User Manual 10H52188UM51 - Rev. 1 - 09/2011 55
Liebert NXC Options
Chapter 8 Options
This chapter introduces the options of the UPS.
8.1 Option list
See Table 8-1 for the option list.
Table 8-1 Option list
Option name Model Remark
Communication
cables
UHRK2S671SL4 Liebert® NXC 10/15/20kVA UPS parallel communication cables
8.2 Communication Cables
Communication cable is compulsory in parallel system. See Table 8-2 for cable description. Refer to 3.3.2 for the methods to
connect the parallel cables.
Table 8-2 Description of the communication cable
Type Name Description Appearance
UHRK2S671SL4
Communiation
cable
For N + 1 parallel system, N + 1 communication cables are
needed. For example, two communication cables are needed
in 1 + 1 parallel system; three communicatio cables are
needed in 2 + 1 parallel system; four communication cables
are needed in 3 + 1 parallel system
8.3 Battery Cabinet
For extra long back up time an external battery cabinet is available.
Figure 8-1 Appearance of the battery cabinet
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