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Power Supply Requirements
Table 6.3 contains three columns for calculating current draws. For each column, calculate the cur-
rent and enter the total (in amperes) in the bottom row. When finished, copy the totals from Calcu-
lation Column 2 and Calculation Column 3 to Table 6.4 on page 41.
Calculate Column 1
Device Type
Primary, Non-Fire Alarm Current
Qty
X (current draw) = Total
Main Circuit
1
Board
Power
[
]
Supervision Relay
NAC/Output #1
NAC/Output #2
NAC/Output #3
NAC/Output #4
Current Draw
from TB4
Terminals 9 & 10
Sum each
Primary Non-Alarm =
column for totals
40
Primary, Fire Alarm Current
(amps)
Qty
X [ 0.091] =
1
X [ 0.025] =
[
[
[
[
[
[
] =
Primary Alarm =
Table 6.3 System Current Draw Calculations
Calculate Column 2
(amps)
X (current draw) =
Total
X [ 0.145] =
]
X [0.025 ] =
]
X [
] =
]
X [
] =
]
X [
] =
]
X [
] =
[
] =
HPF24S Series Power Supplies — P/N 52751:E1 4/14/2011
Calculating the System Current Draw
Calculation Column 3
Secondary, Non-Fire Alarm
Current
(amps)
Qty
X (current draw) = Total
1
X [ 0.065] =
[
]
X [ 0.025] =
[
] =
Secondary Alarm =
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