Chapter 7 Earthing and Shielding
GFK-2958E
RSTi-EP User Manual
330
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.
Use of a Clamping Bracket
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.
Summary of Contents for GFK-2958E
Page 1: ...RSTi EP User Manual GFK 2958E November 2017 ...
Page 23: ...Chapter 1 Introduction GFK 2958E RSTi EP User Manual 19 Notes ...
Page 56: ...Chapter 3 Configuration GFK 2958E RSTi EP User Manual 52 Notes ...
Page 183: ...Chapter 5 Detailed Descriptions of I O Modules GFK 2958E RSTi EP User Manual 179 EP 5111 ...
Page 184: ...Chapter 5 Detailed Descriptions of I O Modules GFK 2958E RSTi EP User Manual 180 EP 5111 ...
Page 316: ...Chapter 5 Detailed Descriptions of I O Modules GFK 2958E RSTi EP User Manual 312 Notes ...
Page 330: ...Chapter 6 Installation GFK 2958E RSTi EP User Manual 326 Notes ...
Page 344: ...Chapter 7 Earthing and Shielding GFK 2958E RSTi EP User Manual 340 ...
Page 345: ...Chapter 7 Earthing and Shielding GFK 2958E RSTi EP User Manual 341 Notes ...
Page 385: ...Chapter 8 Web Server GFK 2958E RSTi EP User Manual 381 Notes ...
Page 401: ...Chapter 11 Disassembly and Disposal GFK 2958E RSTi EP User Manual 397 Notes ...
Page 413: ...Chapter 12 LED Indicators and Troubleshooting GFK 2958E RSTi EP User Manual 409 Notes ...
Page 416: ...Chapter 14Accessories and Replacement Parts GFK 2958E RSTi EP User Manual 412 Notes ...