Panasonic MEW01 351 Planning Manual page 149

Panasonic Electric Works Nordic AB
MEW01351 Rev: -
Meter
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Figure 31. 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.)
Planning Instructions Fire alarm system EBL512 G3, V1.1.x
Maximum cable length
80 120 160
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).
147
2 x 1 mm (0.75 mm
24.5 ohm / km
200 240 280
2
)
320
mA