{"id":31283,"date":"2026-09-24T09:43:11","date_gmt":"2026-09-24T01:43:11","guid":{"rendered":"https:\/\/www.cnspd.com\/?p=31283"},"modified":"2026-09-24T09:57:34","modified_gmt":"2026-09-24T01:57:34","slug":"ats-time-delay-settings-for-generator-systems-compact-ats-commissioning-guide","status":"publish","type":"post","link":"https:\/\/www.cnspd.com\/th\/ats-time-delay-settings\/","title":{"rendered":"ATS Time Delay Settings for Generator Systems: Compact ATS Commissioning Guide"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"31283\" class=\"elementor elementor-31283\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4078b19 e-flex e-con-boxed e-con e-parent\" data-id=\"4078b19\" 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-69e4648 elementor-widget elementor-widget-html\" data-id=\"69e4648\" 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top:16px;\r\n    left:17px;\r\n  }\r\n\r\n  .leeyee-ats-delay-guide .leeyee-about-btn-light{\r\n    width:100%;\r\n    min-height:50px;\r\n    padding-left:17px;\r\n    padding-right:17px;\r\n  }\r\n}\r\n\r\n@media (max-width:390px){\r\n  .leeyee-ats-delay-guide h2{\r\n    font-size:25px;\r\n  }\r\n\r\n  .leeyee-ats-delay-guide h3{\r\n    font-size:20px;\r\n  }\r\n\r\n  .leeyee-ats-delay-guide .ly-product-scope h2,\r\n  .leeyee-ats-delay-guide .ly-quick h2,\r\n  .leeyee-ats-delay-guide .ly-checklist h2,\r\n  .leeyee-ats-delay-guide .ly-cta h2{\r\n    font-size:24px;\r\n  }\r\n}\r\n<\/style>\r\n\r\n<article class=\"leeyee-ats-delay-guide\">\r\n\r\n  <span class=\"ly-eyebrow\">Generator ATS Commissioning Guide<\/span>\r\n\r\n  <p class=\"ly-intro\">\r\n    Automatic transfer switch (ATS) time delay settings affect when a utility problem becomes a real transfer event,\r\n    when a generator-start sequence begins, when the load can move to the alternate source, when utility power is trusted\r\n    again, and when the generator can stop.\r\n  <\/p>\r\n\r\n  <p>\r\n    For compact utility-generator ATS applications, however, not every timing function is necessarily adjusted directly\r\n    on the transfer switch itself. Some functions may be fixed in the ATS logic, handled by the generator controller,\r\n    or managed by an external control system.\r\n  <\/p>\r\n\r\n  <p>\r\n    This guide therefore explains <strong>system-level ATS timing and commissioning logic<\/strong>.\r\n    It does not assume that every compact ATS provides the same programmable timers as a large programmable transfer-switch controller.\r\n  <\/p>\r\n\r\n  <p>\r\n    IEC 60947-6-1:2026 is the current IEC product standard covering transfer switching equipment, including automatic\r\n    transfer switching equipment and stand-alone ATS controllers.[1] Actual delay functions and ranges vary between\r\n    controller families, so final settings must be confirmed against the installed ATS, generator, load and project sequence.[2][4]\r\n  <\/p>\r\n\r\n  <section class=\"ly-product-scope\">\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\">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-time-delay-settings\/#product-scope-for-this-guide\" >Product Scope for This Guide<\/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-time-delay-settings\/#quick-answer-how-should-ats-time-delays-be-set\" >Quick Answer: How Should ATS Time Delays Be Set?<\/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-time-delay-settings\/#where-does-the-time-delay-actually-come-from\" >Where Does the Time Delay Actually Come From?<\/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-time-delay-settings\/#the-five-timing-stages-to-coordinate-in-a-generator-ats-system\" >The Five Timing Stages to Coordinate in a Generator ATS System<\/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-time-delay-settings\/#ats-time-delay-vs-transfer-switching-time-they-are-not-the-same\" >ATS Time Delay vs Transfer Switching Time: They Are Not the Same<\/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-time-delay-settings\/#1-utility-failure-confirmation\" >1. Utility Failure Confirmation<\/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-time-delay-settings\/#2-generator-running-does-not-automatically-mean-generator-ready\" >2. Generator Running Does Not Automatically Mean Generator Ready<\/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-time-delay-settings\/#3-transfer-to-generator-timing\" >3. Transfer-to-Generator Timing<\/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-time-delay-settings\/#4-utility-recovery-and-retransfer-timing\" >4. Utility Recovery and Retransfer Timing<\/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-time-delay-settings\/#5-generator-cooldown-and-stop-timing\" >5. Generator Cooldown and Stop Timing<\/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-time-delay-settings\/#why-%e2%80%9cstandard-ats-delay-settings%e2%80%9d-are-usually-the-wrong-starting-point\" >Why \u201cStandard ATS Delay Settings\u201d Are Usually the Wrong Starting Point<\/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-time-delay-settings\/#calculate-the-complete-restoration-time-not-just-one-ats-number\" >Calculate the Complete Restoration Time, Not Just One ATS Number<\/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-time-delay-settings\/#check-for-delay-stacking-between-the-ats-and-generator-controller\" >Check for Delay Stacking Between the ATS and Generator Controller<\/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-time-delay-settings\/#ats-delay-troubleshooting-match-the-symptom-to-the-system-stage\" >ATS Delay Troubleshooting: Match the Symptom to the System Stage<\/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-time-delay-settings\/#how-to-commission-timing-in-a-compact-generator-ats-system\" >How to Commission Timing in a Compact Generator ATS System<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/th\/ats-time-delay-settings\/#what-buyers-should-confirm-for-a-leeyee-compact-generator-ats-project\" >What Buyers Should Confirm for a LEEYEE Compact Generator ATS Project<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/th\/ats-time-delay-settings\/#before-ordering-or-model-confirmation\" >Before Ordering or Model Confirmation<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/th\/ats-time-delay-settings\/#need-to-confirm-a-compact-ats-for-a-generator-system\" >Need to Confirm a Compact ATS for a Generator System?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/th\/ats-time-delay-settings\/#faq-ats-time-delay-settings-for-compact-generator-systems\" >FAQ: ATS Time Delay Settings for Compact Generator Systems<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/th\/ats-time-delay-settings\/#references\" >References<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"product-scope-for-this-guide\"><\/span>Product Scope for This Guide<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n    <p>\r\n      LEEYEE's standard ATS offering for this application is a compact integrated transfer switch used between normal\r\n      and alternate power sources. The product family includes compact 2P and 4P configurations for different system requirements.\r\n    <\/p>\r\n\r\n    <ul>\r\n      <li>This article applies to <strong>utility-generator transfer system planning and commissioning<\/strong>.<\/li>\r\n      <li>It does not imply that every delay described below is independently adjustable on the compact ATS itself.<\/li>\r\n      <li>Where a project requires programmable start, transfer, retransfer or cooldown logic, confirm whether that function is provided by the selected ATS, the generator controller or an external controller.<\/li>\r\n      <li>LEEYEE's standard compact ATS application is based on open-transition source transfer; advanced closed-transition or bypass functions require separate engineering confirmation.<\/li>\r\n    <\/ul>\r\n  <\/section>\r\n\r\n  <section class=\"ly-quick\">\r\n    <h2><span class=\"ez-toc-section\" id=\"quick-answer-how-should-ats-time-delays-be-set\"><\/span>Quick Answer: How Should ATS Time Delays Be Set?<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n    <p>\r\n      First identify <strong>where each timing function is implemented<\/strong>.\r\n      Then use each delay to prove one condition before the system moves to the next step.\r\n      The utility-failure delay should avoid reacting unnecessarily to short disturbances.\r\n      The generator-transfer sequence should wait until the alternate source is acceptable.\r\n      The retransfer delay should confirm that normal power has recovered reliably.\r\n      The cooldown period should follow the intended generator shutdown sequence.[2][3]\r\n    <\/p>\r\n\r\n    <p>\r\n      <strong>Do not copy one group of \u201cstandard ATS delay settings\u201d from another project.<\/strong>\r\n      Current manufacturer documentation shows different timer ranges, defaults and control logic between ATS families.[2][4]\r\n    <\/p>\r\n  <\/section>\r\n\r\n  <figure class=\"ly-figure\">\r\n    <img fetchpriority=\"high\"\r\n      src=\"https:\/\/www.cnspd.com\/wp-content\/uploads\/2026\/09\/ats-generator-time-delay-sequence.webp\"\r\n      alt=\"ATS generator time delay sequence from utility failure to generator cooldown\"\r\n      width=\"1448\"\r\n      height=\"1086\"\r\n      decoding=\"async\"\r\n      fetchpriority=\"high\">\r\n    <figcaption>\r\n      Figure 1. Functional generator-transfer sequence from utility failure to generator cooldown.\r\n      The diagram explains the complete system sequence; an individual compact ATS may not provide every timer as a user-adjustable setting.\r\n    <\/figcaption>\r\n  <\/figure>\r\n\r\n  <h2><span class=\"ez-toc-section\" id=\"where-does-the-time-delay-actually-come-from\"><\/span>Where Does the Time Delay Actually Come From?<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n  <p>\r\n    In a generator backup system, timing can be distributed across several devices.\r\n    This is especially important when a compact ATS is integrated with a separate generator controller.\r\n  <\/p>\r\n\r\n  <div class=\"ly-table-wrap\">\r\n    <table aria-label=\"Where ATS generator timing functions may be implemented\">\r\n      <colgroup>\r\n        <col style=\"width:29%;\">\r\n        <col style=\"width:31%;\">\r\n        <col style=\"width:40%;\">\r\n      <\/colgroup>\r\n      <thead>\r\n        <tr>\r\n          <th>Timing Function<\/th>\r\n          <th>May Be Handled By<\/th>\r\n          <th>What the Buyer Should Confirm<\/th>\r\n        <\/tr>\r\n      <\/thead>\r\n      <tbody>\r\n        <tr>\r\n          <td data-label=\"Timing Function\"><strong>Utility failure confirmation<\/strong><\/td>\r\n          <td data-label=\"May Be Handled By\">ATS sensing\/control logic or external controller<\/td>\r\n          <td data-label=\"What the Buyer Should Confirm\">Whether the delay is fixed, adjustable or managed outside the ATS<\/td>\r\n        <\/tr>\r\n        <tr>\r\n          <td data-label=\"Timing Function\"><strong>Generator start delay<\/strong><\/td>\r\n          <td data-label=\"May Be Handled By\">ATS controller, generator controller or external control logic<\/td>\r\n          <td data-label=\"What the Buyer Should Confirm\">Which device actually initiates the generator-start sequence<\/td>\r\n        <\/tr>\r\n        <tr>\r\n          <td data-label=\"Timing Function\"><strong>Generator source qualification<\/strong><\/td>\r\n          <td data-label=\"May Be Handled By\">ATS sensing logic and\/or generator control system<\/td>\r\n          <td data-label=\"What the Buyer Should Confirm\">How acceptable voltage and frequency are determined for the project<\/td>\r\n        <\/tr>\r\n        <tr>\r\n          <td data-label=\"Timing Function\"><strong>Retransfer delay<\/strong><\/td>\r\n          <td data-label=\"May Be Handled By\">ATS controller or external automation logic<\/td>\r\n          <td data-label=\"What the Buyer Should Confirm\">Whether auto-return is required and how normal-source stability is confirmed<\/td>\r\n        <\/tr>\r\n        <tr>\r\n          <td data-label=\"Timing Function\"><strong>Generator cooldown<\/strong><\/td>\r\n          <td data-label=\"May Be Handled By\">Generator controller, ATS controller or external control logic<\/td>\r\n          <td data-label=\"What the Buyer Should Confirm\">Which device owns the stop command and cooldown sequence<\/td>\r\n        <\/tr>\r\n      <\/tbody>\r\n    <\/table>\r\n  <\/div>\r\n\r\n  <div class=\"ly-engineering\">\r\n    <span class=\"ly-callout-title\">For compact ATS projects, this distinction is critical.<\/span>\r\n    <p>\r\n      The ATS may be the device that transfers the load, while the generator controller handles part of the engine start\r\n      and shutdown sequence. Always confirm the complete control architecture instead of assuming every timer belongs to the ATS.\r\n    <\/p>\r\n  <\/div>\r\n\r\n  <h2><span class=\"ez-toc-section\" id=\"the-five-timing-stages-to-coordinate-in-a-generator-ats-system\"><\/span>The Five Timing Stages to Coordinate in a Generator ATS System<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n  <p>\r\n    These are the main system timing stages that usually need to be understood during generator ATS commissioning.\r\n    They are <strong>system functions<\/strong>, not a promise that all five appear as adjustable menus on every compact ATS.\r\n  <\/p>\r\n\r\n  <p class=\"ly-table-intro\">\r\n    The most useful question is \u201cWhat condition must be confirmed before the system moves to the next stage?\u201d\r\n  <\/p>\r\n\r\n  <div class=\"ly-table-wrap\">\r\n    <table aria-label=\"Main ATS generator timing stages\">\r\n      <colgroup>\r\n        <col style=\"width:27%;\">\r\n        <col style=\"width:34%;\">\r\n        <col style=\"width:39%;\">\r\n      <\/colgroup>\r\n      <thead>\r\n        <tr>\r\n          <th>Timing Stage<\/th>\r\n          <th>What It Confirms<\/th>\r\n          <th>Main Risk If Incorrect<\/th>\r\n        <\/tr>\r\n      <\/thead>\r\n      <tbody>\r\n        <tr>\r\n          <td data-label=\"Timing Stage\"><strong>Utility failure confirmation<\/strong><\/td>\r\n          <td data-label=\"What It Confirms\">The normal-source problem persists long enough to begin the backup sequence<\/td>\r\n          <td data-label=\"Main Risk If Incorrect\">Unnecessary generator starts or unnecessarily slow response<\/td>\r\n        <\/tr>\r\n        <tr>\r\n          <td data-label=\"Timing Stage\"><strong>Generator start and source qualification<\/strong><\/td>\r\n          <td data-label=\"What It Confirms\">The generator is started and the alternate electrical source becomes acceptable<\/td>\r\n          <td data-label=\"Main Risk If Incorrect\">Attempting transfer before the alternate source is ready<\/td>\r\n        <\/tr>\r\n        <tr>\r\n          <td data-label=\"Timing Stage\"><strong>Transfer to generator<\/strong><\/td>\r\n          <td data-label=\"What It Confirms\">The transfer sequence can proceed to the alternate source<\/td>\r\n          <td data-label=\"Main Risk If Incorrect\">Premature transfer or an unnecessarily long outage<\/td>\r\n        <\/tr>\r\n        <tr>\r\n          <td data-label=\"Timing Stage\"><strong>Utility return \/ retransfer<\/strong><\/td>\r\n          <td data-label=\"What It Confirms\">Normal power has recovered and remains acceptable<\/td>\r\n          <td data-label=\"Main Risk If Incorrect\">Premature return to an unstable source or unnecessary generator runtime<\/td>\r\n        <\/tr>\r\n        <tr>\r\n          <td data-label=\"Timing Stage\"><strong>Generator cooldown \/ stop<\/strong><\/td>\r\n          <td data-label=\"What It Confirms\">The load has returned to normal power before the generator stop sequence completes<\/td>\r\n          <td data-label=\"Main Risk If Incorrect\">Unsuitable shutdown coordination or excessive unloaded running<\/td>\r\n        <\/tr>\r\n      <\/tbody>\r\n    <\/table>\r\n  <\/div>\r\n\r\n  <h2><span class=\"ez-toc-section\" id=\"ats-time-delay-vs-transfer-switching-time-they-are-not-the-same\"><\/span>ATS Time Delay vs Transfer Switching Time: They Are Not the Same<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n  <p>\r\n    <strong>ATS time delay<\/strong> is an intentional control waiting period before a particular system action.\r\n    Examples include waiting before generator start, before retransfer to utility, or before generator shutdown.\r\n  <\/p>\r\n\r\n  <p>\r\n    <strong>Transfer switching time<\/strong> is the switching interval associated with changing the connected source\r\n    after the transfer logic permits the operation.\r\n  <\/p>\r\n\r\n  <div class=\"ly-distinction\">\r\n    <div class=\"ly-distinction-card\">\r\n      <h3>ATS \/ System Time Delay<\/h3>\r\n      <p>\r\n        An intentional control period used to confirm source conditions or coordinate the generator sequence.\r\n        Depending on the design, it may exist in the ATS, generator controller or external automation.\r\n      <\/p>\r\n    <\/div>\r\n\r\n    <div class=\"ly-distinction-card\">\r\n      <h3>Transfer Switching Time<\/h3>\r\n      <p>\r\n        The switching interval after the control system permits a source change.\r\n        It does not automatically include generator crank time, source qualification or other intentional delays.\r\n      <\/p>\r\n    <\/div>\r\n  <\/div>\r\n\r\n  <div class=\"ly-note\">\r\n    <span class=\"ly-callout-title\">Why this distinction matters for compact ATS products<\/span>\r\n    <p>\r\n      A compact ATS can have a fast switching mechanism while the complete utility-to-generator restoration process still\r\n      takes longer because the generator must start and become electrically acceptable first.\r\n    <\/p>\r\n  <\/div>\r\n\r\n  <div class=\"ly-related\">\r\n    <strong>Related ATS fundamentals<\/strong>\r\n    <span>\r\n      For the overall source-transfer principle, ATS selection logic and product-level switching discussion, see\r\n      <a href=\"https:\/\/www.cnspd.com\/what-is-an-automatic-transfer-switch-how-ats-works-how-to-choose\/\">\r\n        how an automatic transfer switch works and how to choose an ATS\r\n      <\/a>.\r\n    <\/span>\r\n  <\/div>\r\n\r\n  <h2><span class=\"ez-toc-section\" id=\"1-utility-failure-confirmation\"><\/span>1. Utility Failure Confirmation<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n  <div class=\"ly-timer\">\r\n    <span class=\"ly-timer-tag\">Normal source failure<\/span>\r\n\r\n    <p>\r\n      A generator backup system should distinguish between a genuine source failure and a short disturbance that does not\r\n      justify a full transfer sequence.\r\n    <\/p>\r\n\r\n    <p>\r\n      In highly programmable ATS platforms, this may appear as an adjustable generator-start or source-failure timer.\r\n      In a compact ATS system, the same function may be fixed in the ATS logic or handled elsewhere in the control architecture.\r\n    <\/p>\r\n\r\n    <p>\r\n      Schneider TransferPacT Active Automatic provides one example of a programmable architecture:\r\n      its <strong>T7 Genset Start Delay<\/strong> is adjustable from 0 to 120 seconds with a 3-second default.[2]\r\n      This is a reference example only and does not imply that a LEEYEE compact ATS uses the same timer or adjustment range.\r\n    <\/p>\r\n\r\n    <div class=\"ly-meaning\">\r\n      <strong>Engineering meaning:<\/strong> if a generator starts during very short utility disturbances, first identify\r\n      which device detects the source failure and which device initiates the generator sequence.\r\n    <\/div>\r\n  <\/div>\r\n\r\n  <h2><span class=\"ez-toc-section\" id=\"2-generator-running-does-not-automatically-mean-generator-ready\"><\/span>2. Generator Running Does Not Automatically Mean Generator Ready<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n  <p>\r\n    A running engine and an acceptable alternate electrical source are not the same condition.\r\n    The generator still needs to establish voltage and frequency suitable for the intended system before the load is transferred.\r\n  <\/p>\r\n\r\n  <p>\r\n    Some programmable ATS controllers monitor target-source voltage and frequency during their transfer logic.\r\n    Schneider documents this type of source measurement within its T2 transfer sequence.[2]\r\n  <\/p>\r\n\r\n  <div class=\"ly-engineering\">\r\n    <span class=\"ly-callout-title\">Keep two commissioning timestamps separate.<\/span>\r\n    <p>\r\n      Record when the generator starts running and when the alternate source becomes electrically acceptable.\r\n      Do not assume those events occur at the same moment.\r\n    <\/p>\r\n  <\/div>\r\n\r\n  <p>\r\n    If the generator is already running but the load has not transferred, check source qualification, the selected ATS logic,\r\n    generator controls and any external permissive conditions before assuming that the switching mechanism is faulty.\r\n  <\/p>\r\n\r\n  <h2><span class=\"ez-toc-section\" id=\"3-transfer-to-generator-timing\"><\/span>3. Transfer-to-Generator Timing<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n  <p>\r\n    Once the alternate source is acceptable, the transfer system determines when the load can move from the normal source\r\n    to the generator source.\r\n  <\/p>\r\n\r\n  <p>\r\n    On a programmable controller, this may include an adjustable confirmation or transfer delay.\r\n    Schneider TransferPacT Active Automatic, for example, lists T2 Transfer Delay from 0 to 1800 seconds with a 3-second default.[2]\r\n  <\/p>\r\n\r\n  <div class=\"ly-warning\">\r\n    <span class=\"ly-callout-title\">Manufacturer examples are not LEEYEE product specifications.<\/span>\r\n    <p>\r\n      Schneider, Cummins and other controller examples in this article are included to explain industry timing logic.\r\n      They do not mean that the LEEYEE compact ATS provides the same menus, timer ranges or programmable functions.\r\n      Confirm the selected LEEYEE model and project control requirements before ordering.\r\n    <\/p>\r\n  <\/div>\r\n\r\n  <div class=\"ly-two-col\">\r\n    <div class=\"ly-mini\">\r\n      <h3>If the system transfers too early<\/h3>\r\n      <p>\r\n        Confirm whether the generator source has actually satisfied the required electrical acceptance conditions.\r\n        Do not compensate for unstable generator output only by changing ATS timing.\r\n      <\/p>\r\n    <\/div>\r\n\r\n    <div class=\"ly-mini\">\r\n      <h3>If the system transfers too late<\/h3>\r\n      <p>\r\n        Measure where the elapsed time is being consumed.\r\n        The delay may come from generator starting, source qualification, ATS logic or an external controller.\r\n      <\/p>\r\n    <\/div>\r\n  <\/div>\r\n\r\n  <h2><span class=\"ez-toc-section\" id=\"4-utility-recovery-and-retransfer-timing\"><\/span>4. Utility Recovery and Retransfer Timing<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n  <p>\r\n    Utility voltage appearing again does not always mean the load should immediately return to normal power.\r\n    A system may intentionally confirm that utility power remains acceptable before retransfer.\r\n  <\/p>\r\n\r\n  <p>\r\n    In Schneider TransferPacT Active Automatic, T6 is used as a retransfer delay and can be cancelled if the normal source\r\n    becomes abnormal again during the confirmation period.[2][3]\r\n  <\/p>\r\n\r\n  <p>\r\n    This type of programmable logic is useful as an engineering reference.\r\n    For a compact ATS project, confirm whether retransfer timing is fixed, adjustable or managed by another controller.\r\n  <\/p>\r\n\r\n  <div class=\"ly-meaning\">\r\n    <strong>Buyer meaning:<\/strong> if your project specifically requires an adjustable utility-return delay,\r\n    state that requirement before model confirmation instead of assuming it is available on every compact ATS.\r\n  <\/div>\r\n\r\n  <h2><span class=\"ez-toc-section\" id=\"5-generator-cooldown-and-stop-timing\"><\/span>5. Generator Cooldown and Stop Timing<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n  <p>\r\n    After the load returns to normal power, many generator systems continue to run the generator unloaded before the stop\r\n    command is completed.\r\n  <\/p>\r\n\r\n  <p>\r\n    The cooldown function may belong to the generator controller, ATS controller or another part of the system logic.\r\n    Therefore, a buyer should not assume that generator cooldown is necessarily programmed inside the compact transfer switch.\r\n  <\/p>\r\n\r\n  <p>\r\n    As a programmable-controller example, TransferPacT Active Automatic lists T9 Genset Cool Delay from 0 to 3600 seconds\r\n    with a 60-second default.[2]\r\n  <\/p>\r\n\r\n  <p>\r\n    ASCO Series 165 provides another product-specific example: its published generator test sequence includes\r\n    one minute of unloaded generator operation after retransfer.[5]\r\n  <\/p>\r\n\r\n  <div class=\"ly-note\">\r\n    <span class=\"ly-callout-title\">Use those values only as examples of controller behaviour.<\/span>\r\n    <p>\r\n      The final generator stop and cooldown sequence must follow the installed generator requirements,\r\n      actual controller architecture and approved project sequence.\r\n    <\/p>\r\n  <\/div>\r\n\r\n  <h2><span class=\"ez-toc-section\" id=\"why-%e2%80%9cstandard-ats-delay-settings%e2%80%9d-are-usually-the-wrong-starting-point\"><\/span>Why \u201cStandard ATS Delay Settings\u201d Are Usually the Wrong Starting Point<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n  <p>\r\n    Real ATS controller families use different timer structures and ranges.\r\n    That is why a value found in another manufacturer's manual should not automatically become the setting for a different system.[2][4]\r\n  <\/p>\r\n\r\n  <figure class=\"ly-figure\">\r\n    <img loading=\"lazy\"\r\n      src=\"https:\/\/www.cnspd.com\/wp-content\/uploads\/2026\/09\/ats-delay-too-short-vs-too-long.webp\"\r\n      alt=\"Comparison of ATS time delay settings that are too short, appropriate, or too long\"\r\n      width=\"1448\"\r\n      height=\"1086\"\r\n      loading=\"lazy\"\r\n      decoding=\"async\">\r\n    <figcaption>\r\n      Figure 2. Correct timing is a system coordination problem. A delay that is too short can allow premature operation,\r\n      while an unnecessarily long delay can extend restoration or generator runtime.\r\n    <\/figcaption>\r\n  <\/figure>\r\n\r\n  <p class=\"ly-table-intro\">\r\n    The examples below show why programmable-controller values cannot be treated as a universal ATS setting table.\r\n  <\/p>\r\n\r\n  <div class=\"ly-table-wrap\">\r\n    <table aria-label=\"Examples of programmable ATS time delay ranges\">\r\n      <colgroup>\r\n        <col style=\"width:25%;\">\r\n        <col style=\"width:37.5%;\">\r\n        <col style=\"width:37.5%;\">\r\n      <\/colgroup>\r\n      <thead>\r\n        <tr>\r\n          <th>Function<\/th>\r\n          <th>Schneider TransferPacT Active Automatic<\/th>\r\n          <th>What This Means for a Compact ATS Buyer<\/th>\r\n        <\/tr>\r\n      <\/thead>\r\n      <tbody>\r\n        <tr>\r\n          <td data-label=\"Function\"><strong>Generator start<\/strong><\/td>\r\n          <td data-label=\"Schneider Example\">T7: 0\u2013120 s; default 3 s<\/td>\r\n          <td data-label=\"Compact ATS Buyer\">Confirm whether the selected system provides adjustable start timing or uses another controller<\/td>\r\n        <\/tr>\r\n        <tr>\r\n          <td data-label=\"Function\"><strong>Transfer<\/strong><\/td>\r\n          <td data-label=\"Schneider Example\">T2: 0\u20131800 s; default 3 s<\/td>\r\n          <td data-label=\"Compact ATS Buyer\">Do not assume the compact ATS offers the same programmable transfer range<\/td>\r\n        <\/tr>\r\n        <tr>\r\n          <td data-label=\"Function\"><strong>Retransfer<\/strong><\/td>\r\n          <td data-label=\"Schneider Example\">T6: 0\u20133600 s; default 60 s<\/td>\r\n          <td data-label=\"Compact ATS Buyer\">Specify adjustable return timing if the project requires it<\/td>\r\n        <\/tr>\r\n        <tr>\r\n          <td data-label=\"Function\"><strong>Generator cooldown<\/strong><\/td>\r\n          <td data-label=\"Schneider Example\">T9: 0\u20133600 s; default 60 s<\/td>\r\n          <td data-label=\"Compact ATS Buyer\">Confirm whether cooldown belongs to the generator controller or transfer-control system<\/td>\r\n        <\/tr>\r\n      <\/tbody>\r\n    <\/table>\r\n  <\/div>\r\n\r\n  <p class=\"ly-table-note\">\r\n    Source: Schneider Electric TransferPacT documentation [2].\r\n    These values describe a programmable controller platform and are included for comparison only.\r\n  <\/p>\r\n\r\n  <h2><span class=\"ez-toc-section\" id=\"calculate-the-complete-restoration-time-not-just-one-ats-number\"><\/span>Calculate the Complete Restoration Time, Not Just One ATS Number<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n  <p>\r\n    A generator-backed system can take longer to restore power than the mechanical switching time of the ATS.\r\n    The load experiences the complete source-failure and generator-start sequence.\r\n  <\/p>\r\n\r\n  <div class=\"ly-formula\">\r\n    <strong>Simplified outage-to-backup timing map<\/strong>\r\n\r\n    <div class=\"ly-formula-line\">\r\n      Source failure detection\r\n      + intentional control delay\r\n      + generator crank\/start time\r\n      + source qualification time\r\n      + transfer-control delay\r\n      + switching time\r\n      = approximate outage-to-backup restoration time\r\n    <\/div>\r\n\r\n    <p>\r\n      Not every system implements these stages as separate timers.\r\n      Some functions can overlap, be fixed, reset or be controlled by different devices.\r\n      Confirm the installed architecture before calculating the final timing budget.\r\n    <\/p>\r\n  <\/div>\r\n\r\n  <h2><span class=\"ez-toc-section\" id=\"check-for-delay-stacking-between-the-ats-and-generator-controller\"><\/span>Check for Delay Stacking Between the ATS and Generator Controller<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n  <p>\r\n    A compact ATS installation can still contain several controllers.\r\n    The transfer switch may handle source transfer while the generator controller handles engine-start or shutdown logic.\r\n  <\/p>\r\n\r\n  <p>\r\n    If both systems intentionally delay the same event, the total response can become longer than expected.\r\n    This is why commissioning should record real timestamps rather than only reading one timer value from one device.\r\n  <\/p>\r\n\r\n  <div class=\"ly-warning\">\r\n    <span class=\"ly-callout-title\">Example<\/span>\r\n    <p>\r\n      If a start command is issued promptly but the engine begins later, investigate the generator-control sequence.\r\n      If the start command itself is late, investigate the source-failure and ATS control logic.\r\n    <\/p>\r\n  <\/div>\r\n\r\n  <h2><span class=\"ez-toc-section\" id=\"ats-delay-troubleshooting-match-the-symptom-to-the-system-stage\"><\/span>ATS Delay Troubleshooting: Match the Symptom to the System Stage<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n  <div class=\"ly-table-wrap\">\r\n    <table aria-label=\"ATS generator timing troubleshooting\">\r\n      <colgroup>\r\n        <col style=\"width:39%;\">\r\n        <col style=\"width:61%;\">\r\n      <\/colgroup>\r\n      <thead>\r\n        <tr>\r\n          <th>Observed Symptom<\/th>\r\n          <th>Check First<\/th>\r\n        <\/tr>\r\n      <\/thead>\r\n      <tbody>\r\n        <tr>\r\n          <td data-label=\"Observed Symptom\"><strong>Generator starts during very short utility disturbances<\/strong><\/td>\r\n          <td data-label=\"Check First\">Source sensing, failure-confirmation logic and which controller initiates the start sequence<\/td>\r\n        <\/tr>\r\n        <tr>\r\n          <td data-label=\"Observed Symptom\"><strong>Generator starts much later than expected<\/strong><\/td>\r\n          <td data-label=\"Check First\">ATS logic, generator-controller timing and any external PLC or control delay<\/td>\r\n        <\/tr>\r\n        <tr>\r\n          <td data-label=\"Observed Symptom\"><strong>Generator is running but the load does not transfer<\/strong><\/td>\r\n          <td data-label=\"Check First\">Alternate-source qualification, ATS transfer logic, permissive conditions and alarms<\/td>\r\n        <\/tr>\r\n        <tr>\r\n          <td data-label=\"Observed Symptom\"><strong>ATS returns to utility and then transfers away again<\/strong><\/td>\r\n          <td data-label=\"Check First\">Utility stability, source sensing and the system's retransfer-confirmation logic<\/td>\r\n        <\/tr>\r\n        <tr>\r\n          <td data-label=\"Observed Symptom\"><strong>Utility is stable but the system remains on generator too long<\/strong><\/td>\r\n          <td data-label=\"Check First\">Return mode, retransfer timing and which controller owns the return sequence<\/td>\r\n        <\/tr>\r\n        <tr>\r\n          <td data-label=\"Observed Symptom\"><strong>Generator stops immediately after retransfer<\/strong><\/td>\r\n          <td data-label=\"Check First\">Generator-controller cooldown logic and any stop-delay function in the control system<\/td>\r\n        <\/tr>\r\n        <tr>\r\n          <td data-label=\"Observed Symptom\"><strong>Total restoration time is longer than expected<\/strong><\/td>\r\n          <td data-label=\"Check First\">Timestamp the entire system sequence instead of inspecting only the ATS switching time<\/td>\r\n        <\/tr>\r\n      <\/tbody>\r\n    <\/table>\r\n  <\/div>\r\n\r\n  <h2><span class=\"ez-toc-section\" id=\"how-to-commission-timing-in-a-compact-generator-ats-system\"><\/span>How to Commission Timing in a Compact Generator ATS System<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n  <p>\r\n    Do not begin by changing every available timer.\r\n    First establish which device controls each event, then measure the actual sequence experienced by the load.\r\n  <\/p>\r\n\r\n  <figure class=\"ly-figure\">\r\n    <img loading=\"lazy\"\r\n      src=\"https:\/\/www.cnspd.com\/wp-content\/uploads\/2026\/09\/ats-generator-commissioning-timeline.webp\"\r\n      alt=\"ATS generator commissioning timeline for testing time delay settings\"\r\n      width=\"1448\"\r\n      height=\"1086\"\r\n      loading=\"lazy\"\r\n      decoding=\"async\">\r\n    <figcaption>\r\n      Figure 3. Record system events as timestamps: utility failure, start command, generator acceptance, load transfer,\r\n      utility recovery, retransfer and generator stop.\r\n    <\/figcaption>\r\n  <\/figure>\r\n\r\n  <div class=\"ly-steps\">\r\n    <div class=\"ly-step\">\r\n      <strong>Identify the control architecture.<\/strong>\r\n      Determine what the compact ATS controls directly and what is handled by the generator controller or external automation.\r\n    <\/div>\r\n\r\n    <div class=\"ly-step\">\r\n      <strong>Record existing ATS and generator-controller settings.<\/strong>\r\n      Save available source-sensing, operating-mode and timing information before making changes.\r\n    <\/div>\r\n\r\n    <div class=\"ly-step\">\r\n      <strong>Confirm the project sequence.<\/strong>\r\n      Define the intended utility-failure response, generator-start behaviour, source-transfer mode, return logic and shutdown sequence.\r\n    <\/div>\r\n\r\n    <div class=\"ly-step\">\r\n      <strong>Verify source-sensing conditions.<\/strong>\r\n      A timing complaint can actually be caused by incorrect voltage or frequency qualification rather than the delay itself.\r\n    <\/div>\r\n\r\n    <div class=\"ly-step\">\r\n      <strong>Record the utility-failure event and generator-start command.<\/strong>\r\n      This separates ATS response time from generator-controller response time.\r\n    <\/div>\r\n\r\n    <div class=\"ly-step\">\r\n      <strong>Record when the generator becomes electrically acceptable.<\/strong>\r\n      Do not treat engine running as the same event as generator source ready.\r\n    <\/div>\r\n\r\n    <div class=\"ly-step\">\r\n      <strong>Measure actual load transfer.<\/strong>\r\n      Record the complete time from loss of acceptable utility power until the load is supplied by the alternate source.\r\n    <\/div>\r\n\r\n    <div class=\"ly-step\">\r\n      <strong>Restore utility and verify the return sequence.<\/strong>\r\n      Confirm which device determines that normal power is acceptable and when the load is allowed to return.\r\n    <\/div>\r\n\r\n    <div class=\"ly-step\">\r\n      <strong>Verify generator shutdown.<\/strong>\r\n      Confirm the intended cooldown or stop sequence in the generator\/control documentation.\r\n    <\/div>\r\n\r\n    <div class=\"ly-step\">\r\n      <strong>Save final as-left settings and timestamps.<\/strong>\r\n      This gives maintenance teams a usable baseline for future diagnosis.\r\n    <\/div>\r\n  <\/div>\r\n\r\n  <div class=\"ly-engineering\">\r\n    <span class=\"ly-callout-title\">Commissioning safety boundary<\/span>\r\n    <p>\r\n      Loss-of-source and transfer testing must follow the site's approved electrical safety and commissioning procedure.\r\n      The installed ATS instructions, generator instructions and project design govern the actual test method.\r\n    <\/p>\r\n  <\/div>\r\n\r\n  <h2><span class=\"ez-toc-section\" id=\"what-buyers-should-confirm-for-a-leeyee-compact-generator-ats-project\"><\/span>What Buyers Should Confirm for a LEEYEE Compact Generator ATS Project<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n  <p>\r\n    For a compact ATS, do not copy a specification checklist intended for a large programmable transfer-switch controller.\r\n    Start with the actual transfer requirement, then identify which timing functions the project needs.\r\n  <\/p>\r\n\r\n  <section class=\"ly-checklist\">\r\n    <h2><span class=\"ez-toc-section\" id=\"before-ordering-or-model-confirmation\"><\/span>Before Ordering or Model Confirmation<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n    <div class=\"ly-check-grid\">\r\n      <div class=\"ly-check-item\">System voltage and frequency<\/div>\r\n      <div class=\"ly-check-item\">Single-phase or three-phase system<\/div>\r\n      <div class=\"ly-check-item\">Required 2P or 4P configuration<\/div>\r\n      <div class=\"ly-check-item\">Rated current<\/div>\r\n      <div class=\"ly-check-item\">Normal source and alternate source type<\/div>\r\n      <div class=\"ly-check-item\">Utility-generator application or another source combination<\/div>\r\n      <div class=\"ly-check-item\">Required automatic\/manual operating mode<\/div>\r\n      <div class=\"ly-check-item\">Required source-sensing functions<\/div>\r\n      <div class=\"ly-check-item\">Whether adjustable generator-start delay is required<\/div>\r\n      <div class=\"ly-check-item\">Whether adjustable transfer delay is required<\/div>\r\n      <div class=\"ly-check-item\">Whether adjustable retransfer delay is required<\/div>\r\n      <div class=\"ly-check-item\">Whether cooldown is handled by the generator controller<\/div>\r\n      <div class=\"ly-check-item\">Generator-start signal\/interface requirement, if applicable<\/div>\r\n      <div class=\"ly-check-item\">External PLC\/BMS integration requirement, if applicable<\/div>\r\n      <div class=\"ly-check-item\">Required standard or project documentation<\/div>\r\n      <div class=\"ly-check-item\">OEM label or packaging requirement<\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <div class=\"ly-warning\">\r\n    <span class=\"ly-callout-title\">Specify programmable timing requirements before ordering.<\/span>\r\n    <p>\r\n      If the project requires independently adjustable start, transfer, retransfer or cooldown timers,\r\n      send those requirements with the enquiry. Do not assume that every compact ATS includes the same programmable\r\n      functions as the high-end controller examples used in this article.\r\n    <\/p>\r\n  <\/div>\r\n\r\n  <section class=\"ly-cta\">\r\n    <h2><span class=\"ez-toc-section\" id=\"need-to-confirm-a-compact-ats-for-a-generator-system\"><\/span>Need to Confirm a Compact ATS for a Generator System?<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n    <p>\r\n      Send your system voltage, rated current, 2P\/4P requirement, generator information, load type and required operating sequence.\r\n      LEEYEE can confirm the suitable compact ATS configuration and identify any timing or control requirements that need\r\n      separate project verification.\r\n    <\/p>\r\n\r\n    <button type=\"button\"\r\n            class=\"leeyee-about-btn-light leeyee-site-popup-btn\"\r\n            aria-label=\"Request ATS Configuration Review\">\r\n      <span class=\"w-btn-label\">Request ATS Configuration Review<\/span>\r\n    <\/button>\r\n  <\/section>\r\n\r\n  <h2><span class=\"ez-toc-section\" id=\"faq-ats-time-delay-settings-for-compact-generator-systems\"><\/span>FAQ: ATS Time Delay Settings for Compact Generator Systems<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n  <div class=\"ly-faq\">\r\n\r\n    <details>\r\n      <summary>Does every compact ATS have adjustable generator start, transfer, retransfer and cooldown timers?<\/summary>\r\n      <p>\r\n        No. Timer availability depends on the ATS and system architecture.\r\n        Some timing may be fixed in the ATS, some may be adjustable, and some may be handled by the generator controller\r\n        or an external control system. Confirm the selected model before ordering.\r\n      <\/p>\r\n    <\/details>\r\n\r\n    <details>\r\n      <summary>What are typical ATS time delay settings for a generator?<\/summary>\r\n      <p>\r\n        There is no universal group of settings that should be copied into every project.\r\n        Manufacturer documentation shows different timer structures, ranges and defaults between programmable ATS families.[2][4]\r\n        The final sequence must match the installed equipment and project requirement.\r\n      <\/p>\r\n    <\/details>\r\n\r\n    <details>\r\n      <summary>Is ATS time delay the same as ATS transfer switching time?<\/summary>\r\n      <p>\r\n        No. Time delay is an intentional control waiting period.\r\n        Transfer switching time is associated with the source-change operation after the control system permits transfer.\r\n        Generator starting and source qualification can add significant time before switching occurs.\r\n      <\/p>\r\n    <\/details>\r\n\r\n    <details>\r\n      <summary>Should the ATS transfer as soon as the generator engine starts?<\/summary>\r\n      <p>\r\n        Not simply because the engine is running.\r\n        The alternate electrical source must become acceptable for the intended system before the load is transferred.\r\n      <\/p>\r\n    <\/details>\r\n\r\n    <details>\r\n      <summary>Why is the generator running but the ATS has not transferred?<\/summary>\r\n      <p>\r\n        Check generator voltage\/frequency condition, source qualification, ATS operating logic, external permissives\r\n        and any active timing function. The delay may not be caused by the switching mechanism itself.\r\n      <\/p>\r\n    <\/details>\r\n\r\n    <details>\r\n      <summary>Who controls generator cooldown in a compact ATS system?<\/summary>\r\n      <p>\r\n        It depends on the system design. The generator controller often participates in the engine stop sequence,\r\n        while some programmable ATS systems also provide cooldown timing. Confirm which device owns the stop logic for the project.\r\n      <\/p>\r\n    <\/details>\r\n\r\n    <details>\r\n      <summary>Why is the actual outage longer than the ATS switching time?<\/summary>\r\n      <p>\r\n        Because switching time is only one part of a generator backup sequence.\r\n        Source-failure detection, intentional delays, generator crank time and source qualification can occur before the\r\n        ATS changes source.\r\n      <\/p>\r\n    <\/details>\r\n\r\n    <details>\r\n      <summary>What information should I send LEEYEE before ordering a generator ATS?<\/summary>\r\n      <p>\r\n        Send the system voltage and frequency, rated current, required 2P\/4P configuration, generator information,\r\n        load type, required operating sequence and any specific timing or control requirements.\r\n      <\/p>\r\n    <\/details>\r\n\r\n  <\/div>\r\n\r\n  <section class=\"ly-references\">\r\n    <h2><span class=\"ez-toc-section\" id=\"references\"><\/span>References<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n    <p>\r\n      The programmable-controller values below are included as traceable industry examples.\r\n      They must not be interpreted as specifications for the LEEYEE compact ATS unless confirmed for the selected model.\r\n    <\/p>\r\n\r\n    <ol>\r\n      <li>\r\n        IEC.\r\n        <em>IEC 60947-6-1:2026 \u2014 Low-voltage switchgear and controlgear \u2014 Part 6-1:\r\n        Multiple function equipment \u2014 Transfer switching equipment.<\/em>\r\n        Edition 4.0, 2026.\r\n        <a href=\"https:\/\/webstore.iec.ch\/en\/publication\/90494\"\r\n           target=\"_blank\"\r\n           rel=\"noopener noreferrer\">\r\n          IEC official publication page\r\n        <\/a>.\r\n      <\/li>\r\n\r\n      <li>\r\n        Schneider Electric.\r\n        <em>TransferPacT Active Automatic and Automatic User Guide \u2014 Time Delay.<\/em>\r\n        Document DOCA0214EN.\r\n        Includes T2 Transfer Delay, T6 Re-Transfer Delay, T7 Genset Start Delay and T9 Genset Cool Delay.\r\n        <a href=\"https:\/\/productinfo.se.com\/transferpactactiveautomaticandautomaticuserguide\/transferpact-active-automatic-and-automatic-user-guide\/English\/TransferPacT%20Automatic%20Transfer%20Switching%20Equipment%20%28ASTE%29%20User%20Guide_0000608024.xml\/%24\/TimeDelay-952BFF61\"\r\n           target=\"_blank\"\r\n           rel=\"noopener noreferrer\">\r\n          Schneider Electric official product documentation\r\n        <\/a>.\r\n      <\/li>\r\n\r\n      <li>\r\n        Schneider Electric.\r\n        <em>TransferPacT Active Automatic and Automatic User Guide \u2014 Auto Mode.<\/em>\r\n        Utility-generator transfer and retransfer operating logic.\r\n        <a href=\"https:\/\/productinfo.se.com\/transferpactactiveautomaticandautomaticuserguide\/transferpact-active-automatic-and-automatic-user-guide\/English\/TransferPacT%20Automatic%20Transfer%20Switching%20Equipment%20%28ASTE%29%20User%20Guide_0000608024.xml\/%24\/AutoMode-95A83523\"\r\n           target=\"_blank\"\r\n           rel=\"noopener noreferrer\">\r\n          Schneider Electric official auto-mode documentation\r\n        <\/a>.\r\n      <\/li>\r\n\r\n      <li>\r\n        Cummins Inc.\r\n        <em>North America Product Line \u2014 Transfer Switches.<\/em>\r\n        2025 product comparison.\r\n        Includes controller-family information for transfer, retransfer, engine-start delay and engine-stop delay.\r\n        <a href=\"https:\/\/www.cummins.com\/sites\/default\/files\/2025-04\/transfer-switches-rating-cards-north-america-2025.pdf\"\r\n           target=\"_blank\"\r\n           rel=\"noopener noreferrer\">\r\n          Cummins official PDF\r\n        <\/a>.\r\n      <\/li>\r\n\r\n      <li>\r\n        Schneider Electric \/ ASCO Power Technologies.\r\n        <em>How to conduct generator test with load transfer for a 165 Series ATS?<\/em>\r\n        FAQ000233188.\r\n        <a href=\"https:\/\/www.se.com\/sg\/en\/faqs\/FAQ000233188\/\"\r\n           target=\"_blank\"\r\n           rel=\"noopener noreferrer\">\r\n          Schneider Electric official FAQ\r\n        <\/a>.\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          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For compact utility-generator ATS applications, however, not every timing&#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-31283","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 Time Delay Settings for Generator Systems | LEEYEE<\/title>\n<meta name=\"description\" content=\"Learn how generator ATS time delays work, where start, transfer, retransfer and cooldown timing may be controlled, and what to confirm when selecting a compact ATS.\" \/>\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\/th\/ats-time-delay-settings\/\" \/>\n<meta property=\"og:locale\" content=\"th_TH\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"ATS Time Delay Settings for Generator Systems | LEEYEE\" \/>\n<meta property=\"og:description\" content=\"Learn how generator ATS time delays work, where start, transfer, retransfer and cooldown timing may be controlled, and what to confirm when selecting a compact ATS.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.cnspd.com\/th\/ats-time-delay-settings\/\" \/>\n<meta property=\"og:site_name\" content=\"Surge Protector, Surge Arrestor, Isolating Switch - 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