Inductive Collapsed Loops

DOE-HDBK-1092-98

Power Cable

Tray

Ground

Pulse

Conductor

Power

Supply

Load

Multiconductor

Tray

Ground

Conductor

I/O

Controller

INDUCTIVE COLLAPSED LOOPS

Figure 10-7. Intentional returns have been installed for both the pulse power supply and the controller right

in the trays for the cables. Both loops have been reduced to small cross sections, reducing inductive coupling.

Any electromagnetic (far field) radiation being generated by the pulse power supply and its cabling will also

be reduced.

10.9.2.1.4 OPERATION AND MAINTENANCE

Before starting each operation (experiment, test, etc.) the exposed portions of the grounding system

should be visually checked for any damage and to determine that all necessary connections have been

made. If more than one operation is conducted every day, then visual checks should be performed

only at the beginning of each shift, if the grounding system will be needed during that shift. The

adequacy of the grounding system should be verified annually. It is recommended that the grounding

impedance within the equipment be maintained at 0.25 ohms or less. (See IEEE 1100).

10.9.2.2

MATERIALS USED IN AN UNCONVENTIONAL MANNER

The practice of using materials or components for purposes other than originally designed needs

special safety considerations in use, identification, personnel protection, and equipment protection.

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