Connecting Battery Cables - Liebert S600 User Manual

1. The Vertiv parallel cables must be used for the parallel system.
2. If the parallel communication fault occurs during the parallel commissioning or operation just shut off the system
and check whether the connection of the parallel cables is correct.
3. During parallel system operation, do not unplug the parallel cables to avoid system damage risk.

3.3.3 Connecting Battery Cables

In the parallel system, the 20kVA UPS can either share the battery strings or use the battery strings independently. The
10kVA UPS can only use the battery strings independently.
Using battery string independently
When each UPS of the parallel system uses the battery string independently, the battery cables connection of each UPS
in the parallel system is the same with that of the single UPS, refer to 2.5 Connecting Battery Cables for the
installation method. The schematic diagram of battery strings in 1 + 1 parallel system with independent battery strings
is shown in Figure 3-2 (a) and (b). Refer to 2.4 Connecting Power Cables to configure an MCB.
Make sure that the LCD settings are correct when using the battery strings independently for the parallel system, refer
to 3.5.2 Parallel System Parameters Settings for details.
Vertiv|Liebert® S600 10kVA ~ 20kVA UPS | User Manual
Figure 3-1
Cabel Connection schematic diagram of 2 + 1 parallel system (20kVA)
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