<abstract xmlns="http://www.w3.org/1999/xhtml"><p>Although various measurement techniques have been applied to both qualitative and quantitative evaluation for the electromagnetic shielding performance of braided-shield power cables, the existing measurements cannot directly assess the low-frequency shielding performance (typically below 100 kHz) due to factors such as ground-loop effects and dynamic range problem in measurement. To solve these, an improved shield reduction factor method, based on gain (T/R) rather than scattering parameters, is proposed to evaluate the shielding performance of braided-shield power cables from 25 Hz to 1 MHz. In this work, we highlight the implementation of measurement setup to avoid the effects of ground-loop and stray electromagnetic field. Meanwhile, the test cell is simplified according to the definition of the shield reduction factor in order to obtain the gain (T/R) parameters, which can be used to calculate transfer impedance as well. From the measurements we present more intuitive evaluation of shielding behavior of braided-shield power cables at low frequency regimes, and showcase a detailed comparative discussion between transfer impedance and shield reduction factor. The proposed shield reduction factor method is expected to be a useful way for the evaluation of the low frequency shielding performance of braided-shield cables.</p></abstract>

Although various measurement techniques have been applied to both qualitative and quantitative evaluation for the electromagnetic shielding performance of braided-shield power cables, the existing measurements cannot directly assess the low-frequency shielding performance (typically below 100 kHz) due to factors such as ground-loop effects and dynamic range problem in measurement. To solve these, an improved shield reduction factor method, based on gain (T/R) rather than scattering parameters, is proposed to evaluate the shielding performance of braided-shield power cables from 25 Hz to 1 MHz. In this work, we highlight the implementation of measurement setup to avoid the effects of ground-loop and stray electromagnetic field. Meanwhile, the test cell is simplified according to the definition of the shield reduction factor in order to obtain the gain (T/R) parameters, which can be used to calculate transfer impedance as well. From the measurements we present more intuitive evaluation of shielding behavior of braided-shield power cables at low frequency regimes, and showcase a detailed comparative discussion between transfer impedance and shield reduction factor. The proposed shield reduction factor method is expected to be a useful way for the evaluation of the low frequency shielding performance of braided-shield cables.

Electromagnetic Shielding Performance Measurement for Braided-Shield Power Cables at Low Frequency Regimes

Measurement Science Review

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Although various measurement techniques have been applied to both qualitative and quantitative evaluation for the electromagnetic shielding performance of...

Electromagnetic Shielding Performance Measurement for Braided-Shield Power Cables at Low Frequency Regimes

Published Online: Oct 29, 2020

Page range: 224 - 229

Received: Jul 06, 2020

Accepted: Oct 12, 2020

DOI: https://doi.org/10.2478/msr-2020-0029

Keywords
Braided-shield power cable, electromagnetic shielding performance, shield reduction factor, measurement technique

© 2020 Zhongyuan Zhou et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Electromagnetic Shielding Performance Measurement for Braided-Shield Power Cables at Low Frequency Regimes

Published Online: Oct 29, 2020

Page range: 224 - 229

Received: Jul 06, 2020

Accepted: Oct 12, 2020

DOI: https://doi.org/10.2478/msr-2020-0029

KeywordsBraided-shield power cable, electromagnetic shielding performance, shield reduction factor, measurement technique

© 2020 Zhongyuan Zhou et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
Braided-shield power cable, electromagnetic shielding performance, shield reduction factor, measurement technique