CAT Titan 250 - Manual (Page 45)

Turbomachinery Package Specification Titan 250 Generator Set
Figure 20. Typical Generator Metering Panel
10.2.7 Generator Vibration and Temperature Monitoring
X and Y proximity probes are mounted in the generator exciter and driven-end bearings.
These probes are monitored continuously by the control system. Alarm and shutdown
levels are set to protect the generator from excessive vibration levels
Resistance temperature devices (RTDs) are mounted in the generator exciter and driven
end bearings. Two RTDs are also imbedded in each of the three stator-winding phases.
One RTD is connected to the control system and the other is provided as a spare. Alarm
and shutdown levels are set to protect the generator from excessive temperature levels.
10.2.8 Redundant Combined Generator Control Module (Optional)
A second CGCM can be provided to function as a hot backup to the primary CGCM. The
system is configured for automatic transfer to the second CGCM in the event the primary
CGCM fails. All control, protection, and monitoring features of the primary CGCM are
duplicated in the second CGCM. Control can also be manually transferred between the
CGCMs.
Table 8. Generator Specifications
Voltage Regulation
Voltage Regulator Solid State
Phase Sensing Three Phase (Standard)
Single Phase Sensing (Optional)
Voltage Adjustment Range ±10% With a Voltage Resolution of 0.1%
Steady-State Voltage Regulation 0.25% From No Load to Rated kVA
Reactive Load Sharing Within 5% of Nameplate Rating
Cross-Current Compensation Optional
Voltage Drift See Note (a)
Generator Breaker Synchronization
Generator Voltage To Close Breaker, Generator Voltage Must be
Within ± 1.0 Percent of Bus Voltage
Generator Phase To Close Breaker, Generator Phase Must be Within
± 10 Degrees of Bus Phase
Generator Frequency To Close Breaker, Generator Frequency Must Be
Within ± 0.01 Hz of bus frequency
Generator Ready to Load Twenty seconds after generator set attains 90
percent speed
Notes
:
(a) The change in voltage will not exceed 1.0% over a 30-minute period when the generator is
operating at rated voltage, power factor of 0.8 to 1.0, and with a constant load between no
load and full rated load.
© 2008 Solar Turbines Incorporated. All rights reserved. TPS250GS/908 - Preliminary
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