Analysis of Shielding Effectiveness of a Faraday Cage for High Voltage Laboratory

Analysis of protective structure’s effectiveness against Electromagnetic Interference (EMI) in a High Voltage Laboratories is very significant in today’s advancement in Science. This paper describes the shielding effectiveness (SE) of a Faraday cage with dimensions 6.2m X 5m X 8.2m for an environment comprising a High Voltage laboratory. However, simulation models are limited; the cage is scaled down by a factor of 50 and is simulated in EMPro© 3D EM simulation software. Finite Difference Time Domain (FDTD), computational technique is evolved as 3D EM field solver since it provides best memory efficient results for the considered structure. The obtained simulation results are compared with practical results and outcomes are recorded. The effects of cage’s thickness, and material on its SE are also determined. Average SE of 18 dB is obtained for our structure and the ways to further improve the SE are suggested.