UPS for 208 Vac Grid, B120US Installation Guide, doc. rel. 3.0
85
Table 11: Normal mode operating position of the circuit breakers
Battery box input
(on battery box)
Rectifier ac input
(CB 2)
Bypass ac input
(CB 3)
UPS AC output
(CB 5)
Maintenance bypass
(CB 6)
ON
ON
ON
ON
OFF
1.
From the System Menu go to
Status
.
The Status screen appears:
Figure 60: UPS On - Normal Mode
2.
Verify that all three phases of the bypass input voltages are present and the inverter
and bypass are synchronized on the System Controller Status screen.
If they are not, the UPS cannot transfer to bypass mode.
3.
From the System Menu go to
Operation > Transfer load > Transfer load to bypass
.
The Transfer load to bypass?
screen appears: