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Planning an installation
LPS − lightning protec-
Max. lightning current
tion class*
peak value
I
200 kA
II
150 kA
III + IV
100 kA
24 | EN
Number of conduc-
tors
1
2
3 and more
1
2
3 and more
1
2
3 and more
Tab 9: Maximum length of the isCon
*
LPS lightning protection classes according to DIN EN 62305 / VDE 0185-305 / IEC 62305
Note!
T he values in the table apply to all type B earthers and for type A
earthers, in which the earth resistance of the neighbouring earthing
electrodes differs by less than a factor of 2. If the earther resistance of
individual electrodes deviates by more than a factor of 2, k
assumed (Source: DIN EN 62305-3:2011, Tab. 12).
Installation for lightning protection class II
As the isCon Pro, isCon Pro+ and isCon Basic systems have a tested
arresting capacity of 150 kA lightning surge current (10/350 μs), a light-
ning protection system of lightning protection class II can run the lightning
current safely from the air-termination system to another arresting system
with a single isCon
length, see Tab. 9).
Fig 14: One isCon
Installation for lightning protection class I
In a lightning protection system of lightning protection class I, one isCon
Premium conductor can be used from the air-termination unit up to the
arresting system to implement the separation spacing (depending on the
required conductor length, see Tab. 9).
Basic
Length for s ≤
0.45 m in air
-
8.52 m
12.78 m
7.50 m
11.36 m
17.05 m
11.25 m
17.05 m
25.57 m
conductors in air
®
conductor (depending on the required conductor
®
conductor for lightning protection class II/I
®
Pro
Premium
Pro+
Length for s ≤
Length for s ≤
0.75 m in air
0.90 m in air
–
11.25 m
14.20 m
17.05 m
21.31 m
25.57 m
12.50 m
15.00 m
18.94 m
22.73 m
28.41 m
34.09 m
18.75 m
22.50 m
28.41 m
34.09 m
42.61 m
51.14 m
= 1 should be
c
OBO Bettermann
®
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