Vertiv Liebert EXL, Руководство пользователя

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Normal and safe operation Liebert EXL S1
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User Manual 10H52226UM60 - Rev. 1 - 01/2017
5.5. Operating modes
The UPS has four different operating modes. These are described below.
5.5.1. On-line operation
Normal UPS operating mode. The connected loads are supplied from line power via the Inverter. The
batteries are charged as necessary. The inverter reliably filters line power disturbances and provides
a stable, interference-free supply to the load. The Normal state is displayed.
In this operating mode, the UPS switches to battery operation if a line power failure occurs. If an
overload or short circuit occurs on the UPS output, or if there is a fault in the inverter, the UPS
switches to Bypass operation.
Figure
44
- Power flow in on-line operation
5.5.2. Battery operation
In this operating mode, the connected load is supplied from the batteries via the inverter. In the event
of power failure, battery operation is automatically activated and supplies the loads without
interruption. If the power failure lasts longer than 30s, the UPS signals a fault condition. The battery's
operating condition is displayed. From this operating mode, the UPS automatically reverts to on-line
operation within the backup time after the line power returns. If the duration of the power failure is
longer than battery capacity under current load, the UPS provides the relative information via its
interfaces. Computers can be automatically powered down with additional software (optional).
Figure
45
- Power flow during battery operation