necessary protective angle and
spacings grids and arresters) more involved for
lightning protection class systems than for lightning
protection class systems. This corresponds the re-
quired lightning protection class (Table 1.g. Effi-
ciency lightning protection class the highest at
98%, and lightning protection class the lowest at
79%.
The building’s required risk level determined the
basis the risk lightning strike and the damage
that can expected.TBS
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1.g. LPS
TBS
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43
Chapter General introduction
. claim
statistics from property insurance companies.
The local risk determined multiplying the fre-
quency lightning strikes with the likelihood dam-
age and factor cover the likely loss/extent of
damage.4).
Alternatively, the lightning protection class can de-
termined the basis statistical data, e.
The cost and time involved erecting lightning pro-
tection system (e. Ger-
many, the standard DIN 62305-2 includes three
national supplements containing additional information
on risk management for example, Supplement 2
(Calculation aids for estimating the risk damage for
structures), which offers assistance with the often
complicated process assessing the risk damage.4: LPL vs.7 Lightning protection risk analysis
and categorisation lightning pro-
tection class
The risk lightning strikes can determined car-
rying out risk analysis according IEC 62305-2.
Risk level (LPL lightning protection level) Lightning protection class (LPS class lightning protection system)
I I
II II
III III
IV IV
%
of
lightning
strikes
Lightning amplitude [kA] positive and negative lightning
Lightning current parameters according the risk level (LPL) accordance with DIN VDE 0185-305-1
Table 1
