Gamatronic Centric Series Installation Manual page 62

GAMATRONIC, A S E D
OLAR DGE IVISION
For each module with an "out of range" output voltage, note which module it is, which phase or
phases are out of range, and what the voltage is. The system must disconnceted from all others
and the modules in the unit must be shut down. Once the module that has a variant outputvoltage
is found, Then, navigate to
"Main menu > Setup > Modules > Ac output voltage adjustment"
and change the output voltage for the problematic module phase. Repat this for each phase and
module until the full system is able to supply the desired output voltage.
11.When you have verified that all of the slave systems have output voltages within ±2 V of the
master system, put each system in bypass mode
(Main menu > Operation > Transfer > Transfer load to bypass).
12.For each slave system, compare the output voltage of each phase to that of the master
system, as you did above, except that now the systems are in bypass mode. Any voltage
difference should be no greater than 2 Vac.
13.Return all of the systems to bypass mode.
14.Move the output circuit breaker of each UPS to the ON position. (CB5 in the connection
diagrams).
15.Compare the output current from each pair of systems. Under full load, the difference in output
current between any two systems should not exceed ±10 % of the total system output current.
16.The parallel systems are now ready for use for any loads up to the maximum rated output in
kW of the combined systems.
17. Transfer to inverter.
62
Centric Installation Guide, rel. 4.7