WB-UPS-1100/1500/2000 Owner’s Manual
pg.9
Normal Operating Modes
Mode
Description
ECO Mode
ECO (Efficiency Corrective Optimizer) mode is used when the input voltage is within voltage regulation
range. The UPS powers the output directly from the mains and disables the internal fan to save energy.
Buck Mode-AC Normal
Buck mode is used when the input voltage is higher than the voltage regulation range but lower than the
high loss point. The UPS uses the internal auto voltage regulator to step the input power down to the
specified output range.
Boost Mode-AC Normal
Boost mode is used when the input voltage is lower than the voltage regulation range but higher than the
low loss point. The UPS uses the internal auto voltage regulator to step the input power up to the specified
output range.
Battery Mode
The UPS switches to battery mode when input power is lost, or when the input voltage is beyond the
acceptable range for auto voltage regulation (boost or buck mode).
Standby Mode
UPS outlets are powered off. Batteries will charge as needed.