21
7
APPENDIX Ⅳ DC 12V WIRE DIAMETER AND
TRANSMISSION DISTANCE RELATION TABLE
The recommended max transmission distance is under the following environments: The wire
diameter is fixed and the DC 12V power voltage loss rate is below 10%. For the device of DC
power supplying, the max allowed voltage loss rate is 10%. All the wires listed in the following
sheet are copper wire. (Copper wire resistance
)
mm
Feet
(
m
)
w
0.8000
1.000
1.250
2.000
5
122.13
(
37.23
)
190.83
(
58.16
)
298.17
(
90.88
)
763.31
(
232.66
)
10
61.06
(
18.61
)
95.41
(
29.08
)
149.08
(
45.44
)
381.66
(
116.33
)
15
40.71
(
12.41
)
63.61
(
19.39
)
99.39
(
30.29
)
254.44
(
77.55
)
20
30.53
(
9.31
)
47.71
(
14.54
)
74.54
(
22.72
)
190.83
(
58.16
)
25
24.43
(
7.45
)
38.17
(
11.63
)
59.63
(
18.18
)
152.66
(
46.53
)
30
20.35
(
6.20
)
31.80
(
9.69
)
49.69
(
15.15
)
127.22
(
38.78
)
35
17.45
(
5.32
)
27.26
(
8.31
)
42.60
(
12.98
)
109.04
(
33.24
)
40
15.27
(
4.65
)
23.85
(
7.27
)
37.27
(
11.36
)
95.41
(
29.08
)
45
13.57
(
4.14
)
21.20
(
6.46
)
33.13
(
10.10
)
84.81
(
28.85
)
50
12.21
(
3.72
)
19.08
(
5.82
)
29.82
(
9.09
)
76.33
(
23.27
)
55
11.10
(
3.38
)
17.35
(
5.29
)
27.11
(
8.26
)
69.39
(
21.15
)
60
10.18
(
3.10
)
15.90
(
4.85
)
24.85
(
7.57
)
63.61
(
19.39
)
65
9.39
(
2.86
)
14.68
(
4.47
)
22.94
(
6.99
)
58.72
(
17.90
)
70
8.72
(
2.66
)
13.63
(
4.15
)
21.30
(
6.49
)
54.52
(
16.62
)
75
8.14
(
2.48
)
12.72
(
3.88
)
19.88
(
6.06
)
50.89
(
15.51
)
80
7.63
(
2.33
)
11.93
(
3.64
)
18.64
(
5.68
)
47.71
(
14.54
)
85
7.18
(
2.19
)
11.23
(
3.42
)
17.54
(
5.35
)
44.90
(
13.69
)
90
6.78
(
2.07
)
10.60
(
3.23
)
16.56
(
5.05
)
42.41
(
12.93
)
95
6.43
(
1.96
)
10.04
(
3.06
)
15.69
(
4.78
)
40.17
(
12.25
)
100
6.11
(
1.86
)
9.54
(
2.91
)
14.91
(
4.54
)
38.17
(
11.63
)
Содержание DH-SD49225I-HC-S3
Страница 1: ...4 inch IR Speed Dome Installation Manual Version 1 0 3 ...
Страница 22: ...15 Figure 3 6 ...