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2018
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119
Chapter The external lightning protection system
. this case, the spacing the cable brackets should reduced.TBS
Blitzschutz-Leitfaden
2018
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en
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2020/01/10
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2020/01/10
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2.3 High-voltage-resistant isCon®
conductor
Tasks insulated, high-voltage-resistant con-
ductor
Insulated conductors are used the field external
lightning protection reduce avoid the separation
distance according IEC 62305-3.
Requirements:
• Conductor connection with lightning current carry-
ing capacity the air-termination system, earthing
system standard exposed conductors run to-
wards the earth. mm²)
Normative requirements
Currently only the general requirements for:
• IEC 62561 Lightning protection system Part 1:
Requirements for connection components e.g. cross-sections, equipotential
bonding
• IEC 62561-8: Requirements for components for
isolated LPS
Isolated lightning protection with air-termination rods
isCon system: Areas application application ex-
amples
Insulated conductors are installation solutions for ex-
ternal lightning protection which can used primarily
in locations where the separation distance cannot be
maintained not applied for aesthetic reasons.0 mm
Rounda
50 mm² Diameter mm
Cable mm² Minimum diameter each wire 1.g.2.12.
• Sufficient current carrying capacity through stand-
ard conformant conductor cross-section the ar-
restor (OBO isCon®
= mm², standard requires
min.7 mm
Round 200 mm² Diameter mm
Table 2. light-
ning current carrying capacity the connection
points
• IEC 62305 Protection against lightning Part 3:
Protection structural facilities and persons, e.
arrestor system, min.
• Maintenance the necessary separation distance
(s) within the limits specified the manufacturer
through sufficient electrical voltage resistance the
conductor, both the area the supply point as
well the entire onward course.23: Minimum cross-sections for conductors
a
In certain situations, mm² diameter) can reduced mm² mechanical resistance not primary
criterion.
Areas application:
• Mobile telecommunications antennas
• Computer centres
• Expansions lightning protection systems
• Architectural solutions
• Separation distance cannot maintained
Geometry Minimum cross-sections Comments
Strip mm² Minimum thickness 2
