Powerware Uninterruptible Power Supply SOLA 4000 - Manual (Page 56)

SOLA 4000 - Installation and Initial Start-Up
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to the nominal load. Measure the currents at the output of each
module on phase T. If this current varies by more than ± 1% for
this module, fine adjustment can be made with P1 on the IPR
pcb.
Check the currents at the output of each module on phase S.
These currents must be balanced to within ± 1% by finely
adjusting the inverter voltage of phase S (P4 on ICT-2). i.e. If
the module is supplying more current than the system average,
the inverter voltage of this module must be reduced slightly.
Repeat for phase R currents by finely adjusting the R phase
inverter voltage of this module with P3 on the ICT-2 pcb until
the currents on the phase R of all modules are equal to within
± 1%.
• T
HE SYSTEM START
-
UP HAS NOW BEEN SUCCESSFULLY COMPLETED
.
3 Additional Start-Up Proced. for Multi-Unit Systems