Vertiv Liebert S600E - UPS Operating Modes

USER MANUAL-S600E
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504402079908 S600E
3.When the mains is abnormal, the rectifier/PFC circuit boosts the battery voltage and supplies it to the inverter. The inverter then converts
it into pure sine wave AC power and supplies the AC power to the load through the electronic transferswitch.
4.After the mains returns to normal state, the UPS will automatically transfer from Battery mode to Normal mode, the mains supply DC
power to the inverter through the rectifier/PFC circuit, and then the electronic transfer switch supplies AC power to the load.
1.5 Operating Modes
The UPS features the following operating modes:

Normal mode

Battery mode

Bypass mode

Maintenance mode

ECO mode

Parallel redundancy mode (system expansion)

LBS system mode

Common battery string mode
Normal mode
As shown in Figure 1-3, the mains is rectified by the UPS rectifier and then inverted by the inverter to supply
uninterrupted AC power to the loads. At the same time, the charger will charge the battery.
Mains Incomer
Rectifier
Inverter
Automatic inverter switch
UPS output
Rectifier input switch
Output switch
Battery
Battery charger
Figure 1-3 Normal operating mode line diagram
Inbuilt Isolation
Transformer