Bypass Mode Operation; Output Off Mode Operation - Liebert UPS User Manual

BYPASS MODE OPERATION

During BYPASS operation, utility power provides energy to your load and
maintains the batteries in a fully
charged state. The BYPASS will
automatically power the load
temporarily during overloads of the
inverter, when diagnostics detect
equipment problems, or when the
operator selects BYPASS operation.
The four green LEDs indicate an
approximate level of load in 25%
increments. If the BYPASS becomes
loaded beyond full rating, the fifth
Bypass Mode Operation at
(amber) LED indicator will illuminate
51-75% loading
and sound an alarm.
The display template indicates the
percentage of load on the output.
CAUTION: The BYPASS power path does not protect the connected equipment
from severe disturbances on the utility supply.

OUTPUT OFF MODE OPERATION

The UPS output may be disabled even when utility or batteries are available.
Output power may be enabled or disabled using both the front panel controls or
communication options. The UPS output may be disabled automatically when the
utility is absent for an extended time and batteries have been discharged. Output
power will be restored automatically upon restoration of utility.
When the UPS is standing by in this mode with the utility power absent, all panel
LEDs and cooling fans will turn off.
CAUTION: The UPS and loads are not isolated from hazardous voltages in this
mode and output power could be restored at any time. Follow instructions for
powering down the UPS and fully isolating the equipment for maintenance.
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