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REVISTA DE CHIMIE
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https://doi.org/10.37358/Rev.Chim.1949

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Revista de Chimie (Rev. Chim.), Year 2018, Volume 69, Issue 1, 91-95

https://doi.org/10.37358/RC.18.1.6050

Iosif Lingvay, Ion Patru, Livia Carmen Ungureanu, Valerica Stanoi, Adriana Mariana Bors

Electro-insulating Paper Degradation in Various Electro-insulating Fluids

Abstract:

The durability and safe operation of electrical equipment and devices with mixed insulation systems (solid/fluid - electro-insulating paper/oil) is determined by the insulation aging under simultaneous and synergic actions of electrical, thermal and chemical stress factors etc. In this context, degradations of insulating paper exposed to thermal aging in 5 different types of electro-insulating fluid have been studied experimentally. Liquid chromatography determinations have shown that the total content in furan products (resulting from cellulose degradation) in mineral oils is substantially higher than in electro-insulating fluid sorts based on of synthetic ester and/or natural ester (vegetable oil). This is due to the temperature between 90 oC and 130 oC when the activation energy of the furans formation process is up to 7.5 times lower in mineral oils than in ester-based oils. Degree determinations of cellulose polymerization (viscosimetric method) before and after exposure to heat treatment indicated that mineral oils degrade the electro-insulating paper much more strongly than ester-based oils (both synthetic and natural). Obtained results by liquid chromatography and by viscosity are in accordance with the images obtained by optical microscopy (at X 100).
Keywords:
insulating paper; insulation ageing; furan products; degree of polymerization; mineral oils; synthetic esters; natural esters

Issue: 2018, Volume 69, Issue 1
Pages: 91-95
Publication date: 2018/2/15
https://doi.org/10.37358/RC.18.1.6050
download pdf   Download Pdf Article
Creative Commons License
This article is published under the Creative Commons Attribution 4.0 International License
Citation Styles
Cite this article as:
LINGVAY, I., PATRU, I., UNGUREANU, L.C., STANOI, V., BORS, A.M., Electro-insulating Paper Degradation in Various Electro-insulating Fluids, Rev. Chim., 69(1), 2018, 91-95.

Vancouver
Lingvay I, Patru I, Ungureanu LC, Stanoi V, Bors AM. Electro-insulating Paper Degradation in Various Electro-insulating Fluids. Rev. Chim.[internet]. 2018 Jan;69(1):91-95. Available from: https://doi.org/10.37358/RC.18.1.6050


APA 6th edition
Lingvay, I., Patru, I., Ungureanu, L.C., Stanoi, V. & Bors, A.M. (2018). Electro-insulating Paper Degradation in Various Electro-insulating Fluids. Revista de Chimie, 69(1), 91-95. https://doi.org/10.37358/RC.18.1.6050


Harvard
Lingvay, I., Patru, I., Ungureanu, L.C., Stanoi, V., Bors, A.M. (2018). 'Electro-insulating Paper Degradation in Various Electro-insulating Fluids', Revista de Chimie, 69(1), pp. 91-95. https://doi.org/10.37358/RC.18.1.6050


IEEE
I. Lingvay, I. Patru, L.C. Ungureanu, V. Stanoi, A.M. Bors, "Electro-insulating Paper Degradation in Various Electro-insulating Fluids". Revista de Chimie, vol. 69, no. 1, pp. 91-95, 2018. [online]. https://doi.org/10.37358/RC.18.1.6050


Text
Iosif Lingvay, Ion Patru, Livia Carmen Ungureanu, Valerica Stanoi, Adriana Mariana Bors,
Electro-insulating Paper Degradation in Various Electro-insulating Fluids,
Revista de Chimie,
Volume 69, Issue 1,
2018,
Pages 91-95,
ISSN 2668-8212,
https://doi.org/10.37358/RC.18.1.6050.
(https://revistadechimie.ro/Articles.asp?ID=6050)
Keywords: insulating paper; insulation ageing; furan products; degree of polymerization; mineral oils; synthetic esters; natural esters


RIS
TY - JOUR
T1 - Electro-insulating Paper Degradation in Various Electro-insulating Fluids
A1 - Lingvay, Iosif
A2 - Patru, Ion
A3 - Ungureanu, Livia Carmen
A4 - Stanoi, Valerica
A5 - Bors, Adriana Mariana
JF - Revista de Chimie
JO - Rev. Chim.
PB - Revista de Chimie SRL
SN - 2668-8212
Y1 - 2018
VL - 69
IS - 1
SP - 91
EP - 95
UR - https://doi.org/10.37358/RC.18.1.6050
KW - insulating paper
KW - insulation ageing
KW - furan products
KW - degree of polymerization
KW - mineral oils
KW - synthetic esters
KW - natural esters
ER -


BibTex
@article{RevCh2018P91,
author = {Lingvay Iosif and Patru Ion and Ungureanu Livia Carmen and Stanoi Valerica and Bors Adriana Mariana},
title = {Electro-insulating Paper Degradation in Various Electro-insulating Fluids},
journal = {Revista de Chimie},
volume = {69},
number = {1},
pages = {91-95},
year = {2018},
issn = {2668-8212},
doi = {https://doi.org/10.37358/RC.18.1.6050},
url = {https://revistadechimie.ro/Articles.asp?ID=6050}
}
 
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