Cable shield clamps for 35mm top hat DIN rails
EMC shield clamp with double strain relief function for snap-on mounting on 35 mm top hat DIN rail.
Connection between the cable shield and the equipotential bonding bar in PROFINET applications
Notes on mechanical and EMC protection of the shield connection
The PROFINET installation guidelines point out that cables must be fixed / strain-relieved above and below the shield connection. The cable shield must not be used for strain relief. The cable shield is not suitable to absorb mechanical tensile forces. Otherwise it is very likely that the cable shield will be damaged under tensile load. The cable jacket (outer sheath) is suitable for strain relief.
When establishing the shield connection, please note the following:
- Remove the PROFINET cable jacket only for the required connection surface. The PROFINET cable is susceptible to mechanical damage in the area where the jacket has been removed.
- Be careful not to damage the shield when stripping off the PROFINET cable jacket.
- Do not use the shield connection as a strain relief location. This would reduce the contact quality between the shield and the equipotential bonding bar. Exception: installation components specifically designed for this type of application.
- Secure the PROFINET cable above and below the shield connection position. The PROFINET cable can thus be protected against bending. Pay particular attention to strain relief if the cable is exposed to motion.
- Use only connection components that are suitable for the diameter of the stripped cable.
- Do not attach the equipotential bonding bar to coated surfaces. Galvanised or chromed surfaces, for example, are well suited. Use tin-plated, galvanised or otherwise galvanically treated installation material which is protected against corrosion and establishes a permanent high quality contact.
(see pages 81-82)
No tensile load!
icotek EMC shield clamps compliant to the PROFINET installation guidelines:
Cable shield clamps for 30mm C-section rails
EMC shield clamp with double strain relief function for screw mounting on 30 mm DIN C-section rails.
Cable shield clamps for 10 x 3 mm bus bars
EMC shield clamp with double strain relief function for snap-on mounting on 10 x 3 mm bus bars.
Cable shield clamps for screw mounting
EMC shield clamp with double strain relief function for direct mounting via screws, e.g. on metal sheets.