ELEKTRA
SelfTec
®
Selection
Pipeline systems, sprinkler systems, etc.
Length of the heating cables depends from:
• pipe’s diameter,
• min. ambient temperature on the installation site.
Value 1 signifies parallel positioning of the cable
along the pipe. Values higher than 1 signify the
length of the heating cable per 1 m of heated
pipe. In this case, the cable should be spiralled
along the pipe.
Table 1. Length of the heating cable per 1 m of the heated pipe
½
¾
1
1¼
1½
2
-10
length
[m]
1
1
1
1
1
1
spiraling
ratio [cm]
0
0
0
0
0
0
-15
length
[m]
1
1
1
1
1
1
spiraling
ratio [cm]
0
0
0
0
0
0
-20
length
[m]
1
1
1
1.1
1.2
1.5
spiraling
ratio [cm]
0
0
0
29
23
17
-25
length
[m]
1
1
1
1.3
1.4
1.7
spiraling
ratio [cm]
0
0
0
16
15
14
-30
length
[m]
1
1.1
1.3
1.6
1.8
2.2
spiraling
ratio [cm]
0
18.5 12.5 10.5
10
9.5
Pipe’s diameter [inches]
Ambient temperature [
°C]
6
Содержание Selftec
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