Minicom iCentral, Инструкция по установке и эксплуатации

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iCENTRAL MINICOM INSTALLATION MANUAL 5
MAXIMUM LENGTH FOR CABLE RUNS
The system may be Star Wired from a central point or Loop Wired however the
number of stations on a loop is governed by the length of the loop and also the voltage
output of the power supply used.
The table below shows the relationship between the power supply used, length of a
cable run and the number of stations permitted on the run.
Note: The starting point to determine the length of a cable run is taken from the
station where the plug pack is connected.
CABLE RUN LENGTH V’s NUMBER OF STATIONS ON RUN
Distance Using 13.8V Supply Distance Using 12V Supply No of Stations On Run
200 metres 120 metres One station on run
100 metres 60 metres Two stations on run
65 metres 40 metres Three stations on run
50 metres 30 metres Four stations on run
Note:
These maximum distances can be doubled where required by using spare
conductors in the cable so that two conductors are used for POS and two
conductors are used for NEG.
It is vitally important that the number and type of conductors used for POS and
for NEG are exactly the same.