UPS for 208 Vac Grid, B120US Installation Guide, doc. rel. 3.0
79
Figure 56: Ac output voltage display for a single module
11.
You will see the ac output voltage display, per module. By tapping on each of the
module icons on the left side of the screen you can see which modules have an output
voltage that is more than 2 % different from the Master system.
12.
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. Then, navigate to:
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.
13.
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
).
14.
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 %.
15.
Return all of the systems to inverter mode.
16.
Move the output circuit breaker of each UPS to the ON position (CB5 in the connection
diagrams - Figure 57).
