Technical CATERPILLAR – 1000 kVA Page
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Description UTILITY POWER MODULE
Revision 1.0 1 May 2006
6.2. Controls – Power organizer
Functional description
The power organiser is a measuring device that in cooperates 3 phase measuring, combined
with complete automatic synchronising capabilities. The module is typical suitable for
generator application, but it can also be used for power measuring applications like outgoing
load feeders or mains incomer load control.
Electrical information can be used for diagnostics, control and protection. Variables required
for control and protection can be retrieved at high sample rate, such that high performance
can be achieved.
Current inputs are used both for measurements and for over current protections.
Different selectable inverse time characteristics over current protections are applicable:
IEC Normal inverse
IEC Very inverse
IEC Extremely inverse
IEC Short inverse
ANSI Normal inverse
ANSI Very inverse
ANSI Extremely inverse
ANSI Short inverse
Active synchronisation is integrated. Synchronisation is only activated if:
• Frequency from both generator and busbar side are above threshold.
• Phase sequence from both generator and busbar are equal
• All 3 line voltages are above threshold value
• Synchronisation is activated
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