Comparative Tests of Partial Discharges in Nomex ® 910 Paper and Cellulose Paper

Hubert Moranda, Hanna Moscicka-Grzesiak, Piotr Przybylek, Krzysztof Walczak and Radoslaw Szewczyk
Additional contact information
Hubert Moranda: Institute of Electric Power Engineering, Poznan University of Technology, Piotrowo 3A, 61-138 Poznan, Poland
Hanna Moscicka-Grzesiak: Institute of Electric Power Engineering, Poznan University of Technology, Piotrowo 3A, 61-138 Poznan, Poland
Piotr Przybylek: Institute of Electric Power Engineering, Poznan University of Technology, Piotrowo 3A, 61-138 Poznan, Poland
Krzysztof Walczak: Institute of Electric Power Engineering, Poznan University of Technology, Piotrowo 3A, 61-138 Poznan, Poland
Radoslaw Szewczyk: DuPont, Postepu 17B, 02-676 Warszawa, Poland

Energies, 2020, vol. 13, issue 3, 1-8

Abstract: The article presents the results of comparative investigations of partial discharges in two insulation systems; aramid-enhanced cellulose paper-mineral oil, and pure cellulose paper-mineral oil. Partial discharges were investigated in a diagonal electric field with vertical and horizontal components. This field is treated as the most dangerous for insulation. The research was carried out on Nomex ® 910 paper and cellulose paper samples, each paper being 0.25 mm thick. Samples of the two materials were tested at four levels of moisture. The inception voltage of partial discharges of all samples tested decreased as their moisture content increases. It was also proved that Nomex ® 910 has a significantly higher partial discharge inception voltage than the cellulose paper, although this difference decreased with increasing moisture content.

Keywords: oil-paper insulation; aramid insulation; partial discharges; water content in insulation (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/13/3/647/pdf (application/pdf)
https://www.mdpi.com/1996-1073/13/3/647/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:13:y:2020:i:3:p:647-:d:315951

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().