A
VAC VOICE ALARM SYSTEM
TECHNICAL SPECIFICATION
A
VAC Installation and Maintenance Manual • Approved Document No. DAU0000402 Rev 6 • Page 32
POWER SUPPLY AND CHARGER
AC input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .230 V a.c +/- 10% 50/60 Hz
Internal power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27 V d.c. Nominal
Max continuous output current limited to . . . . . . . . . . .5A @ 230 V a.c.
(derate by 500 mA if batteries are charging)
Pulse peak output current limited to . . . . . . . . . . . . . . . .7A @ 230 V a.c.
Supply & battery charger monitored for failure . . . . . . .YES (battery charger is also temperature compensated)
Batteries monitored for disconnection and failure . . . .YES
Batteries protected against deep discharge . . . . . . . . . .YES (Deep discharge cut off approx. 21 Volts)
Battery size and type . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 x 12 V 7 AHr VRLA connected in series
Mains fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .240 V 1 A HRC ceramic 20 mm - compliant with IEC (EN60127 Pt2)
Battery fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 A F 20 mm - compliant with IEC (EN60127 Pt2)
Max Battery Charge current . . . . . . . . . . . . . . . . . . . . . . .0.5 A
INPUTS
Input level for 100 V RMS (1 kHz tone) with gain adjust set to Max. sensitivity
BGM
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .230 mV RMS
BGM with link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.3 V RMS
Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .230 mV RMS
Page with link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.3 V RMS
Fire Mic input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .230 mV RMS
Page PTT Volt Free contacts non triggered state . . . . . . . . . . . . . . . . .Open circuit
Page PTT Volt Free contacts triggered state . . . . . . . . . . . . . . . . . . . . .Closed circuit
Fire Mic PTT non triggered state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6K8
Fire Mic PTT triggered state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1K in parallel with 6K8
Manual inputs M1,M2,M3,RES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 V 1mA to 25 V 2.5 mA (optically isolated)
OUTPUTS
Max Output AUX 24 V (Master only) . . . . . . . . . . . . . . . . . . . . . . . . . .100 mA
Max Output Fire Mic 24 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100 mA
Max Speaker Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100 V 0.6 A RMS (60 W) x 2
Output power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 x 60 W continuous average power
Fr
equency response at 30 W load / line driven from the Fire Mic . .152 Hz to 12 kHz
Fault output relay single pole changeover . . . . . . . . . . . . . . . . . . . . . .1A 30 V
BA
TTER
Y CALCULA
TIONS
Average standby current at full load . . . . . . . . . . . . . . . . . . . . . . . . . . .97 mA
Average alarm current at full load (audio on Fire Mic) . . . . . . . . . . . . .1.2 A
AUX and Fir
e Mics will add to the cur
r
ent drain r
equir
ements
Loudspeaker Monitoring Tone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 kHz
Frequency response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .220 Hz to 6.2 kHz on Page and BGM.
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