Title :
Protection of cables by grounding structures
Author :
van Deursen, A.P.J. ; van Helvoort, M.J.A.M. ; van Horck, F.B.M. ; van der Merwe, J. ; Der Laan, P.c.t. Van
Author_Institution :
Eindhoven Univ. of Technol., Netherlands
Abstract :
Conduits of various shapes offer good electromagnetic protection to cables placed inside. As measure of protection, the transfer impedance has been studied; in the frequency range of interest the current adjusts between the low and high frequency distribution in the conduit. Quasistatic two-dimensional calculations are based on the method of moments and on conformal transformations. Practical U, H, L and T shapes are studied mostly. Engineering equations directly give the dominant parts of the transfer impedance for various cable positions inside non-magnetic conduits. Measurements on U conduits confirmed the models
Keywords :
cable shielding; cable testing; earthing; electric conduits; electric impedance measurement; method of moments; transforms; H shape; L shape; T shape; U shape; cable positions; cables protection; conduits; conformal transformations; current; electromagnetic protection; engineering equations; frequency range; grounding structures; high frequency distribution; low frequency distribution; measurements; method of moments; nonmagnetic conduits; parallel-earthing conductor; quasistatic two-dimensional calculations; transfer impedance; Cables; Current measurement; Electromagnetic measurements; Equations; Frequency measurement; Grounding; Impedance measurement; Moment methods; Protection; Shape;
Conference_Titel :
Electromagnetic Compatibility, 2000. IEEE International Symposium on
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-5677-2
DOI :
10.1109/ISEMC.2000.874738
