Delta NT Series User Manual

Chapter 4 Installation & Wiring
62
4.9.11 UPS Parallel Wiring Diagram (Dual Input)
When UPSs are paralleled, the length of each unit's input cables (reserve source)
plus output cables must be the same. This ensures that the parallel UPSs can
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ġġġ
Res1+OP1=Res2+OP2=…………..=Res8+OP8
O/P
I/P
Reserve
IP 1
Res 1
OP 1
OP 2
OP 8
CNQ7
CNQ8
UPS 1
UPS 8
O/P
I/P
Reserve
IP 2
Res 2
CNQ7
CNQ8
UPS 2
O/P
I/P
Reserve
IP 8
Res 8
CNQ7
CNQ8
UPS 8
I/P
Reserve
LOAD
Parallel Cable
NOTE:
When the total number of the parallel UPS units is more than four, please
install a load sharing choke between each parallel UPS and its connected
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For more information, please contact your local dealer, sales representative
or Delta customer service.

Delta NT Series Specifications

General

Brand	Delta
Model	NT Series
Category	UPS
Language	English