Performance and failure during energy testing of zinc oxide varistor processed from different powder size fraction and passivation thickness

The processing of ZnO varistor has a long route with numerous contributing variables. The role of particle size distribution in the starting powder is very crucial in varistor fabrication and performance evaluation. The varistors are also needed to be passivated before the evaluation of electrical p...

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Main Authors: Karim A.N.M., Begum S., Hashmi M.S.J.
Other Authors: 57196885749
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Published: 2023
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spelling my.uniten.dspace-305432023-12-29T15:49:12Z Performance and failure during energy testing of zinc oxide varistor processed from different powder size fraction and passivation thickness Karim A.N.M. Begum S. Hashmi M.S.J. 57196885749 7101852571 36501681300 Electrical punctures Energy absorption capability Particle size Passivation thickness Varistor The processing of ZnO varistor has a long route with numerous contributing variables. The role of particle size distribution in the starting powder is very crucial in varistor fabrication and performance evaluation. The varistors are also needed to be passivated before the evaluation of electrical performance. It was envisaged that the passivation thickness would influence the failure characteristics during energy testing as heat dissipation would be affected by the thickness. To investigate the above phenomena, the standard as produced varistor powder was fractionated to different narrow distributions containing large, medium and fine particles. Though there was no appreciable difference in physical properties but it was higher for discs fabricated with finer fraction of powder. However, the affect on green strength was quite reverse. In terms of electrical performance, the varistor discs with fine fraction of powder exhibited better properties though the energy absorption capability was poor. The variation of passivation thickness did not influence the energy absorption capability that much but the failure mode was changed. The higher thickness caused the failure by electrical puncture. Final 2023-12-29T07:49:11Z 2023-12-29T07:49:11Z 2010 Article 2-s2.0-78651428147 https://www.scopus.com/inward/record.uri?eid=2-s2.0-78651428147&partnerID=40&md5=84ade9fe91032c43c220a4a5cb87f7ac https://irepository.uniten.edu.my/handle/123456789/30543 5 2 175 181 Scopus
institution Universiti Tenaga Nasional
building UNITEN Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Tenaga Nasional
content_source UNITEN Institutional Repository
url_provider http://dspace.uniten.edu.my/
topic Electrical punctures
Energy absorption capability
Particle size
Passivation thickness
Varistor
spellingShingle Electrical punctures
Energy absorption capability
Particle size
Passivation thickness
Varistor
Karim A.N.M.
Begum S.
Hashmi M.S.J.
Performance and failure during energy testing of zinc oxide varistor processed from different powder size fraction and passivation thickness
description The processing of ZnO varistor has a long route with numerous contributing variables. The role of particle size distribution in the starting powder is very crucial in varistor fabrication and performance evaluation. The varistors are also needed to be passivated before the evaluation of electrical performance. It was envisaged that the passivation thickness would influence the failure characteristics during energy testing as heat dissipation would be affected by the thickness. To investigate the above phenomena, the standard as produced varistor powder was fractionated to different narrow distributions containing large, medium and fine particles. Though there was no appreciable difference in physical properties but it was higher for discs fabricated with finer fraction of powder. However, the affect on green strength was quite reverse. In terms of electrical performance, the varistor discs with fine fraction of powder exhibited better properties though the energy absorption capability was poor. The variation of passivation thickness did not influence the energy absorption capability that much but the failure mode was changed. The higher thickness caused the failure by electrical puncture.
author2 57196885749
author_facet 57196885749
Karim A.N.M.
Begum S.
Hashmi M.S.J.
format Article
author Karim A.N.M.
Begum S.
Hashmi M.S.J.
author_sort Karim A.N.M.
title Performance and failure during energy testing of zinc oxide varistor processed from different powder size fraction and passivation thickness
title_short Performance and failure during energy testing of zinc oxide varistor processed from different powder size fraction and passivation thickness
title_full Performance and failure during energy testing of zinc oxide varistor processed from different powder size fraction and passivation thickness
title_fullStr Performance and failure during energy testing of zinc oxide varistor processed from different powder size fraction and passivation thickness
title_full_unstemmed Performance and failure during energy testing of zinc oxide varistor processed from different powder size fraction and passivation thickness
title_sort performance and failure during energy testing of zinc oxide varistor processed from different powder size fraction and passivation thickness
publishDate 2023
_version_ 1806423278084947968
score 13.222552