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Note:
Another area of concern as regards shield contact is the flow within the conductor.
Temperature changes caused by the current lead to changes in the conductor cross-
section. A rigid contact can therefore only be partially effective. A self-adjusting contact is
what is really required.
7.1.3 Effective shielding
It is important that the shielding is not positioned on the earth of the connected component, but on
the protective earth. In the case of components that are installed in a metal housing, the shielding
must be positioned to this housing. If no earthed housing is available, the shielding is positioned on a
separate earth.
When installing ground connections on shielding, it is generally also important that no earth loops
are created. The smaller the earth loop, the less the danger of the induction of interference voltages.
It is therefore most suitable to have a purely neutral-point installation.
The following sketches show the possible shielding connections to protective earth.
A one-sided connection of the shielding protects against capacitive coupling of interference voltages.
If you use a two-sided shielding connection, make sure that compensating current (different earth
potentials) does not flow through the cable shield.
GFK-2958E
Use of a Clamping Bracket
RSTi-EP User Manual
Chapter 7 Earthing and Shielding
330
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