Quantcast Figure 5-12. Single-Point Signal Ground (For Lower Frequencies)

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located throughout a facility. This type of ground network requires an extremely large number of conductors
and is not generally economically feasible. In lieu of the ideal, various degrees of approximation to single-point
grounding are employed.
Figure 5-12. Single-Point Signal Ground (For Lower Frequencies)
The configuration illustrated by Figure 5-13 closely approximates an ideal single-point ground. It uses
individual ground buses extending from an earth electrode subsystem to each separate electronic system. In
each system, the various electronic subsystems are individually connected at only one point to this ground bus.
Another frequently used approximation to the ideal is illustrated in Figure 5-14. Here the ground bus network
assumes the form of a tree. Within each system, each subsystem is single-point grounded. Each of the system
ground points is then connected to a tree ground bus with a single insulated conductor (usually yellow).


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