• Natural elements for down-conductors systems
must executed according IEC 62365-3.2. re-
inforced concrete steel sup-
ports) are used, often not pos-
sible isolate the lightning pro-
tection system and earthing
system.
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Chapter The external lightning protection system
.g.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.
• stressed concrete, the risk impermissible
mechanical influences due exposure lightning
current taken into account.
• Facade elements can also used downcon-
ductors systems, provided that they are electrically
interconnected.5 mm.
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.Example: vertical facade elements
When natural conductors (e.
2.g.
Example: use horizontally connected facade elements
as down-conductor system
Metallic installations may sur-
rounded with insulating material,
e.6). painted layer.
• Their electrical continuity the vertical direction
must meet the requirements.
Pipelines with combustible explosive contents are
not permitted, the seals flange couplings are not
connected that they are electrically conductive.
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
