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Vertiv
™
|
Liebert
®
NX
™
225-600kVA Installation Manual | Rev. 8 | 07/2017
18
Figure 4
Grounding diagram—Three-wire multi-module systems
2.5.2
Preferred Grounding Configuration, Battery Systems
Battery cabinet systems must be connected as floating (ungrounded) systems.
Center-tapped or grounded battery systems are not possible with battery cabinet systems.
Whether the battery system is open-rack or cabinet, the metal rack parts or cabinet must be grounded to the
UPS module ground bus.
UPS
Source
G
N
BPSS
G
UPS
BPSS
G
UPS
BPSS
G
Switchgear
To
co
nnect
eq
ui
pm
en
t
G