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UPS for 400 Vac Grid, Installation Guide, doc. rel. 3.0
System Menu > Setup > Modules > Ac output voltage calibration
and change the output
voltage for the problematic module phase. You must tap
Confirm
for each module that you
update.
11.
When you have verified that all of the slave systems have output voltages 1 % of the
master system, put each system in Bypass mode:
(
System 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 1 %.
13.
Return all of the systems to inverter mode.
14.
Move the output circuit breaker of each UPS to the ON position (CB5 in the connection
diagrams - Figure 60).
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.
