Battery Capacity Calculations; Uk Requirements; Norwegian & Danish Requirements; Swedish Requirements - Pyronix Matrix Series Installation Manual

Matrix 832 / 832+ / 424

1.2 Battery Capacity Calculations

Maximum Battery recharge time must not exceed 72 hours to satisfy EN50131-6.

1.2.1 UK Requirements

In the event of mains failure BS4737 Part 1, Section 7.2.1, specifies that a stand-by battery should be able to
power the system for a non-alarmed period of 8 hours. The typical Local Authority specified maximum bell
alarm period is 20 minutes.
Non-alarmed condition 7 hrs 40mins = 7.67Hrs:
Control panel
Keypad
Detectors (8 detectors at 15mA each)
External sounder
External strobe
Total current
Amp/hour capacity
Alarmed condition 20mins = 0.33Hrs:
Control panel
Keypad
Detectors (8 detectors at 15mA each)
External sounder
External strobe
Total current
Amp/hour capacity
Minimum battery capacity = 2.41A + 0.25A
WARNING: Consult each product's instructions for the actual current values.
1.2.2 Norwegian & Danish Requirements
Required capacity = (18 x A) + (0.5 x B)
Where:
A = Maximum non-alarmed total system current.
B = Maximum alarmed total system current.

1.2.3 Swedish Requirements

Required capacity = 12 x A
Where:
A = Maximum total system current.
Page 4
Example Calculation
0.130A
0.015A
0.120A
0.050A
0.000A
0.315A
0.315A x 7.67h = 2.41Ah
0.130A
0.015A
0.120A
0.350A
0.150A
0.765A
0.765A x 0.33h = 0.25Ah
2.66Ah
RINS428-5