Panasonic EBL128 Planning Instructions page 132

Fire alarm system
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Panasonic Electric Works Nordic AB
MEW01090
Rev: 3
Ohm
45
40
35
30
25
20
15
10
5
0
Figure 34. Graphs showing the total conductor resistance in relation to the
COM loop units' total current consumption. NOTE! The graphs start at "0
mA" and 42.3 ohm respectively but graph 1 and 2 ends at "180 mA" and
graph 3 ends at "350 mA". End of graph = max. allowed loop current. (42.3
ohm = 863 m cable length.)
Maximum conductor resistance
40
80
120 160 200 240 280 320
Total COM loop unit current consumption
NOTE!
The graphs are valid for the recommended cable type
ELQYB 2 x 1 mm (0.75mm
/ km. The total conductor resistance (ohm) = conductor "L" (ohm) +
conductor "C" (ohm).
130
EBL128 Planning Instructions V1.1.x
2
) with the conductor resistance 24.5 ohm
mA

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