Transfer impedance measurement of a 19"-subrack

Author

Bernauer, J. ; Schwab, A.J.

Author_Institution

Inst. of Electr. Energy Syst. & High-Voltage Technol., Karlsruhe Univ., Germany

fYear

1996

fDate

19-23 Aug 1996

Firstpage

360

Lastpage

365

Abstract

The transfer impedance of a 19"-aluminum subrack has been measured by injecting a current into the shield surface and measuring the voltage across the inner surface between the injection points. The measurements were performed in the frequency range from dc up to 30 MHz. With two different set-ups, the influence of the current return path was examined. The surface transfer impedance depends strongly on the mounting conditions of the basic unit (side plates and horizontal rails) and the covers. The interference currents were symmetrically injected into opposite shield surfaces in x, y and z-direction

Keywords

electric impedance measurement; electromagnetic interference; electromagnetic shielding; 0 Hz to 30 MHz; 19"-aluminum subrack; current return path; horizontal rails; interference currents; mounting conditions; opposite shield surfaces; shield surface; shielding enclosures; side plates; surface transfer impedance; transfer impedance measurement; voltage measurement; Coaxial components; Conducting materials; Eddy currents; Fasteners; Impedance measurement; Interference; Rails; Strips; Surface impedance; Voltage measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetic Compatibility, 1996. Symposium Record. IEEE 1996 International Symposium on

Conference_Location

Santa Clara, CA

Print_ISBN

0-7803-3207-5

Type

conf

DOI

10.1109/ISEMC.1996.561258

Filename

561258