Panasonic MEW01 351 Planning Manual page 148

Panasonic Electric Works Nordic AB
MEW01351 Rev: -
Ohm
45
40
35
30
25
20
15
10
5
0
Figure 30. Graphs showing the total conductor resistance in relation to the
COM loop units' total current consumption. NOTE! The graphs start at "0
mA" but graph 1 ends at "320 mA" and graph 2 ends at "350 mA". End of
graph = max. allowed loop current. (42.3 ohm = 863 m cable length.)
Planning Instructions Fire alarm system EBL512 G3, V1.1.x
Maximum conductor resistance
40 80 120
Total COM loop unit current consumption
NOTE! The graphs are valid for the cable type ELQYB 2 x 1 mm
2
(0.75mm ) with the conductor resistance 24.5 ohm / km. The total
conductor resistance (ohm) = L conductor (ohm) + C conductor
(ohm).
146
2 x 1 mm (0.75 mm
24.5 ohm / km
160 200 240
2
)
280 320
mA