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The metallic vapor density in vacuum arc in a vacuum interrupter is crucial for deeper understanding of the anodic activities and dielectric recovery process. In this work, the objective is to measure the Cr metallic vapor density and its axial distribution along the gap in the vacuum arc between chromium contacts. The method of the optical absorption spectroscopy (OAS) using a broadband light source...
Axial magnetic field (AMF) contact structures are often adopted for promoting interruption ability in the vacuum interrupters. After current-zero, there still exists residual magnetic field in the contact gap result from the eddy current. As a consequence, the plasma dissipation process which recovers the dielectric strength of the vacuum interrupter, was influenced immediately in the post-arc phase...
A sheath recovery process dominants the initial stage of a dielectric recovery process after interrupting a vacuum arc current. The objective of this paper is to model a post-arc sheath recovery process by using PIC-MCC method. Second electrons, external circuit, and fundamental collisions between particles were taken into considerate in the model. The result shows that the amplitude of post-arc current...
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