Abraham Rubinstein

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Säntis Lightning Research Facility Instrumentation

Mohammad Azadifar, Amirhossein Mostajabi, Mario Paolone, Davide Pavanello, Carlos Alberto Romero Romero, Marcos Rubinstein, Abraham Rubinstein, David Smith, Antonio Sunjerga

The Säntis Tower was instrumented in May 2010 to measure currents of lightning discharges striking the tower. Since then the system has been recurrently updated and expanded. Currently, data associated with lightning strikes to the tower are collected at five different sites. The facility is equipped with a current measurement system, three electric field antennas, an electrostatic field mill, two x-rays sensors, a high-speed camera and four full HD cameras. This paper presents the latest measurement configuration at the facility.

2021

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The cascaded transmission line theory of Paul and McKnight is used in this paper to predict near-end crosstalk (NEXT) and far-end crosstalk (FEXT) in a bundle of twisted wire pairs. The approach is validated using the CST Cable Studio commercial software and experimental data. NEXT and FEXT along twisted pair bundles are then evaluated using a pure deterministic approach for the electromagnetic coupling while taking into account the random distribution of victim and aggressor pairs in the bundle. The results obtained using the presented approach are compared with available simplified empirical expressions (ANSI/FSAN). It is shown that the simplified expressions are able to predict the overall trend of the power sum loss. However, they do not always provide the worst case values. The presented theory can find important applications in the design of data transmission systems for which accurate crosstalk modeling is a vital task. It can be used for example as a replacement for the experiments in obtaining the parameters of simplified models for NEXT and FEXT.

Ieee-Inst Electrical Electronics Engineers Inc2013

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A system for the measurements of lightning currents at the Säntis Tower

Mario Paolone, Farhad Rachidi-Haeri, Marcos Rubinstein, Abraham Rubinstein, Pierre Zweiacker

The paper presents the characteristics of a system suitably developed to measure lightning current waveforms on the Santis Tower in Switzerland. The paper first describes the configuration of the system then presents the characteristics of the measurement equipment, in terms of bandwidth and accuracy, inferred by means of experimental tests. Finally, we present and discuss examples of waveforms measured using the system. (C) 2011 Elsevier B.V. All rights reserved.

Elsevier2012

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