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Calculating Current Draw and Standby Battery
SK-NIC Network Interface Card
SK-FML Fiber Optic Multi Mode
SK-FSL Fiber Optic Single Mode
Wireless Modules
SK-WGI Wireless Gateway
Total System Current
Auxiliary Devices
IPDACT-2 IP Communicator
IPDACT-2UD IP Communicator
CELL-MOD/CELL-CAB-SK
Auxiliary Devices Current
Notification Appliance Circuits
5495/5499 Power Supply
Notification Appliances Current
Total current ratings of all devices in system (line A + line B + C)
Total current ratings converted to amperes (line D x .001):
Number of standby hours:
Multiply lines E and F.
Alarm sounding period in hours. (For example, 5 minutes = .0833 hours)
Multiply lines E and H.
Add lines G and I.
2.6.4 Current Draw Worksheet for SD SLC Devices
For each RPS-1000* in the installation, use this worksheet in Table 2.6 to determine current requirements during alarm/battery standby
operation. See individual FACP manual for maximum number of devices.
Device
For each device use this formula:
RPS-1000 Intelligent Power
Module (Current draw from
battery)
Additional RPS-1000
(Daisy-chained to this module)
RPS-1000 / RPS-1000B Manual - P/N 151153:N 08/09/2017
Table 2.5 Current Draw Worksheet for SK SLC Devices
Device
# of Devices
2
3
Table 2.6 Current Draw Worksheet for SD SLC Devices
# of Devices
This column
1*
(7 max.)
Current per Device
Standby/Alarm:
Standby/Alarm:
Standby/Alarm:
Max current using ext supply
Max current SLC Power
Standby:
Alarm:
Standby:
Alarm:
Standby:
Alarm:
Alarm/Standby:
Alarm/Standby:
Alarm/Standby:
Alarm/Standby:
24 VDC
One input circuit:
Both input circuits:
Alarm:
Alarm:
Alarm:
Alarm:
Total standby AH
Total alarm AH
Total ampere hours
required
Current per Device
X
This column
=
Standby
Alarm:
Standby
Alarm:
Before You Begin Installing
Standby
Alarm Current
Current
21 mA
mA
53 mA
mA
79 mA
mA
40 mA
mA
24 mA
mA
93 mA
mA
136 mA
98 mA
mA
155 mA
55 mA
mA
100 mA
mA
mA
mA
mA
mA
mA
mA
mA
15 mA
30 mA
mA
mA
mA
mA
mA
A
H
AH
AH
Standby
Current
Current per number of devices.
40 mA
40 mA
160 mA
10 mA
mA
10 mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
A
H
AH
Alarm Current
160 mA
mA
14
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