Shielding of Electric Reactor Magnetic Field

  • J. Morozionkov Kaunas University of Technology
  • J. A. Virbalis Kaunas University of Technology


Concerning protection of the person the area of magnetic fields of industrial frequency (50 Hz) is the most large–scale and constantly operating harmful factor. In considered area, the shields from usual conducting materials are not effective. It is recommended the use of multilayer screens produced of amorphous magnetic soft alloys. The expressions are presented for the shielding efficiency calculation. The air current–limiting reactor is the source of the large magnetic field. The modeling by finite element method was performed to compare the magnetic field in the air reactor surroundings with magnetic screen and without it. The obtained results show that magnetic screen of amorphous magnetic soft materials allows to diminish the magnetic field in reactor surroundings more than 10 times. Ill. 7, bibl. 4, tabl. 1 (in English; abstracts in English, Russian and Lithuanian).

How to Cite
Morozionkov, J., & Virbalis, J. A. (2009). Shielding of Electric Reactor Magnetic Field. Elektronika Ir Elektrotechnika, 96(8), 15-18. Retrieved from