Siemens Hicom 150 E Office Service Manual page 70

Hicom 150 E Office Rel.1.0 Service Manual - 3.2 Central boards
Figure 3-11 Front and rear view of the USVI, settings
Batteries manufactured by Sonnenschein and Yuasa require a setting of 2.3 V per cell.
Setting the bridging time for the USVI
The bridging time during a power failure depends on the system configuration, the number of analog
and/or digital terminals, the uninterruptible power supply connected and the ratings of the batteries
installed.
The consumption values and diagrams below are measured using one board. The power consumption
for the boards in the field may deviate slightly from the measured values due to board-specific
tolerances.
The following conditions apply to the discharge rates in
New batteries
Ambient temperature of approx. 23 ºC
(deviations in temperature and low temperatures, in particular, result in a reduction in capacity)
Constant load conditions
Charging voltage 55.2 V DC
Discharge rates for the Hicom 150 E OfficePro battery pack
Figure 3-12 Discharge rates for the Hicom 150 E OfficePro battery pack
The bridging time for a system cabinet is determined by adding together all of the currents for the
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Figure 3-12: