System instructions OBO isCon
®
lightning protection
EN | 53
Assembling the air-termination rod
0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
75
70
65
60
55
50
45
40
35
30
25
17,5
0
80 85 90
20
s [cm]
x [cm]
1
2
A
B
C
Fig 57:
Minimum required distance between the connection element and the
potential connection terminal in air
Legend for Fig 57:
1 Clip distance (x) from the potential connection terminal to the con-
nection element in centimetres
2 Calculated separation distance (s) in centimetres
A isCon BA 45 SW
B isCon Pro+ 75 SW/GR and isCon Pro 75 SW
C isCon PR 90 SW
Example:
If the calculated separation distance is 60 cm, then you can use the
variants isCon
Pro, Pro+ or Premium. Install the potential connection
terminal 120 cm in front of the connection element.
Note!
If the calculated separation distance is less than the appropriate tested
equivalent separation distance in air, you can reduce the distance be-
tween the potential connection terminal and the connection element (x)
accordingly.
If the calculated separation distance
2
is less than 17.5 centimetres (Pro,
Pro+, Premium) and 20 centimetres (Basic), then no additional potential
connection is required in front of the rear connection element.
Note!
The conductor type isCon BA 45 SW (Basic) can be routed with or with-
out potential connection. If the conductor is routed without a potential con-
nection, observe “Mounting variant 2 for isCon BA 45 SW” on page 54.
In addition, observe the following when connecting the equipotential
bonding:
– Do not locate any electrically conductive or earthed parts within the
calculated separation distance s in the area between the potential con-
nection and the connection element (see Fig. 56). These include, for
example, metallic construction parts, conductor brackets and assem-
blies.
– Connect the potential connection terminal to the equipotential bonding
with ≥ 6 mm² Cu or a material with identical conductivity (see Fig. 58).