Experimental Temperature Measurements in Miniature Circuit Breaker
DOI:
https://doi.org/10.14311/ppt.2017.3.265Keywords:
switching arc, miniature circuit breaker, atomic emission spectroscopy, temperature measurement.Abstract
Low voltage switching apparatuses efficiency depends on the speed of movement of the switching arc from the contacts to the quenching chamber. The paper is focused on investigation of this movement of an arc. Measurement of radiation spectra of the electric arc burning inside miniature circuit breaker and moving to quenching chamber are presented. Measured radiation spectra contain suitable atomic spectra lines for calculation purposes. The problems connected with the measurements are discussed. The main part of the paper deals with a calculation of temperature of the investigated plasma of the arc. Atomic lines database of National Institute of Standards and Technology was used as a spectral data source for the calculations.References
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Y. Wu, M. Rong, Z. Sun, X. Wang, F. Yang, and X. Li. Numerical analysis of arc plasma behaviour during contact opening process in low-voltage switching device. Journal of Physics D: Applied Physics, 40(3):795–802, 2007. doi:10.1088/0022-3727/40/3/016.
M. Rong, F. Yang, Y. Wu, A. B. Murphy, W. Wang, and J. Guo. Simulation of arc characteristics in miniature circuit breaker. IEEE Transactions on Plasma Science, 38(9):2306–2311, 2010. doi:10.1109/TPS.2010.2050703.
National Institute of Standards and Technology. Atomic spectra database lines form. URL: https://physics.nist.gov/PhysRefData/ASD/lines_form.html.
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