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UPS for 480 Vac Grid, User Guide, doc. rel.4.0
9.
Measure the voltage between the L1 bus and midpoint bus bar. See Figure 42: Output
terminals. You would expect the value to be around 277Vac, ± 3 V.
10.
Compare your measured value to the nominal output voltage.
11.
Adjust line 1 up or down accordingly to acquire the desired output voltage.
12.
Press confirm.
13.
Wait 5 seconds and verify that the output voltage of L1 changed accordingly.
14.
Measure the voltage between the L2 bus and midpoint bus bar. See Figure 42: Output
terminals. You would expect the value to be around 277Vac, ± 3 V.
15.
Compare your measured value to the nominal output voltage.
16.
Adjust line 2 up or down accordingly to acquire the desired output voltage.
17.
Press confirm.
18.
Wait 5 seconds and verify that the output voltage of L2 changed accordingly.
19.
Measure the voltage between the L3 bus and midpoint bus bar. See Figure 42: Output
terminals. You would expect the value to be around 277Vac, ± 3 V.
20.
Compare your measured value to the nominal output voltage.
21.
Adjust line 3 up or down accordingly to acquire the desired output voltage.
22.
Press confirm.
23.
Wait 5 seconds and verify that the output voltage of L3 changed accordingly.
24.
Repeat this process for all modules as needed.
