GE 469 MOTOR PROTECTION SYSTEM

GE 469 MOTOR PROTECTION SYSTEM

APPLICATION

Protection and Management of three phase medium and large horsepower motors and  driven equipment, including high inertia, two speed and reduced-voltage start motors.

KEY BENEFITS

• Comprehensive motor protection plus voltage dependant  overload curves, torque metering and protection, broken  rotor bar protection 

• Most advanced thermal model - Including multiple RTD  inputs for stator thermal protection  

• Minimize replacement time - Draw-out construction 

• Complete asset monitoring - Temperature, Analog I/O, full  metering including demand & energy 

• Improve uptime of auxiliary equipment - Through I/O  monitoring

• Reduce troubleshooting time and maintenance costs -  Event reports, waveform capture, data logger 

• Built in simulation functions simplify testing and  commissioning 

• Cost Effective Access to information - Through standard  RS232 & RS485 serial ports, and optional Ethernet and  DeviceNet Ports 

• Field upgradable firmware and settings 

• Optional Conformal coating for exposure to chemically  corrosive or humid environments

FEATURES

Protection and Control 

• Thermal model biased with RTD and negative  sequence current feedback  

• Start supervision and inhibit 

• Mechanical jam 

• Voltage compensated acceleration  

• Undervoltage, overvoltage  

• Underfrequency 

• Stator differential protection  

• Thermal overload 

• Overtemperature protection 

• Phase and ground overcurrent 

• Current unbalance 

• Power elements  

• Torque protection 

• Dual overload curves for 2 speed motors  

• Reduced voltage starting contro

Communications    

• Multiple Ports - 10baseT Ethernet, RS485, RS232, RS422,  DeviceNet 

• Multiple Protocols - Modbus RTU, Modbus TCP/IP, DeviceNet

Monitoring and Metering

• A, V, W, var, VA, PF, Hz, Wh, varh, demand  

• Torque, temperature (12 RTDs) 

• Event recorder  

• Oscillography & Data Logger (trending) 

• Statistical information & learned motor data

EnerVistaTM Software 

• State of the art software for configuration and  commissioning GE Multilin products 

• Document and software archiving toolset to ensure  reference material and device utilities are up-to-date 

• EnerVistaTM Integrator providing easy integration of data  in the 469 into new or existing monitoring and control  systems

Motor Thermal Model 

The primary protective function of the  469 is the thermal model with six key  elements:

• Overload Curves 

• Unbalance Biasing 

• Hot/Cold Safe Stall Ratio 

• Motor Cooling Time Constants 

• Start Inhibit and Emergency Restart 

• RTD Biasing