Panasonic EBL512 G3 5000, Инструкции по планированию, Страница: 149 / 168

Panasonic Eco Solutions Nordic AB
MEW01472 Rev: - Planning Instructions Fire alarm system EBL512 G3, United version 2.7.x
147
Maximum cable length
100
150
200
250
300
350
400
450
500
550
600
650
700
750
800
850
900
0 40 80 120 160 200 240 280 320
Total COM loop unit current consumption
Cab
le
l
e
n
g
th
Meter
mA
Figure 33. Graphs showing the cable length in relation to the COM loop units' total
current consumption.
NOTE! The graphs start at "0 mA" and 863 m cable length
respectively but graph 1 ends at "320 mA" and graph 2 ends at "350 mA". End of
graph = max. allowed loop current. (863 m cable length = 42.3 ohm.)
NOTE! The graphs are valid for the cable type ELQYB 2 x 1 mm
(0.75mm
2
) with the conductor resistance 24.5 ohm / km. The total
conductor resistance (ohm) = L conductor (ohm) + C conductor
(ohm).
2 x 1 mm (0.75 mm
2
)
24.5 ohm / km