Page 10 Electrical Connections
Electrical Connections
The RTU is powered at low voltage (12V
DC
120mA) by a battery-operated
power supply module (RTU-Qxx). When determining the correct size for
power cables, refer to the table below.
Type of cable Lengt h (m) in relat ion t o effect ive load
WG mm2 ohm/Km 100 [mA] 200 [mA] 500 [mA] 1 [A] 2 [A] 5 [A]
12 3,3 5,7 1754 877 351 175 88 35
14 2 8,8 1136 568 227 114 57 23
16 1,3 14 714 357 143 71 36 14
18 0,9 21 476 238 95 48 24 10
20 0,6 34 294 147 59 29 15 6
22 0,35 52 192 96 38 19 10 4
24 0,2 85 118 59 24 12 6 2
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