User Manual 200 kVA-1200 kVA UPS
5 Operation
67
Fig. 5-4 Output information
Step 7
: Check whether the actual number of battery pack is consistent with the number of cells set in the
monitoring display interface; Then, measure by the multimeter whether the voltage of the battery pack is greater
than a certain value (for 12V battery, 11.4v × cell number) to prove that the battery pack is connected properly.
After confirming that the battery pack is connected properly, close the input switch of the battery pack (if there are
multiple battery packs, close the switch of each battery pack first, and then close the main switch between the
battery pack and the UPS). The battery self-test checks whether the battery is working normally.
Step 8
:
Close the system output switch so that UPS supplies the power to the load.
Note:
If UPS is already powered on or in bypass power supply mode, and it is necessary to turn on the inverter power
supply mode, complete Step only after confirmg that there is no abnormal alarm; If the UPS is completely
powered down, complete all mentioned-above steps.
5.2 Manually Open and Close Bypass
CAUTION
In bypass power supply mode, when the input voltage or the frequency range exceeds the set
value of the system, it may lead to no system output and load power failure.
Before manually switching to the bypass, make sure to confirm that the bypass is normal. If
the bypass is abnormal, manually switching the bypass will be invalid and the previous state
will be retained.
5.2.1 Manually Open Bypass
The bypass is manually opened as described below:
Step 1
: Manually switch to bypass
If the "Control" on the main menu of the monitoring display unit is gray, unlock it first: chick the password lock
on the upper right corner of the display interface while the system will pop up the unlock window and enter the
password to complete the unlocking.
Select [Control] from the main menu of the monitoring display unit, and click “On” on “Manual to bypass”.
Confirm the operation to complete manually switching to bypass power supply mode, as shown in Fig. 5-5.
Summary of Contents for EA990 Super
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