Abstract
The research work considers vacuum arc-extinguishing chambers with axial and radial magnetic fields. The object of research is vacuum arc suppression chambers with an axial magnetic field of 10 kV, 20 kA and with a radial magnetic field of 10 kV, 40 kA as well as ways to increase the breaking capacity by changing the configuration for each type of chambers. The research work uses the method of mathematical modeling of physical processes in the Comsol Multiphysics software package, graphical modeling of chambers is performed in Compass v18. 0. The results showed that changing the geometric parameters of vacuum arc-extinguishing chambers can increase the breaking capacity. Based on the results obtained, it can be concluded that to increase the maximum cut-off current, it is sufficient to change the geometry of the vacuum arc-extinguishing chamber. In combination with other ways to increase the breaking capacity, it is possible to expand the area of application of vacuum interrupters - the most reliable, safe and environmentally friendly switching devices.
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