Vertiv Liebert EXM2 - Battery Maintenance

Item s Unit
UPS rated pow er (kV A)
100 12 0 15 0 16 0 2 00 2 50
CSA of connection cable mm
2
120 120 150 185 2*150 2*185
44-block
battery
Maximum battery discharge current at full
load
A 235 285 355 380 475 595
Reference rated current of BCB A 400 400 400 400 500 630
CSA of connection cable mm
2
120 120 150 185 2*150 2*185
Table 7.4 BCB rated cu rrent and battery max. discharge current at full load (recom m ended) (con-
tinued)
N O T E: C urrent calculation is according to the D C/AC efficiency of 0.94 and EOD voltage of 1.6V /cell.
N O T E: It is recom m ended to use a DC breaker, w ith D C rated voltage of the breaker no less than the
total voltage at th e battery end, and the rated breaking cap acity lim it being 35kA . R efer to Fig ure 7.7
below for the connections betw een the battery, B CB and U PS.
Figure 7.7 Connections betw een battery, BCB and U PS (2 w ire at battery side, battery consisting of
30 to 44 -block)
7.14 Battery Maintenance
For the battery maintenance and maintenance precautions, refer to IEEE-Std-1188-2005 and the relevant manuals provided
by the battery manufacturer.
N O T E: P eriodically check the screw s of the battery con nection parts and confirm that they are firm ly
tighten ed. If there is any loosened screw , tighten it im m ediately.
N O T E: E nsure that all safety devices operate norm ally, and that the battery m anagem ent param eters
are set properly.
N O T E: M easure and record the air tem perature inside the battery room .
N O T E: C heck to ensu re that the battery term inals have no dam age or heat generating trace, and the
battery enclosure and term inal shields are intact.
7 Battery
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Vertiv™ Liebert® EXM2 UPS User Manual