{"id":31696,"date":"2026-10-16T10:20:44","date_gmt":"2026-10-16T02:20:44","guid":{"rendered":"https:\/\/www.cnspd.com\/?p=31696"},"modified":"2026-10-16T11:00:07","modified_gmt":"2026-10-16T03:00:07","slug":"ats-vs-amf-panel-what-generator-buyers-should-know","status":"publish","type":"post","link":"https:\/\/www.cnspd.com\/th\/ats-vs-amf-panel\/","title":{"rendered":"ATS vs AMF Panel: What Generator Buyers Should Know"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"31696\" class=\"elementor elementor-31696\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7825307 e-flex e-con-boxed e-con e-parent\" data-id=\"7825307\" 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-8a5036a elementor-widget elementor-widget-html\" data-id=\"8a5036a\" data-element_type=\"widget\" data-e-type=\"widget\" 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tbody tr{\n    margin:0 0 14px;\n    padding:5px 15px;\n    background:#fff;\n    border:1px solid var(--ly-line);\n    border-radius:8px;\n  }\n\n  #leeyee-ats-amf-page td{\n    display:grid;\n    grid-template-columns:112px minmax(0,1fr);\n    gap:10px;\n    padding:10px 0;\n    border-bottom:1px solid var(--ly-line);\n    font-size:14.5px;\n  }\n\n  #leeyee-ats-amf-page td::before{\n    content:attr(data-label);\n    color:var(--ly-blue-dark);\n    font-weight:700;\n  }\n\n  #leeyee-ats-amf-page tbody tr td:last-child{\n    border-bottom:0;\n  }\n\n  #leeyee-ats-amf-page .leeyee-about-btn-light{\n    width:100%;\n    max-width:100%;\n    min-height:50px;\n    padding-left:18px;\n    padding-right:18px;\n  }\n}\n\n@media(max-width:390px){\n  #leeyee-ats-amf-page h2{\n    font-size:25px;\n  }\n\n  #leeyee-ats-amf-page h3{\n    font-size:19px;\n  }\n\n  #leeyee-ats-amf-page td{\n    grid-template-columns:96px minmax(0,1fr);\n    gap:8px;\n  }\n}\n<\/style>\n\n<article id=\"leeyee-ats-amf-page\">\n\n  <span class=\"ly-topic-label\">Generator Backup System Selection<\/span>\n\n  <p class=\"ly-intro\">\n    <strong>ATS vs AMF panel<\/strong> is often explained too simply. An ATS is not just a switch\n    that waits for two already-running power sources, and an AMF panel is not simply a\n    \u201cmore advanced ATS.\u201d They solve different parts of a generator backup system, although\n    some controller functions can overlap.\n  <\/p>\n\n  <p>\n    For generator buyers, genset integrators, panel builders and electrical contractors, the useful\n    question is: <strong>who detects the mains problem, who requests generator start, who manages\n    the genset, and which device physically transfers the load?<\/strong>\n  <\/p>\n\n  <section class=\"ly-quick\">\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\">Table of Contents<\/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\/th\/ats-vs-amf-panel\/#ats-vs-amf-panel-quick-answer\" >ATS vs AMF Panel: Quick Answer<\/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\/th\/ats-vs-amf-panel\/#what-is-the-real-difference-between-ats-and-amf\" >What Is the Real Difference Between ATS and AMF?<\/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\/th\/ats-vs-amf-panel\/#can-an-ats-start-a-generator\" >Can an ATS Start a Generator?<\/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\/th\/ats-vs-amf-panel\/#ats-body-ats-panel-and-amf-panel-are-different-procurement-scopes\" >ATS Body, ATS Panel and AMF Panel Are Different Procurement Scopes<\/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\/th\/ats-vs-amf-panel\/#when-can-ats-genset-controller-be-enough\" >When Can ATS + Genset Controller Be Enough?<\/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\/th\/ats-vs-amf-panel\/#when-is-an-independent-amf-or-wider-generator-control-system-more-appropriate\" >When Is an Independent AMF or Wider Generator-Control System More Appropriate?<\/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\/th\/ats-vs-amf-panel\/#which-one-should-a-generator-buyer-purchase\" >Which One Should a Generator Buyer Purchase?<\/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\/th\/ats-vs-amf-panel\/#generator-start-signal-what-must-be-checked\" >Generator Start Signal: What Must Be Checked?<\/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\/th\/ats-vs-amf-panel\/#where-the-leeyee-compact-ats-fits\" >Where the LEEYEE Compact ATS Fits<\/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\/th\/ats-vs-amf-panel\/#do-you-need-an-ats-body-or-a-complete-ats-panel\" >Do You Need an ATS Body or a Complete ATS Panel?<\/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\/th\/ats-vs-amf-panel\/#common-ats-vs-amf-procurement-mistakes\" >Common ATS vs AMF Procurement Mistakes<\/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\/th\/ats-vs-amf-panel\/#before-ordering-ats-and-generator-interface-checklist\" >Before Ordering: ATS and Generator Interface Checklist<\/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\/th\/ats-vs-amf-panel\/#ats-vs-amf-panel-faq\" >ATS vs AMF Panel FAQ<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/th\/ats-vs-amf-panel\/#final-selection-rule\" >Final Selection Rule<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/th\/ats-vs-amf-panel\/#references\" >References<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"ats-vs-amf-panel-quick-answer\"><\/span>ATS vs AMF Panel: Quick Answer<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n    <p>\n      An <strong>ATS (Automatic Transfer Switch)<\/strong> is fundamentally responsible for\n      transferring a load between power supply sources. IEC 60947-6-1:2026 applies to transfer\n      switching equipment and includes automatic transfer switching equipment with its controller\n      as well as stand-alone ATS controllers.[1]\n    <\/p>\n\n    <p>\n      An <strong>AMF (Automatic Mains Failure) controller or panel<\/strong> is centred on the\n      generator response to a mains failure. A dedicated AMF controller can monitor mains and\n      generator conditions, provide start and fuel outputs, and support generator monitoring\n      and protection functions depending on the controller design.[2]\n    <\/p>\n\n    <p>\n      A generator project therefore does <strong>not automatically require a separate complete\n      AMF panel<\/strong>. If the genset already has a suitable controller, the remaining requirement\n      may mainly be source transfer plus a compatible control interface. The actual start-command\n      architecture must be confirmed for the selected equipment and project.\n    <\/p>\n  <\/section>\n\n  <p class=\"ly-table-note\">\n    Product names differ between suppliers. For procurement, focus first on the responsibility\n    assigned to each device.\n  <\/p>\n\n  <div class=\"ly-table-wrap\">\n    <table class=\"ly-three-col\">\n      <thead>\n        <tr>\n          <th>Equipment<\/th>\n          <th>Main Responsibility<\/th>\n          <th>Buyer Must Confirm<\/th>\n        <\/tr>\n      <\/thead>\n      <tbody>\n        <tr>\n          <td data-label=\"Equipment\"><strong>ATS \/ ATSE<\/strong><\/td>\n          <td data-label=\"Main role\">Transfer the load between the normal and alternative power sources<\/td>\n          <td data-label=\"Confirm\">Current, poles, voltage, source arrangement, transfer method and controller functions<\/td>\n        <\/tr>\n        <tr>\n          <td data-label=\"Equipment\"><strong>ATS controller<\/strong><\/td>\n          <td data-label=\"Main role\">Monitor sources and execute transfer logic; suitable controllers may also provide generator-start outputs<\/td>\n          <td data-label=\"Confirm\">Source sensing, timers, available I\/O and terminal logic<\/td>\n        <\/tr>\n        <tr>\n          <td data-label=\"Equipment\"><strong>Genset controller<\/strong><\/td>\n          <td data-label=\"Main role\">Manage generator starting, stopping, monitoring, alarms and protection<\/td>\n          <td data-label=\"Confirm\">Remote-start input, engine supervision, monitoring and available I\/O<\/td>\n        <\/tr>\n        <tr>\n          <td data-label=\"Equipment\"><strong>AMF controller \/ panel<\/strong><\/td>\n          <td data-label=\"Main role\">Coordinate generator response to mains failure and, depending on design, command switching equipment<\/td>\n          <td data-label=\"Confirm\">Control scope, switching hardware, protection, monitoring and approved drawings<\/td>\n        <\/tr>\n      <\/tbody>\n    <\/table>\n  <\/div>\n\n  <div class=\"ly-note\">\n    <p>\n      <strong>Buyer meaning:<\/strong> do not decide from the words \u201cATS\u201d or \u201cAMF\u201d alone.\n      Ask who monitors the normal source, who sends the generator-start request, who manages\n      the generator, and which device physically transfers the load.\n    <\/p>\n  <\/div>\n\n  <h2><span class=\"ez-toc-section\" id=\"what-is-the-real-difference-between-ats-and-amf\"><\/span>What Is the Real Difference Between ATS and AMF?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n  <p>\n    The clearest distinction is <strong>system responsibility<\/strong>.\n  <\/p>\n\n  <p>\n    IEC 60947-6-1:2026 applies to transfer switching equipment used to transfer a load between\n    power supply sources. Its scope includes automatic transfer switching equipment with its\n    controller and stand-alone ATS controllers.[1]\n  <\/p>\n\n  <p>\n    This makes <strong>load transfer<\/strong> the central ATS function. Depending on its design,\n    an ATS controller may additionally perform source sensing, timing, status signalling and\n    generator-start control.\n  <\/p>\n\n  <p>\n    AMF means <strong>Automatic Mains Failure<\/strong>. The Deep Sea Electronics DSE4520 MKII,\n    for example, is identified as an Auto Mains (Utility) Failure Control Module and provides\n    mains\/generator sensing, monitoring, start and fuel outputs and protection functions.[2]\n  <\/p>\n\n  <p>\n    ATS and AMF functions can therefore work together closely without being identical equipment.\n  <\/p>\n\n  <h2><span class=\"ez-toc-section\" id=\"can-an-ats-start-a-generator\"><\/span>Can an ATS Start a Generator?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n  <p>\n    Saying that an ATS \u201ccannot start a generator\u201d is too absolute.\n  <\/p>\n\n  <p>\n    Automatic transfer switches can include <strong>engine-start contacts<\/strong>. Schneider\n    Electric \/ ASCO technical guidance confirms that suitable transfer switches can use\n    engine-start contacts to send a start signal to a generator when the preferred source is lost.[3]\n  <\/p>\n\n  <p>\n    The important distinction is what happens <strong>after<\/strong> that signal. A start contact\n    requests generator operation; it does not mean the ATS replaces the generator controller's\n    wider engine-management, monitoring and protection functions.\n  <\/p>\n\n  <div class=\"ly-warning\">\n    <p>\n      <strong>Important LEEYEE product boundary:<\/strong> the fact that some ATS controllers\n      support generator-start contacts does not mean every LEEYEE compact ATS model includes\n      that output. Generator-start I\/O must be confirmed for the selected model and project.\n    <\/p>\n  <\/div>\n\n  <div class=\"ly-sequence\">\n    <div class=\"ly-step\">\n      <strong>1. Normal source becomes unacceptable<\/strong>\n      The transfer-control system detects the source condition according to the configured settings.\n    <\/div>\n    <div class=\"ly-step\">\n      <strong>2. Generator start is requested<\/strong>\n      The start request may come from a suitable ATS controller, AMF controller or another\n      approved control device.\n    <\/div>\n    <div class=\"ly-step\">\n      <strong>3. Genset controller manages the generator<\/strong>\n      The genset controller performs engine starting, supervision and generator-specific control.\n    <\/div>\n    <div class=\"ly-step\">\n      <strong>4. Generator source becomes acceptable<\/strong>\n      The transfer-control system evaluates the alternative source according to the approved settings.\n    <\/div>\n    <div class=\"ly-step\">\n      <strong>5. ATS transfers the load<\/strong>\n      The ATS connects the load to the alternative source according to the approved transfer sequence.\n    <\/div>\n  <\/div>\n\n  <h2><span class=\"ez-toc-section\" id=\"ats-body-ats-panel-and-amf-panel-are-different-procurement-scopes\"><\/span>ATS Body, ATS Panel and AMF Panel Are Different Procurement Scopes<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n  <h3>ATS body<\/h3>\n  <p>\n    The ATS body is the transfer switching device itself. It carries the load current and\n    changes the connection between the normal and alternative power sources.\n  <\/p>\n\n  <h3>ATS panel<\/h3>\n  <p>\n    An ATS panel is a wider assembly built around the transfer function. Depending on the\n    project, it may also contain protection, terminals, control power, indication, metering\n    and other components.\n  <\/p>\n\n  <h3>AMF panel<\/h3>\n  <p>\n    An AMF panel is normally centred more strongly on automatic generator operation following\n    mains failure. Its exact contents depend on the project architecture.\n  <\/p>\n\n  <div class=\"ly-note\">\n    <p>\n      <strong>Engineering meaning:<\/strong> \u201cATS vs AMF\u201d is mainly a system-function question.\n      \u201cATS body vs ATS panel\u201d is mainly an equipment-scope question.\n    <\/p>\n  <\/div>\n\n  <h2><span class=\"ez-toc-section\" id=\"when-can-ats-genset-controller-be-enough\"><\/span>When Can ATS + Genset Controller Be Enough?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n  <p>\n    Many generator sets already include a controller that handles generator starting, stopping,\n    monitoring and protection.\n  <\/p>\n\n  <p>\n    If those functions already exist, the remaining requirement may mainly be automatic source\n    transfer. The project then needs to define how the generator-start request and any required\n    status feedback are handled.\n  <\/p>\n\n  <div class=\"ly-decision\">\n    <div class=\"ly-decision-row\">\n      <div class=\"ly-decision-q\">Generator controller<\/div>\n      <div class=\"ly-decision-a\">\n        The genset already has a suitable controller with the required automatic operating functions.\n      <\/div>\n    <\/div>\n    <div class=\"ly-decision-row\">\n      <div class=\"ly-decision-q\">Source arrangement<\/div>\n      <div class=\"ly-decision-a\">\n        One normal utility source and one standby generator source.\n      <\/div>\n    <\/div>\n    <div class=\"ly-decision-row\">\n      <div class=\"ly-decision-q\">Transfer method<\/div>\n      <div class=\"ly-decision-a\">\n        Standard open-transition transfer is acceptable for the application.\n      <\/div>\n    <\/div>\n    <div class=\"ly-decision-row\">\n      <div class=\"ly-decision-q\">Control complexity<\/div>\n      <div class=\"ly-decision-a\">\n        No synchronising, generator paralleling or multi-generator load-sharing function is required.\n      <\/div>\n    <\/div>\n    <div class=\"ly-decision-row\">\n      <div class=\"ly-decision-q\">Interface<\/div>\n      <div class=\"ly-decision-a\">\n        The approved control design defines a compatible generator-start and status interface.\n      <\/div>\n    <\/div>\n  <\/div>\n\n  <div class=\"ly-note\">\n    <p>\n      <strong>Procurement conclusion:<\/strong> if the generator already includes an appropriate\n      controller, first determine whether the missing equipment is simply the source-transfer device.\n    <\/p>\n  <\/div>\n\n  <h2><span class=\"ez-toc-section\" id=\"when-is-an-independent-amf-or-wider-generator-control-system-more-appropriate\"><\/span>When Is an Independent AMF or Wider Generator-Control System More Appropriate?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n  <p>\n    More extensive control equipment becomes relevant when a project extends beyond a simple\n    one-utility \/ one-generator automatic-transfer arrangement.\n  <\/p>\n\n  <ul>\n    <li>additional generator-engine protection or monitoring;<\/li>\n    <li>complex start, stop or alarm logic;<\/li>\n    <li>centralised generator fault management;<\/li>\n    <li>multiple generators;<\/li>\n    <li>generator synchronising or paralleling;<\/li>\n    <li>load sharing;<\/li>\n    <li>complex load sequencing;<\/li>\n    <li>advanced remote monitoring or communications;<\/li>\n    <li>project-specific interlocking and control sequences.<\/li>\n  <\/ul>\n\n  <p>\n    Dedicated synchronising and load-sharing generator controllers exist for these more complex\n    architectures.[4][5] These functions should not be treated as normal compact-ATS functionality.\n  <\/p>\n\n  <h2><span class=\"ez-toc-section\" id=\"which-one-should-a-generator-buyer-purchase\"><\/span>Which One Should a Generator Buyer Purchase?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n  <div class=\"ly-table-wrap\">\n    <table class=\"ly-three-col\">\n      <thead>\n        <tr>\n          <th>Your Existing System<\/th>\n          <th>Likely Direction<\/th>\n          <th>Confirm Before Ordering<\/th>\n        <\/tr>\n      <\/thead>\n      <tbody>\n        <tr>\n          <td data-label=\"System\">Genset already has a capable controller<\/td>\n          <td data-label=\"Direction\">Evaluate whether the missing requirement is an ATS<\/td>\n          <td data-label=\"Confirm\">Transfer logic, source sensing and generator-start architecture<\/td>\n        <\/tr>\n        <tr>\n          <td data-label=\"System\">Generator has only basic local control<\/td>\n          <td data-label=\"Direction\">Additional AMF \/ genset control may be required<\/td>\n          <td data-label=\"Confirm\">Start\/stop, protection, alarms and switching logic<\/td>\n        <\/tr>\n        <tr>\n          <td data-label=\"System\">Simple utility + one standby generator<\/td>\n          <td data-label=\"Direction\">Compact ATS + genset controller may be suitable<\/td>\n          <td data-label=\"Confirm\">Operating sequence and control interfaces<\/td>\n        <\/tr>\n        <tr>\n          <td data-label=\"System\">Complex generator-control specification<\/td>\n          <td data-label=\"Direction\">Independent AMF or engineered control system<\/td>\n          <td data-label=\"Confirm\">Protection, alarms, communications and drawings<\/td>\n        <\/tr>\n        <tr>\n          <td data-label=\"System\">Synchronising or multiple generators<\/td>\n          <td data-label=\"Direction\">Purpose-designed generator-control system<\/td>\n          <td data-label=\"Confirm\">A standard compact ATS is not the complete solution<\/td>\n        <\/tr>\n      <\/tbody>\n    <\/table>\n  <\/div>\n\n  <h2><span class=\"ez-toc-section\" id=\"generator-start-signal-what-must-be-checked\"><\/span>Generator Start Signal: What Must Be Checked?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n  <p>\n    The phrase <strong>generator start<\/strong> does not by itself prove that two products can\n    be connected directly.\n  <\/p>\n\n  <ul>\n    <li>which controller generates the start request;<\/li>\n    <li>the actual output and input terminals;<\/li>\n    <li>NO, NC or configurable logic;<\/li>\n    <li>volt-free contact or powered output;<\/li>\n    <li>contact electrical rating;<\/li>\n    <li>genset remote-start input requirement;<\/li>\n    <li>required status or fault feedback;<\/li>\n    <li>the approved control schematic.<\/li>\n  <\/ul>\n\n  <div class=\"ly-note\">\n    <p>\n      <strong>Important for LEEYEE ATS selection:<\/strong> do not assume that a dedicated\n      generator-start dry contact is included merely because an ATS is used in a generator-backup\n      application. Confirm the selected model and required control arrangement before ordering.\n    <\/p>\n  <\/div>\n\n  <h2><span class=\"ez-toc-section\" id=\"where-the-leeyee-compact-ats-fits\"><\/span>Where the LEEYEE Compact ATS Fits<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n  <p>\n    LEEYEE's product discussed here is a <strong>compact integrated automatic transfer switch<\/strong>\n    intended to provide the source-transfer portion of suitable low-voltage backup-power systems.\n  <\/p>\n\n  <figure class=\"ly-product-figure\">\n    <img\n      class=\"ly-product-image\"\n      src=\"https:\/\/www.cnspd.com\/wp-content\/uploads\/2026\/06\/2.png\"\n      alt=\"LEEYEE compact integrated automatic transfer switch for normal and backup power source transfer\"\n      loading=\"lazy\"\n      decoding=\"async\">\n    <figcaption>\n      Actual LEEYEE compact automatic transfer switch. Final voltage, current, poles, controller\n      functions and generator-control interface must be confirmed for the selected model and project.\n    <\/figcaption>\n  <\/figure>\n\n  <div class=\"ly-scope\">\n    <p>\n      <strong>LEEYEE supply boundary:<\/strong> this article does not present LEEYEE as a supplier\n      of a complete large AMF generator-control cabinet, synchronising panel, generator-paralleling\n      panel or multi-generator load-sharing system. The standard product scope discussed here\n      is the compact integrated ATS.\n    <\/p>\n  <\/div>\n\n  <h2><span class=\"ez-toc-section\" id=\"do-you-need-an-ats-body-or-a-complete-ats-panel\"><\/span>Do You Need an ATS Body or a Complete ATS Panel?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n  <p>\n    This is a separate decision from ATS vs AMF.\n  <\/p>\n\n  <p>\n    A panel builder or generator integrator may use a compact ATS as the transfer component and\n    integrate it with the required enclosure, protective devices, terminals and project controls.\n  <\/p>\n\n  <p>\n    A complete ATS panel has a wider scope and may additionally include enclosure requirements,\n    protection, terminals, indication, metering, control power, communication interfaces and\n    documentation.\n  <\/p>\n\n  <h2><span class=\"ez-toc-section\" id=\"common-ats-vs-amf-procurement-mistakes\"><\/span>Common ATS vs AMF Procurement Mistakes<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n  <h3>Assuming every ATS lacks a generator-start function<\/h3>\n  <p>\n    Some ATS controllers provide engine-start contacts.[3] The actual feature must be confirmed\n    for the selected controller.\n  <\/p>\n\n  <h3>Assuming every generator-backup ATS includes a start dry contact<\/h3>\n  <p>\n    Generator-backup suitability and generator-start I\/O are separate specifications.\n  <\/p>\n\n  <h3>Assuming a start output equals complete AMF functionality<\/h3>\n  <p>\n    A generator-start request does not provide all generator monitoring, engine protection and\n    fault-management functions of a dedicated genset controller.[2]\n  <\/p>\n\n  <h3>Ordering another complete controller without checking the genset<\/h3>\n  <p>\n    If the genset already provides the required control functions, the project may mainly need\n    the missing transfer function.\n  <\/p>\n\n  <h3>Buying only an ATS when the specification requires a complete panel<\/h3>\n  <p>\n    The transfer device alone does not automatically include enclosure, protection, terminals,\n    wiring, metering or project documentation.\n  <\/p>\n\n  <h2><span class=\"ez-toc-section\" id=\"before-ordering-ats-and-generator-interface-checklist\"><\/span>Before Ordering: ATS and Generator Interface Checklist<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n  <section class=\"ly-checklist\">\n    <h3>Send these details for technical confirmation<\/h3>\n    <ul>\n      <li>normal power source type;<\/li>\n      <li>backup power source type;<\/li>\n      <li>single-phase or three-phase system;<\/li>\n      <li>system voltage and frequency;<\/li>\n      <li>continuous load current;<\/li>\n      <li>required ATS pole configuration;<\/li>\n      <li>neutral switching requirement;<\/li>\n      <li>generator manufacturer;<\/li>\n      <li>generator controller manufacturer and model;<\/li>\n      <li>generator remote-start information;<\/li>\n      <li>required generator-start architecture;<\/li>\n      <li>required source and transfer logic;<\/li>\n      <li>required status or alarm contacts;<\/li>\n      <li>upstream protection information;<\/li>\n      <li>single-line diagram;<\/li>\n      <li>control schematic or sequence of operation;<\/li>\n      <li>required standard or project specification;<\/li>\n      <li>whether the requirement is ATS only or a wider panel assembly.<\/li>\n    <\/ul>\n  <\/section>\n\n  <section class=\"ly-cta\">\n    <h3>Need to Confirm Whether This LEEYEE ATS Fits Your Generator System?<\/h3>\n    <p>\n      Send the generator controller model, system voltage, load current, required poles and\n      available control drawing. LEEYEE can help review the ATS selection and identify which\n      generator-control interfaces still require project confirmation.\n    <\/p>\n    <button type=\"button\"\n            class=\"leeyee-about-btn-light leeyee-site-popup-btn\"\n            aria-label=\"Request ATS System Review\">\n      <span class=\"w-btn-label\">Request ATS System Review<\/span>\n    <\/button>\n  <\/section>\n\n  <h2><span class=\"ez-toc-section\" id=\"ats-vs-amf-panel-faq\"><\/span>ATS vs AMF Panel FAQ<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n  <div class=\"ly-faq-item\">\n    <h3>What is the main difference between an ATS and an AMF panel?<\/h3>\n    <p>\n      An ATS primarily transfers a load between power sources. An AMF controller or panel is\n      centred on coordinating generator operation after mains failure.\n    <\/p>\n  <\/div>\n\n  <div class=\"ly-faq-item\">\n    <h3>Can an ATS automatically start a generator?<\/h3>\n    <p>\n      Some ATS controllers provide engine-start contacts.[3] Whether a particular ATS includes\n      this function must be confirmed from its documentation.\n    <\/p>\n  <\/div>\n\n  <div class=\"ly-faq-item\">\n    <h3>Does the LEEYEE compact ATS shown here definitely include a generator-start dry contact?<\/h3>\n    <p>\n      This article does not make that claim. Generator-start I\/O must be confirmed for the\n      selected LEEYEE model and project control architecture.\n    <\/p>\n  <\/div>\n\n  <div class=\"ly-faq-item\">\n    <h3>Do I need an AMF panel if the generator already has a controller?<\/h3>\n    <p>\n      Not automatically. If the genset controller already provides the required generator-control\n      functions, the missing requirement may mainly be source transfer.\n    <\/p>\n  <\/div>\n\n  <div class=\"ly-faq-item\">\n    <h3>Can an ATS replace a genset controller?<\/h3>\n    <p>\n      Normally no. A start request does not provide all engine-management, generator-monitoring\n      and fault-protection functions of a dedicated genset controller.[2]\n    <\/p>\n  <\/div>\n\n  <div class=\"ly-faq-item\">\n    <h3>Does LEEYEE supply a complete large AMF generator-control cabinet?<\/h3>\n    <p>\n      This article does not present LEEYEE as a supplier of complete large AMF generator-control\n      cabinets. The standard product scope discussed here is the compact integrated ATS.\n    <\/p>\n  <\/div>\n\n  <h2><span class=\"ez-toc-section\" id=\"final-selection-rule\"><\/span>Final Selection Rule<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n  <p>\n    Do not choose between ATS and AMF from the product name alone.\n  <\/p>\n\n  <p>\n    First identify <strong>who monitors the normal source, who generates the generator-start\n    request, who manages the genset, and who physically transfers the load<\/strong>.\n  <\/p>\n\n  <p>\n    If the generator already provides the required control functions, a suitable LEEYEE compact\n    ATS may provide the missing source-transfer function, subject to confirmation of voltage,\n    current, poles, source arrangement and the required control interface.\n  <\/p>\n\n  <section class=\"ly-references\">\n    <h2><span class=\"ez-toc-section\" id=\"references\"><\/span>References<span class=\"ez-toc-section-end\"><\/span><\/h2>\n    <ol>\n      <li>\n        International Electrotechnical Commission (IEC).\n        <em>IEC 60947-6-1:2026 \u2014 Low-voltage switchgear and controlgear \u2014 Part 6-1:\n        Multiple function equipment \u2014 Transfer switching equipment.<\/em>\n        <a href=\"https:\/\/webstore.iec.ch\/en\/publication\/90494\"\n           target=\"_blank\"\n           rel=\"noopener\">IEC official publication page<\/a>.\n      <\/li>\n      <li>\n        Deep Sea Electronics.\n        <em>DSE4520 MKII \u2014 Auto Mains (Utility) Failure Control Module.<\/em>\n        <a href=\"https:\/\/www.deepseaelectronics.com\/genset\/auto-mains-utility-failure-control-modules\/dse4520-mkii\"\n           target=\"_blank\"\n           rel=\"noopener\">DSE4520 MKII official product page<\/a>.\n      <\/li>\n      <li>\n        Schneider Electric \/ ASCO Power Technologies.\n        <em>Can two or more ASCO transfer switches be connected to and able to start a common generator?<\/em>\n        <a href=\"https:\/\/www.se.com\/us\/en\/faqs\/FAQ000239961\/\"\n           target=\"_blank\"\n           rel=\"noopener\">Schneider Electric official FAQ<\/a>.\n      <\/li>\n      <li>\n        Deep Sea Electronics.\n        <em>DSE8710 Synchronising &amp; Load Sharing Control Module.<\/em>\n        <a href=\"https:\/\/www.deepseaelectronics.com\/genset\/load-sharing-synchronising-control-modules\/dse8710\/downloads\"\n           target=\"_blank\"\n           rel=\"noopener\">DSE8710 official documentation<\/a>.\n      <\/li>\n      <li>\n        Deep Sea Electronics.\n        <em>DSE8610 Synchronising &amp; Load Sharing Control Module.<\/em>\n        <a href=\"https:\/\/www.deepseaelectronics.com\/genset\/load-sharing-synchronising-control-modules\/dse8610\/downloads\"\n           target=\"_blank\"\n           rel=\"noopener\">DSE8610 official documentation<\/a>.\n      <\/li>\n    <\/ol>\n  <\/section>\n\n  <script>\n  document.addEventListener('DOMContentLoaded', function () {\n    var aboutPopupButtons = document.querySelectorAll('.leeyee-site-popup-btn');\n\n    aboutPopupButtons.forEach(function (button) {\n      button.addEventListener('click', function () {\n        var realPopupTrigger = document.querySelector(\n          '.w-popup.ush_popup_1 .w-popup-trigger'\n        );\n\n        if (realPopupTrigger) {\n          realPopupTrigger.click();\n        } else {\n          window.open(\n            'https:\/\/www.cnspd.com\/contact\/',\n            '_blank',\n            'noopener'\n          );\n        }\n      });\n    });\n  });\n  <\/script>\n\n<\/article>\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>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Generator Backup System SelectionATS vs AMF panel is often explained too simply. An ATS is not just a switch that waits for two already-running power sources, and an AMF panel is not simply a \u201cmore advanced ATS.\u201d They solve different parts of a generator backup system, although some controller functions can overlap. For generator buyers,&#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-31696","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>ATS vs AMF Panel: Generator Backup System Selection Guide<\/title>\n<meta name=\"description\" content=\"Compare ATS vs AMF panel for generator backup systems. 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