Siemens FC901-R3, Installation, Operation And Maintenance Manual

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BATTERY SIZE CALCULATIONS
System Current Draw Break down
System Current Draw Components Standby(A) Alarm(A)
Main board 0.1590 0.1864
NAC 0 C1
SLC C2 C3
Auxiliary power C4 C5
City tie module 0.0017 0.0158
SLC Current Draw Break down
SLC Current Draw Components Standby(A) Alarm(A)
HFP-11 / 8713 0.00140 0.00140
HFPO-11 / 8710 0.00140 0.00140
HFPT-11 / 8712 0.00140 0.00140
OOHC941 0.00075 0.00075
OOH941 0.00068 0.00068
OH921 0.00030 0.00030
OP921 0.00030 0.00030
HI921 0.00028 0.00028
FDCIO42 0.00120 0.00120
HMS / 8700 -S/D/M 0.00140 0.00140
HTRI-S / 8702 0.00140 0.00140
HTRI-D / 8703 0.00140 0.00140
HTRI-R / 8704 0.00140 0.00140
HZM / 8705 0.00140 0.00140
HCP /8706 0.00140 0.00140
ILED / 8726 0.00140 0.00140
FDOOTC441 0.00075 0.00075
FDOOT441 0.00068 0.00068
FDOT421 0.00030 0.00030
FDO421 0.00030 0.00030
FDT421 0.00028 0.00028
ABHW-4B 0.00030 0.00030
ABHW-4S 0.00030 0.00030
Total Standby Current = 0.1590 + C2 + C4 + 0.0017(if used)
Total Alarm Current = 0.1864 + C1 + C3 + C5 + 0.0158(if used)
Where
C1 = NAC1 c NAC2 current, should be less or equal to 2.5A.
C2 = ∑quantity of each type of detector x standby current/each
C3 = ∑quantity of each type of detector x alarm current/each
C4 = External device current draw through Aux1 and Aux2 in standby stage, either one of
Aux1 and Aux2 should be less than or equal to 0.75A.
C5 = External device current draw through Aux1 and Aux2 in alarm stage, either one of Aux1
and Aux2 should be less than or equal to 0.75A.
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