Sealing End; Sealing End Range At The Supporting Tube Based On The Example Of An Antenna - dehn HVI power Installation Instructions Manual

6.3

Sealing end

The calculated separation distance "s"
from conductive / earthed parts must be
maintained in the sealing end range.
No conductive or earthed parts such as metal con-
ductor holders, structural parts, reinforcement,
etc., may be installed in the sealing end range, for
example:
At the supporting tube between the head piece
Â
and EB connection element (see 6.3.1, page 22)
Variable sealing end at the ring conductor /
Â
capping of the roof parapet (see 6.3.2, page 26)
Sealing end at the building's structure bet-
Â
ween the EB connection element and the earth
connection element.
6.3.1 Sealing end range at the supporting
tube based on the example of an
antenna
The sealing end range ranges from the connection
of the head piece to the EB spring element inte-
grated in the supporting tube (see Fig. 7, detail A
and B) and can be assumed to run along the entire
route of the GRP tube.
Due to the mechanical spring contact, acting as
an EB element, the HVI
miconductive special sheath) is connected to the
supporting tube. To this end, the supporting tube
must be conductively connected to the next equi-
potential bonding system of the installation
The conductive connection between the suppor-
ting tube and the earthed metal antenna mast
is established by means of e.g. a pipe clamp
(Part No. 105 360) (mechanical and electrical
connection).
22
power Conductor (se-
®
connection of
the head piece
Detail A
EB element
Detail B
antenna
mast
connection with
the equipotential
bonding system of
the installation
connection to the
earth-termination
Detail A:
connection of the
head piece
Figure 7 Sealing end range in the supporting tube
α α
s
pipe clamp
supporting tube
HVI power Conductor
®
system
Detail B:
EB spring element
mechanical spring contact