Example Of A Lightning-Protected Structure (Key To Figure Above) - Siemens S7-300 Installation Manual

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The table below explains consecutive numbers in the figure above:
Table 12-11 Example of a lightning-protected structure (key to figure above)
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1
2
3
4
5
6
7
* You can order these components directly from:
DEHN + SÖHNE
GmbH + Co. KG
Elektrotechnische Fabrik
Hans-Dehn-Str.
S7-300 Automation System, Hardware and Installation: CPU 312IFM - 318-2 DP
A5E00203919-01
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lightning arrestor, depending on the mains
system, e.g. TN-S system:
1 piece DEHNbloc/3
, Order No.: 900 110* and
1 piece DEHNbloc/1
, Order No.: 900 111*
surge arresters,
2 pieces DEHNguard 275;
Order No.: 900 600*
Surge arrester,
Blitzductor CT type MD/HF
; Order No.: 919 506* and 919 570*
Digital input modules:
FDK 2 D 60 V; Order No.: 919 993*
Digital output modules: FDK 2 D 5, 24 V;
Order No.: 919 991*
Analog modules:
MD 12 V Blitzductor CT;
Order No.: 919 506 and 919 541
Bus cable shielding mounting device with
EMC spring clamp on the basic unit of
Blitzductor CT; Order No.: 919 508*
Cable for equipotential bonding: 16 sq.
mm
Blitzductor CT, Type B for building
transitions;
Order No.: 919 506* and 919 510*
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High-voltage protection against
direct lightning strike and surge
voltage as of transition 0 <-> 1
High-voltage surge protection at
transition 1 <-> 2
Low-voltage surge protection for
RS485 interfaces at transition
1 <> 2
Low-voltage surge protection,
signal modules I/O at transition
1 <-> 2
Discharge of interference current
Standardization of reference
potentials
High-voltage surge protection for
RS485 interfaces at transition 0 <-
> 1
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12-25