Aging markers for in-service natural ester-based insulating fluids

Autor:	Radosław Jasiński, L. Tulio, G. Almeida, H. M. Wilhelm
Rok vydání:	2011
Předmět:	Laboratory flask Acid value Materials science Moisture Chemical engineering chemistry Electrical insulation paper Dissipation factor chemistry.chemical_element Electrical and Electronic Engineering Degradation process Oxygen Kraft paper
Zdroj:	IEEE Transactions on Dielectrics and Electrical Insulation. 18:714-719
ISSN:	1070-9878
DOI:	10.1109/tdei.2011.5931057
Popis:	In this work, the degradation process of natural ester-based insulating fluids was evaluated through laboratory aging tests. Two distinct aging methodologies were used: natural ester-based insulating fluids were placed in sealed flasks at 120°C in the presence of Kraft insulating paper containing about 1.5 and 5 wt% moisture; and natural ester-based insulating fluids were aged with and without Kraft insulating paper containing 1.5 wt% moisture in an open system, adding oxygen at different temperatures. The results indicate that viscosity, acid number and dissipation factor are important markers to consider in monitoring service-aged natural ester fluids.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a36009ba3f1bb01c65561e8f2f0e030b https://doi.org/10.1109/tdei.2011.5931057 Zobrazit plný text záznamu