Installation manual

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