Identification of the breakdown and analysis of transformer 22/0.4 kV

Martin Brandt, Dagmar Faktorová, Róbert Seewald


The paper deals with the identification of the breakdown of the transformer withdrawn from operation because of repeated reaction of transformer protections. Successively the transformer was put of operation, removed from the distribution and put to diagnostic measurements. The analysis SFRA contributed to the interturn short circuit.

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Sedlák, J., Brandt, M., Seewald, R: Influence of remanent magnetization on the diagnostic of distribution 25MVA transformer by SFRA method In: ELEKTRO 2012 : 9th international conference IEEE, 2012. - ISBN 978-1-4673-1178-6. - 465-468.

Brandt, M., Michalík, J., Seewald, R., Sedlák, J.: Diagnostic measurements of 3-phase 25MVA transformer and their analysis In: Logistyka nauka : ISSN 1231-5478. - Nr. 6 (2011)

Sedlák, J., Seewald, R.: Influence of remanent magnetization on the diagnostic of transformer by SFRA method In: DESAM 2012 - Diagnostic of electrical machines and materials : 2th international conference, GEORG, 2012. - ISBN 978-80-89401-69-7. - p. 53-58

A. R. Von Hippel, A. S. Labounsky: Dielectric Materials and Applications. Artech House Inc., 1995.


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