doi: 10.52899/24141437_2026_02_219
UDK: 621.372.2

Electrical cable wave resistances

Воршевский А. А., Воршевский П. А., Киав М. ., Хейн Х. .
Article language:
Citation Link: Worshevsky AA, Vorshevskii PA, Kyaw Myat Thu, Hein Htet Aung. Electrical Cable Wave Resistances. Transactions of the Saint Petersburg State Marine Technical University. 2026;5(2):219–226. DOI: 10.52899/24141437_2026_02_219 EDN: LGCTXR

Annotation

BACKGROUND: The rules of the Russian Maritime Register of Shipping require that ship equipment be capable of withstanding nanosecond pulse interference in power supply circuits with an amplitude of up to 2 kV. To predict the propagation and impact of such interference through cables, it is necessary to know the wave resistances of electrical cables, which are currently not regulated. AIM: This work aimed to determine and justify the formulas for calculating the wave parameters of electrical cables, and to calculate and measure the wave resistance values of samples of marine electrical cables. METHODS: Cables are considered as lines with distributed parameters. A method for measuring wave resistances based on reflectogram analysis of a voltage pulse with a nanosecond rise time was used. RESULTS: Formulas describing the wave parameters of cables for the propagation channel of differential-mode and common-mode voltages are presented and experimentally verified. Theoretical dependences of the parameters on the installation height above the metal hull for cables of different diameters, examples comparing calculated and measured results, and measured surge impedance values for seven marine cables laid at different heights above a metal sheet are provided. CONCLUSION: The theoretical graphs of the dependence of wave parameters on conductor diameter and installation geometry, along with the measured surge impedance values for a number of marine cables, are recommended for use in predicting the impact of pulse interference on ship equipment. Keywords: pulse interference, differential-mode and common-mode interference, cable, propagation, wave resistance, measurement, calculation

Bibliography

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