Njoy Balder Series User Manual page 18

• CVCF mode
When input frequency is within 46 to 64Hz, the UPS can be set at a
constant output frequency, 50 Hz or 60 Hz. The UPS will still charge
battery under this mode. When used in CVCF mode, the power of the UPS
is de-rated to 60%.
• Battery mode
When the input voltage is beyond the acceptable range or power failure,
UPS will backup power from battery and alarm will beep every 4 seconds.
• Bypass mode
When the input voltage is beyond the acceptable range or power failure, UPS
will activate backup power from battery and alarm will beep every 4 seconds.
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LCD display
LCD display
LCD display