
Guidelines for Installing Networked Automation Systems in Buildings
7-12
SIMATIC NET Twisted-Pair and Fiber-Optic Networks
C79000-G8976-C125-02
PE
N
L
PENL3L2L1
CBN
OSM ITP62
PE
N
L
CBN
OSM ITP62
FOC
Floor 1
TN-S
Floor 2
TN-S
neutral cable current
TN-C
Figure 7-1 Fiber-Optic Cables Avoid Shield Currents in the TN-C-S network
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