Vertiv Liebert MBSM - Figure 4 Connection Example-Liebert MBSM, Liebert EXL S1 and Transformer Box; Transformer Box Connections

Vertiv
™
|Liebert
®
MBSM
™
User Manual | 10
2.6.1 Transformer Box Connections
Figures 4 and 5 show the connections between the Liebert MBSM, UPS(s), and transformer box
(the UPS module Bus A versus B assignments are examples only):
Figure 4 Connection example—Liebert MBSM, Liebert EXL S1 and transformer box
UPS Module 1
AP30-XP31
UPS Module 2
UPS Module X
Transformer Box
Control Power
Reference Inputs
415V 3-Phase
4-Wire + Gnd
230V 1-Phase
Critical
Output
Bus B
Critical
Output Bus A
480V 3-Phase
3-Wire + Gnd
Bypass
Input Line A
Bypass
Input Line B
RJ11 RJ11 RJ11
...
XT1
XT1
XT1
MSBM Box
XP1
...
XPxXP2
AP30-XP31 AP30-XP31