Fillers in electrical papers for power transformers

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations


The electric papers have a wide variety of uses like in transformers, cables and power capacitors. Each application involves different requirements related to its mechanical and electric properties. The kraft is the dielectric paper most used due its high mechanical resistance and a dielectric strength of around 5 kV/mm that is increased up to 30 kV/mm when is impregnated with mineral oil and typically has a density of 0.7, nevertheless continuous improvements in the design, for example, of power transformers raise the need to improve its electrical properties particularly those related to its relative permittivity. In this article, structural parameters such as distribution and pore size of kraft paper and theoretical analysis for possible addition of nanofillers to improve their dielectric behavior are reported. A possible and better criterion for designing transformers can be the employment of kraft paper nano-inserted with 5% of TiO2 or BaTiO3 stew in mineral oil and immersed in natural ester liquid.

Original languageEnglish
Title of host publicationMaterial Research and Applications
PublisherTrans Tech Publications
Number of pages6
ISBN (Print)9783037859933
StatePublished - 1 Jan 2014
Externally publishedYes
Event2012 International Conference on Advanced Material and Manufacturing Science, ICAMMS 2012 - Beijing, China
Duration: 20 Dec 201221 Dec 2012

Publication series

NameAdvanced Materials Research
ISSN (Print)1022-6680


Conference2012 International Conference on Advanced Material and Manufacturing Science, ICAMMS 2012


  • Electrical papers
  • Kraft
  • Nanofillers
  • Porosity


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