Experimental Investigations on Electrical Plasma Conductivity in a Model Spark Gap for Surge Currents

Authors

  • T. Runge Technische Universität Braunschweig, Institute for High Voltage Technology and Electrical Power Systems, 38106 Braunschweig
  • T. H. Kopp Technische Universität Braunschweig, Institute for High Voltage Technology and Electrical Power Systems, 38106 Braunschweig
  • M. Kurrat Technische Universität Braunschweig, Institute for High Voltage Technology and Electrical Power Systems, 38106 Braunschweig

DOI:

https://doi.org/10.14311/ppt.2017.1.24

Keywords:

arc, electrical conductivity, plasma, spark gap, surge current, surge protective device

Abstract

In this experimental investigation the electrical conductivity of plasma is measured during surge current using potential probes. The measurements were carried out in a narrow gap arrangement based on spark gap technology. In order to investigate the electrical conductivity during surge this model is tested using 8/20 µs surge currents according to the IEC 62475. The measured behaviour of the electrical conductivity during surge and the uncertainty of these measurements are discussed

References

T. Runge, T. H. Kopp, and M. Kurrat. Experimental investigation on plasma pressure in an narrow gap for short time currents. In Int. Conf. on Electrica Contacts, Edinburgh, Great Britain, 2016.

B. Schottel and M. Kurrat. Experimental investigation of short-time arc-wall interaction. In Int. Conf. on Gas Disch. and Their Appl., Bejing, China, 2012.

M. S. Benilov and A. Marotta. A model of the cathode region of atmospheric pressure arcs. J. Phys. D: Appl. Phys., 28(9):1869–1882, 1995. doi:10.1088/0022-3727/28/9/015.

H. M. Mott-Smith and I. Langmuir. The theory of collectors in gaseous discharges. Phys. Rev., 28(4):727–763, 1926. doi:10.1103/PhysRev.28.727.

G. R. Jones. High pressure arcs in industrial devices. Cambridge University Press, 1988.

E. Z. Ibrahim. The ablation dominated polymethylmethacrylat arc. J. Phys. D: Appl. Phys., 13(11):2045–2065, 1980. doi:10.1088/0022-3727/13/11/015.

V. Bergmann. Untersuchungen zur anwendbarkeit elektrischer sondenmessungen im hochstromlichtbogen. PhD Thesis, 1987.

G. Hertz and R. Rompe. Einfürhung in die Plasmaphysik und ihre technischen Anwendungen. Akademie Verlag, 1986.

B. Schottel, T. H. Kopp, T. Runge, and M. Kurrat. Experimental investigations of short-time plasma propagation recorded by high speed camera. In Int. Conf. on Gas Disch. and their Appl., Orleans, France, 2014.

T. H. Kopp, T. Runge, and M. Kurrat. Investigation of arc interruption behavior of a model spark gap after surge current. In Int. Conf. on Electric Contacts, Edinburgh, Great Britain, 2016.

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Published

2017-10-15

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