Njoy Ranger 30KR User Manual page 27

There are three sub-menus under "Advance
BATT and OTHERS.
ELECTRIC
Output VOLT: Select the output rated voltage.

If the UPS is HV system, there are four options, 208V, 220V, 230V
and 240V.

Output Frequency: Select output rated frequency.
50Hz: The output frequency is setting for 50Hz.
Advance Setting Menu Page
Electric Setting Page 1
User" setting: ELECTRIC,
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