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Cable accessory always fits cable with a shrink range in order to ensure a certain interface pressure in the actual use, so cable accessory keeps in the expansive state after installation. But the expanded accessory will lead to not only a thinner insulation thickness and a shorter length but also a possible problem in the accessory, as the angle of stress cone and the shape at end of high voltage...
A simple and tunable waveguide-to-microstrip transition is presented, the transition structure is a dielectric substrate overlaid with metal patches and inserted into the wide wall of the waveguide. A flexible numerical analysis method based on the weak form of the Helmholtz equations is used to optimize and analyze the transition.
This paper uses a method to compute the kernel needed for dispersive scatterer computations numerically. FDDM works by substituting a Z-domain finite difference approximation for the transform variable in the Laplace transformed kernel. The inverse Z-transform of the result is the FDDM kernel. The method described here computes the inverse z-transform directly by integrating in the complex z plane...
This paper presents the research of the air arc simulation for low voltage switching devices. Based on magneto-hydrodynamic (MHD) equations, we developed a time-dependent three-dimensional (3-D) model for the switching arc considering Lorentz forces, Ohmic heating and radiation transport. The arc elongation, arc commutation, arc motion and arc cutting process are all included in the analysis.
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