VESDA LaserCOMPACT - Battery Back Up; Backup Battery Size Calculation Sheet

VESDA
®
LaserCOMPACT Product Guide
25
1.9 Battery Back Up
The power supply for the LaserCOMPACT detector may be switched to a back up battery in the
event of the supply being disrupted. The size of the battery back up is determined by local
standards and codes, the total power required by the system, back up time required, allowance
for reduction in capacity with age and expected temperature variations.
Note: It is recommended that batteries be changed as per the battery manufacturer’s
specifications or as per your local codes and standards.
Backup battery size calculation sheet
Table 6 - Calculating the size of backup battery
1.10 Starting Up
Note: A LaserCOMPACT detector must be powered up by VESDA accredited personnel
only
Normal load @ 24 V DC Full alarm load @ 24 V DC
Equipment Load mA Number Total Load mA Number Total
Detector @ 2490 rpm 170 190
Remote Display 90 110
Remote Programmer 50
(backlight off)
110
(backlight on)
Hand-held
Programmer
50
(backlight off)
110
(backlight on)
Other 24 V loads
Total mA Total mA
XX
Standby hours Alarm hours
=
Standby capacity Alarm capacity
Total capacity = Standby + Alarm capacity
Divided by 1000 for standby capacity
Multiplied by battery factor (Normally 1.25)