CAT Titan 250 Manual De Usuario

Turbomachinery Package Specification 

250 Generator Set 

For generator control and monitoring, the Turbotronic 4 control system incorporates a 
Rockwell Automation/Allen-Bradley combination generator control module (CGCM). The 
CGCM provides generator control, protection, and monitoring. Three excitation control 
modes are available: 

•  Automatic voltage regulation (AVR) - A constant generator output voltage is 

maintained 

•  Power factor (PF) control - A constant power factor is maintained when operating 

in parallel with a large power source 

•  Reactive power control - A constant reactive load is maintained when operating 

in parallel with a large power source 

The following excitation control features are available: 

•  Under frequency limiting 
•  Over and under excitation limiting 
•  Reactive droop compensation 
•  Cross-current compensation 
•  Line-drop compensation 

Protection features for the driver and driven equipment include: 

•  Field current limit 
•  Generator overcurrent 
•  Generator overvoltage 
•  Generator undervoltage 
•  Loss of excitation current  
•  Loss of operating power 
•  Loss of sensing 
•  Over excitation voltage 
•  Overfrequency 
•  Underfrequency 
•  Phase rotation error 
•  Reverse power 
•  Reverse volt amp reactive (VAR) 
•  Exciter (rotating) diode monitor 

The protection features provided typically do not meet the requirements of power utility 
companies for the general protection of power distribution systems. This can only be 
done through the use of appropriately certified protective relay components with settings 
approved by qualified personnel based on a comprehensive analysis of the complete 
system. 

© 2008 Solar Turbines Incorporated. All rights reserved. 

TPS250GS/908 - Preliminary 

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