All building parts within this angle are protected. Then proceed vertic-
ally
until you meet the curve for your lightning protectio (in
this case: III). Transfer the protective angle the building.
Transfer the protective angle the building.
Protected area
α Protective angle
a Distance furthest point protected area
h Height the building
Installing the air-termination system
Lightning protective angle α
Ridge height m
Lightning protection classes II, III, IV
Diagram assist determining the protective angle accordance with IEC 62305
2nd step: Determine the protective angle
Example:
The height the building (in this case: is
entered onto the horizontal axis the diagram (see
point axis "2" graph above). You can now read the protective angle
(α) off the vertical axis (“1”). our example, the angle
is 62°. All build-
ing parts within this angle are protected.
Determine the protected area follows: transfer the
height the building the diagram and read off the
protective angle. our example, this angle 62° with
protection class III and building height m.
TBS
Blitzschutz-Leitfaden
2018
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en
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2020/01/10
14:42:40
14:42:40
(LLExport_02613)
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2020/01/10
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14:42:54
90
Chapter The external lightning protection system
.1st step: Installing the air-termination system
First, round conductor installed all primary im-
pact points such ridges, crests edges
