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Installation Drawings
29
Figure 27 Liebert NXL Module Battery Disconnect interconnect wiring to 250-400kVA UPS
Table 2 Liebert-supplied interconnect wiring
Run From To Conductors
A1 UPS - DC+ Busbar MBD - DC + Busbar Positive Power - Right Mount
B1 UPS - DC- Busbar MBD - DC - Busbar Negative Power - Right Mount
A2 UPS - DC+ Busbar MBD - DC + Busbar Positive Power - Left Mount
B2 UPS - DC- Busbar MBD - DC - Busbar Negative Power - Left Mount
C * UPS - GROUND MBD - GROUND Ground
D UPS - External Interface Board (EIB) MBD - Battery Interface Board (BIB) CAN Control Cables
* This is used only for detached cabinets. If the cabinets are attached, use the grounding shown in Figure 25.
UPS
D
A1
B1
C
C
D
A1,2
B1, 2
A2
B2
B1, 2
A1, 2
C
UPS - Rear View
DC Bus Connections
Module Battery Disconnect
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