Emerson 480V Manuel D’Utilisation
Installation Drawings
57
Figure 40 Liebert NX 480V 40-120kVA UPS to Paralleling Cabinet Interconnection—Configuration BB0,
FB0, KB0 parallel connection to Liebert NX
C1-C4
D
E1-E4
B1-B4
C1-C4
B1-B4
A
G1-G4
H1-H4
H1-H4
E1-E4
F
F
FRONT
Without Covers
FRONT
Door Open
REAR
Without Covers
G1-G4
H1-H4
H1-H4
Run
From
To
Conductors
A
Utility Source
Parallel Cabinet
Ph A, B, C - System
Input
B1-B4
Parallel Cabinet
UPS #1-UPS #4 Module
AC Input
Ph A, B, C - UPS
Inputs
C1-C4
UPS #1-UPS #4
Module AC Output
Parallel Cabinet
Ph A, B, C -
UPS Outputs
D
Parallel Cabinet
Critical Loads
Ph A, B, C - System
Outputs
E1-E4
Parallel Cabinet
UPS #1-UPS #4
Module Gnd
Ground - UPS
F
Parallel Cabinet
Building Gnd
Ground - System
G1-G4
Parallel Cabinet
UPS #1-UPS #4 Module
UPS Parallel Logic
Board (M3)
Output Breaker Aux
Contact
H1-H4
Parallel Cabinet
UPS #1-UPS #4 Module
UPS Parallel Logic
Board (M3)
UPS Bypass
Detection