BATTERY CHARGER
Use the following formula to calculate the minimum
battery charger size:
CAUTION
Care should be taken when considering the final
voltage at the device during AC power loss. With
loss of AC power, the device voltage will drop over
time as the batteries lose their charge. If extended
periods of AC power loss are to be expected,
either consider a heavier wire gauge than indicated
in Table VI-1, or specify batteries with higher amp-
hour ratings.
VI-5
95-8470
Standby Current
Standby Time*
Standby Amp Hours
X
=
24 Hours
Alarm Current
5 Minute Alarm Time*
Alarm Amp Hours
X
=
0.083 Hours
Sum of Standby and Alarm Amp Hours
=
Multiply by 1.1 (10% Safety Factor)
X
Total Battery Amp Hour Requirement
T0014A
* FM MINIMUM REQUIREMENT FOR EXTINGUISHING SYSTEMS
IS 24 HOURS STANDBY TIME AND 5 MINUTES ALARM TIME.
Table VI–7—Backup Battery Requirements for Automatic Release of Extinguishing Systems Except Deluge
Standby Current
Standby Time*
Standby Amp Hours
X
=
90 Hours
Alarm Current
10 Minute Alarm Time*
Alarm Amp Hours
X
=
0.166 Hours
Sum of Standby and Alarm Amp Hours
=
Multiply by 1.1 (10% Safety Factor)
X
Total Battery Amp Hour Requirement
T0040A
* FM MINIMUM REQUIREMENT FOR DELUGE SYSTEMS IS
90 HOURS STANDBY TIME AND 10 MINUTES ALARM TIME.
Table VI-8—Backup Battery Requirements for Deluge and Pre-Action Applications
Minimum
= Alarm C
Total Amp Hours
Charge Rate
48
Содержание Eagle Quantum 95-8470-05
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