Delta Ultron Series User Manual page 114

b. Tap the icon (
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.
Ultron DPS Series
) to check if the Parallel Group ID no. and Parallel ID no. are set
114