Siemens SIMATIC ET 200iSP Operating Instructions Manual page 450

Appendix
A.5 Lightning and overvoltage protection
Components of the application example
The following table explains the components of the application example.
Table A-34 Components for overvoltage protection of the application example
Consecutive num‐
ber from the fig‐
ure
①
Overvoltage suppressors 24 V supply:
DEHNguard DG S 75 FM
Article number 952 091* **
DEHNgap DGP C S FM
Article number 952 035* **
Comb rail MVS 1 2
Article number 900 617* **
Pin terminal STAK 2x16
Article number 900 589* **
②
Overvoltage suppressors PROFIBUS RS 485-IS lightning
conductor base part BXT BAS EX,
article number 920 301**
Blitzductor module BXT ML2 BD HF EX 6,
Article number 920 538**
③
Overvoltage suppressor I/Os, depending on the number
of double cores used
Blitzductor base part BXT BAS EX,
Article number 920 301**
Blitzductor module BXT ML4 BD EX 24,
Article number 920 381**
④
Additional terminal for the shield connection of the bus
line
⑤
Equipotential-bonding cable 16 mm
⑥
Equipotential-bonding cable 6 mm
* These components are designed for non-hazardous zones. If these units are installed in hazardous area Zone 1, the com‐
ponents must be installed in a certified Ex d enclosure (flameproof encapsulated). For further information and purchase,
contact:
Siemens AG
DF FA SE
Breslauer Straße 4
90766 Fürth
** Direct purchase of components via:
DEHN + SÖHNE GmbH + Co. KG
Hans-Dehn-Str. 1
D-92318 Neumarkt
http://www.dehn.de (https://www.dehn.de)
450
Component
2 Cu
Cu
2
Meaning
Protection against indirect lightning effects and
overvoltages at zone transition 0
2
Protection against indirect lightning effects and
overvoltages at zone transition 0
2
Protection against indirect lightning effects and
overvoltages at zone transition 0
2
Discharging of interference currents
Standardization of reference potentials
Discharging of interference currents
Operating Instructions, 11/2022, A5E00247483-AK
to 1 and 1 to
B
to 1 and 1 to
B
to 1 and 1 to
B
ET 200iSP