Table of Contents
Advertisement
Power Supply Calculations
Category
CPU2-640/E
*
# NACs in use (0, 1, 2, 3 or 4)
CPS-24/E
KDM-R2 (Backlight on)
LEM-320
†
SLC loop
:
NCA, NCA-2 (Back light ON)
NCA, NCA-2 (Back light OFF)
NCM-W, NCM-F
HS-NCM-W/MF/SF/WMF/WSF/MFSF
TM-4
DPI-232 (Refer to manual**)
APS-6R
APS2-6R
ACPS-2406, ACPS-610
DVC components (Refer to manual**)
AA-30
AA-100, AA-120
ACM-24AT
ACM-48A
AEM-24AT
AEM-48A
Maximum number of LEDs illuminated on
these annunciators during non-fire
conditions:
AFM-16AT, AFM-32A
ACM-16AT, ACM-32A
AEM-16AT, AEM-32A
AFM-16A
ACM-8R (refer to manual**)
LDM (refer to manual**)
FDU-80 LCD-80, LCD2-80
AMG-1, AMG-E
RM-1
FZM-1, MMX-2
RPT-W, RPT-WF, RPT-F
RPT-485W, RPT-485WF
UDACT Communicator
UDACT-2 Communicator
NFV-25/50 (see manual**)
‡
Four-Wire Smoke Detectors
Power Supervision Relay
EOLR-1
FWSG (only if powered by the FWSG 24V
connections TB:A2 and TB:A3)
Notification Appliance powered from Main
**
Power Supply
DHX-501, FSD-751RP, FSD-751RPL
(Duct Detectors with internal relays)
Refer to installation document
CHG-120 Battery Charger
Local Energy Municipal Box
††
Compatible Devices not listed above
Sum each column for totals
*
Maximum current draw for all NACs plus DC output from TB10 and TB2 is 3.0 A during standby.
†
Value represents an SLC's maximum current draw. Refer to device datasheets for individual current draws.
‡
The total regulated load current supplied to four-wire smoke detector and power supervision relays cannot exceed 1.25 A.
**
Enter the total notification appliance draw from the Main Power Supply, excluding the current from APS-6R supplies. Refer to Device Compatibility Document.
†† Refer to manual and/or Device Compatibility Document. See Table 1.1, "Reference Documentation," on page 8 for specific documentation part numbers.
A.2.1 Calculating the Maximum Secondary Power Fire Alarm
Current Draw
Use Table A.3 below to determine the maximum current requirements of secondary power source
during fire alarm conditions. The result obtained is the amount of current that the batteries must be
able to supply to the fire alarm system. Use the result in Table A.4 to determine the size of the
batteries needed for the fire alarm system.
66
Calculation Column 1
Primary, Non-Fire Alarm
Current (amps)
Qty
X [current draw]=
Total
1
x [0.250] =
[
]
x [0.035]
n/a
n/a
[
]
x [0.100]=
0 / 1
x [0.100]=
1/2
x [.200]=
[
]
x [0.400]=
[
]
x [0.200]=
[
]
x [0.110]=
[
]
x [0.400]=
[
]
x [0.110]=
[
]
x [
]=
[
]
x [
]=
[
]
x [
]=
[
]
x [0.016]=
[
]
x [0.016]=
[
]
x [0.002]=
[
]
x [0.002]=
[
]
x [0.0054]=
[
]
x [0.040]=
[
]
x [0.040]=
[
]
x [0.002]=
[
]
x [0.025]=
[
]
x [
]=
[
]
x [
]=
[
]
x [0.0643]=
[
]
x [0.100]=
[
]
x [0.060]=
[
]
x [0.020]=
[
]
x [0.0094]=
[
]
x [0.017]=
[
]
x [0.040]=
[
]
x [0.052]=
[
]
x [
]=
[
]
x [
]=
[
]
x [
]=
[
]
x [0.020]=
[
]
x [0.040]=
[
]
x [
]=
[
]
x [
]=
[
]
x [
]=
[
]
x [
]=
Primary, non-alarm:
Table A.2 System Draw Current Calculations
Calculating the System Current Draws
Calculation Column 2
Primary, Fire Alarm
Current (amps)
Qty
X [current draw]=
Total
1
x [0.250] =
[
]
x [0.035]
n/a
n/a
[
]
x [0.100]=
0 / 1
x [0.100]=
1/2
x [.200]=
[
]
x [0.400]=
[
]
x [0.200]=
[
]
x [0.110]=
[
]
x [0.400]=
[
]
x [0.175]=
[
]
x [
]=
[
]
x [
]=
[
]
x [
]=
[
]
x [0.070]=
[
]
x [0.070]=
[
]
x [0.056]=
[
]
x [0.056]=
[
]
x [0.056]=
[
]
x [0.056]=
[
]
x [0.018]=
[
]
x [0.065]=
[
]
x [
]=
[
]
x [
]=
[
]
x [0.0643]=
x [0.100]=
[
]
x [0.060]=
[
]
x [0.020]=
[
]
x [0.090]=
[
]
x [0.017]=
[
]
x [0.100]=
[
]
x [0.087]=
x [
]=
[
]
x [
]=
[
]
x [
]=
[
]
x [0.020]=
[
]
x [0.040]=
[
]
x [
]=
[
]
x [
]=
[
]
x [
]=
[
]
x [
]=
[
]
x [
]=
[
]
x [
]=
[
]
x [
]=
Primary, alarm:
NFS2-640/E Installation Manual — P/N 52741:P2 7/10/14
Calculation Column 3
Secondary, Non-Fire Alarm
Current (amps)
Qty
X [current draw]=
Total
1
x [0.250] =
[
]
x [0.035]
n/a
x [0.040]
[
]
x [0.100]=
0 / 1
x [0.100]=
1/2
x [.200]=
[
]
x [0.400]=
[
]
x [0.200]=
[
]
x [0.110]=
[
]
x [0.400]=
[
]
x [0.110]=
[
]
x [
]=
[
]
x [0.025]=
[
]
x [0.0013]=
[
]
x [
]=
[
]
x [
]=
[
]
x [0.045]=
[
]
x [0.050]=
[
]
x [0.016]=
[
]
x [0.016]=
[
]
x [0.002]=
[
]
x [0.002]=
[
]
x [0.0054]=
[
]
x [0.040]=
[
]
x [0.040]=
[
]
x [0.002]=
[
]
x [0.025]=
[
]
x [
]=
[
]
x [
]=
[
]
x [0.0643]=
x [0.050]=
[
]
x [0.060]=
[
]
x [0.020]=
[
]
x [0.0094]=
[
]
x [0.017]=
[
]
x [0.040]=
[
]
x [0.052]=
x [
]=
[
]
x [
]=
[
]
x [
]=
[
]
x [0.020]=
[
]
x [0.040]=
[
]
x [
]=
[
]
x [
]=
[
]
x [0.060]=
[
]
x [
]=
[
]
x [
]=
Secondary, non-alarm:
Hide quick links:
Advertisement
Table of Contents
