Siemens Simatic S7-300, Руководство по аппаратному обеспечению и установке, Страница: 212 / 242

Appendix
S7-300 Programmable Controller Hardware and Installation
11-24
A5E00105492-01
Table 11-9 Low-voltage protection for lightning protection zones 1 <-> 2
Ser.
No.
Cables for ... ... equip transition point
1 <-> 2 with:
Order No.
3-phase TN-C system 3 pieces
of DEHNguard 275 surge
arresters 900 600*
5SD7 030
3-phase TN-S system 4 pieces
of DEHNguard 275 surge
arresters 900 600*
5SD7 030
3 pieces
of DEHNbloc/275 surge arrester,
phase L1/L2/L3 to N 900 600*
5SD7 030 3-phase TT system
1 piece
of DEHNgap C N-PE surge
arrester, N to PE 900 131*
AC TN-S system 2 pieces
of DEHNguard 275 surge
arresters 900 600*
5SD7 030
AC TN-C system 1 piece
of DEHNguard 275 surge
arresters 900 600*
5SD7 030
1 piece
of DEHNguard 275
surge arrester, phase L to N 900 600*
5SD7 030
1
AC TT system
1 piece
of DEHNgap C, N-PE surge
arrester, N to PE 900 131*
2 24 VDC Power Supply 1 piece
of Blitzductor VT, type AD 24 V - 918 402*
Bus cable
•
MPI, RS485
•
Blitzductor CT surge
arrester, type MD/HF
919 506* and
919 570*
3
•
RS232 (V.24) 1 piece
of
•
per conductor pair
surge arrester
Blitzductor CT Typ ME 15 V 919 506* and
919 522*
4 Inputs of digital modules
DC 24 V 1 piece
of Low-voltage surge arrester,
type FDK 2 60 V 919 993*
5 Outputs of digital modules
24 V 1 piece
of Low-voltage surge arrester 919 991*
Inputs/outputs of digital
modules 2 pieces
of Surge arrester
•
120 VAC
•
DEHNguard 150 900 603*
6
•
230 VAC
•
DEHNguard 275 900 600*
7 Inputs of analog modules up
to 12 V +/- 1 piece
of
Blitzductor CT surge arrester,
type MD 12 V
919 506* and
919 541*
* You can order these components directly from:
DEHN + SÖHNE
GmbH + Co. KG
Elektrotechnische Fabrik
Hans-Dehn-Str. 1
D-92318 Neumarkt