• stressed concrete, the risk impermissible
mechanical influences due exposure lightning
current taken into account.
• Their electrical continuity the vertical direction
must meet the requirements.
2.
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2018
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Chapter The external lightning protection system
.
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.g.
• Facade elements can also used downcon-
ductors systems, provided that they are electrically
interconnected. painted layer. re-
inforced concrete steel sup-
ports) are used, often not pos-
sible isolate the lightning pro-
tection system and earthing
system.Example: vertical facade elements
When natural conductors (e.
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.
Pipelines with combustible explosive contents are
not permitted, the seals flange couplings are not
connected that they are electrically conductive.
Example: use horizontally connected facade elements
as down-conductor system
Metallic installations may sur-
rounded with insulating material,
e.
• Natural elements for down-conductors systems
must executed according IEC 62365-3.9 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 2.6).2.5 mm.g
