CHLORIDE 70-NET 10 - 40KVA
6.5. OPERATING MODES
The UPS has four different operating modes. These are described below.
On-line operation
Normal UPS operating mode. The connected loads are supplied from the
mains via the Inverter. The batteries are charged as necessary.
The inverter reliably filters mains disturbances and provides a stable, inter-
ference-free supply to the load.
On the control panel, the "OK" LED is illuminated when the UPS is in on-line
operation.
In this operating mode, the UPS switches to battery operation if a mains failure occurs. If
an overload or short circuit occurs at the UPS output, or if there is a fault in the inverter, the
UPS switches to bypass operation.
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 withput interruption. If the power failure lasts longer than
30 s, the UPS signals a fault condition.
In battery operation, the "OK" (green) LED and "WARNING" (yellow) LED on
the control panel flash.
From this operating mode, the UPS automatically returns to on-line operation within the
backup time once the mains supply returns. If the power failure lasts longer than the loads
can be supplied by the battery, the UPS provides relevant information via its interfaces.
Computers can be automatically powered down with additional software (optional).
Bypass operation
In this operating mode, the connected loads are supplied from the mains via
the electronic bypass.
The electronic bypass serves to further ensure power to the loads. If an
overload or short-circuit at the UPS output occurs, it is automatically activat-
ed to ensure uninterrupted power supply to the loads.
The "WARNING" (yellow) LED on the control panel illuminates.
From this operating mode, the UPS automatically returns to on-line operation after the fault
is corrected.
Bypass operation can also be specifically selected by a button on the LCD control panel.
Service bypass
In this operating mode, the connected loads are supplied directly from the
mains supply. Switch QS3 is ON, and all other UPS switches are OFF.
There is no supply to the Display/Control Panel in this condition.
The service bypass is used to supply the connected loads with voltage dur-
ing maintenance work on the UPS.
User Handbook - 10H52163PAMC rev.9 - 06/2008
NORMAL AND SAFE OPERATION
ENG
Figure 19 - Power flow
in on-line operation
Figure 20 - Power flow
in battery operation
Figure 21 - Power flow
in bypass operation
Figure 22 - Power flow
in service bypass
operation
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