Schneider Automation Interbus Fiber Optic CommunicationsAdapter Instrukcja Użytkownika Pobierz pdf (Strona 26)

EMC Measures for the Communications Adapter

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

35517.5

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