1. System Installation Requirements
1-23
TI 33Q01J10-01E
Grounding Grouped Cabinets
When Ground Bus Inlet is Provided in Control Room
When installing multiple cabinets/console type HIS in the same room, the ground cables of those
cabinets/console type HIS may be connected to one ground bus inlet as illustrated below.
A ground cable of at least 5.5 mm
2
should be used to connect each cabinet and the inlet.
G
Cabinet
/Console Type
HIS
G
Cabinet
/Console Type
HIS
G
Cabinet
/Console Type
HIS
G
Cabinet
/Console Type
HIS
In same control room
100 ohms or less
Ground bus
Ground bus inlet
F010403.ai
Figure Grounding Through Ground Bus Inlet
Providing Ground Bus in Cabinet/Console Type HIS
When installing multiple cabinets in the same room but no ground bus inlet is provided in the
room, the ground bus may be connected directly to the ground bars inside the individual cabinets
as illustrated below. A ground cable of at least 5.5 mm
2
should be used to connect the cabinet/
console type HIS with the ground bus to others.
G
Cabinet
/Console Type
HIS
G
Cabinet
/Console Type
HIS
G
Cabinet
/Console Type
HIS
G
Cabinet
/Console Type
HIS
In same control room
100 ohms or less
Ground bus
F010404.ai
Figure Grounding Via Cabinet/Console Type HIS with Ground Bus
Nov. 20, 2003-00
