Ageing Behaviour of Mineral Oil and Ester Liquids: a Comparative Study

Author

Fofana, I. ; Bouaïcha, A. ; Farzaneh, M. ; Sabau, J.

Author_Institution

Univ. of Quebec at Chicoutimi, Chicoutimi, QC

fYear

2008

fDate

26-29 Oct. 2008

Firstpage

87

Lastpage

90

Abstract

There is a general agreement that in service conditions the quality of insulating fluids gradually deteriorates under the impact of electrical, thermal and chemical stress. Two ASTM methods are used to monitor the deterioration of liquid insulation step by step. A comparison is made between the performances of a commercial based mineral oil and ester fluids. The results obtained using a laboratory grade spectrophotometer and a ratio-turbidimeter, indicate that the absorbance increases by a significant and easily observable margin with ageing rate. Under the same aging condition, synthetic ester ages considerably slower than mineral oil; natural ester showing an intermediate behaviour.

Keywords

spectrophotometers; transformer oil; turbidimetry; ageing behaviour; ester liquids; liquid insulation; mineral oil; ratio-turbidimeter; spectrophotometer; Aging; Dielectric liquids; Dielectrics and electrical insulation; Electrons; Laboratories; Minerals; Oil insulation; Petroleum; Power transformer insulation; Thermal stresses;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation and Dielectric Phenomena, 2008. CEIDP 2008. Annual Report Conference on

Conference_Location

Quebec, QC

Print_ISBN

978-1-4244-2548-8

Electronic_ISBN

978-1-4244-2549-5

Type

conf

DOI

10.1109/CEIDP.2008.4772843

Filename

4772843