Surge Voltage Protection Components For Lightning Protection Zones 2 <-> 3 - Siemens CPU 313C Hardware And Installation Manual

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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 S7-300 for CE compliance.
Table 12-10 Surge voltage protection components for lightning protection zones 2 <-> 3
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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, RS485
•
RS232 (V.24)
4 Inputs of digital modules
•
24V DC
•
120 VAC
•
230 VAC
5 Outputs of digital
modules 24 V
6 Outputs of analog
modules up to 12 V +/-
* You can order these components directly from:
DEHN + SÖHNE
GmbH + Co. KG
Elektrotechnische Fabrik
Hans-Dehn-Str. 1
D-92318 Neumarkt
12-24
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3 x DEHNguard 275 surge
arresters
4 x DEHNguard 275 surge
arresters
3 x DEHNbloc/275 surge arrester,
phase L1/L2/L3 to N
1 x DEHNgap C, N-PE surge
arrester, N to PE
2 x DEHNguard 275 surge
arresters
1 x DEHNguard 275 surge
arresters
1 x DEHNguard 275
surge arrester, phase L to N
1 x DEHNgap C, N-PE surge
arrester, N to PE
1 x Blitzductor VT, type AD 24 V -
•
Blitzductor CT surge
arrester, type MD/HF
•
1 x per conductor pair
low-voltage surge protection
FDK 2 12 V
1 x Low voltage protection
, type FDK 2 60 V, on insulated
rail
2 x Surge arrester
•
DEHNrail 120 FML
•
DEHNrail 230 FML
1 x Low-voltage protection
FDK 2 D 5 24
1 x Low-voltage protection
, type FDK 2 12 V, on insulated
rail connected with M- of the
power supply for the modules.
S7-300 Automation System, Hardware and Installation: CPU 31xC and CPU 31x
2UGHU 1R
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*
A5E00105492-03