TBS
Blitzschutz-Leitfaden
2018
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Example:
There electric field between different compon-
ents system. The parasitic capacitances cause in-
terference currents that affect nearby cables:
Transmitter
Data cable
Nearby cable with potential difference
Parasitic capacitance
Interference currents
Disturbed signal
Effect capacitive coupling transformer
An unconnected shield does not
protect the system from the influ-
ence interference such as:
• Crosstalk
• Inductive coupling
• Capacitive coupling
The voltages and relate absolute protective
earth. Parasitic capacities
occur for example the range. The resulting
interference voltage overlaps with the input voltage
and disrupts signal transmission.
TBS
Blitzschutz-Leitfaden
2018
/
en
/
2020/01/10
14:42:40
14:42:40
(LLExport_02613)
/
2020/01/10
14:42:54
14:42:54
227
Chapter The internal lightning protection system
. Due the parasitic capacitances Cp, the cur-
rent flows via the transmitter earth
