Electrostatic Analysis of Short Accident in Cable Trays for Intelligent Pressure Transmitters

Abstract

We apply the mode-matching method to the electrostatic analysis of shorted enclosed-cable trays that aregenerally used in industrial facilities such as nuclear power plant. In mode-matching formulation on potentialdistribution, we utilize Laplace ’s equation and superposition principle. After obtaining the modal coefl‘icients fromDirichlet and Neumann boundary conditions, we then derive distributions ofpotential and electric field, capacitancematrix, effecive didlectric constant, and characteristic impedance to evaluate the electromagnetic influence caused byshort accident in the enclosed-cable tray.