2 current draw worksheet, 2 current draw worksheet -8, Table 3-6) – SilentKnight 5104 Digital Alarm Communicator Transmitter 6 Zone User Manual
Page 16: Ion 3.5.2, In table 3-6 for, Ons in table 3-6 to, Table 3-6 mu
Model 5104B Installation Manual
151053-L8
3-8
3.5.2
Current Draw Worksheet
Use this worksheet to determine current requirements during alarm/battery standby operation.
Table 3-6: Current Draw Calculations
Device
Number of
Devices
Current per Device
Standby
Current
Alarm
Current
For each device use this
formula:
This Column
x
This Column
=
Current per number of
devices
5104
1
Standby: 75 mA
75 mA
Alarm: 135 mA
135 mA
5230
3 max
Standby: 25 mA
mA
Alarm: 40 mA
mA
A
Current Subtotals:
mA
mA
Smoke Detectors
Standby: mA
mA
Alarm: mA
mA
Standby: mA
mA
Alarm: mA
mA
Standby: mA
mA
Alarm: mA
mA
Standby: mA
mA
Alarm: mA
mA
Standby: mA
mA
Alarm: mA
mA
Standby: mA
mA
Alarm: mA
mA
B
Current Subtotals:
mA
mA
Notification Appliances
mA
mA
mA
mA
mA
C
Current Subtotals:
mA
D Total current rating of all devices in system (add totals of A-C) x .001:
A
A
E Number of standby hours. (24 or 60 for NFPA 72, chapter 1, 1-5.2.5):
H
F Multiply lines D (standby current) and E.
Total standby AH
AH
G Alarm sounding period in hours. (For example, 5 minutes = .0833 hours)
H
H Multiply lines D (alarm Current) and G totals
Total alarm AH
AH
I Add lines F and H. AH = Ampere Hours
Total AH required
AH