Siemens S7-400 Installation Manual page 276

Assembling and Installing Systems
Table A-3 High-Voltage Protection of Cables with the Help of Surge Protection Equipment, continued
Ser. Cables for ...
No.
AC TN-C system
AC TT system
2 24 VDC Power Supply
3 MPI bus cable, RS 485, RS 232
(V.24)
4 Inputs/outputs of digital modules
24 V
5 24 VDC power supply module
6 Inputs/outputs of digital modules and
120/230 VAC power supply
7 Inputs/outputs of analog modules up
to 12 V +/–
* You can order these components directly at:
A-24
... equip transition point 0 <–> 1
with:
1 piece DEHNbloc/1 lightning con-
of ductor
phase L to PEN
1 piece DEHNbloc/1 lightning con-
of ductor
phase to N
1 piece DEHNgap B/n N-PE light-
of ning conductor
N to PE
1 piece Blitzductor VT lightning con-
of ductor,
type A D 24 V –
1 piece Blitzductor CT lightning con-
of ductor, type B
DEHNrail 24 FML
1 piece Blitzductor VT lightning con-
of ductor,
type AD 24 V –
2 pieces DEHNbloc/1 lightning con-
of ductor
1 piece Blitzductor CT lightning con-
of ductor,
type B
DEHN + SÖHNE
GmbH + Co. KG
Elektrotechnische Fabrik
Hans-Dehn-Str. 1
D-92318 Neumarkt
S7-400 and M7-400 Programmable Controllers Hardware and Installation
Order No.
900 111*
5SD7 032
900 111*
5SD7 032
900 130*
918 402*
919 506* and
919 510*
901 104*
918 402*
900 111*
5SD7 032
900 111*
5SD7 032
919 506* and
919 510*
A5E00069481-04