{"id":14459,"date":"2026-01-02T15:50:51","date_gmt":"2026-01-02T14:50:51","guid":{"rendered":"https:\/\/testnordic.se\/?post_type=product&#038;p=14459"},"modified":"2026-01-02T15:52:58","modified_gmt":"2026-01-02T14:52:58","slug":"transformer-demagnetizer-dem-series","status":"publish","type":"product","link":"https:\/\/testnordic.se\/en\/product\/transformer-demagnetizer-dem-series\/","title":{"rendered":"Transformer Demagnetizer DEM60R"},"content":{"rendered":"<h2>Three-Phase Transformer Demagnetizer<\/h2>\n<p>&nbsp;<\/p>\n<p>After a DC current test,\u00a0<a href=\"https:\/\/www.dv-power.com\/product\/winding-ohmmeters-tap-changer-analyzers\/\">such as winding resistance measurement<\/a>, the magnetic core of a power or instrument transformer may be magnetized (remnant magnetism). It can cause various problems such as wrong diagnostics, inaccurate measurements on a transformer, inrush current at the start-up of a power transformer, or incorrect operation of protective relays due to magnetized CT cores. The best way to eliminate this source of potential problems is to use a demagnetizer on the power or instrument transformer.<\/p>\n<p><strong>The DEM60R demagnetizer is a fully automatic test instrument that performs three-phase transformer demagnetization.<\/strong> Transformer magnetic core demagnetization requires the application of AC current with a magnitude decreasing to zero. DEM60R provides this AC current by internally changing the polarity of a controlled DC current. During the demagnetization process, the instrument supplies the current at decreasing magnitude for each step, following a proprietary algorithm. It can demagnetize single-phase and three-phase power transformers.<\/p>\n<p>&nbsp;<\/p>\n<h2>Key Features<\/h2>\n<ul>\n<li>Fully automatic demagnetization<\/li>\n<li>Calculation of remanent magnetism<\/li>\n<li>Demagnetization currents 5 mA \u2013 60 A DC<\/li>\n<li>Demagnetization progress graph<\/li>\n<li>Automatic discharging circuit<\/li>\n<li>Lightweight \u2013 13.1 kg \/ 28.8 lbs<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h2>Datasheet:<\/h2>\n<div class='w3eden'><!-- WPDM Link Template: Default Template -->\n\n<div class=\"link-template-default card mb-2\">\n    <div class=\"card-body\">\n        <div class=\"media\">\n            <div class=\"mr-3 img-48\"><img decoding=\"async\" class=\"wpdm_icon\" alt=\"Icon\" src=\"https:\/\/testnordic.se\/wp-content\/plugins\/download-manager\/assets\/file-type-icons\/pdf.svg\" \/><\/div>\n            <div class=\"media-body\">\n                <h3 class=\"package-title\"><a href='https:\/\/testnordic.se\/en\/download\/dem-serien\/'>DEM-serien<\/a><\/h3>\n                <div class=\"text-muted text-small\"><i class=\"fas fa-copy\"><\/i> 1 file(s) <i class=\"fas fa-hdd ml-3\"><\/i> 262.07 KB<\/div>\n            <\/div>\n            <div class=\"ml-3\">\n                <a class='wpdm-download-link download-on-click btn btn-primary ' rel='nofollow' href='#' data-downloadurl=\"https:\/\/testnordic.se\/en\/download\/dem-serien\/?wpdmdl=14448&refresh=6a574135276ee1784103221\">Download<\/a>\n            <\/div>\n        <\/div>\n    <\/div>\n<\/div>\n\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p><strong>Three-Phase Transformer Demagnetizer<\/strong><\/p>\n<p>The DEM60R demagnetizer is a fully automatic test instrument that performs three-phase transformer demagnetization.<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-9259\" src=\"https:\/\/testnordic.com\/wp-content\/uploads\/2022\/02\/Logo-2023-08-14.jpg\" alt=\"\" width=\"202\" height=\"53\" srcset=\"https:\/\/testnordic.se\/wp-content\/uploads\/2022\/02\/Logo-2023-08-14.jpg 202w, https:\/\/testnordic.se\/wp-content\/uploads\/2022\/02\/Logo-2023-08-14-64x17.jpg 64w\" sizes=\"(max-width: 202px) 100vw, 202px\" \/><\/p>\n","protected":false},"featured_media":14452,"template":"","meta":{"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":""},"product_brand":[],"product_cat":[302],"product_tag":[],"yst_prominent_words":[],"class_list":{"0":"post-14459","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-transformer-testing","8":"first","9":"instock","10":"taxable","11":"shipping-taxable","12":"product-type-simple","13":"entry","14":"content-bg","15":"loop-entry"},"_links":{"self":[{"href":"https:\/\/testnordic.se\/en\/wp-json\/wp\/v2\/product\/14459","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/testnordic.se\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/testnordic.se\/en\/wp-json\/wp\/v2\/types\/product"}],"version-history":[{"count":4,"href":"https:\/\/testnordic.se\/en\/wp-json\/wp\/v2\/product\/14459\/revisions"}],"predecessor-version":[{"id":14637,"href":"https:\/\/testnordic.se\/en\/wp-json\/wp\/v2\/product\/14459\/revisions\/14637"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/testnordic.se\/en\/wp-json\/wp\/v2\/media\/14452"}],"wp:attachment":[{"href":"https:\/\/testnordic.se\/en\/wp-json\/wp\/v2\/media?parent=14459"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/testnordic.se\/en\/wp-json\/wp\/v2\/product_brand?post=14459"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/testnordic.se\/en\/wp-json\/wp\/v2\/product_cat?post=14459"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/testnordic.se\/en\/wp-json\/wp\/v2\/product_tag?post=14459"},{"taxonomy":"yst_prominent_words","embeddable":true,"href":"https:\/\/testnordic.se\/en\/wp-json\/wp\/v2\/yst_prominent_words?post=14459"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}