{"id":3546,"date":"2026-01-09T09:00:00","date_gmt":"2026-01-09T09:00:00","guid":{"rendered":"https:\/\/honcon-electric.com\/?p=3546"},"modified":"2026-01-15T07:04:40","modified_gmt":"2026-01-15T07:04:40","slug":"split-type-vs-common-tank-rmu-selection","status":"publish","type":"post","link":"https:\/\/honcon-electric.com\/es\/split-type-vs-common-tank-rmu-selection\/","title":{"rendered":"Split-type vs Common-tank RMU: How to Choose the Right One"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"3546\" class=\"elementor elementor-3546\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a72842e e-flex e-con-boxed e-con e-parent\" data-id=\"a72842e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-02b87c1 elementor-widget elementor-widget-text-editor\" data-id=\"02b87c1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2 data-start=\"253\" data-end=\"325\">How to Choose the Right <a href=\"https:\/\/honcon-electric.com\/es\/products\/ring-main-unit\/\"><strong data-start=\"681\" data-end=\"700\">Ring Main Unit<\/strong><\/a><\/h2>\n<p data-start=\"327\" data-end=\"614\">Choosing the right ring main unit type is crucial for medium-voltage projects. While <strong data-start=\"405\" data-end=\"424\">split-type ring main units<\/strong> are favored in complex systems, <strong data-start=\"457\" data-end=\"477\">common-tank ring main units<\/strong> are widely used for standard installations. The decision depends on project scale, site conditions, altitude, and long-term maintenance.<\/p>\n<hr data-start=\"616\" data-end=\"619\" \/>\n<h2 data-start=\"621\" data-end=\"679\">Key Differences Between Split-type and Common-tank RMUs<\/h2>\n<p data-start=\"681\" data-end=\"936\"><strong data-start=\"681\" data-end=\"700\">Split-type Ring main units<\/strong> consist of independent panels connected via bus bushings and grounding bars. This modular design allows combinations of multiple units, including metering or protection panels, making them suitable for complex or expandable projects.<\/p>\n<p data-start=\"938\" data-end=\"1113\"><strong data-start=\"938\" data-end=\"958\">Common-tank Ring main units<\/strong> integrate 3\u20136 units into a single gas tank. Internal busbars and grounding are pre-assembled, enabling faster on-site installation and reduced labor cost.<\/p>\n<hr data-start=\"1115\" data-end=\"1118\" \/>\n<h2 data-start=\"1120\" data-end=\"1152\">Advantages of Split-type RMUs<\/h2>\n<ul data-start=\"1154\" data-end=\"1425\">\n<li data-start=\"1154\" data-end=\"1213\">\n<p data-start=\"1156\" data-end=\"1213\">Modular design allows easy addition of functional units<\/p>\n<\/li>\n<li data-start=\"1214\" data-end=\"1285\">\n<p data-start=\"1216\" data-end=\"1285\">Faulty panels can be replaced individually, simplifying maintenance<\/p>\n<\/li>\n<li data-start=\"1286\" data-end=\"1349\">\n<p data-start=\"1288\" data-end=\"1349\">Smaller gas compartments improve stability at high altitude<\/p>\n<\/li>\n<li data-start=\"1350\" data-end=\"1425\">\n<p data-start=\"1352\" data-end=\"1425\">Strong cabinet structure enhances reliability under pressure variations<\/p>\n<\/li>\n<\/ul>\n<hr data-start=\"1427\" data-end=\"1430\" \/>\n<h2 data-start=\"1432\" data-end=\"1479\">Benefits and Limitations of Common-tank RMUs<\/h2>\n<p data-start=\"1481\" data-end=\"1510\"><strong data-start=\"1481\" data-end=\"1501\">Common-tank RMUs<\/strong> offer:<\/p>\n<ul data-start=\"1512\" data-end=\"1648\">\n<li data-start=\"1512\" data-end=\"1563\">\n<p data-start=\"1514\" data-end=\"1563\">Quick installation and minimal on-site assembly<\/p>\n<\/li>\n<li data-start=\"1564\" data-end=\"1592\">\n<p data-start=\"1566\" data-end=\"1592\">Lower initial investment<\/p>\n<\/li>\n<li data-start=\"1593\" data-end=\"1648\">\n<p data-start=\"1595\" data-end=\"1648\">Compact footprint for urban or standard substations<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"1650\" data-end=\"1775\">Limitations include potential gas tank deformation at high altitude, which can stress busbars and reduce contact reliability.<\/p>\n<p data-start=\"1777\" data-end=\"1902\"><strong data-start=\"1777\" data-end=\"1820\">Expandable busbar-type common-tank Ring main units<\/strong> offer a hybrid solution: fast installation with flexibility for future expansion.<\/p>\n<hr data-start=\"1904\" data-end=\"1907\" \/>\n<h2 data-start=\"1909\" data-end=\"1934\">Choosing the Right RMU<\/h2>\n<ul data-start=\"1936\" data-end=\"2231\">\n<li data-start=\"1936\" data-end=\"2034\">\n<p data-start=\"1938\" data-end=\"2034\"><strong data-start=\"1938\" data-end=\"1957\">Split-type Ring main units<\/strong>: best for large-scale projects, high-altitude sites, or frequent expansion<\/p>\n<\/li>\n<li data-start=\"2035\" data-end=\"2128\">\n<p data-start=\"2037\" data-end=\"2128\"><strong data-start=\"2037\" data-end=\"2057\">Common-tank Ring main units<\/strong>: efficient for six or fewer units, fast installation, cost-sensitive<\/p>\n<\/li>\n<li data-start=\"2129\" data-end=\"2231\">\n<p data-start=\"2131\" data-end=\"2231\"><strong data-start=\"2131\" data-end=\"2162\">Expandable common-tank Ring main units<\/strong>: suitable for medium projects balancing flexibility and efficiency<\/p>\n<\/li>\n<\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-af49666 e-flex e-con-boxed e-con e-parent\" data-id=\"af49666\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-235292c elementor-widget elementor-widget-gallery\" data-id=\"235292c\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;columns&quot;:2,&quot;lazyload&quot;:&quot;yes&quot;,&quot;gallery_layout&quot;:&quot;grid&quot;,&quot;columns_tablet&quot;:2,&quot;columns_mobile&quot;:1,&quot;gap&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:10,&quot;sizes&quot;:[]},&quot;gap_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:10,&quot;sizes&quot;:[]},&quot;gap_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:10,&quot;sizes&quot;:[]},&quot;link_to&quot;:&quot;file&quot;,&quot;aspect_ratio&quot;:&quot;3:2&quot;,&quot;overlay_background&quot;:&quot;yes&quot;,&quot;content_hover_animation&quot;:&quot;fade-in&quot;}\" data-widget_type=\"gallery.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-gallery__container\">\n\t\t\t\t\t\t\t<a class=\"e-gallery-item elementor-gallery-item elementor-animated-content\" href=\"https:\/\/honcon-electric.com\/wp-content\/uploads\/2026\/01\/RMU-1.webp\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-slideshow=\"235292c\" data-elementor-lightbox-title=\"Split-type vs Common-tank RMU Comparison-3\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6NDMzMCwidXJsIjoiaHR0cHM6XC9cL2hvbmNvbi1lbGVjdHJpYy5jb21cL3dwLWNvbnRlbnRcL3VwbG9hZHNcLzIwMjZcLzAxXC9STVUtMS53ZWJwIiwic2xpZGVzaG93IjoiMjM1MjkyYyJ9\">\n\t\t\t\t\t<div class=\"e-gallery-image elementor-gallery-item__image\" data-thumbnail=\"https:\/\/honcon-electric.com\/wp-content\/uploads\/2026\/01\/RMU-1-768x576.webp\" data-width=\"768\" data-height=\"576\" aria-label=\"Split-type vs Common-tank RMU Comparison-3\" role=\"img\" ><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-gallery-item__overlay\"><\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t<a class=\"e-gallery-item elementor-gallery-item elementor-animated-content\" href=\"https:\/\/honcon-electric.com\/wp-content\/uploads\/2026\/01\/RMU-2.webp\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-slideshow=\"235292c\" data-elementor-lightbox-title=\"Split-type vs Common-tank RMU Comparison-2\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6NDMzMSwidXJsIjoiaHR0cHM6XC9cL2hvbmNvbi1lbGVjdHJpYy5jb21cL3dwLWNvbnRlbnRcL3VwbG9hZHNcLzIwMjZcLzAxXC9STVUtMi53ZWJwIiwic2xpZGVzaG93IjoiMjM1MjkyYyJ9\">\n\t\t\t\t\t<div class=\"e-gallery-image elementor-gallery-item__image\" data-thumbnail=\"https:\/\/honcon-electric.com\/wp-content\/uploads\/2026\/01\/RMU-2-768x576.webp\" data-width=\"768\" data-height=\"576\" aria-label=\"Split-type vs Common-tank RMU Comparison-2\" role=\"img\" ><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-gallery-item__overlay\"><\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-1edddd9 e-flex e-con-boxed e-con e-parent\" data-id=\"1edddd9\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d40d117 elementor-widget elementor-widget-text-editor\" data-id=\"d40d117\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>To learn more, please check our Youtube Channel: <a href=\"https:\/\/www.youtube.com\/@honconelectric\" target=\"_blank\" rel=\"noopener\">Honcon.\u00a0<\/a><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>How to Choose the Right Ring Main Unit Choosing the right ring main unit type is crucial for medium-voltage projects. While split-type ring main units are favored in complex systems, common-tank ring main units are widely used for standard installations. The decision depends on project scale, site conditions, altitude, and long-term maintenance. Key Differences Between [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4331,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"_joinchat":[],"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3546","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"acf":[],"_links":{"self":[{"href":"https:\/\/honcon-electric.com\/es\/wp-json\/wp\/v2\/posts\/3546","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/honcon-electric.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/honcon-electric.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/honcon-electric.com\/es\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/honcon-electric.com\/es\/wp-json\/wp\/v2\/comments?post=3546"}],"version-history":[{"count":21,"href":"https:\/\/honcon-electric.com\/es\/wp-json\/wp\/v2\/posts\/3546\/revisions"}],"predecessor-version":[{"id":4338,"href":"https:\/\/honcon-electric.com\/es\/wp-json\/wp\/v2\/posts\/3546\/revisions\/4338"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/honcon-electric.com\/es\/wp-json\/wp\/v2\/media\/4331"}],"wp:attachment":[{"href":"https:\/\/honcon-electric.com\/es\/wp-json\/wp\/v2\/media?parent=3546"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/honcon-electric.com\/es\/wp-json\/wp\/v2\/categories?post=3546"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/honcon-electric.com\/es\/wp-json\/wp\/v2\/tags?post=3546"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}