Schneider Automation Interbus Fiber Optic CommunicationsAdapter Instrukcja Użytkownika Strona 26

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EMC Measures for the Communications Adapter
20
24
A.1 Overvoltage Protection for Remote Bus Lines
(lightning protection)
To protect transmission systems from flashover voltage surges (e.g. lightning),
the remote bus line should be equipped with overvoltage protectors (lightning
arrestors) whenever it is installed outside a building. The nominal discharge
current should be at least 5 kA, for instance by using a type ARE, Cat. Nr. 919 232
made by
Dehn und Söhne
Postfach 1640
92 306 Neumarkt, Germany
or Dehn und Söhne
Hans- Dehn- Str. 1
92 318 Neumarkt, Germany
Protecting a remote bus cable requires three ARE lightning arrestors per building.
Figure 5 Circuit layout and dimensions of the ARE lightning arrestor
88
35517.5
45
90
IN
OUT
3
4
OUT
1
2
IN
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