Investigations on the impact of moisture and aging on the charge de-trapping characteristics of ester oil-impregnated pressboard using PDC measurements

Investigations on the impact of moisture and aging on the charge de-trapping characteristics of ester oil-impregnated pressboard using PDC measurements | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Investigations on the impact of moisture and aging on the charge de-trapping characteristics of ester oil-impregnated pressboard using PDC measurements Soumyadeep Chowdhury, Alok Kumar, Nasirul Haque This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-7029777/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract With intrusion of moisture and aging, the dielectric characteristics of oil-paper insulation undergo deterioration. Some of the important specifications for assessing the insulation health of oil paper include space charge accumulation and charge trapping characteristics in the insulation. Both criteria are significantly affected by the deterioration of the insulation. In this study, the effect of these two crucial factors on the charge trapping characteristics of natural ester impregnated pressboard insulation have been examined using Isothermal Relaxation Current (IRC) and Polarization-Depolarization Current (PDC) analysis. To accomplish this, both polarization-depolarization current (PDC) measurements and IRC measurements were conducted on carefully prepared ester oil-impregnated pressboard specimens with varying aging conditions and moisture contents. The findings outlined in this study underscore that aging and moisture notably affect charge trapping characteristics, however in a quite different manner. aging moisture natural ester space charge trap depth pressboard PDC IRC Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-7029777","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":484999481,"identity":"a8075571-2f2c-45ce-9b52-b061a648badb","order_by":0,"name":"Soumyadeep Chowdhury","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA7klEQVRIiWNgGAWjYPACZhDB+CDBAMpPIFILswHJWtgkiHKRfHuP6WaeGms5funmZxUPCurkGdgPP2B4uAO3FoMzZ8xu8xxLN5acc8zsRoLBYcMGnjQDhsQzeLRI5AC1sB1O3HAjhw2o5QDQFzkMDIlteBw2A6Tl3+H6/UAtBQkGdQkM/G/wa2G4AdTC23Y4AWgdG0OCAXMCgwQBWwzOHCu7Obcv3XDGnWPGEiC/tEk8MziA12HtzdtuvPlmLc8/u/nhxx9/6uT5+ZMfPvyJz2FAwMQDImGRwgbEB/BrACaUH8haRsEoGAWjYBSgAwCbhk6pOBgHTwAAAABJRU5ErkJggg==","orcid":"","institution":"Indian Institute of Science Bangalore","correspondingAuthor":true,"prefix":"","firstName":"Soumyadeep","middleName":"","lastName":"Chowdhury","suffix":""},{"id":484999485,"identity":"04bddc30-e2ca-4245-a543-a138a85b29e8","order_by":1,"name":"Alok Kumar","email":"","orcid":"","institution":"National Institute of Technology Calicut","correspondingAuthor":false,"prefix":"","firstName":"Alok","middleName":"","lastName":"Kumar","suffix":""},{"id":484999487,"identity":"6a4e5c56-ec35-4d91-bfcb-fc2e60e37fce","order_by":2,"name":"Nasirul Haque","email":"","orcid":"","institution":"National Institute of Technology Calicut","correspondingAuthor":false,"prefix":"","firstName":"Nasirul","middleName":"","lastName":"Haque","suffix":""}],"badges":[],"createdAt":"2025-07-02 13:23:17","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-7029777/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-7029777/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":88928734,"identity":"efdc75f3-d155-46ff-9a29-53e7e3cc5dad","added_by":"auto","created_at":"2025-08-12 20:16:27","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":872523,"visible":true,"origin":"","legend":"","description":"","filename":"soumyadeepjournalfinalsubmission.pdf","url":"https://assets-eu.researchsquare.com/files/rs-7029777/v1_covered_10b75b79-e409-418e-bbbd-70dced8980f1.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"Investigations on the impact of moisture and aging on the charge de-trapping characteristics of ester oil-impregnated pressboard using PDC measurements","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":true,"highlight":"","institution":"","isAcceptedByJournal":false,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true},"keywords":"aging, moisture, natural ester, space charge, trap depth, pressboard, PDC, IRC","lastPublishedDoi":"10.21203/rs.3.rs-7029777/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-7029777/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eWith intrusion of moisture and aging, the dielectric characteristics of oil-paper insulation undergo deterioration. 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