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The morphology analysis of arc plasma inside a low‐voltage circuit breaker is a practical approach to investigate its current interruption performance. It is a typical ill‐posed problem to determine the arc current distribution from the induced magnetic field of arc plasma. The regularization method has been proven effective in solving inverse magnetic problems. However, the arrangement of current‐carrying...
This paper presents a work that was aimed to study the arc motion characteristics of low-voltage circuit breaker based on the magnetic testing technology by using hall sensors to obtain the data about the magnetic field distribution. Combined with the images of arc movement obtained by the CCD camera, the relation between magnetic field distribution and the arc motion during the interruption process...
The measurement and analysis of the spatial morphology and dynamic characteristics of the electric arc plasma inside low voltage circuit breaker is an effective way to improve its breaking performance and modern testing techniques have been applied to the experimental study on switching arc plasma in recent years. However, these techniques usually need to destroy the extinguishing chamber wall and...
As one of the most important electrical components in distribution systems, the Miniature circuit breaker(MCB) has been widely used to protect the electrical equipment. In particular, the low-voltage dc circuit breaker intrigues more and more researchers recently. In this type of circuit breaker, an electric arc is formed in the interrupting process which is a transient arc plasma in a complex chamber...
Background The present study was aimed to evaluate whether IgG, IgM and IgA antibodies levels detected against a novel Mycobacterium tuberculosis polyprotein 38 F-64 F (with 38 F being the abbreviation for 38kD-ESAT6-CFP10 and 64 F for Mtb8.4-MPT64-TB16.3-Mtb8) are suitable for diagnosing active tuberculosis, and for monitoring the efficacy of chemotherapy on TB patients. Methods In this study,...
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