Siemens SINAMICS G120 Hardware Installation Manual page 24

Installing/Mounting
4.2 Electrical Installation
TN-C-S Power System
L1
L2
L3
PEN
Figure 4-3
In a TN-C-S power system, the neutral and protective functions are combined in a single part
of the system.
TN-C Power System
L1
L2
L3
PEN
Figure 4-4
In a TN-C power system, the neutral and protective functions are combined in a single
conductor throughout the system.
4-6
L1 L2 L3
Exposed Conductive Parts
TN-C-S power system
L1 L2 L3
Exposed Conductive Parts
TN-C power system
N
PE
Hardware Installation Manual, 2006-04-04, A5E00807525B AA
Power Modules PM240