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Installation Drawings
51
Figure 38 Lineup detail—1+N Type A connection to NX
Table 20 Interconnect wiring—1+N Type A connection to NX
RUN FROM TO CONDUCTORS
A1-A4 Utility AC Source UPS #1-UPS #4 Module AC Input Ph A, B, C - UPS Input
B1-B4 Utility AC Source UPS #1-UPS #4 Module AC Input Neutral - UPS Input
C1-C4 UPS #1-UPS #4 Module AC Output Paralleling Cabinet Ph A, B, C- UPS Output
D1-D4 UPS #1-UPS #4 Module AC Output Paralleling Cabinet Neutral - UPS Output
E1-E4 Paralleling Cabinet UPS #1-UPS #4 Module AC Ground Ground-UPS
F Paralleling Cabinet Load AC Connection Ph A, B, C - Load
G Paralleling Cabinet Load AC Connection Ground-Load
H Paralleling Cabinet Load AC Connection Neutral-Load
I1-I4
Paralleling Cabinet
UPS #1-UPS #4 Module
Parallel Logic Board (M3)
Output Breaker Aux Contact
1 + N Parallel Cabinet
(front view without front door and panel)
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 output cables between the paralleling cabinet and the UPSes must be the same siz
e
and the same length.
5. 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
6. Refer to the individual drawing of each piece of equipment for additional details.