re-
inforced concrete steel sup-
ports) are used, often not pos-
sible isolate the lightning pro-
tection system and earthing
system.9 Use natural components
Metallic installations can used natural com-
ponents conductor system, provided that:
• Electrical continuity permanent,
• Their dimensions correspond least the values
for standardised conductors (Table 2.
Example: use horizontally connected facade elements
as down-conductor system
Metallic installations may sur-
rounded with insulating material,
e.
Precondition for facade elements and metallic con-
structions:
• Their dimensions must correspond the require-
ments for down-conductors and the thickness of
the metal plates/pipes must least 0.
2.6).
TBS
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Chapter The external lightning protection system
.
Electrically connected reinforced concrete (metal re-
inforcement) can used natural component of
a conductor system if:
• Connection points are provided reinforced con-
crete part,
• the prefabricated concrete parts are interconnected
during mounting the construction site.g.
• Their electrical continuity the vertical direction
must meet the requirements.
• Facade elements can also used downcon-
ductors systems, provided that they are electrically
interconnected.g.
• stressed concrete, the risk impermissible
mechanical influences due exposure lightning
current taken into account.Example: vertical facade elements
When natural conductors (e.5 mm.
• Natural elements for down-conductors systems
must executed according IEC 62365-3.2. painted layer.
Pipelines with combustible explosive contents are
not permitted, the seals flange couplings are not
connected that they are electrically conductive
