
16
Fig 3-2: Battery mode diagram
B. When the battery capacity decreases, the number of the battery capacity LEDs turned on will be reduced.
If the battery voltage descends to the alarm level, the buzzer will beep once every second to remind the
users of in sufficient battery capacity and the UPS is soon going to shut down automatically. Then the
load operations should be carried out promptly and the loads should be eliminated one by one.
3.2.3. Bypass mode
The display panel in bypass mode is shown in the following diagram Fig 3-3. The utility power LED and the
bypass LED are lit. The displayed number of the load LEDs will be turned on in accordance with the load
capacity connected. The UPS will beep once every 2 minutes in bypass mode.
l
The utility power LED flashes. It shows that the voltage or frequency of the utility power has exceeded
the normal range of the UPS.
Fig 3-3: UPS bypass mode diagram
l
Other indications on the display panel are the same in utility mode.
l
The UPS does not have the backup function when it is in bypass mode. The power used by the load is
supplied from the utility power via internal filter.
3.2.4. Abnormality mode
In case the fault LED is turned on when the UPS is in use, it shows that the UPS is operating in abnormal
mode. Please refer to the troubleshooting in section 6 for detail.
3.2.5. Backup time for the standard model
The backup time of the long backup time model is dependent on the external battery pack capacity and the
load level as well as other factors.
The backup time of standard model may vary from different models and load level, please refer to the
following:
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