20 Chapter 2 Installation
Liebert ITA 16kVA/20kVA User Manual
Warning
The DIP switch on the UPS front panel (see Figure1-1) is used to set the parallel address for each UPS single in parallel system
installation. You are not required for setting the DIP switch in UPS single system installation. Set the DIP switch at will can result in
UPS fault!
2.8 Parallel System
The UPS parallel system provides the user with N + X (2N + X4) parallel configuration, N stands for the basic
parallel sets, X stands for the redundant sets.
The UPS parallel system has 1 + 1 parallel POD options, which provide safe and reliable distribution function for
parallel system. The 1 + 1 parallel system only needs one 1 + 1 parallel POD; if N2, the self-distribution will be
required for the parallel system.
Installing parallel system includes:
z
Mechanical installation
z
Setting parallel addresses
z
Connecting parallel cables
z
Connecting 1 + 1 parallel POD cables
2.8.1 Mechanical Installation
Taking the rack installation of the 1 + 1 parallel system with battery module for example, the mechanical installation
method of the parallel system is as follows:
1. The installation method of 1 + 1 parallel POD is the same as that of the UPS. Refer to
2.4.2
Rack Installation for
details.
2. As shown in Figure 2-18, the battery module should be installed at the bottom, the UPS should be installed in the
middle, and the 1 + 1 parallel POD should be installed on the top, so as to facilitate the cable connection and
operation.
Battery module (4 pcs)
1 + 1 parallel POD (1 piece)
UPS (2 pcs)
Figure 2-18 1 + 1 parallel system with battery modules
