15073 OWNER’S MANUAL
447179 Issue 1 Rev. A
36
6.2 BATTERY SIZE CALCULATIONS
Standby Current (A.)
Alarm Current (A.)
15073 Control Unit
DIP Switch SW1-4 off 0.035
DIP Switch SW1-4 on 0.015
0.140
4-wire Smoke Detectors
Catalog #
Quantity
X Current (A.)
Standby
X =
+
NA
Alarm
X =
NA
+
Standby
X =
+
NA
Alarm
X =
NA
+
End of Line Relay
Catalog #
Quantity
X Current (A.)
X =
+
+
X =
+
+
Door Holders
Catalog #
Quantity
X Current (A.)
X =
+
N/A
X =
+
N/A
Notification Appliances
Catalog #
Quantity
X Current (A.)
X =
NA
+
X =
NA
+
X =
NA
+
X =
NA
+
Other =
+
+
TOTAL
Total Standby Current
(from above)
Hours of Standby
Required per
NFPA 72 Standard
(4, 24 or 60)
A.H. for Standby
(without AC
Reporting Delay)
A.H. for AC Reporting Delay
6 Hour = 0.240 AH
15 Hour = 0.600 AH
24 Hour = 0.960 AH
A.H. for Standby
A.
x ____ Hours
=
+
=
Total Alarm Current
(from above)
5 Minutes of Alarm Operation
per NFPA 72 Standard*
AH for Alarm
A.
x 0.0833 Hours
=
A.H. for
Standby
A.H. for
Alarm
Calculated
A.H.
De-rating
Factor
A.H. Required
Battery Capacity
+
=
X 1.25
=
Notes:
1.
The Alarm current must never exceed 6.14 Amps
2.
The following states the maximum standby current allowed:
[When the Auxiliary Power Output is programmed to shutdown on AC power fault (SW1.4-ON), up to 3.015 Amps is allowed.]
Maximum Standby Current (A.)
Standby
Hours
7AH
10AH
15.0AH
4
1.272
1.872
2.872
24
0.212
0.312
0.478
24 (a)
0.202
0.302
0.468
60
0.084
0.124
0.191
60 (b)
0.074
0.114
0.181
60 (c)
0.068
0.108
0.175
(a). AC Reporting Delay set for 6 Hours
(b). AC Reporting Delay set for 15 Hours
(c). AC Reporting Delay set for 24 Hours
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