Technical data

936.3347/A/0508/25.72d/e/f/it/es
The antenna must be grounded according to the German VDE regulation EN 50083-1.
The only exceptions to this are exterior antennas
- that are fi tted more than 2 m below the roof edge
- and are also fi tted less than 1.5 m from the building.
Danger may be caused not only by thunderstorms (lightning), but also by static charge and short circuits in the
connected units.
For this reason, the antenna support and the external conductors of the antenna cable must be connected with
the lightning protection of the building via the shortest vertical path and using an appropriate grounding conductor
(if there is no lightning protection system, then they must be connected with the building grounding).
• An appropriate grounding conductor is a single solid wire with a minimum cross section of 16-mm
2
for copper,
25-mm
2
for aluminium or 50-mm
2
for steel or
metallic domestic installations, e.g. continuous metallic water or heating system pipes, provided that they at
least meet the requirements for grounding conductors in terms of cross-section and permanence of the electrical
connection.
• Inappropriate grounding conductors are the exterior conductors of the antenna cable, the grounding
conductor or neutral conductor of the power system.
Antenna cables and grounding conductors must not be routed through rooms used for storing easily fl ammable
substances (hay or straw, for example) or in which an explosive atmosphere can develop (e.g. gases, vapours).
If the planar antenna is used in integrated antenna systems (e. g. distribution systems), the grounding measures
must also be designed in such a way that grounding protection is still maintained if individual units are removed or
replaced.
Warning:
• Grounding and lightning protection work may only be performed by specially trained
electricians due to the dangers associated with defi cient work results!
• Never perform grounding or lightning protection work if you are not a specialist with the
appropriate skills!
The information printed here is not an invitation to non-specialists to perform grounding and lightning protection
work on their own, but is rather intended to provide the specialists commissioned by you with additional
information!
9. Antenna grounding/lightning protection
When you have aligned and attached the antenna, check again to ensure that all screw
connections are secure.
Attach the antenna cable on the antenna support (e.g. with cable retainers) so that it is
not chafed or damaged.