Spectroscopic Study of Arc Temperature Profiles of a Switching-off Process in a Model Chamber

Authors

  • R. Methling
  • St. Franke
  • D. Uhrlandt
  • S. Gorchakov
  • F. Reichert
  • A. Petchanka

Keywords:

circuit-breaker, arc temperature, spectroscopy

Abstract

A model chamber was applied to emulate a switching-off process which is very similar to those in real high-voltage circuit-breakers. The arc between moved W-Cu electrodes through a PTFE nozzle in SF6 was considered. Transparent windows in the chamber wall and a slit in the nozzle enabled an optical in-vestigation of the arc cross section several milliseconds before current zero. The side-on radiance of fluo-rine atom lines has been measured. Considering rotational symmetry of the arc the corresponding radial emission coefficients have been determined. Radial temperature profiles have been obtained with uncer-tainties below 10% considering change of window transmission and optical depth of the line radiation. The experimentally determined temperature profiles are used to validate a CFD simulation of the switch-ing-off process in the model chamber.

References

Petchanka A, Reichert F, Methling R, Franke St, abstract is submitted to this conference, (2015)

Kozakov R, Kettlitz K, Weltmann K-D, Stef-fens A, Franck C M, J. Phys. D: Appl. Phys. 40 (2007) 2499-2506

Tanaka Y, Yokomizu Y, Ishikawa M, Matru-mura T, Kito Y, J. Phys. D: Appl. Phys. 30 (1997) 407-416

Eichhoff D, Kurz A, Kozakov R, Gött G, Uhr-landt D, Schnettler A, J. Phys. D: Appl. Phys. 45 (2012) 305204

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Published

2015-04-06

Issue

Vol. 2 No. 2 (2015)

Section

Articles

License

Copyright (c) 2015 R. Methling, St. Franke, D. Uhrlandt, S. Gorchakov, F. Reichert, A. Petchanka

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