Study of Arc Parameters of AC Relays Operating under Distorted Supply Voltage Conditions

Dariusz Smugala and Michal Bonk
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Dariusz Smugala: Institute of Electromechanical Energy Conversion, Cracow University of Technology, Warszawska 24 Str., 31-155 Cracow, Poland
Michal Bonk: Department of Electrical and Power Engineering, AGH University of Science and Technology, Mickiewicza 30 Str., 31-126 Cracow, Poland

Energies, 2020, vol. 13, issue 18, 1-13

Abstract: The paper presents a procedure for measuring and analyzing the switching arc parameters occurring in air-insulated low voltage (LV) relays operating in distorted supply voltage conditions. The main purpose of the research was the analysis of the switching arc duration and its energy affecting the current breaking capacity of the selected LV current interrupters (CI). The performed study and simple statistical analysis enabled the determination of the main factors and their impact level on parameters of the switching arc that comes about during switching-off operation. Experimental tests executed for various shapes of the supply voltage but similar RMS (Root Mean Square) and THD (Total Harmonic Distortion) values and for various breaking moments of the load current allowed recognition of the decisive factors for estimating the tested relay’s switching-off capacity. Tests stand combined with dedicated software developed in the frame of the research, permiting fast calculation of the arc parameters based on a large number of recorded diagrams.

Keywords: arc energy; arcing time; current interrupters; energy quality; harmonics (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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