Verification of the magnetic method in testing of the modified composite core of overhead conductors

  • Mariusz Szot Central Mining Institute Plac Gwarków 1, 40-166 Katowice, Poland
  • Piotr Szade Central Mining Institute Plac Gwarków 1, 40-166 Katowice, Poland


ACCC/TW conductors deliver excellent electricity transmission results, boosting overall power system efficiency and capacity. Detracting from their many advantages is the propensity of their composite cores to suffer cracking under excessive bending. This article presents a concept for modifying construction and a testing method to determine the technical state of the conductor core after installation in its place of operation. The technique uses an existing method for magnetic testing of steel cables. Tests were conducted on a series of conductor models with cores containing epoxy resin with an addition of a ferromagnetic FeSi 15 powder. The measurements showed the tests were able to detect small crosswise gaps and cracking simulated in the core. The accuracy of the method is determined by the concentration of a magnetic component in the core.

Author Biography

Mariusz Szot, Central Mining Institute Plac Gwarków 1, 40-166 Katowice, Poland
Head of the Laboratory of Ropes and Shaft Equipment


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How to Cite
SZOT, Mariusz; SZADE, Piotr. Verification of the magnetic method in testing of the modified composite core of overhead conductors. Journal of Power Technologies, [S.l.], v. 100, n. 2, p. 138-143, may 2020. ISSN 2083-4195. Available at: <>. Date accessed: 23 july 2024.
Materials Science


composite core conductor, magnetic testing, power transmission

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