{"id":38955,"date":"2026-11-04T02:47:07","date_gmt":"2026-11-04T02:47:07","guid":{"rendered":"https:\/\/dinghongtransformer.com\/?p=38955"},"modified":"2026-11-04T02:47:10","modified_gmt":"2026-11-04T02:47:10","slug":"switchgear-rfq-checklist","status":"publish","type":"post","link":"https:\/\/dinghongtransformer.com\/es\/blog\/charging-energy-storage\/switchgear-rfq-checklist\/","title":{"rendered":"Switchgear RFQ Checklist: Specifications, Drawings and Documents Buyers Should Provide"},"content":{"rendered":"<p class=\"wp-block-wd-paragraph wd-3c89e47f\">Requesting a switchgear quotation without complete technical information often leads to incorrect pricing, design revisions, and project delays.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-7de4b40b\">For EPC contractors, utilities, and industrial buyers in Ethiopia, Vietnam, Thailand, Nigeria, Uzbekistan, Ukraine, Myanmar, and Russia, an accurate RFQ should include electrical ratings, protection requirements, installation conditions, and approved drawings.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-a8acab8f\">This guide explains what to provide before contacting a medium-voltage or <a href=\"https:\/\/dinghongtransformer.com\/es\/producto\/mns-low-voltage-withdrawable-switchgear-for-power-distribution\/\" data-type=\"product\" data-id=\"37466\"><strong><em>low-voltage switchgear<\/em><\/strong><\/a> manufacturer.<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_89 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\">\u00cdndice de contenidos<\/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=\"Alternar tabla de contenidos\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Alternar<\/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\/es\/blog\/charging-energy-storage\/switchgear-rfq-checklist\/#1_Confirm_the_Switchgear_Type_and_Application\" >1. Confirm the Switchgear Type and Application<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/dinghongtransformer.com\/es\/blog\/charging-energy-storage\/switchgear-rfq-checklist\/#2_Twelve_Essential_Switchgear_RFQ_Specifications\" >2. Twelve Essential Switchgear RFQ Specifications<\/a><\/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\/es\/blog\/charging-energy-storage\/switchgear-rfq-checklist\/#3_Drawings_Buyers_Must_Submit\" >3. Drawings Buyers Must Submit<\/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\/es\/blog\/charging-energy-storage\/switchgear-rfq-checklist\/#4_Real_Project_Reference_DHDL_Thailand_Industrial_Park\" >4. Real Project Reference: DHDL Thailand Industrial Park<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/dinghongtransformer.com\/es\/blog\/charging-energy-storage\/switchgear-rfq-checklist\/#5_Hidden_Costs_That_Affect_Switchgear_Quotations\" >5. Hidden Costs That Affect Switchgear Quotations<\/a><\/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\/es\/blog\/charging-energy-storage\/switchgear-rfq-checklist\/#6_Switchgear_RFQ_Checklist_Copy_and_Send\" >6. Switchgear RFQ Checklist: Copy and Send<\/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\/es\/blog\/charging-energy-storage\/switchgear-rfq-checklist\/#7_Request_a_Switchgear_Quotation_from_DHDL\" >7. Request a Switchgear Quotation from DHDL<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/dinghongtransformer.com\/es\/blog\/charging-energy-storage\/switchgear-rfq-checklist\/#FAQ\" >Preguntas frecuentes<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-wd-title title wd-808dfeb6\"><span class=\"ez-toc-section\" id=\"1_Confirm_the_Switchgear_Type_and_Application\"><\/span>1. Confirm the Switchgear Type and Application<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-29c98a8e\">Start by identifying the equipment required:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Medium-voltage metal-enclosed switchgear<\/li>\n\n\n\n<li>Low-voltage distribution switchgear<\/li>\n\n\n\n<li>Ring Main Unit (RMU)<\/li>\n\n\n\n<li><strong><em><a href=\"https:\/\/dinghongtransformer.com\/es\/producto\/sf6-gas-insulated-switchgear\/\" data-type=\"product\" data-id=\"37480\">Gas-insulated switchgear<\/a> (GIS)<\/em><\/strong><\/li>\n\n\n\n<li>Motor control or industrial distribution panels<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-bf579123\">Specify whether the equipment serves a utility substation, transformer feeder, industrial plant, renewable energy project, or commercial distribution system.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-cde18aed\">Different applications require different protection, switching, and testing arrangements.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-16861f2a\"><span class=\"ez-toc-section\" id=\"2_Twelve_Essential_Switchgear_RFQ_Specifications\"><\/span>2. Twelve Essential Switchgear <a href=\"https:\/\/dinghongtransformer.com\/es\/blog\/product-insights\/transformer-rfq-checklist\/\" data-type=\"post\" data-id=\"38222\"><em>RFQ Specifications<\/em><\/a><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>Specification<\/th><th>Example \/ Buyer Input<\/th><\/tr><tr><td>1. Rated Voltage<\/td><td>12 \/ 24 \/ 36 \/ 40.5kV<\/td><\/tr><tr><td>2. System Frequency<\/td><td>50 \/ 60Hz<\/td><\/tr><tr><td>3. Rated Current<\/td><td>630 \/ 1250 \/ 2000A<\/td><\/tr><tr><td>4. Short-Circuit Breaking Current<\/td><td>20 \/ 25 \/ 31.5kA<\/td><\/tr><tr><td>5. Short-Time Withstand<\/td><td>_____ kA \/ _____ s<\/td><\/tr><tr><td>6. Insulation Level<\/td><td>Power-frequency \/ impulse withstand<\/td><\/tr><tr><td>7. Switchgear Type<\/td><td>AIS \/ GIS \/ RMU<\/td><\/tr><tr><td>8. Circuit Breaker<\/td><td>Vacuum \/ Other<\/td><\/tr><tr><td>9. Protection Relay<\/td><td>Functions and approved model<\/td><\/tr><tr><td>10. CT \/ VT<\/td><td>Ratios, accuracy and burden<\/td><\/tr><tr><td>11. Enclosure \/ Internal Arc<\/td><td>IP rating, IAC classification<\/td><\/tr><tr><td>12. Quantity \/ Layout<\/td><td>Number of panels and arrangement<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-ac569c67\">These are illustrative values, not a universal product specification.<\/p>\n\n\n\n<div class=\"wp-block-wd-image wd-block-image wd-9d78a6c8\"><img decoding=\"async\" width=\"1671\" height=\"941\" class=\"wp-image-38957 lazyload\" data-src=\"https:\/\/dinghongtransformer.com\/wp-content\/uploads\/2026\/11\/switchgear-quotation-requirements.png\" alt=\"\" data-srcset=\"https:\/\/dinghongtransformer.com\/wp-content\/uploads\/2026\/11\/switchgear-quotation-requirements.png 1671w, https:\/\/dinghongtransformer.com\/wp-content\/uploads\/2026\/11\/switchgear-quotation-requirements-400x225.png 400w, https:\/\/dinghongtransformer.com\/wp-content\/uploads\/2026\/11\/switchgear-quotation-requirements-1300x732.png 1300w, https:\/\/dinghongtransformer.com\/wp-content\/uploads\/2026\/11\/switchgear-quotation-requirements-768x432.png 768w, https:\/\/dinghongtransformer.com\/wp-content\/uploads\/2026\/11\/switchgear-quotation-requirements-1536x865.png 1536w, https:\/\/dinghongtransformer.com\/wp-content\/uploads\/2026\/11\/switchgear-quotation-requirements-18x10.png 18w, https:\/\/dinghongtransformer.com\/wp-content\/uploads\/2026\/11\/switchgear-quotation-requirements-430x242.png 430w, https:\/\/dinghongtransformer.com\/wp-content\/uploads\/2026\/11\/switchgear-quotation-requirements-700x394.png 700w, https:\/\/dinghongtransformer.com\/wp-content\/uploads\/2026\/11\/switchgear-quotation-requirements-150x84.png 150w\" data-sizes=\"(max-width: 1671px) 100vw, 1671px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1671px; --smush-placeholder-aspect-ratio: 1671\/941;\" \/><\/div>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-c99c4fc3\">For projects in Vietnam and <a href=\"https:\/\/dinghongtransformer.com\/es\/blog\/thailand-industrial-park-power-distribution-expansion-project\/\" data-type=\"post\" data-id=\"37374\"><em><strong>Tailandia<\/strong><\/em><\/a>, confirm the utility&#8217;s actual voltage and protection requirements.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-ed75c266\">For Ethiopia and Nigeria, provide site altitude, temperature, dust exposure, and operating conditions.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-c97f4573\">For Ukraine, Russia, and Uzbekistan, low-temperature operation may require additional design review.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-72828a20\"><span class=\"ez-toc-section\" id=\"3_Drawings_Buyers_Must_Submit\"><\/span>3. Drawings Buyers Must Submit<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-9a0d5425\">Technical drawings help manufacturers identify configuration errors before production.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>Drawing<\/th><th>Why It Matters<\/th><\/tr><tr><td>Single-Line Diagram (SLD)<\/td><td>Defines feeders, busbars and protection<\/td><\/tr><tr><td>Switchgear Layout<\/td><td>Confirms panel quantity and arrangement<\/td><\/tr><tr><td>Electrical Room Layout<\/td><td>Verifies access and maintenance space<\/td><\/tr><tr><td>Cable Schedule<\/td><td>Defines cable size and termination<\/td><\/tr><tr><td>Protection Diagram<\/td><td>Establishes relay and trip requirements<\/td><\/tr><tr><td>Control Schematic<\/td><td>Defines interlocks and auxiliary circuits<\/td><\/tr><tr><td>Transformer Datasheet<\/td><td>Confirms upstream\/downstream compatibility<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-6bcca766\">Hidden risk: A switchgear lineup may meet the electrical ratings but still require expensive site modifications because of incorrect cable-entry positions or panel dimensions.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-51843055\"><span class=\"ez-toc-section\" id=\"4_Real_Project_Reference_DHDL_Thailand_Industrial_Park\"><\/span>4. Real Project Reference: <a href=\"https:\/\/dinghongtransformer.com\/es\/project\/thailand-industrial-park-power-distribution-expansion-project\/\" data-type=\"page\" data-id=\"37307\"><em>DHDL Thailand Industrial Park<\/em><\/a><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-6e528db9\">DHDL&#8217;s published Thailand industrial park expansion project involved an 8,000kVA, 33\/0.416kV oil-immersed transformer for an existing industrial distribution network.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-1e296f3c\">The project illustrates the importance of confirming voltage interfaces, installation conditions, and equipment coordination before delivery.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-d88bfad1\">However, it is a documented transformer supply project, not verified evidence of a switchgear delivery.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-7ffcc334\">For a comparable 33kV industrial installation, switchgear buyers should additionally confirm the approved SLD, fault level, feeder arrangement, CT\/VT specifications, and protection coordination.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-044c2e81\"><span class=\"ez-toc-section\" id=\"5_Hidden_Costs_That_Affect_Switchgear_Quotations\"><\/span>5. Hidden Costs That Affect Switchgear Quotations<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-6de3e38f\">Two suppliers may quote the same rated voltage but offer different technical scopes.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-bfcf38e8\">Check whether pricing includes:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Protection relays and communication modules<\/li>\n\n\n\n<li>CTs, VTs, meters and auxiliary power<\/li>\n\n\n\n<li>Internal arc classification and required evidence<\/li>\n\n\n\n<li>Busbar arrangements and cable termination accessories<\/li>\n\n\n\n<li><a href=\"https:\/\/dinghongtransformer.com\/es\/blog\/case-studies\/transformer-fat-vs-sat-testing-checklist\/\" data-type=\"post\" data-id=\"38910\"><strong><em>Factory Acceptance Testing (FAT)<\/em><\/strong><\/a><\/li>\n\n\n\n<li>Spare parts, export packaging and commissioning support<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-dee6ab29\">For projects in Myanmar, Nigeria, and Ethiopia, transport, storage, installation access, and maintenance resources should also be evaluated.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-35f5b47c\">Buyer tip: Request an itemized quotation with a deviation list rather than comparing equipment prices alone.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-e7646964\"><span class=\"ez-toc-section\" id=\"6_Switchgear_RFQ_Checklist_Copy_and_Send\"><\/span>6. Switchgear <a href=\"https:\/\/dinghongtransformer.com\/es\/blog\/transformer-rfq-checklist-specifications-buyers-must-provide-for-an-accurate-quote\/\" data-type=\"post\" data-id=\"38577\"><em>RFQ Checklist<\/em><\/a>: Copy and Send<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-e93a12ce\">Before requesting a quotation, complete the following information.<\/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>Project \/ Destination<\/td><td>_____<\/td><\/tr><tr><td>Switchgear Type<\/td><td>AIS \/ GIS \/ RMU \/ LV<\/td><\/tr><tr><td>Rated Voltage \/ Frequency<\/td><td>_____ kV \/ _____ Hz<\/td><\/tr><tr><td>Rated Current<\/td><td>_____ A<\/td><\/tr><tr><td>Short-Circuit Rating \/ Duration<\/td><td>_____ kA \/ _____ s<\/td><\/tr><tr><td>Circuit Breaker Type<\/td><td>_____<\/td><\/tr><tr><td>Protection Relay \/ CT \/ VT<\/td><td>_____<\/td><\/tr><tr><td>Number of Panels<\/td><td>_____<\/td><\/tr><tr><td>Installation \/ IP Rating<\/td><td>_____<\/td><\/tr><tr><td>Applicable Standards<\/td><td>IEC 62271 \/ IEC 61439 \/ Local<\/td><\/tr><tr><td>Required FAT \/ Certificates<\/td><td>_____<\/td><\/tr><tr><td>Delivery \/ Quantity<\/td><td>_____<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-aa8ccc1a\">Attach: SLD, technical datasheet, panel layout, cable schedule, protection settings or philosophy, site photographs, and required document list.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-341b14c5\"><span class=\"ez-toc-section\" id=\"7_Request_a_Switchgear_Quotation_from_DHDL\"><\/span>7. Request a Switchgear Quotation from DHDL<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-3fb152eb\">DHDL provides <a href=\"https:\/\/dinghongtransformer.com\/wp-content\/uploads\/2026\/08\/image-24.png\" data-type=\"attachment\" data-id=\"37966\"><em><strong>KYN28 metal-clad switchgea<\/strong><\/em>r<\/a>, gas-insulated switchgear, transformers, and related power distribution equipment. Its published<a href=\"https:\/\/dinghongtransformer.com\/es\/blog\/kyn28-metal-clad-withdrawable-switchgear-buyers-guide\/\" data-type=\"post\" data-id=\"37965\"> <em><strong>KYN28 range <\/strong><\/em><\/a>covers 3.6\u201312kV systems, with project-specific configurations available. <\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-47031bab\">For projects in Ukraine, Ethiopia, Vietnam, Thailand, Myanmar, Uzbekistan, Russia, and Nigeria, submit your electrical specifications, drawings, destination, and delivery schedule for technical review.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-719e4226\">Send your RFQ: <a href=\"https:\/\/dinghongtransformer.com\/es\/contactenos\/?utm_source=chatgpt.com\"><strong><em>Contact DHDL<\/em><\/strong><\/a><\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-dc62af8a\"><span class=\"ez-toc-section\" id=\"FAQ\"><\/span>Preguntas frecuentes<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-ead0e652\">1. What information is required for a switchgear quotation?<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-ae7f7ba4\">Provide voltage, current, short-circuit rating, SLD, panel quantity, protection requirements, standards, and installation conditions.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-0f953e94\">2. Is an SLD necessary for switchgear procurement?<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-54866e00\">It is strongly recommended because it identifies the electrical connections, feeders, busbars, and protection arrangement.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-69e5f7ef\">3. What standards apply to switchgear?<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-628fae70\">IEC 62271 is relevant to high-voltage switchgear, while IEC 61439 applies to low-voltage switchgear assemblies. Confirm the applicable parts and local requirements.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-e7a19104\">4. Can DHDL customize switchgear?<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-4b2eb957\">DHDL publishes project-specific customization options for KYN28 and GIS switchgear, including circuit configuration, protection, layout, and electrical ratings. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>","protected":false},"excerpt":{"rendered":"<p>Prepare an accurate switchgear RFQ with 12 essential specifications, SLD requirements, protection details, drawings and a practical buyer checklist.<\/p>","protected":false},"author":1,"featured_media":38956,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[102,73,97],"tags":[],"class_list":["post-38955","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-charging-energy-storage","category-industry-standards","category-renewable-energy-projects"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - 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