Comparative analysis of shielding characteristics of signal-blocking cables for railway transport

• Main Authors: V. A. Andreev, A. K. Bulkhin, B. V. Popov, V. B. Popov
• Format: Article
• Language: English
• Published: CRI «Electronics» 2020-09-01
• Series: Радиопромышленность
• Subjects: signal-blocking cable; electrified railways; experimental studies; ideal protective action coefficient; shielding coefficient; shielding attenuation; transient attenuation; metal cable protective covers
• Online Access: https://www.radioprom.org/jour/article/view/724
• ISSN: 2413-9599; 2541-870X

The objective of this article is to compare the shielding characteristics of the most applicable signal-blocking cables designs. In this paper, based on calculations and experimental studies, a comparative analysis of the shielding characteristics of cables with a solid pressed screen and a screen consisting of an aluminum-polyethylene tape and a layer of aluminum wires is performed. Special attention is paid to the characteristics of the influence of external electric fields. Measurements of the ideal protective action coefficient of signal-blocking cable samples were made, and an estimated calculation of shielding attenuation was performed. For a comparative assessment of the influence of external transverse high-frequency fields, measurements of transient attenuation at the near end were made on samples of signalblocking cables under study. It is shown that the shielding characteristics of cables with a solid aluminum screen are better than those of cables with a screen made of aluminum-polyethylene tape and aluminum wire layer. Recommendations are given – on electrified railways, preference should be given to signal-blocking cables with a solid aluminum screen.