Battery Capacity Calculations - Pyronix Matrix 424 Installation Manual

4.4 Battery Capacity Calculations

Maximum Battery recharge time must not exceed 72 hours to satisfy EN50131-6.
In the event of mains failure
EN50131-1:2006+A1:2009 specifies
that a stand-by battery should be
able to power the system for a non-
alarmed period of
providing that the prime power
source fault is notified to an alarm
receiving centre. The typical Local
Authority specified maximum bell
alarm period is 15 minutes.
WARNING: Consult each product's instructions for the actual current values.
When all parts are working normally, this equipment in combination with the PSTN and suitable ARC
RINS918-6
EXAMPLE
CALCULATION
Control panel
Keypad
8 PIRs (15mA each)
12 hours,
External sounder
External strobe
Total current
Amp/hour capacity
Minimum battery capacity: 3.22Ah + 0.29Ah = 3.51Ah
equipment will meet the requirements of ATS2.
Matrix 424, 832, 832+ Installation Manual
Non-alarmed condition
11 hrs,45 mins=11.75 Hrs
0.200A
0.050A
0.120A
0.050A
0.000A
0.420A
0.420A x 11.75h =
4.94Ah
For electrical products sold within the European
Community. At the end of the electrical
products life, it should not be disposed of
with household waste. Please recycle where
facilities exist. Check with your Local Authority
or retailer for recycling advice in your country.
Alarmed condition
15mins=0.25Hrs
0.200A
0.050A
0.120A
0.350A
0.150A
0.870A
0.870A x 0.25h =
0.22Ah
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