{"id":14660,"date":"2026-07-14T09:00:00","date_gmt":"2026-07-14T07:00:00","guid":{"rendered":"https:\/\/tps-elektronik.com\/?post_type=case_studies&#038;p=14660"},"modified":"2026-06-16T08:30:12","modified_gmt":"2026-06-16T06:30:12","slug":"how-to-restore-and-upgrade-obsolete-industrial-transformer-windings-with-tps-reverse-engineering-and-rapid-redesign-service-for-legacy-power-equipment","status":"publish","type":"case_studies","link":"https:\/\/tps-elektronik.com\/en\/case-studies\/how-to-restore-and-upgrade-obsolete-industrial-transformer-windings-with-tps-reverse-engineering-and-rapid-redesign-service-for-legacy-power-equipment\/","title":{"rendered":"How to Restore and Upgrade Obsolete Industrial Transformer Windings with TPS Reverse Engineering and Rapid Redesign Service for Legacy Power Equipment?"},"content":{"rendered":"<article class=\"blog-post\" lang=\"en\"><header>\n<p>Plant engineers and maintenance teams rarely fail because they lack a budget for new equipment. They lose time\u2014and production. When a critical, custom\u2011wound transformer in a legacy machine fails and the original manufacturer no longer exists, has acquired, or simply no longer supports the part. The result is a paper mill or a chemical processing line that sits idle, hemorrhaging revenue. While the procurement team searches desperately for a replacement that was custom\u2011built in 1987.<br \/>TPS Elektronik\u2019s <strong>reverse engineering and rapid redesign service<\/strong> for transformer windings built for exactly this scenario. When a large paper mill faced a catastrophic failure of a custom gate\u2011drive transformer in a legacy drive system, TPS able to de\u2011construct the failed unit, reverse\u2011engineer its electrical and mechanical specifications, and manufacture a new, upgraded winding that fit the original footprint. All within a timeframe that minimized costly production downtime.<\/p>\n<p><a class=\"cta-primary\" href=\"https:\/\/tps-elektronik.com\/en\/services\/ems\/winding-goods\/\">Request a legacy transformer restoration consultation \u2192<\/a><\/p>\n<\/header><nav class=\"toc\" aria-label=\"Table of contents\">\n<h2 id=\"toc-en\">Table of contents<\/h2>\n<ol>\n<li><a href=\"#en-challenge\">The challenge: catastrophic failure of an obsolete component<\/a><\/li>\n<li><a href=\"#en-solution\">The TPS reverse engineering solution<\/a>\n<ol>\n<li><a href=\"#en-analyze\">Failure analysis and deconstruction<\/a><\/li>\n<li><a href=\"#en-redesign\">Rapid redesign and material upgrade<\/a><\/li>\n<li><a href=\"#en-test\">Testing and documentation<\/a><\/li>\n<\/ol>\n<\/li>\n<li><a href=\"#en-results\">Measurable results<\/a><\/li>\n<li><a href=\"#en-rfq\">RFQ checklist for legacy transformer restoration<\/a><\/li>\n<li><a href=\"#en-faq\">FAQ<\/a><\/li>\n<\/ol>\n<\/nav>\n<section id=\"en-challenge\">\n<h2>1. The challenge: catastrophic failure of an obsolete component<\/h2>\n<p>The mill\u2019s critical drive system relied on a custom, multi\u2011winding isolation transformer, supplying power to sensitive gate\u2011drive circuits. After decades of thermal cycling, the insulation on the original windings had become brittle and eventually failed, causing a short circuit. The original equipment manufacturer had been acquired and the transformer was no longer available. A full drive retrofit quoted at 18 weeks and a significant capital expense. The mill needed a faster, more cost\u2011effective solution. This situation perfectly illustrates the value of an <strong>obsolete transformer winding replacement<\/strong> service that can replicate and even improve upon the original design.<\/p>\n<\/section>\n<section id=\"en-solution\">\n<h2>2. The TPS reverse engineering solution<\/h2>\n<p>TPS proposed a two\u2011phase approach: rapidly reverse\u2011engineer the failed unit to create a precise manufacturing blueprint, then build a new, upgraded replacement winding using modern materials and automated winding processes for consistency. This approach is a core part of the <a href=\"https:\/\/tps-elektronik.com\/en\/ems-winding-goods-coil-winding-service\/\">EMS winding goods and coil winding service<\/a>.<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-14319\" src=\"https:\/\/tps-elektronik.com\/wp-content\/uploads\/2026\/06\/\u7ebf\u57085.jpg\" alt=\"pcb component procurement\" width=\"1920\" height=\"1280\" srcset=\"https:\/\/tps-elektronik.com\/wp-content\/uploads\/2026\/06\/\u7ebf\u57085.jpg 1920w, https:\/\/tps-elektronik.com\/wp-content\/uploads\/2026\/06\/\u7ebf\u57085-600x400.jpg 600w\" sizes=\"(max-width: 1920px) 100vw, 1920px\" \/><\/p>\n<h3 id=\"en-analyze\">2.1 Failure analysis and deconstruction<\/h3>\n<p>TPS engineers began with a careful teardown, documenting wire gauge, turns count, winding configuration, inter\u2011layer insulation type, and core dimensions. This step is often the most delicate, as a damaged coil can easily lose its form. The data used to create a complete electrical and mechanical specification.<\/p>\n<h3 id=\"en-redesign\">2.2 Rapid redesign and material upgrade<\/h3>\n<p>While the electrical specifications were preserved, TPS proposed a material upgrade. The original polyester insulation (Class\u202fF, 155\u202f\u00b0C) was replaced with a modern polyimide insulation rated for Class\u202fH (180\u202f\u00b0C), significantly improving the thermal margin and service life. TPS then manufactured the new winding using its automated multi\u2011axis CNC winding equipment. Which ensuring perfect layer alignment and consistent tension. This ability to handle diverse materials detailed in our guide to <a href=\"https:\/\/tps-elektronik.com\/en\/wire-insulation-materials-types-applications\/\">wire insulation materials, types, and applications<\/a>. This approach ensured the upgraded replacement met all performance criteria of the original equipment.<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-14258\" src=\"https:\/\/tps-elektronik.com\/wp-content\/uploads\/2026\/06\/\u7ebf\u57084.jpg\" alt=\"component procurement service\" width=\"1920\" height=\"1280\" srcset=\"https:\/\/tps-elektronik.com\/wp-content\/uploads\/2026\/06\/\u7ebf\u57084.jpg 1920w, https:\/\/tps-elektronik.com\/wp-content\/uploads\/2026\/06\/\u7ebf\u57084-600x400.jpg 600w\" sizes=\"(max-width: 1920px) 100vw, 1920px\" \/><\/p>\n<h3 id=\"en-test\">2.3 Testing and documentation<\/h3>\n<p>Before shipment, the new winding underwent full electrical testing, including inductance, turns ratio, DC resistance, and a high\u2011potential (hipot) test at 125\u202f% of the rated working voltage to ensure isolation integrity. A full test report provided, giving the mill\u2019s engineering team the documentation needed for their internal safety audits.<\/p>\n<\/section>\n<section id=\"en-results\">\n<h2>3. Measurable results<\/h2>\n<p>The new, custom\u2011manufactured transformer winding was a drop\u2011in replacement for the original, fitting perfectly into the existing core and chassis. The entire process, from failure analysis to delivery of the replacement, completed in a fraction of the time quoted for a full drive retrofit. The production line restored to operation rapidly, saving the mill significant lost revenue. Furthermore, the upgraded insulation class ensures a longer operational life, providing a higher return on the repair investment. This success underscores the value of TPS&#8217;s broader production\u2011ready approach, as detailed in our resource on <a href=\"https:\/\/tps-elektronik.com\/en\/ems-winding-goods-toroidal-coils-dv-dt-chokes-production-ready-transformers\/\">toroidal coils, dv\/dt chokes, and production\u2011ready transformers<\/a>.<\/p>\n<\/section>\n<section id=\"en-rfq\">\n<h2>4. RFQ checklist for legacy transformer restoration<\/h2>\n<ul>\n<li><strong>Original unit<\/strong>: The failed transformer, even if damaged, is critical for reverse engineering.<\/li>\n<li><strong>Nameplate data<\/strong>: If available, provide input\/output voltage, VA rating, and any other specifications.<\/li>\n<li><strong>Application details<\/strong>: Describe the function of the transformer in the circuit (e.g., gate drive, isolation, flyback).<\/li>\n<li><strong>Upgrade goals<\/strong>: Specify if a higher insulation class or other performance improvements are desired.<\/li>\n<li><strong>Quantity<\/strong>: Initial replacement quantity and potential for future stock.<\/li>\n<li><strong>Urgency<\/strong>: Required delivery date to minimize downtime.<\/li>\n<\/ul>\n<p><a class=\"cta-primary\" href=\"https:\/\/tps-elektronik.com\/en\/services\/ems\/winding-goods\/\">Submit your legacy transformer RFQ \u2192<\/a><\/p>\n<\/section>\n<section id=\"en-faq\">\n<h2>5. FAQ<\/h2>\n<p><strong>What if my failed transformer is physically destroyed and cannot be measured?<\/strong><br \/>If a physical copy is unmeasurable, TPS engineers can often reverse\u2011engineer from the device\u2019s schematic, the core geometry, and the remaining circuit parameters to reconstruct the winding specification.<\/p>\n<p><strong>Can TPS upgrade the insulation class of my legacy transformer?<\/strong><br \/>Yes. TPS commonly upgrades legacy Class\u202fA or B insulations to modern Class\u202fF or H using high\u2011grade polyimide or other advanced materials, extending operational life.<\/p>\n<p><strong>Does TPS provide testing documentation for the new part?<\/strong><br \/>Yes. A full electrical test report, including hipot, inductance, and resistance measurements, is provided, which is essential for safety audit compliance.<\/p>\n<p><strong>Where can I learn more about TPS\u2019s broader winding capabilities?<\/strong><br \/>Visit the <a href=\"https:\/\/tps-elektronik.com\/en\/services\/ems\/winding-goods\/\">TPS winding goods service page<\/a>, or explore our technical guide on <a href=\"https:\/\/tps-elektronik.com\/en\/helmholtz-coil-uniform-magnetic-field-guide\/\">Helmholtz coil applications<\/a>.<\/p>\n<\/section>\n<footer style=\"background: #2d5797; padding: 30px; border-radius: 14px; margin-top: 40px;\">\n<p style=\"color: #ffffff; font-size: 16px; line-height: 1.6; margin: 0;\"><strong>Don&#8217;t let an obsolete transformer shut down your production.<\/strong><br \/>Contact TPS Elektronik for a reverse engineering and rapid redesign service that restores and upgrades your critical legacy equipment.<br \/><a style=\"color: #ffffff; font-weight: 600; text-decoration: underline; display: block; margin-top: 10px;\" href=\"https:\/\/tps-elektronik.com\/en\/services\/ems\/winding-goods\/\">Request your legacy transformer restoration consultation \u2192<\/a><\/p>\n<\/footer><\/article>\n\n<style id=\"wpforms-css-vars-4659-block-695bae4a-85ec-4ccb-b3a9-57a8b2eb0a67\">\n\t\t\t\t#wpforms-4659.wpforms-block-695bae4a-85ec-4ccb-b3a9-57a8b2eb0a67 {\n\t\t\t\t--wpforms-field-size-input-height: 43px;\n--wpforms-field-size-input-spacing: 15px;\n--wpforms-field-size-font-size: 16px;\n--wpforms-field-size-line-height: 19px;\n--wpforms-field-size-padding-h: 14px;\n--wpforms-field-size-checkbox-size: 16px;\n--wpforms-field-size-sublabel-spacing: 5px;\n--wpforms-field-size-icon-size: 1;\n--wpforms-label-size-font-size: 16px;\n--wpforms-label-size-line-height: 19px;\n--wpforms-label-size-sublabel-font-size: 14px;\n--wpforms-label-size-sublabel-line-height: 17px;\n--wpforms-button-size-font-size: 17px;\n--wpforms-button-size-height: 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They lose time\u2014and production. When a critical, custom\u2011wound transformer in a legacy machine fails and the original manufacturer no longer exists, has acquired, or simply no longer supports the part. The result is a paper mill or a chemical processing\u2026 <a href=\"https:\/\/tps-elektronik.com\/en\/case-studies\/how-to-restore-and-upgrade-obsolete-industrial-transformer-windings-with-tps-reverse-engineering-and-rapid-redesign-service-for-legacy-power-equipment\/\">Read More &raquo;<\/a><\/p>\n","protected":false},"author":9,"featured_media":14612,"template":"","class_list":["post-14660","case_studies","type-case_studies","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>How to Restore and Upgrade Obsolete Industrial Transformer Windings with TPS Reverse Engineering and Rapid Redesign Service for Legacy Power Equipment? - TPS<\/title>\n<meta name=\"description\" content=\"TPS reverse engineering and rapid redesign service restores obsolete industrial transformer windings. 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