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primary topic: Comparative study of moisture treatment techniques for mineral insulating oil

Comparative study of moisture treatment techniques for mineral insulating oil
type: AcademicArticle
type: Article
abstract: The presence of moisture is one of the factors that promote degradation of transformer insulating oils and deterioration of cellulose insulation materials in oil-immersed power transformers, which affect the lifespan of the transformers. Realizing the importance of moisture in transformer insulating oils, this study compares the effectiveness of three moisture treatment techniques nitrogen bubbling technique (NBT), molecular sieve technique (MST), and vacuum oven technique (VOT)) for mineral oil (MO). The moisture content and AC breakdown voltage of the MO samples before and after moisture treatment were measured using Karl Fischer coulometric titrator and portable oil tester, respectively, in accordance with the American Society for Testing and Materials (ASTM) D1533 and ASTM D1816 standards. The results showed that NBT is the best moisture treatment technique for the MO, where the NBT reduced 80.79 of moisture present in the oil, followed by MST and VOT, which reduced 72.87 and 42.28 of moisture, respectively. The results also showed that the AC breakdown voltage of the MO samples after moisture treatment was improved owing to the reduction in moisture content. © 2023, Institute of Advanced Engineering and Science. All rights reserved.
date: 2023
volume: 12
issue: 6
is part of: Bulletin of Electrical Engineering and Informatics
status: peerReviewed
status: published
author list: authors
type: EPrint
type: ArticleEPrint
is part of: repository

Institute of Advanced Engineering and Science
type: Organization

Bulletin of Electrical Engineering and Informatics
type: Collection
issn: 20893191

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

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

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

Mohd Shahril Ahmad Khiar
type: Person
given name: Mohd Shahril Ahmad
family name: Khiar

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

Mohamad Nazri Mohamad Din
type: Person
given name: Mohamad Nazri Mohamad
family name: Din

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primary topic: Comparative study of moisture treatment techniques for mineral insulating oil