Three-Phase UPS (10kVA-160kVA) Series
User Manual
5 Operation Guide
87
Step 2
Do the shutdown operation of single inverter to turn off all inverters respectively.
Step 3
Do the shutdown operation of single UPS to switch off the relevant switches.
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Generally, it isn't recommended to start or close parallel system frequently.
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5.4.3 Remove Faulty UPS from Parallel System
When one UPS failure, it will remove from parallel system automatically with sound&light alarm.
Now, perform the operations shown in Figure5-1 to remove the faulty UPS from parallel system
completely to achieve online hot maintenance or replacement.
Switch off breaker in the
distribution box , which connects
with the faulty UPS.
Close the faulty UPS
according to shutdown
procedures.
Figure5-1
Remove faulty UPS from parallel system
When the parallel system works normally, don't remove UPS from the parallel system until it's
switched off, or the power system will work abnormally.
Before removing faulty UPS from parallel system, close faulty UPS completely.
5.4.4 Add New UPS into Parallel System
When it has to add one or more UPS into parallel system, perform the operations shown in Figure5-2.
When the added UPS works steadily, it will add into parallel system automatically for share current.
Finish installing the
added UPS
Start the added UPS
according to the startup
procedures successively
Switch on breaker that
connected with added UPS in
the distribution box
Figure5-2
Add new UPS into parallel system