{"id":31597,"date":"2026-10-10T13:18:53","date_gmt":"2026-10-10T05:18:53","guid":{"rendered":"https:\/\/www.cnspd.com\/?p=31597"},"modified":"2026-10-10T13:28:29","modified_gmt":"2026-10-10T05:28:29","slug":"automatic-transfer-switch-for-bess-and-energy-storage-systems","status":"publish","type":"post","link":"https:\/\/www.cnspd.com\/id\/bess-automatic-transfer-switch\/","title":{"rendered":"Automatic Transfer Switch for BESS and Energy Storage Systems"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"31597\" class=\"elementor elementor-31597\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f7ffc38 e-flex e-con-boxed e-con e-parent\" data-id=\"f7ffc38\" 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-1f6c70d elementor-widget elementor-widget-html\" data-id=\"1f6c70d\" data-element_type=\"widget\" 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class=\"ly-kicker\">BESS \u00b7 Low-Voltage AC-Side Transfer<\/div>\r\n\r\n  <p class=\"ly-intro\">\r\n    A battery energy storage system may require automatic source transfer, but the ATS must be used at the correct point in the system.\r\n    LEEYEE compact automatic transfer switches are intended for suitable <strong>low-voltage AC-side transfer applications<\/strong>,\r\n    not for direct switching of a high-voltage battery DC bus.\r\n  <\/p>\r\n\r\n  <section class=\"ly-quick-answer\">\r\n    <div id=\"ez-toc-container\" class=\"ez-toc-v2_0_87 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Daftar Isi<\/p>\n<span class=\"ez-toc-title-toggle\"><\/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=\"#\" data-href=\"https:\/\/www.cnspd.com\/id\/bess-automatic-transfer-switch\/#quick-answer\" >Jawaban Cepat<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/id\/bess-automatic-transfer-switch\/#where-can-this-compact-ats-fit-in-a-bess-project\" >Where Can This Compact ATS Fit in a BESS Project?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/id\/bess-automatic-transfer-switch\/#why-the-ats-belongs-on-the-ac-side\" >Why the ATS Belongs on the AC Side<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/id\/bess-automatic-transfer-switch\/#what-type-of-bess-load-is-a-better-match-for-this-product\" >What Type of BESS Load Is a Better Match for This Product?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/id\/bess-automatic-transfer-switch\/#2p-or-4p-which-configuration-should-be-used\" >2P or 4P: Which Configuration Should Be Used?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/id\/bess-automatic-transfer-switch\/#open-transition-is-an-important-limitation\" >Open Transition Is an Important Limitation<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/id\/bess-automatic-transfer-switch\/#can-it-be-used-between-utility-and-generator\" >Can It Be Used Between Utility and Generator?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/id\/bess-automatic-transfer-switch\/#can-it-be-used-with-a-pcs\" >Can It Be Used with a PCS?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/id\/bess-automatic-transfer-switch\/#do-not-select-ats-current-from-the-bess-kwh-rating\" >Do Not Select ATS Current from the BESS kWh Rating<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/id\/bess-automatic-transfer-switch\/#what-to-send-before-asking-for-a-bess-ats-recommendation\" >What to Send Before Asking for a BESS ATS Recommendation<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/id\/bess-automatic-transfer-switch\/#need-to-confirm-whether-this-compact-ats-fits-your-bess-ac-circuit\" >Need to Confirm Whether This Compact ATS Fits Your BESS AC Circuit?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/id\/bess-automatic-transfer-switch\/#faq\" >FAQ<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/id\/bess-automatic-transfer-switch\/#references-and-engineering-notes\" >References and Engineering Notes<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"quick-answer\"><\/span>Jawaban Cepat<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n    <p>\r\n      A compact LEEYEE ATS can be considered where a BESS project needs to transfer a low-voltage AC load between two defined AC sources,\r\n      such as utility and generator power, or another project-approved AC source arrangement.\r\n    <\/p>\r\n    <p>\r\n      It does not replace the PCS, BMS, EMS, battery contactor, DC disconnect or battery-side protection equipment.\r\n      Any transfer involving PCS output or microgrid operation must be confirmed against the actual system design.\r\n    <\/p>\r\n  <\/section>\r\n\r\n  <figure class=\"ly-figure ly-figure-product\">\r\n    <img\r\n      src=\"https:\/\/www.cnspd.com\/wp-content\/uploads\/2026\/06\/3.png\"\r\n      alt=\"LEEYEE compact 2 pole and 4 pole automatic transfer switches for low voltage AC source transfer\"\r\n      loading=\"lazy\"\r\n      decoding=\"async\">\r\n    <figcaption>\r\n      LEEYEE compact 2P and 4P automatic transfer switches for low-voltage AC source transfer. These devices should not be treated as battery-side DC switching equipment.\r\n    <\/figcaption>\r\n  <\/figure>\r\n\r\n  <h2><span class=\"ez-toc-section\" id=\"where-can-this-compact-ats-fit-in-a-bess-project\"><\/span>Where Can This Compact ATS Fit in a BESS Project?<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n  <p>\r\n    The product shown above is a compact integrated ATS intended for ordinary low-voltage AC source transfer.\r\n    In a BESS project, it may be suitable for panel-level or auxiliary AC circuits where two AC sources must be selected automatically.\r\n  <\/p>\r\n\r\n  <div class=\"ly-table-wrap\">\r\n    <table>\r\n      <thead>\r\n        <tr>\r\n          <th>Application Position<\/th>\r\n          <th>Suitability<\/th>\r\n          <th>Makna Teknik<\/th>\r\n        <\/tr>\r\n      <\/thead>\r\n      <tbody>\r\n        <tr>\r\n          <td>Battery DC bus<\/td>\r\n          <td><span class=\"ly-no\">Not suitable<\/span><\/td>\r\n          <td>This compact ATS should not be used for direct high-voltage battery DC switching.<\/td>\r\n        <\/tr>\r\n        <tr>\r\n          <td>Utility \u2194 Generator<\/td>\r\n          <td><span class=\"ly-fit\">Suitable in many LV applications<\/span><\/td>\r\n          <td>A typical low-voltage AC dual-source transfer application, subject to current, voltage and project requirements.<\/td>\r\n        <\/tr>\r\n        <tr>\r\n          <td>AC auxiliary load supply<\/td>\r\n          <td><span class=\"ly-fit\">Potentially suitable<\/span><\/td>\r\n          <td>Useful where auxiliary loads can tolerate normal open-transition transfer interruption.<\/td>\r\n        <\/tr>\r\n        <tr>\r\n          <td>PCS AC output \u2194 another AC source<\/td>\r\n          <td><span class=\"ly-confirm\">Bergantung pada proyek<\/span><\/td>\r\n          <td>PCS behaviour, source compatibility, interlocking and control logic must be confirmed first.<\/td>\r\n        <\/tr>\r\n        <tr>\r\n          <td>Large BESS main power switching<\/td>\r\n          <td><span class=\"ly-confirm\">Requires separate evaluation<\/span><\/td>\r\n          <td>Do not assume a compact ATS is suitable for high-current main-bus transfer simply because the project is a BESS application.<\/td>\r\n        <\/tr>\r\n      <\/tbody>\r\n    <\/table>\r\n  <\/div>\r\n\r\n  <div class=\"ly-boundary\">\r\n    <span class=\"ly-boundary-title\">Batas produk<\/span>\r\n    This page focuses on LEEYEE's compact low-voltage AC ATS range.\r\n    It should not be interpreted as a claim that the same product can perform high-voltage DC battery switching,\r\n    large-current BESS main-bus switching, synchronized source paralleling or seamless microgrid transfer.\r\n  <\/div>\r\n\r\n  <h2><span class=\"ez-toc-section\" id=\"why-the-ats-belongs-on-the-ac-side\"><\/span>Why the ATS Belongs on the AC Side<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n  <p>\r\n    A BESS typically contains a battery system, PCS, BMS and higher-level control logic.\r\n    The battery stores energy on the DC side, while the PCS handles power conversion between the battery and the AC system.\r\n  <\/p>\r\n\r\n  <p>\r\n    A compact ATS performs a much narrower function:\r\n    it transfers a suitable AC load between two predefined sources.\r\n    It does not manage battery SOC, charging and discharging strategy, cell protection or inverter power conversion.\r\n  <\/p>\r\n\r\n  <div class=\"ly-warning\">\r\n    <strong>Penting:<\/strong>\r\n    Do not install this compact ATS directly between battery strings or on a high-voltage DC battery bus.\r\n    Battery-side isolation and switching must use devices specified for the actual DC voltage, fault duty and BESS architecture.\r\n  <\/div>\r\n\r\n  <h2><span class=\"ez-toc-section\" id=\"what-type-of-bess-load-is-a-better-match-for-this-product\"><\/span>What Type of BESS Load Is a Better Match for This Product?<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n  <p>\r\n    This compact ATS is a better fit when the transfer point is a relatively conventional low-voltage AC circuit rather than a large utility-scale storage main bus.\r\n  <\/p>\r\n\r\n  <div class=\"ly-two-col\">\r\n    <div class=\"ly-mini-card\">\r\n      <h3>Better-matched applications<\/h3>\r\n      <ul>\r\n        <li>Low-voltage auxiliary distribution<\/li>\r\n        <li>Utility-to-generator backup circuits<\/li>\r\n        <li>Small or medium panel-level transfer circuits<\/li>\r\n        <li>Critical AC loads that accept open-transition interruption<\/li>\r\n        <li>OEM control or distribution cabinets within the ATS rated range<\/li>\r\n      <\/ul>\r\n    <\/div>\r\n\r\n    <div class=\"ly-mini-card\">\r\n      <h3>Applications requiring another solution<\/h3>\r\n      <ul>\r\n        <li>High-voltage battery DC switching<\/li>\r\n        <li>Large BESS main-bus transfer beyond the product rating<\/li>\r\n        <li>Closed-transition or no-break transfer<\/li>\r\n        <li>Synchronized parallel source transfer<\/li>\r\n        <li>Complex multi-source microgrid control<\/li>\r\n      <\/ul>\r\n    <\/div>\r\n  <\/div>\r\n\r\n  <h2><span class=\"ez-toc-section\" id=\"2p-or-4p-which-configuration-should-be-used\"><\/span>2P or 4P: Which Configuration Should Be Used?<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n  <p>\r\n    The product shown is available in compact 2-pole and 4-pole configurations.\r\n    The correct choice depends on the AC system rather than on the term \u201cBESS\u201d itself.\r\n  <\/p>\r\n\r\n  <div class=\"ly-table-wrap\">\r\n    <table>\r\n      <thead>\r\n        <tr>\r\n          <th>Konfigurasi<\/th>\r\n          <th>Penggunaan Umum<\/th>\r\n          <th>Apa yang Harus Dikonfirmasi<\/th>\r\n        <\/tr>\r\n      <\/thead>\r\n      <tbody>\r\n        <tr>\r\n          <td><strong>2P<\/strong><\/td>\r\n          <td>Single-phase low-voltage AC source transfer<\/td>\r\n          <td>System voltage, neutral arrangement, source configuration and actual load current.<\/td>\r\n        <\/tr>\r\n        <tr>\r\n          <td><strong>4P<\/strong><\/td>\r\n          <td>Three-phase applications where all required conductors, including neutral where specified, are switched<\/td>\r\n          <td>Grounding system, neutral switching requirement, source arrangement and project single-line diagram.<\/td>\r\n        <\/tr>\r\n      <\/tbody>\r\n    <\/table>\r\n  <\/div>\r\n\r\n  <p>\r\n    Pole selection should therefore be based on the actual single-line diagram.\r\n    A buyer should not choose 2P or 4P only because the project is described as an energy storage system.\r\n  <\/p>\r\n\r\n  <h2><span class=\"ez-toc-section\" id=\"open-transition-is-an-important-limitation\"><\/span>Open Transition Is an Important Limitation<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n  <p>\r\n    LEEYEE's standard compact ATS is primarily intended for ordinary <strong>open-transition<\/strong> transfer.\r\n    The connected source is disconnected before the alternative source is connected.\r\n  <\/p>\r\n\r\n  <div class=\"ly-key-line\">\r\n    Open transition means there is an interruption during source transfer. It should not be described as seamless or no-break transfer.\r\n  <\/div>\r\n\r\n  <p>\r\n    This is acceptable for many conventional backup circuits, but not for every BESS load.\r\n    If the downstream equipment cannot tolerate the interruption, the system designer must select another continuity strategy.\r\n  <\/p>\r\n\r\n  <h2><span class=\"ez-toc-section\" id=\"can-it-be-used-between-utility-and-generator\"><\/span>Can It Be Used Between Utility and Generator?<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n  <p>\r\n    Yes, utility-to-generator transfer is one of the more natural applications for this compact ATS when the system voltage,\r\n    current rating, pole configuration and control requirements fall within the selected model's capabilities.\r\n  <\/p>\r\n\r\n  <p>\r\n    In such a project, the ATS may supervise the two AC sources and transfer the load according to the system configuration.\r\n    Generator start logic, dry contacts or other control functions should be confirmed against the actual ATS model and generator controller.\r\n  <\/p>\r\n\r\n  <h2><span class=\"ez-toc-section\" id=\"can-it-be-used-with-a-pcs\"><\/span>Can It Be Used with a PCS?<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n  <p>\r\n    Possibly, but this is not a universal application.\r\n    A PCS is not simply another generic AC source.\r\n    Its operating mode may depend on synchronization, grid-following or grid-forming behaviour, anti-islanding logic,\r\n    EMS commands and internal protection.\r\n  <\/p>\r\n\r\n  <p>\r\n    Therefore, if one transfer source is the PCS AC output, the system integrator should confirm:\r\n  <\/p>\r\n\r\n  <ul>\r\n    <li>whether the PCS is allowed to energize the proposed AC bus,<\/li>\r\n    <li>whether it may be disconnected and reconnected by an external ATS,<\/li>\r\n    <li>whether any synchronization is required,<\/li>\r\n    <li>how source interlocking is implemented,<\/li>\r\n    <li>which controller has authority over the transfer sequence.<\/li>\r\n  <\/ul>\r\n\r\n  <div class=\"ly-warning\">\r\n    <strong>Do not treat a standard compact ATS as a complete PCS \/ EMS \/ microgrid controller.<\/strong>\r\n    If the project requires coordinated multi-source operation, additional control and switching equipment may be necessary.\r\n  <\/div>\r\n\r\n  <h2><span class=\"ez-toc-section\" id=\"do-not-select-ats-current-from-the-bess-kwh-rating\"><\/span>Do Not Select ATS Current from the BESS kWh Rating<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n  <p>\r\n    Battery energy capacity and ATS current rating describe different things.\r\n    A 100 kWh, 500 kWh or 1 MWh battery capacity does not directly determine the ATS ampere rating.\r\n  <\/p>\r\n\r\n  <p>\r\n    ATS selection must instead be based on the actual AC transfer circuit:\r\n    system voltage, load current, pole configuration, source arrangement, switching duty and protection design.\r\n  <\/p>\r\n\r\n  <div class=\"ly-two-col\">\r\n    <div class=\"ly-mini-card\">\r\n      <h3>Check these parameters<\/h3>\r\n      <ul>\r\n        <li>AC voltage<\/li>\r\n        <li>Icurrent beban<\/li>\r\n        <li>Source A and Source B<\/li>\r\n        <li>2P or 4P requirement<\/li>\r\n        <li>Neutral switching<\/li>\r\n        <li>Transfer interruption tolerance<\/li>\r\n      <\/ul>\r\n    <\/div>\r\n\r\n    <div class=\"ly-mini-card\">\r\n      <h3>Do not use these as shortcuts<\/h3>\r\n      <ul>\r\n        <li>BESS kWh alone<\/li>\r\n        <li>Battery voltage alone<\/li>\r\n        <li>\u201cEnergy storage\u201d as the only project description<\/li>\r\n        <li>Assuming every PCS output behaves like utility power<\/li>\r\n        <li>Assuming all critical loads accept open transition<\/li>\r\n      <\/ul>\r\n    <\/div>\r\n  <\/div>\r\n\r\n  <section class=\"ly-checklist\">\r\n    <h2><span class=\"ez-toc-section\" id=\"what-to-send-before-asking-for-a-bess-ats-recommendation\"><\/span>What to Send Before Asking for a BESS ATS Recommendation<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n    <p>\r\n      For a useful model review, provide:\r\n    <\/p>\r\n    <ul>\r\n      <li>Diagram satu garis<\/li>\r\n      <li>ATS installation position<\/li>\r\n      <li>Source A type<\/li>\r\n      <li>Source B type<\/li>\r\n      <li>Nominal AC voltage<\/li>\r\n      <li>Frekuensi sistem<\/li>\r\n      <li>Icurrent beban<\/li>\r\n      <li>Sistem fase tunggal atau tiga fase<\/li>\r\n      <li>2P or 4P requirement<\/li>\r\n      <li>Neutral arrangement<\/li>\r\n      <li>Pengaturan pembumian<\/li>\r\n      <li>PCS AC parameters, if involved<\/li>\r\n      <li>Generator information, if involved<\/li>\r\n      <li>Logika pemindahan yang diperlukan<\/li>\r\n      <li>Acceptable interruption time<\/li>\r\n      <li>Required control or status signals<\/li>\r\n    <\/ul>\r\n  <\/section>\r\n\r\n  <section class=\"ly-cta\">\r\n    <h2><span class=\"ez-toc-section\" id=\"need-to-confirm-whether-this-compact-ats-fits-your-bess-ac-circuit\"><\/span>Need to Confirm Whether This Compact ATS Fits Your BESS AC Circuit?<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n    <p>\r\n      Send your single-line diagram, AC voltage, load current, source arrangement and 2P \/ 4P requirement.\r\n      LEEYEE can help review whether this compact open-transition ATS is suitable for the proposed low-voltage AC transfer point.\r\n    <\/p>\r\n\r\n    <button\r\n      type=\"button\"\r\n      class=\"leeyee-about-btn-light leeyee-site-popup-btn\"\r\n      aria-label=\"Request BESS ATS Selection Help\">\r\n      <span class=\"w-btn-label\">Request BESS ATS Selection Help<\/span>\r\n    <\/button>\r\n  <\/section>\r\n\r\n  <h2><span class=\"ez-toc-section\" id=\"faq\"><\/span>FAQ<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n  <div class=\"ly-faq\">\r\n\r\n    <div class=\"ly-faq-item\">\r\n      <h3>Can this LEEYEE ATS switch a battery DC circuit?<\/h3>\r\n      <p>\r\n        No. The compact ATS shown on this page is intended for suitable low-voltage AC source transfer.\r\n        It should not be specified as a high-voltage battery-side DC switching device.\r\n      <\/p>\r\n    <\/div>\r\n\r\n    <div class=\"ly-faq-item\">\r\n      <h3>Is this product suitable for every BESS main power circuit?<\/h3>\r\n      <p>\r\n        No. Suitability depends on the actual AC current, voltage, switching duty and architecture.\r\n        Large-current BESS main-bus transfer may require a different transfer solution.\r\n      <\/p>\r\n    <\/div>\r\n\r\n    <div class=\"ly-faq-item\">\r\n      <h3>Can I use the 2P version for a single-phase BESS auxiliary circuit?<\/h3>\r\n      <p>\r\n        It may be suitable where the actual voltage, current, neutral arrangement and transfer logic match the selected model.\r\n        The project single-line diagram should be checked before selection.\r\n      <\/p>\r\n    <\/div>\r\n\r\n    <div class=\"ly-faq-item\">\r\n      <h3>When would the 4P version be considered?<\/h3>\r\n      <p>\r\n        A 4P configuration may be used in suitable three-phase applications where the project requires the relevant conductors,\r\n        including neutral where specified, to be switched. The grounding and neutral scheme must be confirmed first.\r\n      <\/p>\r\n    <\/div>\r\n\r\n    <div class=\"ly-faq-item\">\r\n      <h3>Does this ATS provide seamless transfer?<\/h3>\r\n      <p>\r\n        No. The standard compact ATS is intended for open-transition operation, so the active source is disconnected before the alternative source is connected.\r\n      <\/p>\r\n    <\/div>\r\n\r\n    <div class=\"ly-faq-item\">\r\n      <h3>Can it work with a generator in a BESS project?<\/h3>\r\n      <p>\r\n        Yes, generator backup is a natural low-voltage AC transfer application when the electrical rating and control requirements match the selected ATS.\r\n      <\/p>\r\n    <\/div>\r\n\r\n  <\/div>\r\n\r\n  <section class=\"ly-references\">\r\n    <h2><span class=\"ez-toc-section\" id=\"references-and-engineering-notes\"><\/span>References and Engineering Notes<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n    <ol>\r\n      <li>\r\n        IEC 60947-6-1, Low-voltage switchgear and controlgear \u2014 transfer switching equipment.\r\n      <\/li>\r\n      <li>\r\n        Final BESS topology, PCS behaviour, grounding, neutral treatment, protection coordination and source-control sequence must be verified against the project's actual single-line diagram and equipment documentation.\r\n      <\/li>\r\n    <\/ol>\r\n  <\/section>\r\n\r\n<\/article>\r\n\r\n<script>\r\ndocument.addEventListener('DOMContentLoaded', function () {\r\n  var aboutPopupButtons = document.querySelectorAll('.leeyee-site-popup-btn');\r\n\r\n  aboutPopupButtons.forEach(function (button) {\r\n    button.addEventListener('click', function () {\r\n      var realPopupTrigger = document.querySelector(\r\n        '.w-popup.ush_popup_1 .w-popup-trigger'\r\n      );\r\n\r\n      if (realPopupTrigger) {\r\n        realPopupTrigger.click();\r\n      } else {\r\n        window.open(\r\n          'https:\/\/www.cnspd.com\/contact\/',\r\n          '_blank',\r\n          'noopener'\r\n        );\r\n      }\r\n    });\r\n  });\r\n});\r\n<\/script>\t\t\t\t<\/div>\n\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>BESS \u00b7 Low-Voltage AC-Side TransferA battery energy storage system may require automatic source transfer, but the ATS must be used at the correct point in the system. LEEYEE compact automatic transfer switches are intended for suitable low-voltage AC-side transfer applications, not for direct switching of a high-voltage battery DC bus. Quick Answer A compact LEEYEE&#8230;<\/p>","protected":false},"author":18,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[490,1,422],"tags":[],"class_list":["post-31597","post","type-post","status-publish","format-standard","hentry","category-isolator-switching","category-news","category-industry-news"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Automatic Transfer Switch for BESS AC Side | LEEYEE<\/title>\n<meta name=\"description\" content=\"Learn where LEEYEE compact 2P and 4P automatic transfer switches can be used in BESS low-voltage AC circuits, including utility, generator and auxiliary load transfer, plus key limits for PCS and battery-side applications.\" \/>\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.cnspd.com\/id\/bess-automatic-transfer-switch\/\" \/>\n<meta property=\"og:locale\" content=\"id_ID\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Automatic Transfer Switch for BESS AC Side | LEEYEE\" \/>\n<meta property=\"og:description\" content=\"Learn where LEEYEE compact 2P and 4P automatic transfer switches can be used in BESS low-voltage AC circuits, including utility, generator and auxiliary load transfer, plus key limits for PCS and battery-side applications.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.cnspd.com\/id\/bess-automatic-transfer-switch\/\" \/>\n<meta property=\"og:site_name\" content=\"Surge Protector, Surge Arrestor, Isolating Switch - 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