Ultron DPS Series
114
b. Tap the icon ( ) to check if the
Parallel Group ID
no. and
Parallel ID
no. are set
properly. The UPS with the smallest
Parallel ID
no. is the master UPS.
Step 3
Complete the rest of the steps in
6.2 Start-up
Procedures
according to your chosen mode.
Step 4
Ensure that the output voltage difference between each parallel UPS is below 3V. Only
authorized Delta engineers or service personnel can check the output voltage difference, or
it must be done under the supervision of authorized Delta engineers or service personnel.
Step 5
Now, the UPSs are ready to operate in parallel.
•
Turn-off Procedures (Parallel Units)
WARNING:
To turn off one of the parallel UPSs, please check whether the remaining parallel
units’ total capacity exceeds the total critical loads. Otherwise, all parallel units will
shut down due to overload. Before doing this, please contact service personnel.
Perform the steps following your chosen mode’s section in
6.3 Turn-off
Procedures
. Make
sure to synchronize each step to all the parallel UPSs.
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