In this study, we calculated thermal plasmas happened in two types of switchgears for understanding the complex physics and the probability of thermal breakdown. The first part concerns modeling of switching arc itself with an auto-expansion chamber a...
In this study, we calculated thermal plasmas happened in two types of switchgears for understanding the complex physics and the probability of thermal breakdown. The first part concerns modeling of switching arc itself with an auto-expansion chamber as an example. The second part focuses on simulation of the PTFE nozzle ablation effect by high-temperature switching arc with an puffer-assisted self-blast switchgear. The present method is expected to be useful for setting guideline of switchgear design and predicting the interruption capacity of arcing chambers.