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

Autor:	Hubert Moranda, Hanna Moscicka-Grzesiak, Piotr Przybylek, Krzysztof Walczak, Radoslaw Szewczyk
Jazyk:	angličtina
Rok vydání:	2020
Předmět:	oil-paper insulation aramid insulation partial discharges water content in insulation Technology
Zdroj:	Energies, Vol 13, Iss 3, p 647 (2020)
Druh dokumentu:	article
ISSN:	1996-1073 13030647
DOI:	10.3390/en13030647
Popis:	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.
Databáze:	Directory of Open Access Journals
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