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Consider the General Notes on the Information in the Pepperl+Fuchs Product Catalogs
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Accessories
10
Accessories,
Connectors, Cordsets, Splitters
10
.1
Technical Information
Cable Structure Data
VDE standard 0295 specifies that only the maximum single wire diameter and the corresponding highest-permissible electrical
resistance have to be determined for each cable cross-section.
Cables made of Uninsulated or Tin-Plated Copper Wires
Number of Wires x Wire Diameter [mm]
VDE 0295
Conductor
Cross-
Section
[
mm²]
Single wire
Class 1
Stranded
Class 2
Finely-
Stranded*
Class 5
Extra Finely-Stranded*
Class 6
0.10
14
x0.10
26
x 0.07 50 x 0.05
0.14
18
x 0.10
36
x 0.07
72
x 0.05
0.25
14
x 0.15
32
x 01.0 65 x 0.07 128 x 0.05
0.34
7
x 0.25
19
x 0.15
43
x 0.10
88
x 0.07
180
x 0.05
0.50
1
x 0.80
7
x 0.30
16
x 0.20
28
x 0.15 63 x 0.10 129 x 0.07 258 x 0.05
0.75
1
x 1.00
7
x 0.37
24
x 0.20
42
x 0.15
95
x 0.10
196
x 0.07
384
x 0.05
1.00
1
x 1.13
7
x 0.43
32
x 0.20 56 x 0.15 127 x 0.10 258 x 0.07 512 x 0.05
1.50
1
x 1.38
7
x 0.52
30
x 0.25
84
x 0.15
191
x 0.10
385
x 0.07
768
x 0.05
2.50
1
x 1.78
7
x 0.67
50
x 0.25 140 x 015 320 x 0.10 651 x 0.07 1281 x 0.05
4.00
1
x 2.26
7
x 0.85
56
x 0.30 224 x 0.15 512 x 0.10
1036
x 0.07
6.00
1
x 2.77
7
x 1.05
84
x 0.30 192 x 0.20 765 x 0.10
1561
x 0.07
10.00 1
x 3.57
7
x 1.35
80
x 0.40 320 x 0.20 1275 x 0.10
*
The number of wires in finely and extra finely-stranded cable structures are preferred values.
1
2
3
4
Shield Connection
The type of shield connection is primarily decided by the nature of
the expected interference.
To suppress electrical fields, the shield must be grounded (1) at one end.
However, interference caused by a magnetic alternating field can only be
suppressed if the shield is connected at both ends (2).
A ground loop, including all its known disadvantages, is created when
a shield is connected at both ends. The useful signal is particularly sus-
ceptible to noise on the reference voltage. Triaxial cables (4) combat this
effect. The internal shield is connected at one end, whereas the external
shield is connected at both ends.
Interference of this nature when a cable shield is connected at both ends
is often reduced by also connecting one end of the shield to the refer-
ence potential via a capacitor (3). This breaks the ground loop, at least for
direct currents and low-frequency currents.
