'Czech Technical University in Prague - Central Library'
Abstract
In this work, an atmospheric thermal plasma arc generated from a laboratory scale high power arc switching device was investigated. In the presented study the typical voltage and current profiles from the arc switching device were measured by a high voltage probe and a Rogowski coil. It was shown that the volt-ampere characteristic of the arc plasma is directly related to the distance between electrodes. This switching device has a pulse width range of approximately 120 ns. Furthermore, the optical emis-sion spectroscopy techniques were used to measurement of the arc temperature and to identify the plasma active species. The calculated arc temperature is about 14000 K