Technical CATERPILLAR – 1000 kVA Page
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Description UTILITY POWER MODULE
Revision 1.0 1 May 2006
Synchronisation pulse is given if
• Frequency is within given window
• Phase difference is corresponding the given circuit breaker time delay
Power organiser will send raise and lower pulses to the engine control panel in order to
change generator frequency. Because both generator and mains voltage are available,
engine control will be able to match generator voltage with busbar voltage
Available variables at 4 wire WYE:
Generator side
Frequency
Measured on any available line voltage
Phase voltages
V L1-L2
V L2-L3
V L3-L1
V L-L average
Current
I L1
I L2
I L3
I L average
Active Power
kW L1
kW L2
kW L3
kW total
Reactive power
kVAr L1
kVAr L2
kVAr L3
kVAr total
Apparent Power
kVA L1
kVA L2
kVA L3
kVA total
Powerfactor
Pf L1
Pf L2
Pf L3
Pf average
Energy
kWh total
Mains side
Frequency
Measured on any available line voltage
Phase Voltage
V L1-L2
V L2-L3
V L3-L1
Protections
Overcurrent protection
I L1
I L2
I L3
Synchroniser
Phase difference
Between generator and
Frequency difference
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