case direct
strike the insulated air-termination system, partial
lightning currents can occur the cable due the in-
crease potential earth and presence different
earthing systems. Careful use should therefore be
made lightning arrestors this area.TBS
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The insulated structure means that partial lightning
current able flow through the antenna cable The
precondition that the separation distance (s) is
maintained.
Busbar
Coaxial surge protective devices (variable)
Shielded building
Transmitter/receiver
Connection lug
Foundation earther
Antenna
Energy cable
Data cable
Coaxial cable
Air-termination system with separation distance (s)
Insulated lightning protection antenna system and various earthing systems
TBS
Blitzschutz-Leitfaden
2018
/
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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247
Chapter The internal lightning protection system
. order to
avoid arcing from the shield the cable onto the sig-
nal line, the lightning arrestor equalises the potentials
of the shield and the signal line. The power and data cables must integ-
rated into the lightning protection equipotential bond-
ing the entry the building
