Technical data

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Potenzialausgleichsschiene
Netzanschluss
Potenzial-
ausgleichs-
leitung
Potenzialausgleichsschiene
Erdungs-
anschluss
Erdungs-
leitung
Potenzial-
ausgleichs-
leitung
The standard says that
within the hatched area
antenna grounding
is not compulsory.
Antenna grounding/lightning protection
Grounding
conductor
Grounding
connection
Equipotential bonding rail
Equipotential
bonding
cable
Equipotential bonding rail
Mains connection
Equipoten-
tial bond-
ing cable
Because of the serious consequences if the work
is not done properly, grounding and lightning
protection work may be performed only by specially
trained electricians!
Never perform grounding and lightning
protection work if you are not a specialist with
the appropriate skills!
The instructions printed here are not an
invitation to non-specialists to perform grounding
and lightning protection work on their own account;
they are meant solely as additional information for
the specialists whom you employ!
The antenna must be erected to DIN EN 60728-11 and grounded
as specifi ed. The grounding requirement is inapplicable only to
those antennas:
– more than 2 m below the edge of the roof
– and at the same time less than 1.5 m from buildings.
For grounding, the mast must be connected by means of a suitable
ground conductor to the lightning protection system of the building,
using the shortest route. If no lightning protection system is availa-
ble: to the building‘s ground conductor.
Connection to the lightning protection system may be made only
by a qualifi ed lightning protection system installation engineer.
a) Suitable as ground conductors are:
– a single solid wire with a cross-section of at least 16 mm²
copper, at least 25 mm² aluminium or at least 50 mm² steel.
b) Unsuitable as ground conductors are:
- b) Unsuitable as ground conductors are:
- the outer conductors of antenna cables
- metallic domestic installations (such as the metal pipe-
work of a water or heating system), since the permanence
of the electrical connection cannot be guaranteed
- or the protective ground conductor or neutral conductor of the
mains power supply
c) Routing of ground conductors
• Antenna cables and grounding conductors must not be routed
through rooms used for storing easily fl ammable substances
(such as hay or straw) or in which an explosive atmosphere
can develop (such as gases, vapours).
• If the parabolic antenna is used in an integrated antenna sy-
stem (e. g. a distribution system), the grounding measures
must also be designed in such a way that grounding protection
is still maintained if individual units are removed or replaced.
Hazards may be caused not only by thunderstorms (lightning), but
also by static charges and short circuits in the connected units.
For safety reasons therefore in general for all antenna systems
an equipotential bonding conductor of 4 mm² copper should be
provided.
The cable screens of all coaxial antenna downlink cables must be
connected to the mast with an equipotential bonding conductor.