UPS for 400 Vac Grid, User Guide, doc. rev. 4
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To detect and correct any inaccuracy in an AC power module output voltage:
1.
Look at each AC power modules AC output voltage in the main>status>modules screen and
locate the module with the inaccurate output voltage.
2.
Isolate the UPS from all AC and DC power and open the rear bottom cover to expose the
output and mid-point bus bars.
3.
Turn on input AC and battery circuit breakers.
4.
Turn on the system and wait for it to transfer to normal mode
5.
Select and shut down all other inverters. Main>operation>turn on/off>modules
off>inverter off.
6.
Using a calibrated voltmeter measure the output line (L1, L2, L3) to midpoint voltage.
Figure 32: Output terminals
7.
Navigate to Setup > Modules > AC output voltage adjustment.
8.
The Output Voltage Adjustment screen appears.
