Siemens FS20 - Determining the Power Supply of the Stations

Assembling the FC2080
Determining the batteries and power supply
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Building Technologies
008843_v_en_
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Fire Safety
2015
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12
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15
12.7.5 Determining the power supply of the stations
Please refer to the table below to find the maximum currents for double and triple
power supplies connected in parallel, in relation to the battery size.
SV24V-150W-A5 power supplies are installed in the FC2080. Depending on the
battery size and power supply, the load distribution within the card cages may need
to be changed.
Permitted current loads for the SV24V-150W-A5
17 Ah 25 Ah 45 Ah 65 Ah 100 Ah
R
i max.
[Ω]
Max. internal resistance of the
battery
0.3
I
min.
[A] Minimum current 0
I
max. a
(single) Max. permanent current to load 4.2 3.9 3.0 2.1 -
I
max. a
[A] (2 parallel)
Max. permanent current to load
for switching two power supply
units in parallel
- - 7.6 7.2 5.6
I
max. a
[A] (3 parallel)
Max. permanent current to load
for switching three power supply
units in parallel
- - - 7.6 7.6
I
max. b
[A] Max. current peak to load 5.0 7.6