Table 21, Interconnect wiring—1+n type a1 connection to nx – Emerson 60HZ User Manual
Page 58
Installation Drawings
52
Figure 39 Lineup detail—1+N Type A1 connection to NX
Table 21
Interconnect wiring—1+N Type A1 connection to NX
Run From
To
Conductors
A
Utility AC Source
Paralleling Cabinet
Ph A, B, C - System Input
B
Utility AC Source
Paralleling Cabinet
Ground - System Input
C
Utility AC Source
Paralleling Cabinet
Neutral - System Input
D1-D4
Paralleling Cabinet
UPS #1-UPS #4 Module AC Ground
Ph A, B, C- UPS Input
E1-E4
Paralleling Cabinet
UPS #1-UPS #4 Module AC Ground
Neutral - UPS Input
F1-F4
UPS #1-UPS #4 Module AC Output
Paralleling Cabinet
Ph A, B, C - UPS Output
G1-G4
UPS #1-UPS #4 Module AC Output
Paralleling Cabinet
Neutral - UPS Output
H1-H4
Paralleling Cabinet
UPS #1-UPS #4 Module AC Ground
Ground - UPS
I
Paralleling Cabinet
Load AC Connection
Ph A, B, C - Load
J
Paralleling Cabinet
Load AC Connection
Ground - Load
K
Paralleling Cabinet
Load AC Connection
Neutral - Load
L1-L4
Paralleling Cabinet
UPS #1-UPS #4 Module
UPS Parallel Logic Board (M3)
Output Breaker Aux Contact
1 + N Parallel Cabinet
(front view without front door and panel)
1 + N Cabinet Interior View
(neutral and ground busbar location)
UPS Module Left Side View
(without side 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 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.