32
UPS for 208 Vac Grid, B120US Installation Guide, doc. rel. 3.0
to the output capacity of the UPS. Figure 12 assumes that the battery fuses can be
easily disconnected, when used in series with a battery circuit breaker, as desired.
4.
Measure the dc voltage at the main terminals of the battery cabinets. Verify that you
obtain values of at least 192 Vdc for each battery cabinet, or at least 384 Vdc across the
main battery CB. The battery set must have a positive (+192Vdc), midpoint and
negative (-192Vdc) pole.
5.
Connect the battery set to UPS’s positive (“+”) battery bus bar, negative (“–“) battery
bus bar, and Neutral bus bar. Refer to Figure 12.
6.
If you are using lithium-ion batteries, contact Gamatronic support for configuration
instructions.
Figure 12: Connecting a Single Battery Set
UPS KVA
20
40
60
80
100 120
UPS KW
18
36
54
72
90
108
DC CURRENT
53
106
159
225 281 338
Table 5: Battery current ratings for semiconductor fuses and circuit breakers
7.
The fuses between the battery cabinets and The UPS (F1, F2, F3, and F4 in Figure 12)
must be
FAST FUSES (SEMICONDUCTOR FUSES)
; for example, the Ferraz Shawmut
A70QS fuse.
8.
For initial startup to take place the battery must be connected to the UPS and available.
