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primary topic: Effect of acids formation on the breakdown voltage properties of transformer insulating oil

Effect of acids formation on the breakdown voltage properties of transformer insulating oil
type: AcademicArticle
type: Article
abstract: Studies show that acids influence the electrical insulation strength of transformer insulating oil. Thus, this study was conducted to verify the influence of Low Molecular Acid (LMA) and High Molecular Acid (HMA) on the breakdown voltage of transformer insulating oil. Different weight of LMA and HMA were added into transformer insulating oil samples and then mixed using hotplate magnetic stirrer at 50C and 750 rpm for 3 hours. Prior to the mixing process, mineral insulating oil samples were filtered, dried and its moisture content were determined according to ASTM D1533 standard test condition. After the mixing process, total acid number (TAN) and AC breakdown voltage (BdV) of the oil mixtures were measured according to standard test conditions of ASTM D974 and ASTM D1816 respectively. The obtained results verified that LMA significantly reduced the breakdown voltage of mineral insulating oil compared to HMA for acidity lower than 1 mg KOH/g. © Published under licence by IOP Publishing Ltd.
date: 2020
volume: 767
issue: 1
is part of: IOP Conference Series: Materials Science and Engineering
status: peerReviewed
status: published
author list: authors
type: EPrint
type: ConferenceItemEPrint
is part of: repository

Institute of Physics Publishing
type: Organization

IOP Conference Series: Materials Science and Engineering
type: Collection
issn: 17578981

Nor Hidayah Rahim
type: Person
given name: Nor Hidayah
family name: Rahim

Sharin Ab Ghani
type: Person
given name: Sharin Ab
family name: Ghani

Nur Hakimah Ab Aziz
type: Person
given name: Nur Hakimah
family name: Ab Aziz

Norazhar Abu Bakar
type: Person
given name: Norazhar Abu
family name: Bakar

Imran Sutan Chairul
type: Person
given name: Imran Sutan
family name: Chairul

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primary topic: Effect of acids formation on the breakdown voltage properties of transformer insulating oil