34 1200C-2000C Fire Alarm Control Panel, Repeater, and Black Box Installation Manual
Supplementary electrical information
FR1200C-2000C FP1200C-2000C
I min 250 mA 250 mA
I max. a 1 A 1 A
I max. b 3.5 A 4 A
Ri max 0.5Ω 0.5Ω
Battery voltage (final) 21 V 21 V
Battery voltage (fully charged) 27.3 V at 20ºC (36mV/ºC) 27.3 V at 20ºC (36mV/ºC)
Batteries 7 Ah to 26 Ah 7 Ah to 45 Ah
Battery capacity calculation
Battery capacity is calculated with the following formula:
C = (Standby current
×
Standby time) + (Alarm current
×
Alarm time)
Calculation example for 24 hours standby time and 30 minutes in alarm:
System data:
• 1 x zone module
• 250 mA at FEP2000N auxiliary output
• 1 x internal printer (not supplied)
• No modem
• 2 x loops with 100 devices per loop
• 100 mA at SD2000 sounders output
Status System Aux. Printer Modem Loops* Sounders Total
Standby 200 mA 0.25 A 100 mA 0
340μA × 100 × 2
= 68 mA
0 618 mA
Alarm
200 mA +
100 mA =
300 mA
0.25 A 100 mA 0
340μA × 100 × 2
+ (80 mA × 2) =
228 mA
100 mA 978 mA
C = (0.618 A × 24 Hrs) + (0.978 A × 0.5 Hrs) = 15.312 Ah.
Closest value is 18 Ah.
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