{"id":38786,"date":"2026-10-14T09:31:29","date_gmt":"2026-10-14T09:31:29","guid":{"rendered":"https:\/\/dinghongtransformer.com\/?p=38786"},"modified":"2026-10-16T07:51:37","modified_gmt":"2026-10-16T07:51:37","slug":"how-to-specify-a-data-center-transformer","status":"publish","type":"post","link":"https:\/\/dinghongtransformer.com\/fr\/blog\/how-to-specify-a-data-center-transformer\/","title":{"rendered":"How to Specify a Data Center Transformer: Sizing, Redundancy &amp; RFQ Checklist for Global Projects"},"content":{"rendered":"\n<p class=\"wp-block-wd-paragraph wd-5a4850c3\">A data center transformer does more than reduce medium voltage to a usable distribution voltage. It supports a power system where electrical reliability, efficiency, cooling, protection, and future capacity all affect operating costs and service continuity.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-a16fce7e\">For data center projects in<a href=\"https:\/\/dinghongtransformer.com\/project\/ukraine-distribution-network-recovery-and-industrial-power-reconstruction-project\/\" data-type=\"page\" data-id=\"37359\"> <\/a><strong><a href=\"https:\/\/dinghongtransformer.com\/project\/ukraine-distribution-network-recovery-and-industrial-power-reconstruction-project\/\" data-type=\"page\" data-id=\"37359\">Ukraine<\/a>, <a href=\"https:\/\/dinghongtransformer.com\/blog\/ethiopia-amhara-rural-power-grid-upgrade-project\/\" data-type=\"post\" data-id=\"37370\">Ethiopia<\/a>, Vietnam, <a href=\"https:\/\/dinghongtransformer.com\/blog\/thailand-industrial-park-power-distribution-expansion-project\/\" data-type=\"post\" data-id=\"37374\">Thailand<\/a>, Myanmar, <a href=\"https:\/\/dinghongtransformer.com\/project\/uzbekistan-tashkent-textile-industrial-park-substation-expansion-project\/\" data-type=\"page\" data-id=\"37341\">Uzbekistan<\/a>, Russia, and Nigeria<\/strong>, transformer specifications must also reflect local grid conditions, ambient temperatures, installation environments, and project-specific electrical standards.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-64e46966\">A transformer that performs well in a climate-controlled electrical room in Vietnam may require different environmental provisions from one installed in a cold region of Russia or Uzbekistan.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-15fb877f\">The same applies to facilities operating under unstable grid conditions in parts of Nigeria, Ethiopia, or Myanmar.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-40309ed2\">So, how do you specify the right transformer for a data center?<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-78c63b21\">Start with the actual electrical design\u2014not simply the transformer price or the number of server racks.<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_88 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/dinghongtransformer.com\/fr\/blog\/how-to-specify-a-data-center-transformer\/#1_Calculate_Transformer_Capacity_from_the_Actual_Data_Center_Load\" >1. Calculate Transformer Capacity from the Actual Data Center Load<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/dinghongtransformer.com\/fr\/blog\/how-to-specify-a-data-center-transformer\/#Example_Transformer_Sizing_for_a_1MW_IT_Load\" >Example: Transformer Sizing for a 1MW IT Load<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/dinghongtransformer.com\/fr\/blog\/how-to-specify-a-data-center-transformer\/#2_Choose_Between_Dry-Type_and_Oil-Immersed_Transformers\" >2. Choose Between Dry-Type and Oil-Immersed Transformers<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/dinghongtransformer.com\/fr\/blog\/how-to-specify-a-data-center-transformer\/#3_Specify_Voltage_Frequency_Vector_Group_and_Impedance\" >3. Specify Voltage, Frequency, Vector Group and Impedance<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/dinghongtransformer.com\/fr\/blog\/how-to-specify-a-data-center-transformer\/#Why_Impedance_Matters\" >Why Impedance Matters<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/dinghongtransformer.com\/fr\/blog\/how-to-specify-a-data-center-transformer\/#4_Design_for_Redundancy_Not_Just_Installed_Capacity\" >4. Design for Redundancy, Not Just Installed Capacity<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/dinghongtransformer.com\/fr\/blog\/how-to-specify-a-data-center-transformer\/#5_Check_UPS_Harmonics_Losses_and_Cooling_Requirements\" >5. Check UPS Harmonics, Losses and Cooling Requirements<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/dinghongtransformer.com\/fr\/blog\/how-to-specify-a-data-center-transformer\/#Why_Transformer_Losses_Matter\" >Why Transformer Losses Matter<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/dinghongtransformer.com\/fr\/blog\/how-to-specify-a-data-center-transformer\/#6_Real_Project_Case_DHDL_Harbin_Intelligent_Computing_Center\" >6. Real Project Case: DHDL Harbin Intelligent Computing Center<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/dinghongtransformer.com\/fr\/blog\/how-to-specify-a-data-center-transformer\/#7_Country-Specific_Transformer_Requirements_for_Data_Centers\" >7. Country-Specific Transformer Requirements for Data Centers<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/dinghongtransformer.com\/fr\/blog\/how-to-specify-a-data-center-transformer\/#Southeast_Asia_Vietnam_Thailand_and_Myanmar\" >Southeast Asia: Vietnam, Thailand and Myanmar<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/dinghongtransformer.com\/fr\/blog\/how-to-specify-a-data-center-transformer\/#Africa_Ethiopia_and_Nigeria\" >Africa: Ethiopia and Nigeria<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/dinghongtransformer.com\/fr\/blog\/how-to-specify-a-data-center-transformer\/#Eastern_Europe_and_Central_Asia_Ukraine_Russia_and_Uzbekistan\" >Eastern Europe and Central Asia: Ukraine, Russia and Uzbekistan<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/dinghongtransformer.com\/fr\/blog\/how-to-specify-a-data-center-transformer\/#8_Data_Center_Transformer_RFQ_Checklist\" >8. Data Center Transformer RFQ Checklist<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/dinghongtransformer.com\/fr\/blog\/how-to-specify-a-data-center-transformer\/#Recommended_RFQ_Attachments\" >Recommended RFQ Attachments<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/dinghongtransformer.com\/fr\/blog\/how-to-specify-a-data-center-transformer\/#9_What_Should_Buyers_Compare_Before_Selecting_a_Manufacturer\" >9. What Should Buyers Compare Before Selecting a Manufacturer?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/dinghongtransformer.com\/fr\/blog\/how-to-specify-a-data-center-transformer\/#Data_Center_Transformer_Solutions_from_DHDL\" >Data Center Transformer Solutions from DHDL<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-wd-title title wd-88d69e0f\"><span class=\"ez-toc-section\" id=\"1_Calculate_Transformer_Capacity_from_the_Actual_Data_Center_Load\"><\/span>1. Calculate Transformer Capacity from the Actual Data Center Load<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-d4c5d2a1\">One of the most common procurement mistakes is selecting transformer capacity based only on IT equipment power.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-7edcde19\">A data center also consumes electricity through cooling systems, UPS losses, lighting, auxiliary equipment, and electrical distribution infrastructure.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-3323bb69\">A practical transformer sizing assessment should consider:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>IT equipment load (kW)<\/li>\n\n\n\n<li>Cooling and HVAC load<\/li>\n\n\n\n<li>UPS losses and operating mode<\/li>\n\n\n\n<li>Auxiliary electrical loads<\/li>\n\n\n\n<li>Power factor<\/li>\n\n\n\n<li>Expected demand and diversity<\/li>\n\n\n\n<li>Future capacity expansion<\/li>\n\n\n\n<li>Transformer redundancy arrangement<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-97570c4c\"><span class=\"ez-toc-section\" id=\"Example_Transformer_Sizing_for_a_1MW_IT_Load\"><\/span>Example: Transformer Sizing for a 1MW IT Load<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-6775debd\">Assume a proposed data center has:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>Parameter<\/th><th>Illustrative Value<\/th><\/tr><tr><td>IT Load<\/td><td>1,000kW<\/td><\/tr><tr><td>Design PUE<\/td><td>1.40<\/td><\/tr><tr><td>Total Facility Power<\/td><td>1,400kW<\/td><\/tr><tr><td>Assumed Power Factor<\/td><td>0.95<\/td><\/tr><tr><td>Apparent Power<\/td><td>1,474kVA<\/td><\/tr><tr><td>Illustrative Design Allowance<\/td><td>20%<\/td><\/tr><tr><td>Calculated Capacity<\/td><td>1,768kVA<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-d40cab73\">The simplified calculation is:<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-5b4cf1cb\">\\[ S=\\frac{1{,}000\\times1.40}{0.95}\\times1.20\\approx1{,}768\\text{ kVA} \\]<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-2c727179\">A standard 2,000kVA transformer might therefore be considered for this illustrative load.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-718eaa95\">However, final selection depends on the load allocation, redundancy design, UPS characteristics, cooling demand, transformer temperature rise, and expansion plan. The PUE calculation must also be applied consistently to avoid counting the same auxiliary loads twice.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-74183a8c\">Hidden procurement risk: A 2,000kVA transformer does not automatically mean the facility has 2,000kVA of usable IT capacity.<\/p>\n\n\n\n<div class=\"wp-block-wd-image wd-block-image wd-4b31a2b7\"><img decoding=\"async\" width=\"1536\" height=\"1024\" class=\"wp-image-38790 lazyload\" data-src=\"https:\/\/dinghongtransformer.com\/wp-content\/uploads\/2026\/10\/how-to-specify-a-data-center-transformer.png\" alt=\"\" data-srcset=\"https:\/\/dinghongtransformer.com\/wp-content\/uploads\/2026\/10\/how-to-specify-a-data-center-transformer.png 1536w, https:\/\/dinghongtransformer.com\/wp-content\/uploads\/2026\/10\/how-to-specify-a-data-center-transformer-400x267.png 400w, https:\/\/dinghongtransformer.com\/wp-content\/uploads\/2026\/10\/how-to-specify-a-data-center-transformer-1200x800.png 1200w, https:\/\/dinghongtransformer.com\/wp-content\/uploads\/2026\/10\/how-to-specify-a-data-center-transformer-768x512.png 768w, https:\/\/dinghongtransformer.com\/wp-content\/uploads\/2026\/10\/how-to-specify-a-data-center-transformer-18x12.png 18w, https:\/\/dinghongtransformer.com\/wp-content\/uploads\/2026\/10\/how-to-specify-a-data-center-transformer-430x287.png 430w, https:\/\/dinghongtransformer.com\/wp-content\/uploads\/2026\/10\/how-to-specify-a-data-center-transformer-700x467.png 700w, https:\/\/dinghongtransformer.com\/wp-content\/uploads\/2026\/10\/how-to-specify-a-data-center-transformer-150x100.png 150w\" data-sizes=\"(max-width: 1536px) 100vw, 1536px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1536px; --smush-placeholder-aspect-ratio: 1536\/1024;\" \/><\/div>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-fc56c8c0\"><span class=\"ez-toc-section\" id=\"2_Choose_Between_Dry-Type_and_Oil-Immersed_Transformers\"><\/span>2. Choose Between<a href=\"https:\/\/dinghongtransformer.com\/product-category\/transformers\/dry-type-transformer\/\" data-type=\"product_cat\" data-id=\"76\"> Dry-Type<\/a> and <a href=\"https:\/\/dinghongtransformer.com\/product\/66kv-high-voltage-oil-immersed-power-transformer\/\" data-type=\"product\" data-id=\"37438\">Oil-Immersed Transformers<\/a><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-cecb46aa\">Both dry-type and oil-immersed transformers can be used in data center electrical infrastructure.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-2c679231\">The correct choice depends on the installation location, fire-safety requirements, cooling arrangements, maintenance access, and local regulations.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>Selection Factor<\/th><th>Dry-Type Transformer<\/th><th>Oil-Immersed Transformer<\/th><\/tr><tr><td>Insulation<\/td><td>Solid insulation, commonly cast resin<\/td><td>Insulating liquid<\/td><\/tr><tr><td>Typical Installation<\/td><td>Indoor electrical rooms<\/td><td>Outdoor substations or designated transformer areas<\/td><\/tr><tr><td>Fire Considerations<\/td><td>No insulating oil; still requires fire assessment<\/td><td>Oil containment and fire protection may be required<\/td><\/tr><tr><td>Cooling<\/td><td>Air cooling, natural or forced<\/td><td>Oil and air cooling arrangements<\/td><\/tr><tr><td>Maintenance<\/td><td>Inspection, cleaning, connections, ventilation<\/td><td>Oil condition, sealing, cooling and electrical inspection<\/td><\/tr><tr><td>Common Data Center Role<\/td><td>Building distribution<\/td><td>Utility intake and main distribution<\/td><\/tr><tr><td>Main Procurement Concern<\/td><td>Temperature rise, ventilation, noise<\/td><td>Fire separation, oil containment, cooling and access<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-2ffce816\">For an indoor data center electrical room in Vietnam or Thailand, a cast-resin dry-type transformer may be a suitable option where building requirements and thermal design permit.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-e0b94445\">For a large data center campus in Uzbekistan, Ethiopia, or Nigeria, an outdoor oil-immersed transformer may be considered for the main power intake, with dry-type transformers serving downstream electrical rooms.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-dd58a499\">DHDL supplies both <a href=\"https:\/\/dinghongtransformer.com\/product\/6-37kv-dry-type-distribution-transformer\/\">dry-type distribution transformers<\/a> and <a href=\"https:\/\/dinghongtransformer.com\/product\/6-38-5kv-oil-immersed-distribution-transformer\/\">oil-immersed distribution transformers<\/a> for project-specific applications.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-5de13354\"><span class=\"ez-toc-section\" id=\"3_Specify_Voltage_Frequency_Vector_Group_and_Impedance\"><\/span>3. Specify Voltage, Frequency, Vector Group and Impedance<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-added58b\">A data center transformer RFQ must clearly identify the electrical characteristics of the facility.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-fbf761ca\">Do not request only a \u201c2,500kVA data center transformer.\u201d<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-720ce901\">At minimum, confirm the following parameters.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>Technical Parameter<\/th><th>Example Specification<\/th><\/tr><tr><td>Rated Capacity<\/td><td>2,500kVA<\/td><\/tr><tr><td>Primary Voltage<\/td><td>10kV \/ 11kV \/ Project Specific<\/td><\/tr><tr><td>Secondary Voltage<\/td><td>400V \/ 415V \/ Project Specific<\/td><\/tr><tr><td>Frequency<\/td><td>50Hz<\/td><\/tr><tr><td>Phase<\/td><td>Three-Phase<\/td><\/tr><tr><td>Vector Group<\/td><td>Dyn11, subject to system design<\/td><\/tr><tr><td>Short-Circuit Impedance<\/td><td>Project Specific<\/td><\/tr><tr><td>Tap Range<\/td><td>\u00b12 \u00d7 2.5%, if required<\/td><\/tr><tr><td>Winding Material<\/td><td>Copper \/ Aluminum<\/td><\/tr><tr><td>Cooling<\/td><td>AN \/ AF or ONAN, as applicable<\/td><\/tr><tr><td>Insulation and Temperature Rise<\/td><td>According to design and applicable standards<\/td><\/tr><tr><td>Applicable Standards<\/td><td>IEC \/ Local Utility \/ Project Requirements<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-d984d8e6\">These values are illustrative RFQ fields, not a universal DHDL data center model specification.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-6cc465f0\"><span class=\"ez-toc-section\" id=\"Why_Impedance_Matters\"><\/span>Why Impedance Matters<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-60642ebf\">Transformer impedance affects short-circuit current, voltage regulation, and load sharing when transformers operate in parallel.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-9f0c2036\">For example, a 2,500kVA transformer with a 400V secondary has a rated current of approximately:<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-9630ef15\">\\[ I=\\frac{2{,}500{,}000}{\\sqrt{3}\\times400}\\approx3{,}608\\text{ A} \\]<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-0f5e4f0f\">With an illustrative impedance of 6%, the transformer-limited initial symmetrical short-circuit current at its terminals is approximately 60kA, assuming an ideal upstream source and neglecting additional impedance.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-b96c0681\">That figure is not a substitute for a complete short-circuit study, but it demonstrates why transformer impedance must be coordinated with low-voltage switchgear ratings.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-33ceb916\">For data center projects in Ukraine, Russia, and Uzbekistan, existing utility and substation configurations should be reviewed before confirming voltage ratio, vector group, and impedance.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-6082896b\"><span class=\"ez-toc-section\" id=\"4_Design_for_Redundancy_Not_Just_Installed_Capacity\"><\/span>4. Design for Redundancy, Not Just Installed Capacity<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-35e1d7b5\">A data center may use N, N+1, 2N, or another engineered redundancy arrangement.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-3fd795f7\">The transformer procurement specification must reflect the intended power architecture.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-0911faa7\">For example, installing two 2,500kVA transformers does not automatically create a fully redundant 5,000kVA power system.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-60de796b\">If one transformer is unavailable, the remaining transformer must be capable of carrying the required transferred load\u2014or the system must have an approved load-shedding arrangement.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-6feec3e1\">Buyers should confirm:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Normal operating load per transformer<\/li>\n\n\n\n<li>Maximum permitted loading<\/li>\n\n\n\n<li>Required capacity after one transformer fails<\/li>\n\n\n\n<li>Automatic transfer requirements<\/li>\n\n\n\n<li>Parallel operation requirements<\/li>\n\n\n\n<li>Bus coupler and switchgear arrangement<\/li>\n\n\n\n<li>Protection coordination<\/li>\n\n\n\n<li>Planned maintenance strategy<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-5226104e\">For new data center developments in Thailand, Vietnam, and Nigeria, these decisions should be made during the electrical design stage, not after transformer manufacturing begins.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-6ec1f3df\"><span class=\"ez-toc-section\" id=\"5_Check_UPS_Harmonics_Losses_and_Cooling_Requirements\"><\/span>5. Check UPS Harmonics, Losses and Cooling Requirements<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-511f31b4\">Data center transformers often supply electrical systems containing UPS rectifiers, variable-frequency drives, and other nonlinear loads.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-994bf6ee\">These loads can produce harmonic currents, increasing transformer losses and temperature rise.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-170c9b35\">Before ordering, request information about:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>UPS topology and input harmonic characteristics<\/li>\n\n\n\n<li>Total harmonic current distortion (THDi) at the relevant operating point<\/li>\n\n\n\n<li>Expected transformer loading<\/li>\n\n\n\n<li>Neutral conductor requirements<\/li>\n\n\n\n<li>Harmonic filtering arrangements<\/li>\n\n\n\n<li>Transformer winding temperature rise<\/li>\n\n\n\n<li>Cooling and ventilation conditions<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-f904ea7c\">A low-harmonic UPS design may not require the same transformer provisions as a system with significant harmonic distortion.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-702adb5c\">Hidden procurement risk: Do not automatically specify a K-rated transformer or an oversized transformer without evaluating the actual harmonic spectrum and applicable design standard.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-04f90deb\"><span class=\"ez-toc-section\" id=\"Why_Transformer_Losses_Matter\"><\/span>Why Transformer Losses Matter<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-b63b0f63\">Data center transformers can remain energized continuously, even when IT load is relatively low.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-5338563e\">The procurement team should compare guaranteed no-load and load losses, not just initial purchase price.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-0b869a5e\">For an illustrative transformer with 3kW of no-load loss:<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-aa661610\">\\[ 3 \\times 8{,}760 = 26{,}280\\text{ kWh\/year} \\]<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-d3db1afe\">At an illustrative electricity price of $0.10\/kWh, this represents approximately $2,628 annually in no-load energy cost alone.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-c1697996\">Actual annual costs also depend on loading, load losses, electricity tariffs, and operating hours.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-631272be\">For continuously operated data centers in Vietnam, Thailand, Nigeria, and Ethiopia, lifecycle loss evaluation can reveal cost differences that are not obvious in the original quotation.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-102f0cae\"><span class=\"ez-toc-section\" id=\"6_Real_Project_Case_DHDL_Harbin_Intelligent_Computing_Center\"><\/span>6. Real Project Case: <a href=\"https:\/\/dinghongtransformer.com\/project\/harbin-intelligent-computing-center-phase-i-power-distribution-system-project\/\" data-type=\"page\" data-id=\"37334\">DHDL Harbin Intelligent Computing Center<\/a><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-a670d71a\">A relevant example comes from DHDL&#8217;s Harbin Intelligent Computing Center Phase I power distribution project in China.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-2d6bf1b2\">The published project involved an expansion supporting approximately 18MW of additional IT load and around 1,800 server cabinets.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-ad3af248\">Published DHDL project information.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>Project Parameter<\/th><th>Published Information<\/th><\/tr><tr><td>Location<\/td><td>Harbin, China<\/td><\/tr><tr><td>Application<\/td><td>AI Computing \/ Data Center<\/td><\/tr><tr><td>Additional IT Load<\/td><td>Approx. 18MW<\/td><\/tr><tr><td>Additional Server Cabinets<\/td><td>Approx. 1,800<\/td><\/tr><tr><td>Power Architecture<\/td><td>Dual Supply + Double Busbar<\/td><\/tr><tr><td>Redundancy<\/td><td>N+1<\/td><\/tr><tr><td>Main Transformers<\/td><td>2 \u00d7 31.5MVA, 110\/10.5kV<\/td><\/tr><tr><td>Distribution Transformers<\/td><td>26 \u00d7 2,500kVA dry-type<\/td><\/tr><tr><td>Medium-Voltage Switchgear<\/td><td>32 KYN28A-12 Panels<\/td><\/tr><tr><td>Low-Voltage Switchgear<\/td><td>156 MNS Panels<\/td><\/tr><tr><td>Delivery<\/td><td>Within 58 Days<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-827ca956\">The project required coordinated transformers, switchgear, UPS infrastructure, backup generation, and protection systems.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-1861e24f\">Harbin&#8217;s winter temperatures can approach \u221230\u00b0C, making low-temperature design and anti-condensation measures important for the project.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-ecf3bfcb\">DHDL reports that the equipment arrived within 58 days, eight days ahead of the planned schedule.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-56ed7ae1\">This project demonstrates three important purchasing lessons.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-856d69b6\">First, a data center transformer should be specified as part of the complete electrical distribution architecture.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-d8eff4ca\">Second, redundancy depends on transformer capacity, switching arrangements, and the loads that must remain energized during an outage.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-7d7a5b76\">Third, environmental conditions and delivery schedules must be confirmed before production.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-ca0226d5\">For data center developments in Russia, Ukraine, and Uzbekistan, the cold-weather engineering considerations illustrated by this project are particularly relevant, although the actual temperature design must be based on the destination site.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-1e3fb813\">Source note: DHDL&#8217;s published project pages contain differing distribution-transformer counts. This article uses the dedicated project page&#8217;s 26-unit figure; confirm the final project equipment schedule before using that quantity in promotional claims.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-7cb07724\"><span class=\"ez-toc-section\" id=\"7_Country-Specific_Transformer_Requirements_for_Data_Centers\"><\/span>7. Country-Specific Transformer Requirements for Data Centers<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-e1f2c57a\">Transformer specifications should reflect the actual project location.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-a1a7e3cb\">The following table provides engineering considerations for DHDL&#8217;s eight target markets. These are planning considerations, not verified countrywide grid specifications. Utility voltage, frequency, local codes, and approval requirements must be confirmed for each project.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>Target Market<\/th><th>Key Considerations for Data Center Procurement<\/th><\/tr><tr><td>Ukraine<\/td><td>Existing grid connections, backup power, cold-weather performance, protection coordination<\/td><\/tr><tr><td>Ethiopia<\/td><td>Utility voltage, ambient temperature, altitude, grid reliability and backup strategy<\/td><\/tr><tr><td>Vietnam<\/td><td>High humidity, cooling ventilation, electrical-room conditions, utility compatibility<\/td><\/tr><tr><td>Thailand<\/td><td>High ambient temperatures, humidity, transformer cooling and outdoor installation<\/td><\/tr><tr><td>Myanmar<\/td><td>Grid reliability, backup generation, voltage variation and protection coordination<\/td><\/tr><tr><td>Uzbekistan<\/td><td>Temperature extremes, dust, substation integration and insulation requirements<\/td><\/tr><tr><td>Russia<\/td><td>Low-temperature design, local standards, documentation and winter operating conditions<\/td><\/tr><tr><td>Nigeria<\/td><td>Grid voltage quality, backup power, heat, dust and site maintenance requirements<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-c92c52ff\"><span class=\"ez-toc-section\" id=\"Southeast_Asia_Vietnam_Thailand_and_Myanmar\"><\/span>Southeast Asia: Vietnam, <a href=\"https:\/\/dinghongtransformer.com\/blog\/thailand-industrial-park-power-distribution-expansion-project\/\" data-type=\"post\" data-id=\"37374\">Thailand<\/a> and Myanmar<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-2310b311\">For data centers in Vietnam, Thailand, and Myanmar, buyers should carefully review temperature, humidity, ventilation, and moisture protection.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-bd4a52e1\">Indoor dry-type transformers require adequate airflow and heat removal. Outdoor installations require an enclosure and protection system appropriate to the site.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-beedab25\">Where backup generators are used, transformer energization, transfer sequences, and protection coordination should be included in the design review.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-d3a3738a\"><span class=\"ez-toc-section\" id=\"Africa_Ethiopia_and_Nigeria\"><\/span>Africa: Ethiopia and Nigeria<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-b1b5fb80\">For Ethiopia and Nigeria, procurement teams should focus on actual utility connection conditions, required backup capacity, site temperature, and maintainability.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-773a680a\">High-altitude locations in Ethiopia may require a review of insulation coordination and cooling performance.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-c11f84dd\">For Nigerian facilities using generators and UPS systems, the electrical design should consider source transfer, voltage quality, fault levels, and critical-load continuity.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-55565333\"><span class=\"ez-toc-section\" id=\"Eastern_Europe_and_Central_Asia_Ukraine_Russia_and_Uzbekistan\"><\/span>Eastern Europe and Central Asia: Ukraine, Russia and Uzbekistan<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-5f1fbad7\">For projects in Ukraine, Russia, and Uzbekistan, the transformer specification may need additional consideration of low-temperature operation, condensation, storage conditions, and utility-interface requirements.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-4a1cea8d\">Outdoor oil-immersed transformers may require appropriate oil, sealing, and accessory specifications for the minimum site temperature.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-7593d6ed\">For indoor dry-type transformers, the building&#8217;s actual heating, ventilation, and humidity-control conditions remain important.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-9127721c\">Buyers should also confirm applicable local technical regulations, certification requirements, and trade or import restrictions before procurement.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-48f0db15\"><span class=\"ez-toc-section\" id=\"8_Data_Center_Transformer_RFQ_Checklist\"><\/span>8. Data Center Transformer RFQ Checklist<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-7a70fd36\">Before requesting a quotation, send the transformer manufacturer a complete technical specification.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>RFQ Item<\/th><th>Buyer Input<\/th><\/tr><tr><td>Destination Country<\/td><td>Ukraine \/ Ethiopia \/ Vietnam \/ Thailand \/ Myanmar \/ Uzbekistan \/ Russia \/ Nigeria<\/td><\/tr><tr><td>Application<\/td><td>Data Center \/ AI Computing Center<\/td><\/tr><tr><td>IT Load<\/td><td>_____ MW<\/td><\/tr><tr><td>Total Facility Load<\/td><td>_____ kW<\/td><\/tr><tr><td>Transformer Capacity<\/td><td>_____ kVA \/ MVA<\/td><\/tr><tr><td>Quantity<\/td><td>_____ Units<\/td><\/tr><tr><td>Primary Voltage<\/td><td>_____ kV<\/td><\/tr><tr><td>Secondary Voltage<\/td><td>_____ V \/ kV<\/td><\/tr><tr><td>Frequency<\/td><td>_____ Hz<\/td><\/tr><tr><td>Vector Group<\/td><td>_____<\/td><\/tr><tr><td>Short-Circuit Impedance<\/td><td>_____ %<\/td><\/tr><tr><td>Tap Range<\/td><td>_____<\/td><\/tr><tr><td>Transformer Type<\/td><td>Dry-Type \/ Oil-Immersed<\/td><\/tr><tr><td>Cooling Method<\/td><td>AN \/ AF \/ ONAN \/ Other<\/td><\/tr><tr><td>Winding Material<\/td><td>Copper \/ Aluminum<\/td><\/tr><tr><td>No-Load \/ Load Losses<\/td><td>Guaranteed Values<\/td><\/tr><tr><td>UPS Harmonic Requirements<\/td><td>THDi \/ Harmonic Spectrum<\/td><\/tr><tr><td>Redundancy<\/td><td>N \/ N+1 \/ 2N \/ Other<\/td><\/tr><tr><td>Maximum Ambient Temperature<\/td><td>_____ \u00b0C<\/td><\/tr><tr><td>Minimum Ambient Temperature<\/td><td>_____ \u00b0C<\/td><\/tr><tr><td>Altitude<\/td><td>_____ m<\/td><\/tr><tr><td>Applicable Standards<\/td><td>IEC \/ Local \/ Project-Specific<\/td><\/tr><tr><td>Factory Testing<\/td><td>Routine Tests \/ Additional FAT<\/td><\/tr><tr><td>Delivery Destination<\/td><td>_____<\/td><\/tr><tr><td>Required Site Delivery Date<\/td><td>_____<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-dfe7d04f\"><span class=\"ez-toc-section\" id=\"Recommended_RFQ_Attachments\"><\/span>Recommended RFQ Attachments<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Single-Line Diagram (SLD)<\/li>\n\n\n\n<li>Data center electrical load schedule<\/li>\n\n\n\n<li>IT and cooling load calculations<\/li>\n\n\n\n<li>UPS technical specifications<\/li>\n\n\n\n<li>Generator and automatic transfer scheme<\/li>\n\n\n\n<li>Short-circuit study<\/li>\n\n\n\n<li>Protection coordination study<\/li>\n\n\n\n<li>Transformer loss requirements<\/li>\n\n\n\n<li>Electrical-room ventilation design<\/li>\n\n\n\n<li>Site environmental conditions<\/li>\n\n\n\n<li>Required test reports and certifications<\/li>\n\n\n\n<li>Project construction schedule<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-bb30ba97\">For projects in Vietnam, Thailand, Ethiopia, Nigeria, Ukraine, Myanmar, Uzbekistan, and Russia, include the exact destination city and installation conditions rather than relying on general national climate assumptions.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-44dcb0c7\">DHDL&#8217;s inquiry guidance recommends providing transformer capacity, voltage, vector group, impedance, standards, installation environment, and project documents for technical review.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-22bbcdb4\"><span class=\"ez-toc-section\" id=\"9_What_Should_Buyers_Compare_Before_Selecting_a_Manufacturer\"><\/span>9. What Should Buyers Compare Before Selecting a Manufacturer?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-57ee6372\">A low transformer quotation does not necessarily mean the lowest project cost.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-5370192d\">For data center procurement, compare suppliers using the following criteria:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>Evaluation Item<\/th><th>What to Verify<\/th><\/tr><tr><td>Technical Compatibility<\/td><td>Voltage, capacity, vector group and impedance<\/td><\/tr><tr><td>Energy Efficiency<\/td><td>Guaranteed no-load and load losses<\/td><\/tr><tr><td>Thermal Performance<\/td><td>Temperature rise and cooling design<\/td><\/tr><tr><td>Reliability<\/td><td>Insulation design and factory testing<\/td><\/tr><tr><td>Redundancy<\/td><td>Compatibility with the electrical architecture<\/td><\/tr><tr><td>Documentation<\/td><td>Drawings, reports, manuals and certificates<\/td><\/tr><tr><td>Customization<\/td><td>Environmental and local standard requirements<\/td><\/tr><tr><td>Delivery<\/td><td>Production milestones and shipping schedule<\/td><\/tr><tr><td>Support<\/td><td>Installation and commissioning coordination<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-9b82033c\">One commonly overlooked cost is the need to redesign low-voltage switchgear after changing transformer impedance or capacity.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-28020f9c\">Another is insufficient electrical-room ventilation, which may require costly site modifications.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-9aacd15b\">Confirming these requirements before placing the order can reduce technical changes, delivery delays, and installation costs.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-20c71300\"><span class=\"ez-toc-section\" id=\"Data_Center_Transformer_Solutions_from_DHDL\"><\/span>Data Center Transformer Solutions from DHDL<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-d753001e\">DHDL supplies dry-type transformers, oil-immersed transformers, power transformers, low-voltage distribution cabinets, medium-voltage switchgear, and prefabricated substations for industrial and critical-power applications.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-38fbf0fe\">Its published Harbin computing-center project demonstrates experience supplying transformers and distribution equipment for a data center with dual power supplies and redundant electrical infrastructure.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-d8a5d62b\">For data center projects in Ukraine, Ethiopia, Vietnam, Thailand, Myanmar, Uzbekistan, Russia, and Nigeria, DHDL can review project-specific requirements for transformer capacity, voltage, cooling, winding material, environmental conditions, and applicable standards.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-09fa84ca\">To request a technical proposal, provide:<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-34417990\">IT Load + Total Facility Load + HV\/LV Voltage + Redundancy Design + UPS Requirements + Site Conditions + Destination Country + Quantity<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-99f6c816\">A complete transformer specification helps buyers compare technically equivalent offers and reduces the risk of costly design changes.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-f4d09142\">DHDL \u2014 Customized Transformer and Power Distribution Solutions for Global Data Center Projects.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-de56357c\">Website: <a href=\"https:\/\/dinghongtransformer.com\/\">https:\/\/dinghongtransformer.com\/<\/a><\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-2a4bc172\">Email: service@dinghongtransformer.com<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Learn how to specify a data center transformer, including kVA sizing, N+1 redundancy, UPS harmonics, cooling and RFQ requirements for global projects.<\/p>","protected":false},"author":1,"featured_media":38787,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1,100,99],"tags":[],"class_list":["post-38786","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-data-center","category-substation-projects"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>How to Specify a Data Center Transformer: Sizing, Redundancy &amp; 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