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Power Supply Calculations
Category
NFS-320/E
*
# NACs in use (0, 1, 2, 3 or 4)
CPS-24/E
KDM-R2 (Backlight on)
†
SLC loop
:
NCA, NCA-2 Back-light ON
NCA, NCA-2 Back-light OFF
NCM-W/F
HS-NCM-W/MF/SF/WMF/WSF/MFSF
TM-4
DPI-232 (Refer to manual**)
APS-6R
ACPS-2406, ACPS-610
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
FZM-1, MMX-2 Auxiliary power
RPT-W, RPT-WF, RPT-F
RPT-485W, RPT-485WF
UDACT Communicator
UDACT-2 Communicator
NFV-25/50 (see manual**)
FWSG (only if powered by the FWSG 24V
connections TB:A2 and TB:A3)
‡
Four-Wire Smoke Detectors
Power Supervision Relay
EOLR-1
Notification Appliance powered from Main
**
Power Supply
DHX-501, FSD-751RPFSD-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.
54
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]=
1
x [0.200]=
[
]
x [0.400]=
[
]
x [0.200]=
[
]
x [0.110]=
[
]
x [0.400]=
[
]
x [0.110]=
[
]
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 [0.0115]=
[
]
x [0.017]=
[
]
x [0.040]=
[
]
x [0.052]=
[
]
x [
]=
[
]
x [0.040]=
[
]
x [
]=
[
]
x [
]=
[
]
x [0.020]=
[
]
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]=
1
x [0.200]=
[
]
x [0.400]=
[
]
x [0.200]=
[
]
x [0.110]=
[
]
x [0.400]=
[
]
x [0.175]=
[
]
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 [0.090]=
[
]
x [0.017]=
[
]
x [0.100]=
[
]
x [0.087]=
[
]
x [
]=
[
]
x [0.040]=
[
]
x [
]=
[
]
x [
]=
[
]
x [0.020]=
[
]
x [
]=
[
]
x [
]=
[
]
x [
]=
[
]
x [
]=
[
]
x [
]=
[
]
x [
]=
[
]
x [
]=
Primary, alarm:
NFS-320/E/C Installation Manual — P/N 52745:M2 7/1/14
Calculation Column 3
Secondary, Non-Fire Alarm
Current (amps)
Qty
X [current draw]=
Total
1
x [0.250] =
[
]
x [0.035]
1
x [0.040]
[
]
x [0.100]=
1
x [0.200]=
[
]
x [0.400]=
[
]
x [0.200]=
[
]
x [0.110]=
[
]
x [0.400]=
[
]
x [0.110]=
[
]
x [
]=
[
]
x [0.025]=
[
]
x [0.0013]=
[
]
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 [0.0115]=
[
]
x [0.017]=
[
]
x [0.040]=
[
]
x [0.052]=
[
]
x [
]=
[
]
x [0.040]=
[
]
x [
]=
[
]
x [
]=
[
]
x [0.020]=
[
]
x [
]=
[
]
x [
]=
[
]
x [0.060]=
[
]
x [
]=
[
]
x [
]=
Secondary, non-alarm:
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