Radionics D9024, Installation Instructions Manual

Page: 14 / 17

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1997 Radionics All rights reserved
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The Radionics logo is a registered trademark of Radionics,
1800 Abbott Street, Salinas, CA 93901, USA
74-07649-000-B 01/97
D9024/D10024 Installation
Page 14 of 17
D.3. Standby Batteries Installation
Caution: Battery lead connections are not power limited.
D.3.a. Standby Battery Selection
The D9024 and D10024 panels supervise and charge the two 12
V
sealed lead-acid batteries
that are the standby power source. Several batteries are available from Radionics, and battery
selection will depend on system design. Use the Current Rating Chart to select the correct
batteries.
1000
A = 1 mA
1000 mA = 1 A
AC Power On
Normal Current
A
AC Power Off
Min. Current
B
Alarm
Max. Current
C
Model
Number
Qty Each
Unit Total Each
Unit
Total
mA
Each
Unit Total
mA
D9024
D10024
1 324 mA 325mA 325 mA 325mA 480mA 480mA
D9067 42 mA x Qty 42mA x Qty 42mA 42mA x Qty
D9054 1 40 mA 40mA 40mA 40mA 40mA*
41.5mA
D321/322 (360 A) .360mA x Qty (360 A) .360 mA x Qty (360 A) .360 mA x Qty
D321/323 (290 A) .290mA x Qty (290 A) .290 mA x Qty (290 A) .290 mA x Qty
D321/324 (280 A) .280mA x Qty (280 A) .280 mA x Qty (280 A) .280 mA x Qty
D326 (300 A) .300mA x Qty (300 A) .300 mA x Qty (300 A) .300 mA x Qty
D327 (320 A) .320mA x Qty (320 A) .320 mA x Qty (320 A) .320 mA x Qty
D329 (280 A) .280mA x Qty (280 A) .280 mA x Qty (280 A) .280 mA x Qty
Other devices connected to the system not listed above
x Qty x Qty x Qty
x Qty x Qty x Qty
x Qty x Qty x Qty
x Qty x Qty x Qty
x Qty x Qty x Qty
x Qty x Qty x Qty
x Qty x Qty x Qty
Total
A
mA Total
B
mA
Five in Alarm** 23.6mA
Total
C
mA
milliamps = mA
microamps = A
* Add 1.5 mA per output when flashing
** The panel latches on to the first five devices in alarm and continues polling the balance of the devices. Five times 5 mA alarm
current equals 25 mA. These five devices normally draw a minimum . 280 mA each. 25 mA minus 1.40 mA (5 x .280) equals
23.6 mA added to the alarm total
.
Table 5: Current Rating Chart for Standby Battery Calculations
Use battery ampere hour (Ah) calculations to verify compliance with standby requirements. Central
Station or Local systems require 24 hours of standby plus five minutes of alarm operation at the end
of that period. Local Systems require two batteries.
The following formula converts mA to Amperes, and includes factors for the five minute alarm
period and the depletion of battery capacity with age.
Local Systems Ampere Hour Calculation Formula
Total B x 24 (hours) + Total C x .083 (hours) = Total Ah
1000 1000
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