93-530-70 Issue 0 Page 38 of 44 © Protec Fire Detection PLC 2007
28.0 3300 Technical Specification
Power Supply Mains 230V AC. Nominal (+/-10%).
Integral Charger 1A switch mode, temperature compensated, 250mA battery charge current.
Batteries monitored for disconnection, failure and deep discharge.
Auxiliary 24V output 24V dc, 100mA max, monitored for fuse failure. (fuse self resetting)
Maximum Battery Size 2 x 12V 3.3Ah.
Mains Fuse 1A HRC ceramic 20mm.
Battery Fuse 1.6A F 20mm.
Working Voltage 20V to 30V dc.
Current Consumption 15mA (24V dc. Supply, not in alarm, mains failed, buzzer slow beeping,
General and PSU fault light illuminated) + detector load.
Number of Detector Zones 4 or 8 depending on the model purchased.
Maximum Zone Cable Length 500 Metres
Maximum Zone Cable Capacitance 0.27µF (measured with no end of line fitted)
Maximum Zone Cable Resistance 15Ω per conductor.
Detector Circuit EOL Values Resistive (8.2kΩ) or capacitive (100µF/22Ω).
Maximum Quiescent Zone Load 1.5mA per zone.
Maximum Number of Detectors 20 per zone (smoke or heat)
Maximum Number of Devices 32 (Manual Call Points and Detectors) per zone
Manual Call Point Series Resistor Value 180Ω 5%
Number of Alarm Circuits 4 (open and short circuit monitored).
Alarm Circuit End Of Line Value 10kΩ 1/4W 5%.
Maximum Alarm Load 150mA from each alarm output. Sounders must be polarised and
suppressed.
Class Change Input Activates alarm outputs when connected to 0V.
Remote Alarm Input Activates alarm outputs, internal buzzer and general fire indicator when
connected to 0V.
Global Fault Contacts Rated at 24V dc 1 Amp.maximum
Global Fire Contacts Rated at 24V dc 1 Amp. maximum
Expansion Port Communications 2 wire Communication + 2 wire Power.
Temperature Range 0 to 40 degrees C.
Humidity Limit 85% Non-Condensing.
Environment Meets IP30 if mounted in a dry position that does not exceed the temperature
and humidity limits given.
Mounting 3 or 4 points surface mount.
www.acornfiresecurity.com
www.acornfiresecurity.com