CAT Titan 250 - Manual (Page 58)

Turbomachinery Package Specification Titan 250 Generator Set
14 Accessory Equipment
14.1 DC Power Supply and Battery Charger System
This system provides 120 VDC power for the following devices:
• The electric actuators that drive the fuel valves, bleed valve and variable guide
vanes.
• The 120 to 24 volt DC-to-DC converter in the control system that provides the 24
VDC control power.
• The DC backup lube oil pump and DC back-up engine turning gear motors.
• The DC backup lube oil scavenging pump motor (when applicable for offshore
installations).
The system includes a 3-phase charger (Figure 26) and a set of batteries configured for
120VDC output, mounted on a freestanding rack. The batteries are sized to provide
sufficient power to allow the package to shut down and cool down in an orderly manner in
the event of loss of external AC power. The system is designed for indoor installation in a
nonhazardous area. The batteries are shipped fully charged and ready for use. Two
battery types are available:
• Valve-regulated, sealed gas-recombination, lead-acid
• Nickel Cadmium
Figure 26. Typical Battery Charger
14.2 Turbine Cleaning System
The optional turbine compressor cleaning system (Figure 27) facilitates periodic cleaning
of the turbine compressor. The cleaning system is designed for use in salt-laden or dusty
environments or where compressor contamination from hydrocarbon vapors is possible.
The turbine compressor cleaning system is composed of the following systems:
• On-crank cleaning system
• On-line cleaning system
Both cleaning systems are independent of each other and include a separate distribution
manifold with pressure atomizing spray nozzles in the engine air inlet collector, onskid
piping, strainer, and solenoid shutoff valves to deliver water or approved cleaning fluid to
the manifold. Both systems require an external source of clean-filtered air to pressurize
the cleaning solutions.
© 2008 Solar Turbines Incorporated. All rights reserved. TPS250GS/908 - Preliminary
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