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Installation Drawings
133
Figure 141Two-eight paralleled Liebert FS units with factory-integrated circuit breaker in parallel with a
Liebert UPS
Bi-Directional
Power Converter
NOTES
1. Series 610/600 requires the use of MBD for more than
three units in parallel. It can power a total of three UVRs
maximum in any combination of FS units, plus module
battery disconnect switches.
Liebert FS
Systems
in Parallel
3
Out
Liebert UPS Module
When parallel, all DC power cables must be
identical in length, ± 10%.
1
Liebert FS (N)
InverterRectifier
DC Junction Box
12-100120-20
Rev. 01
3
In
FLYWHEEL
Normally
Open
Circuit Breaker
2
Bi-Directional
Power Converter
Liebert FS (3)
FLYWHEEL
Normally
Open
Circuit Breaker
2
Bi-Directional
Power Converter
Liebert FS (2)
FLYWHEEL
Normally
Open
Circuit Breaker
2
Bi-Directional
Power Converter
Liebert FS (1)
FLYWHEEL
Normally
Open
Circuit Breaker
2
2
Battery/Usage
(optional)
Module Battery
Disconnect
2
Series 610/600 requires the use of MBD
for more than three units in parallel.