Ups Installation For Parallel Rack System; Input And Output Wiring - INFOSEC UPS SYSTEM ModT User Manual

9. UPS Installation for Parallel Rack System

The chapter introduces how to install and set up the single rack system to parallel rack system.
Warning:
You need to order the parallel cable for this kind of application. The parallel is required for the

installation and operation.
If you want to install the UPS to parallel rack system by yourself, installation must be under

the supervision of authorized engineers or service personnel.
For the parallel system, all firmware version of power modules must be 10.69 or higher and

firmware version of LCD must be 09.50 or higher. But once the system involved the new/old
version of power module or old LCD firmware, it can't do the parallel system.

9.1 Input and Output Wiring

1. When install the parallel rack system, the input wires (R, S, T, N) length of the Rack must be
equal to another Rack input wires. Likewise, the output wires (R, S, T, N) length of the Rack
must be equal to another Rack output wires. The same length of input and output wires of two
Racks are required, or it will cause the unbalance current of output load.
2. Refer to Chapter "3. Installation" about the input and output wiring and battery wiring methods
in User Manual.
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Figure 9-1 Parallel System Wiring
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