Appendices
iTechnical Specifications
NOTE: Due to the wide scope of panel options, we strongly recommend the use of our battery calculation chart which is available on PC disk or as hard copy. The information below should not be used to calculate standby battery size.
Power Supplies |
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Mains input voltage: | 230V AC |
System operating voltage: | 24V DC |
Quiescent current at 24V DC: | 375mA (A1557. A1508, A1575 – no loop cards) |
Quiescent loop card current | 65mA + 1.3 x loop current |
Loop card max. current | 200mA |
Power supply max: | 5 Amps @ 24V DC |
Alarm power output max: | 1 Amp per circuit @ 24V DC (Note 3) |
Auxiliary output max: | 0.5 Amp @ 24V DC (Note 4) |
Battery charger output: | 1.5 Amps (Note 5) |
Battery type: | 24V sealed lead acid |
Output Circuits |
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Alarm circuits: | 2 |
Alarm circuit monitoring: | Open/short circuit (Note 6) |
Repeater output: | Serial data RS485 (Note 7) |
Printer output: | Parallel |
Multiplex inputs/outputs: | 248 (via A1535/A1536 boards) |
Panel Network: | Connection of 15 panels via Network data link |
Alarm fuse rating: | 1 Amp thermal resetable fuse |
Battery fuse rating: | 6.3 Amp (20mm glass) |
Auxiliary fuse rating: | 0.5 Amp (20mm glass) |
Mains fuse rating: | 3 Amp (20mm glass) |
Input Circuits |
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Detection loops: | Cable 1.5mm (max. length - 2km) |
Detection loop fuse rating: | 250mA thermal resetable |
No. of sensors on loop: | 126 maximum (Note 9) |
Relay Outputs |
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2 independent relays are provided which operate as follows:
Fire relay: | 1 double pole changeover, operates on any fire alarm | |
Fault relay: | 1 single pole changeover operates on any fault signal | |
All relay contacts are rated at 24V DC 1 Amp. |
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Cable Terminations |
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Mains terminals: | Shrouded, marked & fused, accept max 2.5mm2 cables | |
Alarm and loop terminals: | Screw terminals, accept max. 2.5mm2 | cables |
All other terminals: | Screw terminals, accept max. 2.5mm2 | cables |
All terminal functions are identified by screen printing on the circuit boards.
Document Ref: Nex8inst.doc/Rev0 09.07.00 | Page 24 of 30 | Originator MC Checked by AC__ |
