Njoy Ranger 30KR User Manual page 42

Enable: CVCF function is enabled. The output frequency will be
fixed at 50Hz or 60Hz according to setting of "Output Freq.". The input
frequency could be from 46Hz to 64Hz.
Disable: CVCF function is disabled. The output frequency will
synchronize with the bypass frequency within 46~54 Hz for 50Hz system
or within 54~64 Hz for 60Hz system. Disable is the default setting.

Bypass Forbid:
Enable: Bypass Forbid is enabled. It's not allowed for running in

Bypass mode under any situations.
Disable: Bypass Forbid is disabled. UPS will run in Bypass mode. It is
the default setting.

Bypass at UPS off: Select the bypass status when manually turning
off the UPS. This setting is only available when "Bypass forbid" is set to
"Disable".
Enable: Bypass enabled. When selected, bypass mode is activated.
Disable: Bypass disabled. When selected, no output through bypass
when manually turning off the UPS.

Bypass Voltage Range: Set the bypass voltage range.
H: High voltage point for bypass. The setting range is 231V ~ 264V
when the UPS is HV system.

Bypass FRE Range: Set the bypass frequency range.
The acceptable bypass frequency range from 46Hz to 54Hz when UPS is
50Hz system and from 56Hz to 64Hz when UPS is 60Hz system.
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