Phase Loss Protection: Detection and protection against single-phasing conditions
Ground Fault Protection: Integrated ground fault detection for motor winding protection
Mechanical Jam Detection: Torque monitoring with configurable response time from 0.1-10 seconds
Event Reporting: Detailed event reports with waveform capture capability
Data Logging: Continuous data logging for trend analysis and predictive maintenance
Complete Asset Monitoring: Analog I/O, temperature monitoring, and full electrical metering
Draw-out Construction: Field-upgradable design for easy maintenance and replacement

Structural Characteristics

Rugged industrial-grade enclosure with conformal coating for harsh environments
Enhanced front panel with 40-character LCD display and numeric keypad
LED indicators for motor status, output relays, and communication links
RS-232 programming port with configurable baud rates (9600-19200)
Six dry-contact output relays for tripping, alarming, and start-block functions
Sealed draw-out handle to prevent unauthorized removal
Side ventilation for proper thermal management

Working Principle The relay continuously monitors motor electrical parameters including three-phase currents, voltages, and ground current. RTD sensors embedded in the motor windings provide temperature data. The internal microprocessor executes a sophisticated thermal model that calculates motor heating based on current magnitude, unbalance, and ambient temperature. The thermal model accounts for motor cooling time constants and previous operating history. When any monitored parameter exceeds programmed thresholds, the relay initiates appropriate protective actions ranging from alarms to trip commands. The relay also captures waveform data during fault events for post-event analysis.

Installation Requirements