Figure 39 Lineup Detail-1+N Type A1 Connection To Nx; Table 21 Interconnect Wiring-1+N Type A1 Connection To Nx - Emerson Liebert NX 10-30kVA Installation Manual

Figure 39 Lineup detail—1+N Type A1 connection to NX
1 + N Parallel Cabinet
(front view without front door and panel)
UPS Module Left Side View
(without side panel)
Table 21 Interconnect wiring—1+N Type A1 connection to NX
Run
A
B
C
D1-D4
E1-E4
F1-F4 UPS #1-UPS #4 Module AC Output
G1-G4 UPS #1-UPS #4 Module AC Output
H1-H4
I
J
K
L1-L4
1. All Liebert-supplied cable must be repositioned prior to and while
setting the cabinets in their installed location.
2. All interconnection cables and hardware supplied by others.
3. AC connections must be made to the UPS modules before attaching
paralleling cabinet to UPS modules.
4. The interconnecting input cables between the paralleling cabinet
and the UPSes must be the same size and the same length.
5. The interconnecting output cables between the paralleling cabinet
and the UPSes must be the same size and the same length.
6. The location of the system output neutral busbar (connection K)
and the ground busbar (connections H, I and J) are shown for a
left-access style. For right-access version, these busbars are at
opposite locations.
7. Refer to the individual drawing of each piece of equipment for
additional details.
From
Utility AC Source
Utility AC Source
Utility AC Source
Paralleling Cabinet
Paralleling Cabinet
Paralleling Cabinet
Paralleling Cabinet
Paralleling Cabinet
Paralleling Cabinet
Paralleling Cabinet
1 + N Cabinet Interior View
(neutral and ground busbar location)
To
Paralleling Cabinet
Paralleling Cabinet
Paralleling Cabinet
UPS #1-UPS #4 Module AC Ground
UPS #1-UPS #4 Module AC Ground
Paralleling Cabinet
Paralleling Cabinet
UPS #1-UPS #4 Module AC Ground
Load AC Connection
Load AC Connection
Load AC Connection
UPS #1-UPS #4 Module
UPS Parallel Logic Board (M3)
52
Installation Drawings
Conductors
Ph A, B, C - System Input
Ground - System Input
Neutral - System Input
Ph A, B, C- UPS Input
Neutral - UPS Input
Ph A, B, C - UPS Output
Neutral - UPS Output
Ground - UPS
Ph A, B, C - Load
Ground - Load
Neutral - Load
Output Breaker Aux Contact