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Maximum Battery Standby Load
The table below shows the maximum battery standby load for the SK-5208 based on 24 and 60 hours of standby. The standby load calculations of line E in the Current Draw Calculation Worksheet must be less than the number shown in the table for battery size used and standby hours required.
Batteries larger then 17AH will not fit into the SK-5208 cabinet and must be housed in the AB-33 Accessory Battery Cabinet.
Maximum
Battery Standby Load
|
Rechargeable
Battery Size
|
Max.
Load for 24 hrs.
Standby, 5 mins. Alarm |
*Max.
Load for 60 hrs.
Standby, 5 mins. Alarm |
|
7
AH
|
270
mA
|
105
mA
|
|
12
AH
|
475
mA
|
190
mA
|
|
18
AH
|
685
mA
|
270
mA
|
|
33
AH
|
1.1
A
|
450
mA
|
* Required for NFPA 72 Auxiliary Protected Fire Alarm systems for Fire Alarm Service (City Box) and Remote Station Protected Fire Alarm systems (Polarity Reversal) and Digital Alarm Communicator/Transsmitter (DACT).
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WARNING!
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Silent
Knight does not support the use of batteries smaller than those listed
in the above table. If you use a battery too small for the installation,
the system could overload the battery resulting in the installation
having less than the required 24 hours standby power. Use the current
draw worksheet to calculate the correct battery amperes/hour rating
needed for your installation.
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