Abstract :
The subject of the investigation is a short arc burning in air between electrodes made of refractory materials. Based on measurements of the electrical conductivity of near-electrode regions, as well as on calculations, it is stated, that thermal reignition takes place in a thermal layer near the new anode. In the paper, a model of short arc thermal reignition is presented and the results of calculations are compared with measurements. These results shed light on postarc conditions in low voltage circuit breakers.
Keywords :
"Electrodes","Plasma temperature","Anodes","Cathodes","Thermal conductivity","Ionization","Conducting materials","Low voltage","Plasma materials processing","Conductivity measurement"
