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3.2.3 Battery Mode
The UPS automatically transfers to Battery mode if the utility power fails. There is no interruption
in power to the critical load upon failure.
In battery mode, the rectifier derives power from the battery and supplies DC power to the
inverter. The inverter filters the DC power and converts it into pure and stable AC power to the
load.
Figure 3-4 : Battery Mode Diagram
3.2.4 Bypass Mode
Upon connecting to utility input power, the UPS is in Bypass mode before UPS is turned on (if
BYPASS enable setting is Enabled), and charger function will be active when battery is present.
After UPS has been turned on, if the UPS encounters abnormal situations (over-temperature,
overload …, etc.), the static transfer switch will perform as a transference of the load from the
inverter to the bypass source with no interruption. If the transference is caused by a recoverable
reason, the UPS will turn back to line mode when abnormal situation is solved.
Figure 3-5 : Bypass Mode Diagram
