60 Chapter 8 Options
Liebert
®
ITA 16kVA And 20kVA UPS User Manual
User terminal block (Silkprint: USER)
oN oN oA oB oC
mN bN mA bA mB bB
mC
bC
UPS terminal block
Note:
1. Main input: mA, mB, mC, mN; Bypass input: bA, bB, bC, bN; Output: oA, oB, oC, oN;
Grounding: PE.
2. In factory, four copper shorting bars 3 have been used to short terminals between mA and bA,
mB and bB, mC and bC, mN and bN respectively.
PE terminal PE terminal
oN oN oA oB oC
mN bN mA bA mB bB
mC
bC
oN oN oA oB oC
mN bN mA bA mB bB
mC
bC
Rear panel of the 1 + 1 parallel POD
Figure 8-5 Front panel and rear panel of the 1 + 1 parallel POD
8.4 Communication Cables
Communication cable is compulsory in parallel system. See Table 8-8 for cable description.
Refer to 3.4.2 Connecting Parallel Cables for the methods to connect the parallel cables.
Table 8-8 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
8.5 Guide Rail
The guide rail is used in rack installation of UPS, POD (optional) and battery module (optional). The detailed
description is listed in Table 8-9.
Table 8-9 Description of the guide rail
Type Name Description Appearance
UF-RMKIT2438
Guide rail for rack
installation
A set of guide rail includes a left guide rail
and a right guide rail, and its bearing is
50kg. Use the guide rail in the rack
installation. It is applicable to the various
server cabinet, UPS, modularize battery and
POD with standard size
For the rack mode installation procedure, refer to 2.4.2 Rack Installation.
8.6 Double Bus Parts
The LBS cables are compulsory in double bus system. See Table 8-10 for the double bus parts.
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