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49
Figure 36 NX 1+1 parallel cabinet interconnections
Table 18 Liebert-supplied interconnect wiring
Run From To Conductors Cabinet Type
A Utility AC Source Paralleling Cabinet PH A, B, C - Bypass BR0, CR1, DR1
B Utility AC Source Paralleling Cabinet Neutral - Bypass BR0, CR1, DR1
C Utility AC Source UPS Module AC Input PH A,B,C - UPS A00, BR0
D1 UPS #1 Module AC Output Paralleling Cabinet PH A, B, C - UPS A00, BR0, CR1, DR1
D2 UPS #2 Module AC Output Paralleling Cabinet PH A, B, C - UPS A00, BR0, CR1, DR1
E Utility AC Source UPS #1 Module AC Input Neutral - UPS Input A00, BR0, CR1, DR1
E2 Utility AC Source UPS #1 Module AC Input Neutral - UPS Input A00, BR0, CR1, DR1
F1 Paralleling Cabinet UPS #1 Module AC Output Neutral - UPS Output A00, BR0, CR1, DR1
F2 Paralleling Cabinet UPS #1 Module AC Output Neutral - UPS Output A00, BR0, CR1, DR1
G Paralleling Cabinet Load AC Connection Neutral - Load A00, BR0, CR1, DR1
H Paralleling Cabinet Load AC Connection PH A, B, C - Load A00, BR0, CR1, DR1
I Utility AC Source All Ground Connections Ground A00, BR0, CR1, DR1
J Monitoring Terminal Block UPS Parallel Logic Board (M3) Auxiliary Contacts A00, BR0, CR1, DR1
K1 UPS #1 Module AC Input Paralleling Cabinet PH A, B, C - UPS CR1, DR1
K2 UPS #1 Module AC INPUT Paralleling Cabinet PH A, B, C - UPS CR1, DR1
G
Type A00
D1
D2
H
J
I
Type BR0
G
B
A
I
J
Type DR1 & CR1
I
B
H
A
J
E1,E2
D1,D2
I
K1,K2
C
F1,F2
F1, F2
F1,F2
D1
D2
H
F1,F2
D1
D2
G
K1
K2
E1,E2
1+1 Parallel Cabinet
(Front View Without Front Door and Panel)
UPS Module Left Side View
(Without Side Panel)
NOTES:
1. All Liebert-supplied cable will need to be repositioned prior to and while setting the cabinets in their
installed location.
2. All interconnection cable and hardware supplied by others.
3. AC connections must be made to the UPS modules before attaching paralleling cabinet to UPS modules.
4. Utility AC source neutral not required for maintenance bypass/transformer cabinet type CR1.
5. Paralleling cabinets must between both UPS modules.
6. Refer to the individual drawing of each piece of equipment for additional details