7 – Wiring
(continued)
7-8 AC Input/Output Wiring (Parallel UPS – Single Input Source)
Parallel UPS 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 configuration only supports 2 UPS systems (1+1
redundancy or capacity). Do not attempt to link more than
two UPS systems via parallel configuration.
• The UPS systems must have the same rating and capacity
for parallel UPS installation. Attempting to link
dissimilar UPS systems will damage the UPS systems
and create a serious risk of personal injury and property
damage.
• Each UPS must have its Parallel group set to 2 and a
different "Parallel ID" that indicates the UPS systems are
being run in parallel. (See
1
•
Follow the steps in
Section
in the diagram.
•
2
Connect the included parallel UPS cable
of each UPS system.
7-9 AC Input/Output Wiring (Parallel UPS – Dual Input Sources)
Parallel UPS 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 configuration only supports 2 UPS systems (1+1
redundancy or capacity). Do not attempt to link more than
two UPS systems via parallel configuration.
• The UPS systems must have the same rating and capacity
for parallel UPS installation. Attempting to
link dissimilar UPS systems will damage the UPS systems
and create a serious risk of personal injury and property
damage.
• Each UPS must have its Parallel group set to 2 and a
different "Parallel ID" that indicates the UPS systems are
being run in parallel. (See
•
1
Follow the steps in
Section
in the diagram.
2
•
Connect the included parallel UPS cable
of each UPS system.
Section 10-5-5
for more details.)
7-7, wiring the UPS systems as shown
A
to the parallel port
Section 10-5-5
for more details.)
7-7, wiring the UPS systems as shown
A
to the parallel port
1
B
B
2
1
B
B
2
21
1
2
3
4
5
B
6
A
7
8
9
10
11
12
B
A
13
14