{"id":31652,"date":"2026-10-14T09:11:44","date_gmt":"2026-10-14T01:11:44","guid":{"rendered":"https:\/\/www.cnspd.com\/?p=31652"},"modified":"2026-10-14T09:21:25","modified_gmt":"2026-10-14T01:21:25","slug":"ats-for-gas-generator-backup-systems-selection-controller-guide","status":"publish","type":"post","link":"https:\/\/www.cnspd.com\/id\/gas-generator-ats\/","title":{"rendered":"ATS for Gas Generator Backup Systems: Selection &#038; Controller Guide"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"31652\" class=\"elementor elementor-31652\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-27c1d97 e-flex e-con-boxed e-con e-parent\" data-id=\"27c1d97\" 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-0fb59e7 elementor-widget elementor-widget-html\" data-id=\"0fb59e7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<style>\r\n#leeyee-gas-generator-ats-guide {\r\n  --ly-blue: #004898;\r\n  --ly-blue-dark: #00396f;\r\n  --ly-blue-soft: #eef5ff;\r\n  --ly-blue-soft-2: #f7fbff;\r\n  --ly-text: #243342;\r\n  --ly-muted: #5b6875;\r\n  --ly-border: #d8e3ec;\r\n  --ly-warning-bg: #fff8e9;\r\n  --ly-warning-border: #d79832;\r\n  --ly-white: #ffffff;\r\n  --ly-shadow: 0 7px 22px rgba(0,72,152,.08);\r\n  max-width: 860px;\r\n  margin: 0 auto;\r\n  padding: 0 20px 56px;\r\n  box-sizing: border-box;\r\n  color: var(--ly-text);\r\n  font-size: 17px;\r\n  line-height: 1.72;\r\n  overflow-wrap: break-word;\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide *,\r\n#leeyee-gas-generator-ats-guide *::before,\r\n#leeyee-gas-generator-ats-guide *::after {\r\n  box-sizing: border-box;\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide p {\r\n  margin: 0 0 18px;\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide a {\r\n  color: var(--ly-blue);\r\n  text-decoration: underline;\r\n  text-decoration-thickness: 1px;\r\n  text-underline-offset: 3px;\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide strong {\r\n  color: #1c2c3b;\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide h2 {\r\n  margin: 52px 0 20px;\r\n  color: #172838;\r\n  font-size: clamp(28px,3vw,32px);\r\n  line-height: 1.22;\r\n  font-weight: 760;\r\n  letter-spacing: -.02em;\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide h3 {\r\n  margin: 34px 0 14px;\r\n  color: #1d3448;\r\n  font-size: clamp(21px,2.4vw,24px);\r\n  line-height: 1.3;\r\n  font-weight: 730;\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide ul,\r\n#leeyee-gas-generator-ats-guide ol {\r\n  margin: 14px 0 22px;\r\n  padding-left: 25px;\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide li {\r\n  margin: 7px 0;\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide .ly-intro {\r\n  margin-bottom: 26px;\r\n  color: #334454;\r\n  font-size: 18px;\r\n  line-height: 1.72;\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide .ly-quick-answer {\r\n  margin: 26px 0 36px;\r\n  padding: 25px 27px;\r\n  border: 1px solid #cbddec;\r\n  border-left: 5px solid var(--ly-blue);\r\n  border-radius: 12px;\r\n  background: var(--ly-blue-soft-2);\r\n  box-shadow: var(--ly-shadow);\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide .ly-quick-answer h2 {\r\n  margin: 0 0 14px;\r\n  font-size: 25px;\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide .ly-quick-answer p:last-child {\r\n  margin-bottom: 0;\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide .ly-answer-line {\r\n  margin-top: 18px;\r\n  padding-top: 16px;\r\n  border-top: 1px solid #d5e5f2;\r\n  font-weight: 650;\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide .ly-figure {\r\n  margin: 30px 0 38px;\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide .ly-figure img {\r\n  display: block;\r\n  width: 100%;\r\n  height: auto;\r\n  margin: 0 auto;\r\n  border: 1px solid #dfe7ee;\r\n  border-radius: 10px;\r\n  background: #fff;\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide .ly-figure--product img {\r\n  width: min(100%, 620px);\r\n  object-fit: contain;\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide .ly-figure figcaption {\r\n  max-width: 760px;\r\n  margin: 10px auto 0;\r\n  color: var(--ly-muted);\r\n  font-size: 14px;\r\n  line-height: 1.55;\r\n  text-align: center;\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide .ly-note,\r\n#leeyee-gas-generator-ats-guide .ly-warning,\r\n#leeyee-gas-generator-ats-guide .ly-checklist,\r\n#leeyee-gas-generator-ats-guide .ly-cta {\r\n  margin: 26px 0;\r\n  padding: 22px 24px;\r\n  border-radius: 11px;\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide .ly-note {\r\n  border: 1px solid #cddff1;\r\n  background: var(--ly-blue-soft);\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide .ly-warning {\r\n  border: 1px solid #ebd3a4;\r\n  border-left: 5px solid var(--ly-warning-border);\r\n  background: var(--ly-warning-bg);\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide .ly-checklist {\r\n  border: 1px solid var(--ly-border);\r\n  background: #fbfdff;\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide .ly-table-wrap {\r\n  width: 100%;\r\n  margin: 22px 0 30px;\r\n  overflow-x: auto;\r\n  -webkit-overflow-scrolling: touch;\r\n  border: 1px solid var(--ly-border);\r\n  border-radius: 10px;\r\n  background: #fff;\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide table {\r\n  width: 100%;\r\n  min-width: 650px;\r\n  margin: 0;\r\n  border-collapse: collapse;\r\n  background: #fff;\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide th,\r\n#leeyee-gas-generator-ats-guide td {\r\n  padding: 13px 15px;\r\n  text-align: left;\r\n  vertical-align: top;\r\n  border-bottom: 1px solid #e3e9ef;\r\n  line-height: 1.5;\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide th {\r\n  background: var(--ly-blue);\r\n  color: #fff;\r\n  font-size: 15px;\r\n  font-weight: 720;\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide tbody tr:nth-child(even) td {\r\n  background: #fbfdff;\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide tbody tr:last-child td {\r\n  border-bottom: 0;\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide .ly-table-note {\r\n  margin-top: -16px;\r\n  color: var(--ly-muted);\r\n  font-size: 15px;\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide .ly-key-grid {\r\n  display: grid;\r\n  grid-template-columns: repeat(2,minmax(0,1fr));\r\n  gap: 15px;\r\n  margin: 22px 0 30px;\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide .ly-key-item {\r\n  padding: 18px 19px;\r\n  border: 1px solid var(--ly-border);\r\n  border-radius: 10px;\r\n  background: #fff;\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide .ly-key-item h3 {\r\n  margin: 0 0 8px;\r\n  font-size: 18px;\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide .ly-key-item p {\r\n  margin: 0;\r\n  color: #465565;\r\n  font-size: 16px;\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide .ly-flow {\r\n  display: grid;\r\n  grid-template-columns: repeat(5,1fr);\r\n  gap: 8px;\r\n  margin: 24px 0 30px;\r\n  align-items: stretch;\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide .ly-flow-step {\r\n  position: relative;\r\n  min-height: 116px;\r\n  padding: 14px 10px;\r\n  border: 1px solid #d4e1ec;\r\n  border-radius: 9px;\r\n  background: #fbfdff;\r\n  text-align: center;\r\n  font-size: 14px;\r\n  line-height: 1.45;\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide .ly-flow-step strong {\r\n  display: block;\r\n  margin-bottom: 5px;\r\n  color: var(--ly-blue);\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide .ly-flow-step:not(:last-child)::after {\r\n  content: \"\u2192\";\r\n  position: absolute;\r\n  top: 41%;\r\n  right: -12px;\r\n  z-index: 2;\r\n  color: var(--ly-blue);\r\n  font-size: 20px;\r\n  font-weight: 700;\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide .ly-formula {\r\n  margin: 20px 0 24px;\r\n  padding: 20px 22px;\r\n  border: 1px solid #d8e4ee;\r\n  border-radius: 10px;\r\n  background: #f4f8fc;\r\n  text-align: center;\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide .ly-equation {\r\n  display: block;\r\n  margin: 7px 0;\r\n  color: #173d61;\r\n  font-size: 21px;\r\n  font-weight: 750;\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide .ly-cta {\r\n  border: 1px solid #cddff1;\r\n  background: var(--ly-blue-soft-2);\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide .ly-cta h3 {\r\n  margin-top: 0;\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide .leeyee-about-btn-light.leeyee-site-popup-btn {\r\n  appearance: none;\r\n  -webkit-appearance: none;\r\n  display: inline-flex;\r\n  align-items: center;\r\n  justify-content: center;\r\n  min-height: 50px;\r\n  margin: 4px 0 0;\r\n  padding: 12px 26px;\r\n  border: 1.5px solid #004898;\r\n  border-radius: 10px;\r\n  background: #ffffff;\r\n  color: #004898;\r\n  font-family: inherit;\r\n  font-size: 16px;\r\n  line-height: 1.2;\r\n  font-weight: 700;\r\n  text-align: center;\r\n  text-decoration: none;\r\n  cursor: pointer;\r\n  box-shadow: 0 5px 14px rgba(0,72,152,.11);\r\n  transition:\r\n    background-color .18s ease,\r\n    color .18s ease,\r\n    transform .18s ease,\r\n    box-shadow .18s ease;\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide .leeyee-about-btn-light.leeyee-site-popup-btn:hover {\r\n  background: #004898;\r\n  color: #ffffff;\r\n  transform: translateY(-1px);\r\n  box-shadow: 0 7px 18px rgba(0,72,152,.16);\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide .leeyee-about-btn-light.leeyee-site-popup-btn:focus-visible {\r\n  outline: 3px solid rgba(0,72,152,.28);\r\n  outline-offset: 3px;\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide .leeyee-about-btn-light .w-btn-label {\r\n  display: inline-block;\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide .ly-faq {\r\n  margin-top: 24px;\r\n  border-top: 1px solid var(--ly-border);\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide .ly-faq-item {\r\n  padding: 22px 0;\r\n  border-bottom: 1px solid var(--ly-border);\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide .ly-faq-item h3 {\r\n  margin: 0 0 9px;\r\n  font-size: 20px;\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide .ly-faq-item p:last-child {\r\n  margin-bottom: 0;\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide .ly-related {\r\n  margin: 34px 0 0;\r\n  padding: 20px 22px;\r\n  border-top: 1px solid var(--ly-border);\r\n  border-bottom: 1px solid var(--ly-border);\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide .ly-related strong {\r\n  display: block;\r\n  margin-bottom: 7px;\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide .ly-references {\r\n  margin-top: 50px;\r\n  padding-top: 28px;\r\n  border-top: 2px solid #d9e4ed;\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide .ly-references ol {\r\n  padding-left: 22px;\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide .ly-references li {\r\n  margin-bottom: 13px;\r\n  color: #4a5866;\r\n  font-size: 15px;\r\n  line-height: 1.62;\r\n}\r\n\r\n#leeyee-gas-generator-ats-guide .ly-ref {\r\n  white-space: nowrap;\r\n  font-size: .84em;\r\n  vertical-align: super;\r\n  text-decoration: none;\r\n}\r\n\r\n@media (max-width: 820px) {\r\n  #leeyee-gas-generator-ats-guide {\r\n    padding-left: 18px;\r\n    padding-right: 18px;\r\n    font-size: 16.5px;\r\n  }\r\n\r\n  #leeyee-gas-generator-ats-guide .ly-key-grid {\r\n    grid-template-columns: 1fr;\r\n  }\r\n\r\n  #leeyee-gas-generator-ats-guide .ly-flow {\r\n    grid-template-columns: 1fr;\r\n    gap: 10px;\r\n  }\r\n\r\n  #leeyee-gas-generator-ats-guide .ly-flow-step {\r\n    min-height: 0;\r\n    text-align: left;\r\n    padding: 14px 16px;\r\n  }\r\n\r\n  #leeyee-gas-generator-ats-guide .ly-flow-step:not(:last-child)::after {\r\n    content: \"\u2193\";\r\n    top: auto;\r\n    right: 50%;\r\n    bottom: -16px;\r\n    transform: translateX(50%);\r\n  }\r\n}\r\n\r\n@media (max-width: 600px) {\r\n  #leeyee-gas-generator-ats-guide {\r\n    padding-left: 15px;\r\n    padding-right: 15px;\r\n    padding-bottom: 42px;\r\n    font-size: 16px;\r\n    line-height: 1.68;\r\n  }\r\n\r\n  #leeyee-gas-generator-ats-guide h2 {\r\n    margin-top: 42px;\r\n    font-size: 27px;\r\n  }\r\n\r\n  #leeyee-gas-generator-ats-guide h3 {\r\n    font-size: 21px;\r\n  }\r\n\r\n  #leeyee-gas-generator-ats-guide .ly-intro {\r\n    font-size: 17px;\r\n  }\r\n\r\n  #leeyee-gas-generator-ats-guide .ly-quick-answer,\r\n  #leeyee-gas-generator-ats-guide .ly-note,\r\n  #leeyee-gas-generator-ats-guide .ly-warning,\r\n  #leeyee-gas-generator-ats-guide .ly-checklist,\r\n  #leeyee-gas-generator-ats-guide .ly-cta {\r\n    padding: 19px 17px;\r\n  }\r\n\r\n  #leeyee-gas-generator-ats-guide .ly-quick-answer h2 {\r\n    font-size: 23px;\r\n  }\r\n\r\n  #leeyee-gas-generator-ats-guide .ly-figure {\r\n    margin: 24px 0 31px;\r\n  }\r\n\r\n  #leeyee-gas-generator-ats-guide .leeyee-about-btn-light.leeyee-site-popup-btn {\r\n    width: 100%;\r\n    min-height: 50px;\r\n    padding-left: 18px;\r\n    padding-right: 18px;\r\n  }\r\n\r\n  #leeyee-gas-generator-ats-guide table {\r\n    min-width: 570px;\r\n  }\r\n\r\n  #leeyee-gas-generator-ats-guide th,\r\n  #leeyee-gas-generator-ats-guide td {\r\n    padding: 11px 12px;\r\n    font-size: 14.5px;\r\n  }\r\n\r\n  #leeyee-gas-generator-ats-guide .ly-equation {\r\n    font-size: 18px;\r\n  }\r\n}\r\n\r\n@media (max-width: 390px) {\r\n  #leeyee-gas-generator-ats-guide {\r\n    padding-left: 13px;\r\n    padding-right: 13px;\r\n  }\r\n\r\n  #leeyee-gas-generator-ats-guide h2 {\r\n    font-size: 25px;\r\n  }\r\n\r\n  #leeyee-gas-generator-ats-guide .ly-quick-answer,\r\n  #leeyee-gas-generator-ats-guide .ly-note,\r\n  #leeyee-gas-generator-ats-guide .ly-warning,\r\n  #leeyee-gas-generator-ats-guide .ly-checklist,\r\n  #leeyee-gas-generator-ats-guide .ly-cta {\r\n    padding: 17px 15px;\r\n  }\r\n}\r\n<\/style>\r\n\r\n<article id=\"leeyee-gas-generator-ats-guide\">\r\n\r\n  <p class=\"ly-intro\">\r\n    A gas generator can work with an automatic transfer switch, but selecting the ATS is not simply a matter of choosing a \u201cgenerator ATS.\u201d For generator-set integrators, panel builders, contractors and project buyers, the critical issue is whether the <strong>electrical ratings, pole configuration and generator-control interface all match the backup system<\/strong>.\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\">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\/id\/gas-generator-ats\/#quick-answer-what-ats-is-suitable-for-a-gas-generator\" >Quick Answer: What ATS Is Suitable for a Gas Generator?<\/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\/gas-generator-ats\/#what-must-match-between-the-gas-generator-and-the-ats\" >What Must Match Between the Gas Generator and the ATS?<\/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\/gas-generator-ats\/#leeyee-compact-ats-for-utility-to-backup-source-switching\" >LEEYEE Compact ATS for Utility-to-Backup-Source Switching<\/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\/gas-generator-ats\/#can-any-ats-work-with-any-gas-generator\" >Can Any ATS Work with Any Gas Generator?<\/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\/gas-generator-ats\/#ats-and-gas-generator-controller-who-controls-what\" >ATS and Gas Generator Controller: Who Controls What?<\/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\/gas-generator-ats\/#how-does-the-automatic-transfer-sequence-work\" >How Does the Automatic Transfer Sequence Work?<\/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\/gas-generator-ats\/#does-the-generator-need-to-warm-up-before-the-ats-transfers\" >Does the Generator Need to Warm Up Before the ATS Transfers?<\/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\/gas-generator-ats\/#is-a-gas-generator-ats-different-from-a-diesel-generator-ats\" >Is a Gas Generator ATS Different from a Diesel Generator ATS?<\/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\/gas-generator-ats\/#how-to-select-a-leeyee-ats-for-a-gas-generator-project\" >How to Select a LEEYEE ATS for a Gas Generator Project<\/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\/gas-generator-ats\/#should-a-three-phase-gas-generator-use-a-3p-or-4p-ats\" >Should a Three-Phase Gas Generator Use a 3P or 4P ATS?<\/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\/gas-generator-ats\/#what-gas-generator-conditions-are-outside-the-ats-scope\" >What Gas-Generator Conditions Are Outside the ATS Scope?<\/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\/gas-generator-ats\/#common-gas-generator-ats-specification-mistakes\" >Common Gas Generator ATS Specification Mistakes<\/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\/gas-generator-ats\/#before-ordering-gas-generator-ats-confirmation-checklist\" >Before Ordering: Gas Generator ATS Confirmation Checklist<\/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\/id\/gas-generator-ats\/#frequently-asked-questions\" >Frequently Asked Questions<\/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\/id\/gas-generator-ats\/#engineering-takeaway\" >Engineering Takeaway<\/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\/id\/gas-generator-ats\/#references\" >References<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"quick-answer-what-ats-is-suitable-for-a-gas-generator\"><\/span>Quick Answer: What ATS Is Suitable for a Gas Generator?<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n    <p>\r\n      A natural-gas or other gas-fuelled standby generator can be paired with an ATS when the utility source, generator output, load current, phase configuration and transfer requirements are compatible.\r\n    <\/p>\r\n\r\n    <p>\r\n      In a typical utility-to-generator system, the ATS monitors source conditions and transfers the load between the normal and backup electrical sources. If automatic generator starting is required, the start interface must also be compatible with the actual generator controller and must be confirmed from the model-specific wiring documentation. <a class=\"ly-ref\" href=\"#ref-2\">[2]<\/a>\r\n    <\/p>\r\n\r\n    <p>\r\n      The ATS does <strong>not<\/strong> replace the generator controller. It does not directly manage gas pressure, fuel piping, ignition, combustion air or ventilation. Those functions remain part of the generator and project engineering scope.\r\n    <\/p>\r\n\r\n    <p class=\"ly-answer-line\">\r\n      For procurement, confirm six items first: <strong>voltage, phase, load current, poles, transition method and generator-controller interface.<\/strong>\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\/gas-generator-ats-backup-system-diagram.webp\"\r\n      alt=\"Gas generator ATS backup system diagram showing utility power, compact ATS, generator controller, gas generator and load\"\r\n      width=\"1448\"\r\n      height=\"1086\"\r\n      loading=\"eager\"\r\n      decoding=\"async\">\r\n    <figcaption>\r\n      Typical gas-generator backup architecture. The main power path and the generator-control path are separate and should both be verified before panel production.\r\n    <\/figcaption>\r\n  <\/figure>\r\n\r\n  <h2><span class=\"ez-toc-section\" id=\"what-must-match-between-the-gas-generator-and-the-ats\"><\/span>What Must Match Between the Gas Generator and the ATS?<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n  <p>\r\n    This is the main engineering question for a gas generator ATS project. Fuel type matters to the generator installation, but the transfer switch itself must first match the electrical system and the required control arrangement.\r\n  <\/p>\r\n\r\n  <div class=\"ly-table-wrap\">\r\n    <table>\r\n      <thead>\r\n        <tr>\r\n          <th>Item to Confirm<\/th>\r\n          <th>Why It Matters<\/th>\r\n          <th>What the Buyer Should Provide<\/th>\r\n        <\/tr>\r\n      <\/thead>\r\n      <tbody>\r\n        <tr>\r\n          <td>System voltage<\/td>\r\n          <td>Utility, generator and ATS ratings must be compatible.<\/td>\r\n          <td>Normal-source and generator-output voltage<\/td>\r\n        <\/tr>\r\n        <tr>\r\n          <td>Phase<\/td>\r\n          <td>Determines the basic source and load configuration.<\/td>\r\n          <td>Single-phase or three-phase<\/td>\r\n        <\/tr>\r\n        <tr>\r\n          <td>Load current<\/td>\r\n          <td>Determines the required ATS current rating.<\/td>\r\n          <td>Design current and important load characteristics<\/td>\r\n        <\/tr>\r\n        <tr>\r\n          <td>Pole configuration<\/td>\r\n          <td>Neutral treatment can affect whether 2P, 3P or 4P switching is appropriate.<\/td>\r\n          <td>Single-line diagram and neutral \/ earthing arrangement<\/td>\r\n        <\/tr>\r\n        <tr>\r\n          <td>Transition method<\/td>\r\n          <td>LEEYEE standard compact ATS applications are based on open-transition transfer.<\/td>\r\n          <td>Confirm whether a short break is acceptable<\/td>\r\n        <\/tr>\r\n        <tr>\r\n          <td>Generator controller<\/td>\r\n          <td>Any automatic-start interface must match the controller actually used in the genset.<\/td>\r\n          <td>Controller model and wiring diagram<\/td>\r\n        <\/tr>\r\n      <\/tbody>\r\n    <\/table>\r\n  <\/div>\r\n\r\n  <p class=\"ly-table-note\">\r\n    Procurement conclusion: \u201cnatural gas generator\u201d alone is not enough information to select an ATS.\r\n  <\/p>\r\n\r\n  <h2><span class=\"ez-toc-section\" id=\"leeyee-compact-ats-for-utility-to-backup-source-switching\"><\/span>LEEYEE Compact ATS for Utility-to-Backup-Source Switching<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n  <p>\r\n    LEEYEE supplies compact integrated automatic transfer switches for switching between two low-voltage power sources. The actual product shown below is available in compact pole configurations such as 2P and 4P, making it suitable for many single-phase and three-phase backup-power panel designs when the electrical ratings and project conditions match.\r\n  <\/p>\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\/2.png\"\r\n      alt=\"LEEYEE compact 2P and 4P automatic transfer switches for utility and backup power source switching\"\r\n      loading=\"lazy\"\r\n      decoding=\"async\">\r\n    <figcaption>\r\n      Actual LEEYEE compact ATS product. Final suitability for a gas-generator project depends on voltage, current, pole configuration, neutral arrangement and the required generator-control interface.\r\n    <\/figcaption>\r\n  <\/figure>\r\n\r\n  <div class=\"ly-note\">\r\n    <strong>Product boundary:<\/strong> this compact ATS is the electrical source-transfer device. Do not assume from the product appearance alone that a specific model provides an independent generator remote-start dry contact or a particular controller terminal arrangement. Those functions must be confirmed from the exact model wiring diagram before the project is approved.\r\n  <\/div>\r\n\r\n  <h2><span class=\"ez-toc-section\" id=\"can-any-ats-work-with-any-gas-generator\"><\/span>Can Any ATS Work with Any Gas Generator?<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n  <p>\r\n    <strong>No.<\/strong> An ATS and gas generator should not be considered compatible only because both support automatic operation.\r\n  <\/p>\r\n\r\n  <p>\r\n    In generator-backed systems, source transfer and generator starting are separate functions. Many transfer-control systems can coordinate or provide a generator-start request, but the exact interface depends on the ATS design and generator controller. Cummins transfer-switch guidance describes systems in which the transfer control detects unacceptable normal power, completes the relevant start delay, signals the generator set to start, monitors generator voltage build-up and then proceeds with transfer logic. <a class=\"ly-ref\" href=\"#ref-2\">[2]<\/a>\r\n  <\/p>\r\n\r\n  <div class=\"ly-note\">\r\n    <strong>Engineering meaning:<\/strong> do not automatically describe every ATS as having a generator-start output. For the LEEYEE compact ATS used in a project, confirm the exact model wiring diagram and generator-controller requirements first.\r\n  <\/div>\r\n\r\n  <h3>Check the Generator Control Interface Before Ordering<\/h3>\r\n\r\n  <p>\r\n    Generator controllers are not universally wired the same way. If the project requires the ATS to coordinate automatic generator starting, confirm the actual controller documentation before an OEM panel is built.\r\n  <\/p>\r\n\r\n  <ul>\r\n    <li>Generator controller manufacturer and model<\/li>\r\n    <li>Remote-start input type, if required<\/li>\r\n    <li>Required NO \/ NC contact logic where applicable<\/li>\r\n    <li>Whether a dry contact or another interface is required<\/li>\r\n    <li>Permitted control voltage and contact rating<\/li>\r\n    <li>Terminal identification<\/li>\r\n    <li>Start and stop logic<\/li>\r\n    <li>Any auxiliary alarm or status signals required by the project<\/li>\r\n  <\/ul>\r\n\r\n  <div class=\"ly-warning\">\r\n    <strong>Do not invent or reuse terminal numbers.<\/strong> The generator controller wiring diagram and the selected ATS model documentation should be checked together before wiring approval.\r\n  <\/div>\r\n\r\n  <h2><span class=\"ez-toc-section\" id=\"ats-and-gas-generator-controller-who-controls-what\"><\/span>ATS and Gas Generator Controller: Who Controls What?<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n  <p>\r\n    The most important system boundary is between <strong>source transfer<\/strong> and <strong>engine-generator operation<\/strong>. IEC 60947-6-1 applies to transfer switching equipment used to transfer a load between power supply sources. <a class=\"ly-ref\" href=\"#ref-1\">[1]<\/a>\r\n  <\/p>\r\n\r\n  <div class=\"ly-table-wrap\">\r\n    <table>\r\n      <thead>\r\n        <tr>\r\n          <th>Function<\/th>\r\n          <th>ATS \/ Transfer Control<\/th>\r\n          <th>Generator Controller \/ Project System<\/th>\r\n        <\/tr>\r\n      <\/thead>\r\n      <tbody>\r\n        <tr>\r\n          <td>Monitor normal source<\/td>\r\n          <td>Yes, according to ATS functions<\/td>\r\n          <td>Not the main transfer function<\/td>\r\n        <\/tr>\r\n        <tr>\r\n          <td>Evaluate alternate electrical source<\/td>\r\n          <td>According to selected ATS\/control functions<\/td>\r\n          <td>Produces and regulates generator output<\/td>\r\n        <\/tr>\r\n        <tr>\r\n          <td>Request generator start<\/td>\r\n          <td>Only if the selected model\/control arrangement provides a compatible interface<\/td>\r\n          <td>Receives and processes the start request<\/td>\r\n        <\/tr>\r\n        <tr>\r\n          <td>Crank and start engine<\/td>\r\n          <td>No<\/td>\r\n          <td>Generator-controller function<\/td>\r\n        <\/tr>\r\n        <tr>\r\n          <td>Ignition and engine operation<\/td>\r\n          <td>No<\/td>\r\n          <td>Generator-system function<\/td>\r\n        <\/tr>\r\n        <tr>\r\n          <td>Transfer electrical load<\/td>\r\n          <td>Yes<\/td>\r\n          <td>No<\/td>\r\n        <\/tr>\r\n        <tr>\r\n          <td>Gas pressure, regulator and piping<\/td>\r\n          <td>No<\/td>\r\n          <td>Generator \/ project engineering<\/td>\r\n        <\/tr>\r\n        <tr>\r\n          <td>Ventilation and combustion air<\/td>\r\n          <td>No<\/td>\r\n          <td>Generator \/ project engineering<\/td>\r\n        <\/tr>\r\n      <\/tbody>\r\n    <\/table>\r\n  <\/div>\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-vs-gas-generator-controller-responsibilities.webp\"\r\n      alt=\"ATS versus gas generator controller responsibilities showing source transfer functions and generator control functions\"\r\n      width=\"1448\"\r\n      height=\"1086\"\r\n      loading=\"lazy\"\r\n      decoding=\"async\">\r\n    <figcaption>\r\n      ATS and generator-controller responsibilities should be separated clearly. The exact control interface still needs model-specific confirmation.\r\n    <\/figcaption>\r\n  <\/figure>\r\n\r\n  <h2><span class=\"ez-toc-section\" id=\"how-does-the-automatic-transfer-sequence-work\"><\/span>How Does the Automatic Transfer Sequence Work?<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n  <p>\r\n    This page focuses on gas-generator compatibility and selection rather than repeating the complete ATS operating-principle guide. A typical generator-backed transfer sequence can be reduced to five engineering stages:\r\n  <\/p>\r\n\r\n  <div class=\"ly-flow\">\r\n    <div class=\"ly-flow-step\">\r\n      <strong>1. Utility Fails<\/strong>\r\n      ATS detects an unacceptable normal source.\r\n    <\/div>\r\n\r\n    <div class=\"ly-flow-step\">\r\n      <strong>2. Generator Starts<\/strong>\r\n      The configured control system requests generator operation where supported.\r\n    <\/div>\r\n\r\n    <div class=\"ly-flow-step\">\r\n      <strong>3. Source Builds<\/strong>\r\n      Generator controller starts the genset and electrical output becomes available.\r\n    <\/div>\r\n\r\n    <div class=\"ly-flow-step\">\r\n      <strong>4. Load Transfers<\/strong>\r\n      ATS transfers after the alternate source satisfies the required conditions.\r\n    <\/div>\r\n\r\n    <div class=\"ly-flow-step\">\r\n      <strong>5. Utility Returns<\/strong>\r\n      ATS retransfers after the normal source satisfies the return logic.\r\n    <\/div>\r\n  <\/div>\r\n\r\n  <p>\r\n    Cummins describes this general relationship in generator transfer applications: normal-source monitoring, generator-start coordination, generator voltage build-up, transfer delay and later retransfer are separate stages of operation. <a class=\"ly-ref\" href=\"#ref-2\">[2]<\/a>\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\/gas-generator-ats-automatic-transfer-sequence.webp\"\r\n      alt=\"Automatic transfer sequence for a gas generator ATS from utility failure to generator start, load transfer, retransfer and cooldown\"\r\n      width=\"1448\"\r\n      height=\"1086\"\r\n      loading=\"lazy\"\r\n      decoding=\"async\">\r\n    <figcaption>\r\n      Typical generator-backed transfer sequence. Exact start, transfer, retransfer and cooldown logic depends on the selected ATS, generator controller and project requirements.\r\n    <\/figcaption>\r\n  <\/figure>\r\n\r\n  <div class=\"ly-note\">\r\n    For the complete ATS operating principle, source sensing and transfer sequence, see\r\n    <a href=\"https:\/\/www.cnspd.com\/what-is-an-automatic-transfer-switch-how-ats-works-how-to-choose\/\">\r\n      What Is an Automatic Transfer Switch? How ATS Works &amp; How to Choose\r\n    <\/a>.\r\n  <\/div>\r\n\r\n  <h2><span class=\"ez-toc-section\" id=\"does-the-generator-need-to-warm-up-before-the-ats-transfers\"><\/span>Does the Generator Need to Warm Up Before the ATS Transfers?<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n  <p>\r\n    The important requirement is not simply \u201cwait a fixed number of seconds.\u201d The alternate source must satisfy the transfer logic required by the selected system.\r\n  <\/p>\r\n\r\n  <p>\r\n    Generator starting and generator readiness are separate conditions. Cummins guidance describes generator voltage build-up and transfer-related time delays intended to ensure the generator source is suitable before load transfer. <a class=\"ly-ref\" href=\"#ref-2\">[2]<\/a>\r\n  <\/p>\r\n\r\n  <p>\r\n    Manufacturer-specific ATS products can use different delay values. A delay documented for one ATS or generator therefore must not be copied as a universal setting for every gas-generator project. <a class=\"ly-ref\" href=\"#ref-3\">[3]<\/a>\r\n  <\/p>\r\n\r\n  <div class=\"ly-warning\">\r\n    <strong>Project confirmation required:<\/strong> do not specify a universal gas-generator warm-up time. Verify the generator manual, ATS\/controller settings and project operating sequence.\r\n  <\/div>\r\n\r\n  <h2><span class=\"ez-toc-section\" id=\"is-a-gas-generator-ats-different-from-a-diesel-generator-ats\"><\/span>Is a Gas Generator ATS Different from a Diesel Generator ATS?<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n  <p>\r\n    From the transfer-switch side, the basic electrical task is usually similar: transfer the load between the normal source and the generator source. The generator fuel does not by itself determine the ATS current rating, pole count or voltage rating.\r\n  <\/p>\r\n\r\n  <div class=\"ly-table-wrap\">\r\n    <table>\r\n      <thead>\r\n        <tr>\r\n          <th>Selection Point<\/th>\r\n          <th>Gas Generator<\/th>\r\n          <th>Diesel Generator<\/th>\r\n        <\/tr>\r\n      <\/thead>\r\n      <tbody>\r\n        <tr>\r\n          <td>Basic ATS role<\/td>\r\n          <td>Transfer between utility and generator source<\/td>\r\n          <td>Transfer between utility and generator source<\/td>\r\n        <\/tr>\r\n        <tr>\r\n          <td>ATS voltage \/ current<\/td>\r\n          <td>Based on electrical system and load<\/td>\r\n          <td>Based on electrical system and load<\/td>\r\n        <\/tr>\r\n        <tr>\r\n          <td>Start interface<\/td>\r\n          <td>Must be verified if automatic-start coordination is required<\/td>\r\n          <td>Must be verified if automatic-start coordination is required<\/td>\r\n        <\/tr>\r\n        <tr>\r\n          <td>Fuel-side engineering<\/td>\r\n          <td>Gas pressure, regulator, piping and supply conditions<\/td>\r\n          <td>Diesel storage and fuel-delivery system<\/td>\r\n        <\/tr>\r\n        <tr>\r\n          <td>Engine operating sequence<\/td>\r\n          <td>Generator-specific<\/td>\r\n          <td>Generator-specific<\/td>\r\n        <\/tr>\r\n      <\/tbody>\r\n    <\/table>\r\n  <\/div>\r\n\r\n  <p class=\"ly-table-note\">\r\n    Buyer meaning: select the ATS from electrical and control requirements, not from the fuel label alone.\r\n  <\/p>\r\n\r\n  <h2><span class=\"ez-toc-section\" id=\"how-to-select-a-leeyee-ats-for-a-gas-generator-project\"><\/span>How to Select a LEEYEE ATS for a Gas Generator Project<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n  <p>\r\n    LEEYEE's compact 2P and 4P ATS products are suitable as the electrical source-transfer element in compatible utility-to-backup-source systems. Final selection must still be based on the project electrical design.\r\n  <\/p>\r\n\r\n  <div class=\"ly-key-grid\">\r\n\r\n    <div class=\"ly-key-item\">\r\n      <h3>1. Confirm Voltage<\/h3>\r\n      <p>\r\n        Utility voltage, generator output and ATS rated voltage must match the intended system.\r\n      <\/p>\r\n    <\/div>\r\n\r\n    <div class=\"ly-key-item\">\r\n      <h3>2. Confirm Phase<\/h3>\r\n      <p>\r\n        Identify whether the system is single-phase or three-phase before choosing pole configuration.\r\n      <\/p>\r\n    <\/div>\r\n\r\n    <div class=\"ly-key-item\">\r\n      <h3>3. Confirm Load Current<\/h3>\r\n      <p>\r\n        Use the real design load and applicable engineering margin rather than generator fuel type.\r\n      <\/p>\r\n    <\/div>\r\n\r\n    <div class=\"ly-key-item\">\r\n      <h3>4. Confirm Pole Configuration<\/h3>\r\n      <p>\r\n        Neutral and earthing arrangements can affect whether 2P, 3P or 4P switching is required.\r\n      <\/p>\r\n    <\/div>\r\n\r\n    <div class=\"ly-key-item\">\r\n      <h3>5. Confirm Transition Method<\/h3>\r\n      <p>\r\n        LEEYEE standard compact ATS applications are based on open-transition switching.\r\n      <\/p>\r\n    <\/div>\r\n\r\n    <div class=\"ly-key-item\">\r\n      <h3>6. Confirm Control Requirements<\/h3>\r\n      <p>\r\n        If generator-start coordination is required, verify the exact ATS model and generator-controller wiring documents.\r\n      <\/p>\r\n    <\/div>\r\n\r\n  <\/div>\r\n\r\n  <h3>Generator kVA Is Not the Same as ATS Current<\/h3>\r\n\r\n  <p>\r\n    Generator sets are often specified in kVA while an ATS is selected by current rating. For a simple three-phase apparent-power calculation:\r\n  <\/p>\r\n\r\n  <div class=\"ly-formula\">\r\n    <span class=\"ly-equation\">I = S \u00f7 (\u221a3 \u00d7 V)<\/span>\r\n    <span>100 kVA at 400 V \u2248 144 A<\/span>\r\n  <\/div>\r\n\r\n  <p>\r\n    This only converts apparent power to approximate line current. It does not by itself decide the correct ATS rating. The final selection should also consider the actual connected load, motor or compressor starting conditions, upstream protection, conductor sizing and project requirements.\r\n  <\/p>\r\n\r\n  <div class=\"ly-warning\">\r\n    <strong>Do not select the ATS from generator kVA alone.<\/strong> The generator may be oversized relative to the emergency load, and different load types can produce very different operating currents.\r\n  <\/div>\r\n\r\n  <h2><span class=\"ez-toc-section\" id=\"should-a-three-phase-gas-generator-use-a-3p-or-4p-ats\"><\/span>Should a Three-Phase Gas Generator Use a 3P or 4P ATS?<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n  <p>\r\n    There is no safe universal answer without the system drawing.\r\n  <\/p>\r\n\r\n  <p>\r\n    Whether the neutral should be switched depends on the earthing arrangement, generator neutral treatment, bonding method, protective-device design and applicable project rules. These conditions should be confirmed by the responsible electrical designer before the ATS pole configuration is fixed.\r\n  <\/p>\r\n\r\n  <p>\r\n    For an OEM panel order, send the single-line diagram and neutral arrangement rather than asking the ATS supplier to guess from \u201cthree-phase generator\u201d alone.\r\n  <\/p>\r\n\r\n  <h2><span class=\"ez-toc-section\" id=\"what-gas-generator-conditions-are-outside-the-ats-scope\"><\/span>What Gas-Generator Conditions Are Outside the ATS Scope?<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n  <p>\r\n    A gas generator backup project includes fuel, engine and installation requirements that should not be described as ATS functions.\r\n  <\/p>\r\n\r\n  <div class=\"ly-checklist\">\r\n    <strong>Confirm separately with the generator supplier and project engineer:<\/strong>\r\n    <ul>\r\n      <li>Fuel gas type<\/li>\r\n      <li>Required gas pressure and flow<\/li>\r\n      <li>Regulator selection<\/li>\r\n      <li>Gas piping design<\/li>\r\n      <li>Combustion-air requirements<\/li>\r\n      <li>Ventilation<\/li>\r\n      <li>Exhaust arrangement<\/li>\r\n      <li>Generator enclosure or room design<\/li>\r\n      <li>Applicable fire-safety requirements<\/li>\r\n      <li>Local gas and electrical regulations<\/li>\r\n    <\/ul>\r\n  <\/div>\r\n\r\n  <p>\r\n    These conditions affect whether the complete standby generator system can operate safely and reliably, but they are not functions performed by the compact ATS.\r\n  <\/p>\r\n\r\n  <h2><span class=\"ez-toc-section\" id=\"common-gas-generator-ats-specification-mistakes\"><\/span>Common Gas Generator ATS Specification Mistakes<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n  <h3>Choosing by Fuel Type Instead of Electrical Ratings<\/h3>\r\n  <p>\r\n    \u201cGas generator\u201d does not tell the ATS supplier the voltage, current, phase, pole arrangement or controller interface.\r\n  <\/p>\r\n\r\n  <h3>Assuming Every ATS Has the Same Generator Start Output<\/h3>\r\n  <p>\r\n    Do not assume a remote-start terminal or dry contact exists from the product category alone. Check the exact LEEYEE ATS model documentation and the generator-controller requirements.\r\n  <\/p>\r\n\r\n  <h3>Assuming Generator Running Means Ready for Load<\/h3>\r\n  <p>\r\n    Engine start and alternate-source acceptance are separate stages. The transfer logic should confirm the generator source meets the required electrical conditions before connecting the load. <a class=\"ly-ref\" href=\"#ref-2\">[2]<\/a>\r\n  <\/p>\r\n\r\n  <h3>Using a Fixed Warm-Up Time from Another Project<\/h3>\r\n  <p>\r\n    Delay settings vary by equipment and application. A value documented for one ATS or generator should not be treated as universal. <a class=\"ly-ref\" href=\"#ref-3\">[3]<\/a>\r\n  <\/p>\r\n\r\n  <h3>Ignoring Neutral and Earthing Details<\/h3>\r\n  <p>\r\n    Selecting 3P or 4P from phase count alone can be incorrect. Neutral treatment needs project-level confirmation.\r\n  <\/p>\r\n\r\n  <h3>Treating the ATS as a Gas-Engine Controller<\/h3>\r\n  <p>\r\n    The ATS transfers electrical sources. Gas supply, engine starting, combustion and generator-specific protection belong to the generator system.\r\n  <\/p>\r\n\r\n  <h2><span class=\"ez-toc-section\" id=\"before-ordering-gas-generator-ats-confirmation-checklist\"><\/span>Before Ordering: Gas Generator ATS Confirmation Checklist<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n  <div class=\"ly-checklist\">\r\n    <p>\r\n      For a useful ATS recommendation, prepare the following information:\r\n    <\/p>\r\n\r\n    <ul>\r\n      <li>Utility nominal voltage<\/li>\r\n      <li>Generator output voltage<\/li>\r\n      <li>Single-phase or three-phase system<\/li>\r\n      <li>System frequency<\/li>\r\n      <li>Generator rated kVA or kW<\/li>\r\n      <li>Actual or design load current<\/li>\r\n      <li>Important load types, such as motors, pumps or compressors<\/li>\r\n      <li>Required 2P, 3P or 4P configuration<\/li>\r\n      <li>Neutral and earthing arrangement<\/li>\r\n      <li>Generator controller manufacturer and model<\/li>\r\n      <li>Required automatic-start interface, if applicable<\/li>\r\n      <li>Utility-generator-load single-line diagram<\/li>\r\n      <li>Required standard or certification<\/li>\r\n      <li>Order quantity<\/li>\r\n      <li>OEM label or private-label requirements where applicable<\/li>\r\n    <\/ul>\r\n  <\/div>\r\n\r\n  <div class=\"ly-cta\">\r\n    <h3>Need to Confirm a Gas Generator ATS Configuration?<\/h3>\r\n\r\n    <p>\r\n      Send the voltage, phase, load current, pole requirement, generator-controller model and project diagram. LEEYEE can review whether a compact open-transition ATS configuration matches the electrical transfer requirements of the project.\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 Gas Generator ATS Review\">\r\n      <span class=\"w-btn-label\">Request Gas Generator ATS Review<\/span>\r\n    <\/button>\r\n  <\/div>\r\n\r\n  <h2><span class=\"ez-toc-section\" id=\"frequently-asked-questions\"><\/span>Frequently Asked Questions<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 a LEEYEE ATS automatically start a natural gas generator?<\/h3>\r\n      <p>\r\n        Automatic generator-start coordination depends on the exact ATS model and generator controller. Do not assume every compact ATS has the same remote-start interface. Confirm the model-specific wiring diagram before approval.\r\n      <\/p>\r\n    <\/div>\r\n\r\n    <div class=\"ly-faq-item\">\r\n      <h3>Can any ATS work with any gas generator?<\/h3>\r\n      <p>\r\n        No. Electrical ratings and any required generator-control interface must be compatible. Confirm voltage, phase, current, poles, transition method and controller wiring before approval.\r\n      <\/p>\r\n    <\/div>\r\n\r\n    <div class=\"ly-faq-item\">\r\n      <h3>Does the ATS control the gas valve or gas pressure?<\/h3>\r\n      <p>\r\n        No. Those are generator and fuel-system functions. The ATS is the electrical source-transfer device.\r\n      <\/p>\r\n    <\/div>\r\n\r\n    <div class=\"ly-faq-item\">\r\n      <h3>How does an ATS know when the generator source is acceptable?<\/h3>\r\n      <p>\r\n        Transfer-control systems use source-sensing logic according to their design. Exact voltage, frequency, timing and other acceptance functions depend on the selected equipment and should be confirmed from the relevant documentation. <a class=\"ly-ref\" href=\"#ref-2\">[2]<\/a>\r\n      <\/p>\r\n    <\/div>\r\n\r\n    <div class=\"ly-faq-item\">\r\n      <h3>Does a gas generator always need the same warm-up delay?<\/h3>\r\n      <p>\r\n        No. There is no universal warm-up time based only on fuel type. Delay settings should follow the generator, ATS\/controller and project requirements. <a class=\"ly-ref\" href=\"#ref-2\">[2]<\/a><a class=\"ly-ref\" href=\"#ref-3\">[3]<\/a>\r\n      <\/p>\r\n    <\/div>\r\n\r\n    <div class=\"ly-faq-item\">\r\n      <h3>Can the same type of ATS be used for gas and diesel generators?<\/h3>\r\n      <p>\r\n        It may be possible when the voltage, phase, load current, pole arrangement, transition requirements and control arrangement are compatible. Fuel type alone does not establish compatibility.\r\n      <\/p>\r\n    <\/div>\r\n\r\n    <div class=\"ly-faq-item\">\r\n      <h3>What size ATS do I need for a gas generator?<\/h3>\r\n      <p>\r\n        Start with the actual electrical load, system voltage and phase rather than generator fuel. Also check motor starting, upstream protection and project requirements before finalizing the rating.\r\n      <\/p>\r\n    <\/div>\r\n\r\n    <div class=\"ly-faq-item\">\r\n      <h3>Should I choose 3P or 4P for a three-phase gas generator?<\/h3>\r\n      <p>\r\n        Confirm whether the neutral must be switched. Earthing arrangement, generator neutral treatment, bonding and protection design can affect the decision.\r\n      <\/p>\r\n    <\/div>\r\n\r\n    <div class=\"ly-faq-item\">\r\n      <h3>Is the LEEYEE compact ATS open transition?<\/h3>\r\n      <p>\r\n        LEEYEE standard compact ATS applications are based on open-transition switching. Projects requiring closed transition, bypass isolation or other advanced transfer architectures need a different engineered solution.\r\n      <\/p>\r\n    <\/div>\r\n\r\n  <\/div>\r\n\r\n  <h2><span class=\"ez-toc-section\" id=\"engineering-takeaway\"><\/span>Engineering Takeaway<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n  <p>\r\n    The correct question is not simply \u201cDoes this ATS work with a gas generator?\u201d The useful engineering question is:\r\n    <strong>Do the electrical ratings, neutral arrangement, transfer method and any required generator-control interface match the complete backup-power design?<\/strong>\r\n  <\/p>\r\n\r\n  <p>\r\n    For LEEYEE compact 2P and 4P open-transition ATS applications, confirm the system voltage, phase, current, poles, generator controller and project drawing before ordering. Gas supply, engine operation, ventilation and fuel-system engineering remain separate generator-project responsibilities.\r\n  <\/p>\r\n\r\n  <div class=\"ly-related\">\r\n    <strong>Related technical guide<\/strong>\r\n    <a href=\"https:\/\/www.cnspd.com\/what-is-an-automatic-transfer-switch-how-ats-works-how-to-choose\/\">\r\n      What Is an Automatic Transfer Switch? How ATS Works &amp; How to Choose\r\n    <\/a>\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    <ol>\r\n      <li id=\"ref-1\">\r\n        International Electrotechnical Commission (IEC),\r\n        <em>IEC 60947-6-1:2026 \u2014 Low-voltage switchgear and controlgear \u2014 Part 6-1: Multiple function equipment \u2014 Transfer switching equipment<\/em>.\r\n        <a href=\"https:\/\/webstore.iec.ch\/en\/publication\/90494\" target=\"_blank\" rel=\"noopener noreferrer\">IEC official publication page<\/a>.\r\n      <\/li>\r\n\r\n      <li id=\"ref-2\">\r\n        Cummins Inc.,\r\n        <em>Application Manual \u2014 Transfer Switches, Transfer Equipment Controls<\/em>.\r\n        The manual describes normal-source monitoring, generator-start coordination, generator voltage build-up, transfer delays and retransfer logic in generator-backed transfer systems.\r\n        <a href=\"https:\/\/incal.cummins.com\/www\/literature\/applicationmanuals\/t-011_p38-48.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">Cummins transfer-switch application manual<\/a>.\r\n      <\/li>\r\n\r\n      <li id=\"ref-3\">\r\n        Schneider Electric \/ ASCO,\r\n        <em>Generator test with load transfer for a 165 Series ATS<\/em>.\r\n        This manufacturer-specific example illustrates why transfer and warm-up timing must be confirmed for the actual equipment rather than copied as a universal setting.\r\n        <a href=\"https:\/\/www.se.com\/uk\/en\/faqs\/FAQ000233188\/\" target=\"_blank\" rel=\"noopener noreferrer\">Schneider Electric technical FAQ<\/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          '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>\n\t\t","protected":false},"excerpt":{"rendered":"<p>A gas generator can work with an automatic transfer switch, but selecting the ATS is not simply a matter of choosing a \u201cgenerator ATS.\u201d For generator-set integrators, panel builders, contractors and project buyers, the critical issue is whether the electrical ratings, pole configuration and generator-control interface all match the backup system. Quick Answer: What ATS&#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-31652","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>Gas Generator ATS Selection &amp; Controller Guide | LEEYEE<\/title>\n<meta name=\"description\" content=\"Learn how to select a compact ATS for a gas generator backup system, including voltage, current, 2P\/4P selection, controller compatibility, transfer logic and project confirmation.\" \/>\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\/gas-generator-ats\/\" \/>\n<meta property=\"og:locale\" content=\"id_ID\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Gas Generator ATS Selection &amp; 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