3 5
Ultron HPH Series UPS
y
Dual Input (Single Unit)
When there are two AC power sources, single unit wiring procedures are as follows.
1
Follow
5.5.2 Single Input/ Dual Input Modification
to modify the UPS into dual
input. Please note that only authorized Delta engineers or service personnel can
modify single input/ dual input setup.
2
Follow
steps
1
~
5
stated in section
Single Input (Single Unit)
.
3
Connect the main AC source/ bypass source/ output/ external battery cabinet cables
to the relevant wiring terminal blocks and do not forget to ground the UPS (please
refer to
Figure 5-12
and
Figure 5-13
).
(Figure 5-12: Single Unit Dual Input Wiring Diagram_20/ 30kVA)
1 2 3 4
E X T . S W I T C H
S T A T U S
BATTERY INPUT
144V DC
144V DC
Front View - 20/ 30kVA
Rear View - 20/ 30kVA
For the UPS
grounding
For the
critical loads’
grounding
External Manual
Bypass Breaker
and Output Breaker
ON/ OFF Detection
R S T
N
R S T
N
R S T
N
R S T
N
Connects the
main AC source
Connects the
bypass source
Connects the
critical loads
Bypass
Breaker
Input
Breaker
Manual
Bypass
Breaker
Connects the external
battery cabinet
For the external
battery cabinet’s
grounding
-
+
N
Output
Breaker
