Caterpillar TAURUS 70 - Manual (Page 24)

Turbomachinery Package Specification Taurus 70 Compressor Set and Mechanical Drive
Figure 9. Typical Direct-Drive AC Starter Motor and Variable Frequency Drive
M
GAS
TURBINE
VARIABLE
FREQUENCY
DRIVE
RADIO
INTERFERENCE
FILTER
AC POWER
CONNECTION
CLUTCH
ASSEMBLY AC
MOTOR
LINE REACTOR
Figure 10. Typical Direct-Drive AC Start System
7.2.4 Power Wiring
The start system (Figure 10) requires customer-furnished, three-phase AC input.
Additional three-phase AC power wiring is required to connect the VFD to the starter
motor. A start contactor is not required for VFD operation. A customer-furnished fused
disconnect at the VFD input is recommended. Optional motor space heater wiring is
available.
Table 6. Direct Drive AC Start System Specifications
Variable Frequency Drive
Optional Voltage Input Ranges 380 to 460 VAC, (48 to 62 Hz)
Minimum Input Current
- 380 to 460 VAC Input 105 amps
Voltage Output Range 0 to 460 VAC, (0 to 240 Hz)
Maximum Line Distribution Capacity 1000 kVa
Maximum Fault Current Capacity 30 000 amps, See Note (a)
Power Factor 0.96
Efficiency 98%
© 2009 Solar Turbines Incorporated. All rights reserved. TPS70CSMD/309
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