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2.3 Connection of parallel system
Parallel
cable
Parallel
cable
Parallel
cable
UPS1
UPS2
UPS4
UPS3
Fig.2-4 parallel system
Make sure all the breakers are off and no output at the UPS output.
Parallel cables:
When the UPSes are connecting in parallel, the copper wires required to connect
with each UPS is minimum 5AWG, but the main wire for linking all the UPS in
parallel should be N* 5AWG(N refers to the number of the UPS in parallel.)
Make sure the cables are as shorter as possible to reduce any possible noise
interference to data transfer.
CAUTION
Connect the A/B/C/N/L and E well
Configured individual battery bank for each extend backup UPS in
parallel system. Don’t use common battery bank.