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7 – Wiring
7-8 AC Input/Output Wiring (Parallel UPS – Single Input)
Parallel Redundancy Warnings:
•
The total input cable length must be equal to the total
output cable length in order to prevent unbalanced load
sharing between two UPS systems under reserve mode
(i.e. Res1 + OP1 = Res2 + OP2; deviation must be <10%).
•
Parallel redundancy only supports 2 UPS systems (1+1
redundancy ). Do not attempt to link more than two UPS
systems via parallel redundancy.
•
The UPS systems must have the same rating and capacity
for parallel redundancy installation. Attempting to link
dissimilar UPS systems will damage the UPS systems
and create a serious risk of personal injury and property
damage.
•
Follow the steps in
1
in the diagram.
•
2
Connect the included parallel redundancy cable
redundancy port
B
7-9 AC Input/Output Wiring (Parallel UPS – Dual Inputs)
Parallel Redundancy Warnings:
•
The total input cable length must be equal to the total
output cable length in order to prevent unbalanced load
sharing between two UPS systems under reserve mode
(i.e. Res1 + OP1 = Res2 + OP2; deviation must be <10%).
•
Parallel redundancy only supports 2 UPS systems (1+1
redundancy ). Do not attempt to link more than two UPS
systems via parallel redundancy.
•
The UPS systems must have the same rating and capacity
for parallel redundancy installation. Attempting to
link dissimilar UPS systems will damage the UPS systems
and create a serious risk of personal injury and property
damage.
•
Follow the steps in
1
in the diagram.
•
Connect the included parallel redundancy cable
2
B
redundancy port
200706017 93-2688 SU manual 4C.indd 21
200706017 93-2688 SU manual 4C.indd 21
(continued)
Section
7-7, wiring the UPS systems as shown
to the parallel
A
of each UPS system.
Section
7-7, wiring the UPS systems as shown
A
to the parallel
of each UPS system.
1
B
2
1
B
2
21
1
2
3
4
5
B
6
A
7
8
9
10
11
12
B
A
13
14
11/29/2007 2:02:42 PM
11/29/2007 2:02:42 PM
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