YOKOGAWA CENTUM CS, Technical Information

Page: 32 / 253

1. System Installation Requirements
1-20
TI 33J01J10-01EN
n
Grounding Circuit
A cabinet must be grounded according to the grounding network topology of the building or plant
for installation.
In order to connect a cabinet with a protective grounding system, the grounding topology shown
in the figures “Grounding connected to single grounding bus inlet” or “Grounding connected to
each grounding bus inlet” can be used.
When providing lightning arresters on power and signal lines, those arresters need to be
grounded to the same bus. For details, see Section 1.5, “Noise Countermeasures.”
Cabinet Cabinet Cabinet Cabinet
Protective grounding system
Graunding bus inlet
F010402.ai
G G G G
In same
control room
G: Grounding Bar
Figure Grounding connected to a single grounding bus inlet
Cabinet Cabinet Cabinet Cabinet
Protective grounding
system
Protective grounding
system
Protective grounding
system
G: Grounding Bar Protective grounding system
Graunding bus inlet
F010403.ai
G G G G
In same
control room
Protective grounding
system
Figure Grounding connected to each grounding bus inlet
Dec. 28, 2015-00