{"id":6882,"date":"2025-11-28T17:44:09","date_gmt":"2025-11-28T17:44:09","guid":{"rendered":"https:\/\/www.weidmann-electrical.com\/?p=6882"},"modified":"2025-11-28T17:44:13","modified_gmt":"2025-11-28T17:44:13","slug":"optimized-insulation-for-data-center-transformers","status":"publish","type":"post","link":"https:\/\/www.weidmann-electrical.com\/de\/news\/optimized-insulation-for-data-center-transformers\/","title":{"rendered":"Optimized Insulation for Data Center Transformers"},"content":{"rendered":"\n<h4 class=\"wp-block-cite-wordpress-theme-heading has-mb-spacing-20 has-md-font-size\" id=\"industry-trends\">Industry Trends<\/h4>\n\n\n\n<p>The global data center transformer market is projected to grow significantly during the next five years, driven by the growing demand for Artificial Intelligence (AI), cloud computing, big data analytics, and internet services. Increasing digitalization across multiple industries, rising use of AI, and general internet use have led to huge data processing and storage needs that require a more robust and efficient power infrastructure.<\/p>\n\n\n\n<p>There is increasing demand for energy-efficient transformers with an emphasis on reducing energy consumption and minimizing carbon footprint. Transformers are designed to ensure consistent and stable power distribution, which is critical to maintaining operational efficiency, reducing downtime, and meeting high-energy demands.<\/p>\n\n\n\n<p>Transformers for data centers have become increasingly larger (2500 kVA and above). Commonly, these transformers are designed with layer-type windings up to 6300 kVA and even greater.<\/p>\n\n\n\n<h4 class=\"wp-block-cite-wordpress-theme-heading has-mb-spacing-20 has-md-font-size\" id=\"industry-trends\">Challenges for Data Center Transformers<\/h4>\n\n\n\n<p><strong>Design Challenges:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/strong><\/p>\n\n\n\n<p> Data center applications can lead to increased thermal, electrical, and mechanical stresses on transformers<\/p>\n\n\n\n<p><strong>OEM\/End-User Challenges:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Under-utilized excessive transformer capacity<\/li>\n\n\n\n<li>Shorter life span\/reliability due to high-stress environments<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-cite-wordpress-theme-heading has-mb-spacing-20 has-md-font-size\" id=\"industry-trends\">Optimized Insulation System<\/h4>\n\n\n\n<p>Transformer solid insulation largely defines the major transformer characteristics, including:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Size, weight, footprint, and cost<\/li>\n\n\n\n<li>Losses and efficiency<\/li>\n\n\n\n<li>Long-term reliability and failure resistance<\/li>\n<\/ul>\n\n\n\n<p>As layer insulation is the key solid insulation material, a special <a href=\"https:\/\/www.weidmann-electrical.com\/products\/insulation-paper\/coated-paper\/\">\u201cengineered paper\u201d<\/a> with enhanced properties can optimize and improve performance for the following reasons:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Withstands higher temperatures<\/li>\n\n\n\n<li>Enables faster and higher-quality processing at the OEM factory<\/li>\n\n\n\n<li>Has improved dielectric performance<\/li>\n\n\n\n<li>Can help to reduce the overall size and weight of the transformer<\/li>\n\n\n\n<li>Aids cost efficiencies and can yield a general reduction in the cost of the transformer<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"626\" height=\"400\" src=\"https:\/\/www.weidmann-electrical.com\/wp-content\/uploads\/sites\/2\/2025\/11\/Picture-1.jpg\" alt=\"\" class=\"wp-image-6888\" style=\"width:500px\" srcset=\"https:\/\/www.weidmann-electrical.com\/wp-content\/uploads\/sites\/2\/2025\/11\/Picture-1.jpg 626w, https:\/\/www.weidmann-electrical.com\/wp-content\/uploads\/sites\/2\/2025\/11\/Picture-1-300x192.jpg 300w, https:\/\/www.weidmann-electrical.com\/wp-content\/uploads\/sites\/2\/2025\/11\/Picture-1-600x383.jpg 600w\" sizes=\"auto, (max-width: 626px) 100vw, 626px\" \/><\/figure>\n\n\n\n<p class=\"has-text-align-center has-small-font-size\"><em>Layer-Type Transformer Windings \u2013 Key Solid Insulation Material = Paper<\/em><\/p>\n\n\n\n<h4 class=\"wp-block-cite-wordpress-theme-heading has-mb-spacing-20 has-md-font-size\" id=\"advanced-insulation-paper-diamond-pattern-enhanced-dpe-paper-from-weidmann\">Advanced Insulation Paper \u2013 Diamond Pattern Enhanced (DPE) Paper from Weidmann<\/h4>\n\n\n\n<p><a href=\"https:\/\/www.weidmann-electrical.com\/wp-content\/uploads\/sites\/2\/2025\/05\/INSULutions-DPE-Data-Sheet.pdf\">DPE<\/a> is a special-grade layer insulation paper for liquid-immersed layer-type transformers. INSULutions\u2122 DPE provides:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Higher thermal endurance (in both mineral oil and ester liquid) \u2013 slower aging<\/li>\n\n\n\n<li>Better (faster) drying \u2013 quality and productivity improvement<\/li>\n\n\n\n<li>Better (faster) impregnation with dielectric liquids \u2013 quality and productivity improvement<\/li>\n\n\n\n<li>Better dielectric performance \u2013 potentially improved dielectric insulation design<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-cite-wordpress-theme-heading has-mb-spacing-20 has-md-font-size\" id=\"dpe-higher-thermal-class-paper-for-slower-aging-and-longer-life\">DPE \u2013 Higher Thermal Class Paper for Slower Aging and Longer Life<\/h4>\n\n\n\n<p><a href=\"https:\/\/www.weidmann-group.com\/news\/insulutions-dpe-improving-your-distribution-transformers-performance\/\">INSULutions\u2122 DPE<\/a> is qualified up to 130\u00b0C in mineral oil and up to 140\u00b0C in ester liquid. Weidmann\u2019s IEEE C57.100 \u2013 2011-certified aging tests helped to determine the end-of-life criteria of transformer insulating systems and a procedure to define the insulation system life equation and thermal index, which then relates to the thermal class of the insulation system.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"940\" height=\"700\" src=\"https:\/\/www.weidmann-electrical.com\/wp-content\/uploads\/sites\/2\/2025\/11\/DPE-940x700-1.jpg\" alt=\"\" class=\"wp-image-6905\" style=\"width:500px\" srcset=\"https:\/\/www.weidmann-electrical.com\/wp-content\/uploads\/sites\/2\/2025\/11\/DPE-940x700-1.jpg 940w, https:\/\/www.weidmann-electrical.com\/wp-content\/uploads\/sites\/2\/2025\/11\/DPE-940x700-1-300x223.jpg 300w, https:\/\/www.weidmann-electrical.com\/wp-content\/uploads\/sites\/2\/2025\/11\/DPE-940x700-1-768x572.jpg 768w, https:\/\/www.weidmann-electrical.com\/wp-content\/uploads\/sites\/2\/2025\/11\/DPE-940x700-1-600x447.jpg 600w\" sizes=\"auto, (max-width: 940px) 100vw, 940px\" \/><\/figure>\n\n\n\n<p class=\"has-text-align-center has-small-font-size\"><em>INSULutions\u2122 DPE Diamond Pattern Enhanced (DPE) layer insulation paper<\/em><\/p>\n\n\n\n<h4 class=\"wp-block-cite-wordpress-theme-heading has-mb-spacing-20 has-md-font-size\" id=\"application-options-to-utilize-the-benefit-of-higher-thermal-class-dpe-paper\">Application Options to Utilize the Benefit of Higher Thermal Class DPE Paper<\/h4>\n\n\n\n<p><strong>1. High-Temperature-Rated Designs<\/strong><\/p>\n\n\n\n<p>Using Weidmann\u2019s enhanced insulating DPE paper in layer-type transformers allows:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Increase up to 75\u00b0C Average Winding Rise (AWR) temperature with mineral oil<\/li>\n\n\n\n<li>Increase up to 85\u00b0C AWR temperature in ester liquid<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1940\" height=\"1092\" src=\"https:\/\/www.weidmann-electrical.com\/wp-content\/uploads\/sites\/2\/2025\/11\/Insulation-system-thermal-class-options-using-DPE-paper-IEEE-terminology.png\" alt=\"\" class=\"wp-image-6910\" style=\"width:500px\" srcset=\"https:\/\/www.weidmann-electrical.com\/wp-content\/uploads\/sites\/2\/2025\/11\/Insulation-system-thermal-class-options-using-DPE-paper-IEEE-terminology.png 1940w, https:\/\/www.weidmann-electrical.com\/wp-content\/uploads\/sites\/2\/2025\/11\/Insulation-system-thermal-class-options-using-DPE-paper-IEEE-terminology-300x169.png 300w, https:\/\/www.weidmann-electrical.com\/wp-content\/uploads\/sites\/2\/2025\/11\/Insulation-system-thermal-class-options-using-DPE-paper-IEEE-terminology-1024x576.png 1024w, https:\/\/www.weidmann-electrical.com\/wp-content\/uploads\/sites\/2\/2025\/11\/Insulation-system-thermal-class-options-using-DPE-paper-IEEE-terminology-768x432.png 768w, https:\/\/www.weidmann-electrical.com\/wp-content\/uploads\/sites\/2\/2025\/11\/Insulation-system-thermal-class-options-using-DPE-paper-IEEE-terminology-1536x865.png 1536w, https:\/\/www.weidmann-electrical.com\/wp-content\/uploads\/sites\/2\/2025\/11\/Insulation-system-thermal-class-options-using-DPE-paper-IEEE-terminology-600x338.png 600w, https:\/\/www.weidmann-electrical.com\/wp-content\/uploads\/sites\/2\/2025\/11\/Insulation-system-thermal-class-options-using-DPE-paper-IEEE-terminology-1320x743.png 1320w\" sizes=\"auto, (max-width: 1940px) 100vw, 1940px\" \/><\/figure>\n\n\n\n<p class=\"has-text-align-center has-small-font-size\"><em>Insulation system thermal class options using DPE paper (IEEE terminology)<\/em><\/p>\n\n\n\n<p><strong>2. Longer Life in Operation<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>An additional 10\u00b0C temperature \u201csafety margin\u201d<\/li>\n\n\n\n<li>Provides more than two times longer insulation life<\/li>\n\n\n\n<li>Increases transformer resilience against increased ambient and\/or operational temperatures<\/li>\n<\/ul>\n\n\n\n<p><strong>3. Higher Overload Capability<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Option 1: Same size transformer with about 20% higher overload capability <\/li>\n\n\n\n<li>Option 2: Smaller transformer in size, weight, and cost with equivalent overload capability and no load losses<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"892\" height=\"543\" src=\"https:\/\/www.weidmann-electrical.com\/wp-content\/uploads\/sites\/2\/2025\/11\/Picture-4.jpg\" alt=\"\" class=\"wp-image-6896\" style=\"width:500px\" srcset=\"https:\/\/www.weidmann-electrical.com\/wp-content\/uploads\/sites\/2\/2025\/11\/Picture-4.jpg 892w, https:\/\/www.weidmann-electrical.com\/wp-content\/uploads\/sites\/2\/2025\/11\/Picture-4-300x183.jpg 300w, https:\/\/www.weidmann-electrical.com\/wp-content\/uploads\/sites\/2\/2025\/11\/Picture-4-768x468.jpg 768w, https:\/\/www.weidmann-electrical.com\/wp-content\/uploads\/sites\/2\/2025\/11\/Picture-4-600x365.jpg 600w\" sizes=\"auto, (max-width: 892px) 100vw, 892px\" \/><\/figure>\n\n\n\n<p class=\"has-text-align-center has-small-font-size\"><em>The diagram shows an example of a 100 kVA inverter-connected transformer (3), with \u201cInitial Load\u201d = 30% of nameplate power and \u201cPeak Load\u201d duration = 8 hours<\/em><\/p>\n\n\n\n<p><strong>4. Dual Temperature Nameplate Designs and Sustainable Peak Load Transformers<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Enhanced DPE allows new dual temperature nameplate transformers: in mineral oil &#8211; 65\u00b0C\/ 75\u00b0C AWR; in ester liquids &#8211; 65\u00b0C\/ 85\u00b0C AWR or 75\u00b0C\/ 85\u00b0C AWR<\/li>\n\n\n\n<li>Transformers can be continuously loaded at peak load kVA with no effect on transformer reliability or lifetime<\/li>\n\n\n\n<li>Great also for variable loads when transformers operate below nameplate rating for significant periods<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-cite-wordpress-theme-heading has-mb-spacing-20 has-md-font-size\" id=\"summary\">Summary<\/h4>\n\n\n\n<p>Data center transformers are subject to variable loads, inverter connection harmonics, and potentially high ambient temperatures, which lead to increased thermal, electrical, and mechanical stresses on transformers.<\/p>\n\n\n\n<p>Data center transformers, which are typically high-voltage, layer-type transformers, demand a reliable, cost-efficient solid insulation solution. DPE paper\u2019s faster dry-out rate, faster impregnation, and enhanced dielectric performance contribute to improved quality and reliability, reduced Factory Acceptance Test (FAT) failure rate, and increased transformer resilience in operation.<\/p>\n\n\n\n<p>In addition, DPE\u2019s higher thermal class and enhanced dielectric performance allow:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Optimized insulation system design<\/li>\n\n\n\n<li>High-temperature-rated designs<\/li>\n\n\n\n<li>Longer life in operation<\/li>\n\n\n\n<li>Higher overload capability<\/li>\n\n\n\n<li>Dual-temperature nameplate designs<\/li>\n\n\n\n<li>Sustainable peak load transformers<\/li>\n<\/ul>\n\n\n\n<p>In conclusion, to ensure adequate, uninterrupted power from data center transformers, the solid insulation should be optimized for resilience and long-lasting performance. Incorporating a special \u201cengineered paper\u201d such as DPE paper from Weidmann as the key solid insulation material offers enhanced properties that provide new opportunities for transformer optimization and reliability.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The global data center transformer market is projected to grow significantly during the next five years, driven by the growing demand for Artificial Intelligence (AI), cloud computing, big data analytics, and internet services. Increasing digitalization across multiple industries, rising use of AI, and general internet use have led to huge data processing and storage needs [&hellip;]<\/p>\n","protected":false},"author":32,"featured_media":6898,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[21,24],"tags":[],"class_list":["post-6882","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry-insight","category-paper"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Optimized Insulation for Data Center Transformers - Weidmann Electrical Technology<\/title>\n<meta name=\"description\" content=\"Discover how advanced insulation for data center transformers enhances reliability, supports higher loads, and extends operational life.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.weidmann-electrical.com\/de\/news\/optimized-insulation-for-data-center-transformers\/\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Optimized Insulation for Data Center Transformers - 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