A-5 Surge Protection Components For Lightning Protection Zones 2 <--> 3 - Siemens SIMATIC S7-400 Installation Manual
Automation system, hardware and installation
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- Reference manual (472 pages) ,
- Installation manual (316 pages) ,
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Low-Voltage Protection Elements for 2<- -> 3
For the transition points between lightning protection zones 2 <--> 3 we
recommend the surge protection components listed in the table below. This
low-voltage protection must be used in S7-400 for CE compliance.
Table A-5
Surge Protection Components for Lightning Protection Zones 2 <--> 3
Ser.
Cables for ...
No.
1
3-phase TN-C-System
3-phase TN-S system
3-phase TT system
AC TN-S system
AC TN-C system
AC TT system
2
24 VDC Power Supply
3
Bus cable
MPI RS 485
•
RS 232 (V.24)
•
4
Inputs of digital modules
24 VDC
•
120 VAC
•
230 VAC
•
5
Outputs of digital modu-
les 24 VDC
6
Outputs of analog modu-
les up to 12 V +/--
*
You can order these components directly at:
Automation System S7-400 Hardware and Installation
A5E00850741-01
... .. equip transition point
2 <- -> 3 with:
3 pieces of
DEHNguard 275 surge arresters
4 pieces of
DEHNguard 275 surge arresters
3 pieces of
DEHNguard 275 surge arresters
phase L1/L2/L3 to N
1 piece of
DEHNgap C N-PE surge N to PE
2 pieces of
DEHNguard 275 surge arresters
1 piece of
DEHNguard 275 surge arresters
1 piece of
DEHNguard 275 surge arresters
phase L to N
1 piece of
DEHNgap C N-PE surge N to PE
1 piece of
Blitzductor VT lightning conductor,
type AD 24 V
Blitzductor CT surge arrester, type
•
MD/HF
1 piece of
per conductor pair low-voltage
•
protection FDK 2 12 V
1 piece of
Low-voltage surge arrester,
type FDK 2 60 V on insulated rail
2 pieces of
Surge arresters
DEHNrail 120 FML
•
DEHNrail 230 FML
•
1 piece of
Low-voltage protection FDK 2 D 5 24
1 piece of
Low-voltage protection,
type FDK 2 12 V on insulated rail con-
nected with M-- of the power supply
for the modules.
DEHN + SÖHNE
GmbH + Co. KG
Elektrotechnische Fabrik
Hans-Dehn-Str. 1
D-92318 Neumarkt
Assembling and Installing Systems
900 600*
5SD7 030
900 600*
5SD7 030
900 600*
5SD7 030
900 131*
900 600*
5SD7 030
900 600*
5SD7 030
900 600*
5SD7 030
900 131*
918 402*
919 506* and
919 570*
919 995*
919 993*
901 101*
901 100*
919 991*
919 995*
Order No.
A-27
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