{"id":1018,"date":"2026-10-24T20:13:16","date_gmt":"2026-10-24T20:13:16","guid":{"rendered":"https:\/\/subiapower.com\/?page_id=1018"},"modified":"2026-11-12T14:42:31","modified_gmt":"2026-11-12T14:42:31","slug":"pad-mounted-transformers","status":"publish","type":"page","link":"https:\/\/subiapower.com\/ru\/transformers\/pad-mounted-transformers\/","title":{"rendered":"\u0422\u0440\u0430\u043d\u0441\u0444\u043e\u0440\u043c\u0430\u0442\u043e\u0440\u044b \u043a\u0438\u043e\u0441\u043a\u043e\u0432\u043e\u0433\u043e \u0442\u0438\u043f\u0430"},"content":{"rendered":"\n<style id=\"subia-oil-template-style\">#subia-oil-template{display:block;width:100%;max-width:none;margin:0;padding:0;background:#fff;text-align:start;text-transform:none;letter-spacing:normal;overflow:visible}\n#subia-oil-template,#subia-oil-template *,#subia-oil-template *::before,#subia-oil-template *::after{box-sizing:border-box}\n#subia-oil-template 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var(--line)}\n#subia-oil-template .series-product:last-child{padding-bottom:0;border-bottom:0}\n#subia-oil-template .product-photo img{height:310px}\n#subia-oil-template .product-photo{margin-bottom:22px}\n#subia-oil-template .series-product h3{font-size:27px;min-height:0;max-width:22ch}\n#subia-oil-template .series-product p{font-size:15px}\n#subia-oil-template .series-product .series-range{font-size:13px}\n#subia-oil-template .text-link{min-height:44px;font-size:14px}\n#subia-oil-template .table-wrap table{min-width:660px}\n#subia-oil-template table{font-size:14px;line-height:1.6}\n#subia-oil-template th,#subia-oil-template td{padding:15px}\n#subia-oil-template caption{font-size:13px;padding:14px 15px}\n#subia-oil-template .model-code summary{font-size:16px;padding:22px 0}\n#subia-oil-template .construction-grid{gap:30px}\n#subia-oil-template .process-photo img{height:300px;object-position:55% center}\n#subia-oil-template .technical-list{grid-template-columns:1fr;gap:0;margin-top:30px}\n#subia-oil-template .technical-list>div{grid-template-columns:33fr 67fr;gap:22px;padding:23px 0}\n#subia-oil-template .technical-list dt{font-size:16px}\n#subia-oil-template .technical-list dd,#subia-oil-template .technical-list dd span{font-size:14px}\n#subia-oil-template .split-section,#subia-oil-template .high-voltage-grid{grid-template-columns:1fr;gap:30px;margin-bottom:30px}\n#subia-oil-template .split-section .equipment-figure{order:-1}\n#subia-oil-template .equipment-figure img{height:370px}\n#subia-oil-template .equipment-figure figcaption{font-size:11px}\n#subia-oil-template .performance-grid{gap:32px}\n#subia-oil-template .action-row{gap:18px;flex-direction:column;align-items:flex-start}\n#subia-oil-template .document-row{align-items:flex-start;gap:20px;flex-direction:column;padding:25px 0}\n#subia-oil-template .document-row strong{font-size:18px}\n#subia-oil-template .document-row small{font-size:13px}\n#subia-oil-template .document-action{min-height:40px;font-size:14px}\n#subia-oil-template .document-footnote{font-size:14px;margin-top:25px}\n#subia-oil-template .rfq>.rail{grid-template-columns:1fr;gap:30px}\n#subia-oil-template .rfq .button{justify-self:start}\n#subia-oil-template .rfq p{font-size:15px}\n#subia-oil-template .oil-modal{width:100vw;height:100dvh;max-height:100dvh;margin:0;box-shadow:none}\n#subia-oil-template .oil-modal>header{padding:18px 16px;gap:18px}\n#subia-oil-template .oil-modal>header h2{font-size:21px;letter-spacing:-.025em}\n#subia-oil-template .oil-modal>header .icon-button{width:42px;height:42px}\n#subia-oil-template .modal-tabs{padding:0 16px;gap:25px;overflow:auto}\n#subia-oil-template .modal-tabs button{font-size:13px;padding:16px 0}\n#subia-oil-template [data-modal-scroll]{padding:22px 16px}\n#subia-oil-template .modal-overview{display:flex;flex-direction:column;gap:30px}\n#subia-oil-template .modal-gallery{width:100%}\n#subia-oil-template .gallery-stage{height:290px}\n#subia-oil-template .gallery-thumbs{gap:8px}\n#subia-oil-template .gallery-thumbs button{width:70px;height:64px}\n#subia-oil-template .modal-overview p{font-size:15px}\n#subia-oil-template .oil-modal>footer{padding:14px 16px;gap:16px}\n#subia-oil-template .oil-modal>footer>span{display:none}\n#subia-oil-template .oil-modal>footer .button{width:100%;min-height:48px}\n#subia-oil-template .modal-facts>div{grid-template-columns:42fr 58fr;gap:18px}\n#subia-oil-template .rating-toolbar{gap:15px;align-items:flex-start;flex-direction:column;margin-top:28px}\n#subia-oil-template .rating-toolbar label{gap:12px;flex-wrap:wrap}\n#subia-oil-template .rating-toolbar select{font-size:16px}\n#subia-oil-template .rating-toolbar p{font-size:13px}\n#subia-oil-template .scroll-hint{font-size:12px}\n#subia-oil-template .oil-modal .document-row{padding-block:20px}\n#subia-oil-template .oil-modal .document-row strong{font-size:17px}\n#subia-oil-template .oil-modal .table-wrap table{min-width:600px}\n#subia-oil-template .oil-modal [data-rating-matrix]{min-width:1050px}\n}\n@media(max-width:360px){\n#subia-oil-template .oil-hero h1{font-size:37px}\n#subia-oil-template .oil-hero{min-height:510px}\n#subia-oil-template .product-photo img{height:270px}\n#subia-oil-template .equipment-figure img{height:310px}\n#subia-oil-template .oil-modal>header h2{font-size:19px}\n#subia-oil-template .modal-tabs{gap:22px}\n}\n#subia-oil-template .section-heading>*,#subia-oil-template .construction-grid>*,#subia-oil-template .split-section>*,#subia-oil-template .performance-grid>*,#subia-oil-template .high-voltage-grid>*,#subia-oil-template .modal-overview>*{min-width:0}\n#subia-oil-template .oil-modal [data-modal-panel=technical] table:not([data-rating-matrix]){min-width:0}\n#subia-oil-template a:hover,#subia-oil-template .text-link:hover{color:var(--slate)}\n#subia-oil-template .button-orange:hover{background:var(--slate);border-color:var(--slate);color:#fff}\n#subia-oil-template .hero-caption{font-size:11px}\n@media(min-width:768px) and (max-width:1000px){\n#subia-oil-template .app-explorer.is-interactive .app-panel-image{grid-row:1}\n#subia-oil-template .app-explorer.is-interactive .app-panel-image img{height:auto;min-height:0}\n#subia-oil-template .app-explorer.is-interactive .app-panel-copy{grid-column:1\/-1;grid-row:2;align-self:start;max-width:90ch}\n#subia-oil-template .app-tab{min-height:90px;padding:14px 12px}\n}\n@media(prefers-reduced-motion:reduce){\n#subia-oil-template *,#subia-oil-template *::before,#subia-oil-template *::after{scroll-behavior:auto!important;transition:none!important}\n}\n@media print{\n#subia-oil-template .section-nav,#subia-oil-template .oil-modal,#subia-oil-template .text-link,#subia-oil-template .button{display:none!important}\n#subia-oil-template .rail{width:100%}\n#subia-oil-template .oil-hero{min-height:270px}\n#subia-oil-template .oil-section{padding:30px 0}\n#subia-oil-template .table-wrap{overflow:visible}\n#subia-oil-template .table-wrap table{font-size:10px;min-width:0}\n#subia-oil-template .oil-section{break-inside:avoid}\n#subia-oil-template h2{font-size:26px}\n}\n#subia-oil-template .oil-modal .modal-document-link{font-size:13px;gap:12px;flex-shrink:0}\n@media(max-width:700px){\n#subia-oil-template .oil-modal>footer{flex-wrap:wrap;justify-content:center;gap:10px}\n#subia-oil-template .oil-modal .modal-document-link{font-size:12px}\n}\n#subia-oil-template .app-section .section-heading{margin-bottom:46px;align-items:start}\n#subia-oil-template .app-section .section-heading>p{max-width:64ch}\n#subia-oil-template .app-scenes{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:34px}\n#subia-oil-template .app-scene{min-width:0}\n#subia-oil-template .app-scene-image{margin:0 0 26px;overflow:hidden;background:var(--paper)}\n#subia-oil-template .app-scene-image img{display:block;width:100%;height:auto;aspect-ratio:3\/2;object-fit:cover}\n#subia-oil-template .app-scene h3{font-size:25px;line-height:1.3;letter-spacing:-.025em;margin:0 0 16px;max-width:22ch}\n#subia-oil-template .app-scene p{font-size:15px;line-height:1.8;max-width:46ch;margin:0}\n#subia-oil-template .app-image-note{font-size:12px;line-height:1.6;color:#536b74;margin:28px 0 0}\n#subia-oil-template .site-conditions-section{border-bottom:1px solid var(--line)}\n#subia-oil-template .site-conditions-layout{display:grid;grid-template-columns:35fr 65fr;gap:76px;align-items:start}\n#subia-oil-template .site-conditions-layout>*{min-width:0}\n#subia-oil-template .site-conditions-intro h2{max-width:12ch}\n#subia-oil-template .site-conditions-intro p{font-size:15px;line-height:1.8;max-width:44ch}\n#subia-oil-template .site-condition-list{margin:0}\n#subia-oil-template .site-condition-list>div{display:grid;grid-template-columns:28fr 72fr;gap:30px;padding:25px 0;border-top:1px solid #c5d5d9}\n#subia-oil-template .site-condition-list>div:last-child{border-bottom:1px solid #c5d5d9}\n#subia-oil-template .site-condition-list dt{font-size:18px;line-height:1.45;font-weight:550;color:var(--slate)}\n#subia-oil-template .site-condition-list dd{margin:0;min-width:0}\n#subia-oil-template .site-condition-list dd>p{font-size:15px;line-height:1.65;margin:0}\n#subia-oil-template .site-condition-list .site-design-review{font-size:13px;color:#536b74;margin-top:12px}\n#subia-oil-template .site-design-review>span{display:block;font-size:11px;font-weight:550;color:var(--teal);margin-bottom:3px}\n@media(max-width:1200px){\n#subia-oil-template .app-scenes{gap:26px}\n#subia-oil-template .app-scene h3{font-size:23px}\n#subia-oil-template .site-conditions-layout{gap:45px;grid-template-columns:36fr 64fr}\n#subia-oil-template .site-condition-list>div{grid-template-columns:30fr 70fr;gap:24px}\n}\n@media(max-width:1000px){\n#subia-oil-template .app-scenes{gap:22px}\n#subia-oil-template .app-scene h3{font-size:21px}\n#subia-oil-template .app-scene p{font-size:14px}\n#subia-oil-template .site-conditions-layout{grid-template-columns:1fr;gap:34px}\n#subia-oil-template .site-conditions-intro h2{max-width:none}\n#subia-oil-template .site-conditions-intro p{max-width:80ch}\n#subia-oil-template .site-condition-list>div{grid-template-columns:27fr 73fr}\n}\n@media(max-width:767px){\n#subia-oil-template .app-section .section-heading{margin-bottom:32px}\n#subia-oil-template .app-scenes{grid-template-columns:1fr;gap:42px}\n#subia-oil-template .app-scene-image{margin-bottom:22px}\n#subia-oil-template .app-scene h3{font-size:26px;margin-bottom:14px;max-width:none}\n#subia-oil-template .app-scene p{font-size:15px;max-width:none}\n#subia-oil-template .app-image-note{margin-top:26px;font-size:12px}\n#subia-oil-template .site-conditions-layout{gap:30px}\n#subia-oil-template .site-conditions-intro p{font-size:15px}\n#subia-oil-template 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.balanced-copy-3{grid-template-columns:repeat(3,minmax(0,1fr))}\n#subia-oil-template .balanced-copy>div{min-width:0}\n#subia-oil-template .balanced-copy h3{font-size:21px;line-height:1.35;letter-spacing:-.02em;margin:0 0 18px}\n#subia-oil-template .balanced-copy p{font-size:16px;line-height:1.8;margin:0;max-width:74ch}\n#subia-oil-template .balanced-section.dark .balanced-copy h3{color:#fff}\n#subia-oil-template .balanced-section .balanced-copy+.technical-list{margin-top:0}\n#subia-oil-template .app-explorer{min-width:0}\n#subia-oil-template .app-explorer .app-tabs{display:none}\n#subia-oil-template .app-panels{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:34px;min-width:0}\n#subia-oil-template .app-panel{min-width:0}\n#subia-oil-template .app-panel-image{margin:0 0 25px;background:var(--paper);overflow:hidden}\n#subia-oil-template .app-panel-image img{display:block;width:100%;height:auto;aspect-ratio:3\/2;object-fit:cover}\n#subia-oil-template .app-panel-copy h3{font-size:26px;line-height:1.3;letter-spacing:-.025em;margin:0 0 16px}\n#subia-oil-template .app-panel-copy p{font-size:15px;line-height:1.8;margin:0;max-width:74ch}\n#subia-oil-template .app-explorer.is-interactive{display:grid;grid-template-columns:minmax(0,65fr) minmax(0,35fr);grid-template-rows:auto 1fr;gap:36px 48px;align-items:start}\n#subia-oil-template .app-explorer.is-interactive .app-panels{display:contents}\n#subia-oil-template .app-explorer.is-interactive .app-panel{display:grid;grid-column:1\/-1;grid-row:1\/3;grid-template-columns:subgrid;grid-template-rows:subgrid}\n#subia-oil-template .app-explorer.is-interactive .app-panel-image{grid-column:1;grid-row:1\/3;margin:0;align-self:stretch}\n#subia-oil-template .app-explorer.is-interactive .app-panel-image img{height:100%;min-height:100%;object-fit:cover}\n#subia-oil-template .app-explorer.is-interactive .app-panel-copy{grid-column:2;grid-row:2;align-self:end}\n#subia-oil-template .app-explorer.is-interactive .app-tabs{display:flex;flex-direction:column;grid-column:2;grid-row:1;align-self:start;min-width:0;position:relative;z-index:1}\n#subia-oil-template .app-tab{display:grid;grid-template-columns:88px minmax(0,1fr) 20px;gap:18px;align-items:center;width:100%;min-height:112px;padding:18px 16px;border:0;border-bottom:1px solid var(--line);background:transparent;color:var(--slate);text-align:left;font:550 19px\/1.45 Lexend,sans-serif;transition:background .18s ease,color .18s ease,border-color .18s ease}\n#subia-oil-template .app-tab:first-child{border-top:1px solid var(--line)}\n#subia-oil-template .app-tab img{display:block;width:88px;height:auto;aspect-ratio:3\/2;object-fit:cover}\n#subia-oil-template .app-tab>svg{display:block;width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.6}\n#subia-oil-template .app-tab:hover{background:#edf3f4;color:var(--teal)}\n#subia-oil-template .app-tab[aria-selected=\"true\"]{background:var(--paper);color:var(--teal);border-bottom-color:var(--teal)}\n#subia-oil-template .app-explorer.is-interactive .app-panel-copy h3{font-size:29px}\n#subia-oil-template .app-explorer.is-interactive .app-panel[hidden]{display:none}\n#subia-oil-template .site-conditions-header .balanced-copy{margin-bottom:46px}\n#subia-oil-template .site-condition-accordion{border-top:1px solid #c5d5d9}\n#subia-oil-template .site-condition{--site-title-column:30%;border-bottom:1px solid #c5d5d9}\n#subia-oil-template .site-condition summary{list-style:none;display:grid;grid-template-columns:var(--site-title-column) minmax(0,1fr) 24px;gap:30px;align-items:start;padding:26px 0;cursor:pointer;transition:color .15s ease}\n#subia-oil-template .site-condition summary::-webkit-details-marker{display:none}\n#subia-oil-template .site-condition-title{font-size:19px;font-weight:550;line-height:1.45;color:var(--slate)}\n#subia-oil-template .site-condition-input{font-size:16px;line-height:1.7;color:var(--copy)}\n#subia-oil-template .site-condition summary:hover .site-condition-title{color:var(--teal)}\n#subia-oil-template .site-condition-toggle{width:24px;height:24px;fill:none;stroke:var(--teal);stroke-width:1.5;flex-shrink:0;margin-top:2px}\n#subia-oil-template .site-condition-toggle .site-toggle-vertical{transform-origin:center;transition:transform .18s ease,opacity .18s ease}\n#subia-oil-template .site-condition[open] .site-toggle-vertical{transform:rotate(90deg);opacity:0}\n#subia-oil-template .site-condition[open] summary{padding-bottom:18px}\n#subia-oil-template .site-condition-body{padding:0 54px 26px calc(var(--site-title-column) + 30px)}\n#subia-oil-template .site-condition-body .site-design-review{font-size:14px;line-height:1.7;color:#536b74;margin:0}\n#subia-oil-template .site-condition-body .site-design-review>span{font-size:12px;margin-bottom:5px}\n#subia-oil-template .section-nav a[aria-current=\"location\"]{border-bottom-color:var(--teal);color:var(--teal)}\n#subia-oil-template .section-nav::after{content:\"\";position:absolute;bottom:-1px;left:0;width:100%;height:2px;background:var(--teal);transform:scaleX(var(--reading-progress,0));transform-origin:left center;pointer-events:none}\n@media(max-width:1200px){\n#subia-oil-template .balanced-copy{gap:34px}\n#subia-oil-template .app-explorer.is-interactive{grid-template-columns:minmax(0,63fr) minmax(0,37fr);gap:32px}\n#subia-oil-template .app-tab{grid-template-columns:82px minmax(0,1fr) 18px;gap:14px;padding:20px 12px;font-size:17px;min-height:114px}\n#subia-oil-template .app-tab img{width:82px}\n#subia-oil-template .app-tab>svg{width:18px}\n#subia-oil-template .site-condition{--site-title-column:28%}\n}\n@media(max-width:1000px){\n#subia-oil-template .balanced-copy-3{grid-template-columns:repeat(2,minmax(0,1fr))}\n#subia-oil-template .balanced-copy-3>div:last-child{grid-column:1\/-1;max-width:90ch}\n#subia-oil-template .balanced-copy h3{font-size:20px}\n#subia-oil-template .balanced-copy p{font-size:15px}\n#subia-oil-template .app-explorer.is-interactive{grid-template-columns:minmax(0,60fr) minmax(0,40fr);gap:24px}\n#subia-oil-template .app-tab{grid-template-columns:68px minmax(0,1fr);gap:14px;font-size:16px;min-height:102px;padding:18px 12px}\n#subia-oil-template .app-tab img{width:68px}\n#subia-oil-template .app-tab>svg{display:none}\n#subia-oil-template .app-explorer.is-interactive .app-panel-copy h3{font-size:26px}\n#subia-oil-template .site-condition summary{gap:22px}\n#subia-oil-template .site-condition-body{padding-left:calc(var(--site-title-column) + 22px)}\n}\n@media(max-width:767px){\n#subia-oil-template .balanced-section .balanced-heading,#subia-oil-template .site-conditions-header .balanced-heading{margin-bottom:30px}\n#subia-oil-template .balanced-copy,#subia-oil-template 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.anchor-alias{display:block;height:0}\n#subia-oil-template .anchor-alias,#subia-oil-template .series-product[id]{scroll-margin-top:max(180px,calc(var(--oil-header-offset,0px) + var(--oil-nav-height,65px) + 24px))}\n#subia-oil-template{--oil-header-offset:0px;--oil-nav-height:65px}\n#subia-oil-template .section-nav{top:var(--oil-header-offset)}\n#subia-oil-template .oil-section{scroll-margin-top:calc(var(--oil-header-offset) + var(--oil-nav-height))}\n@media(max-width:767px){#subia-oil-template{--oil-nav-height:57px}}\n\n\/* subia legacy fragment compatibility v1 *\/\n#subia-oil-template .anchor-alias{display:block;height:0}#subia-oil-template .oil-section[id],#subia-oil-template .anchor-alias,#subia-oil-template .series-product[id]{scroll-margin-top:max(180px,calc(var(--oil-header-offset,0px) + var(--oil-nav-height,65px) + 24px))}\n@media(max-width:767px){#subia-oil-template .table-wrap table.property-table{min-width:0;width:100%;table-layout:fixed}#subia-oil-template .table-wrap table.property-table th:first-child{width:40%}#subia-oil-template .table-wrap table.property-table th,#subia-oil-template .table-wrap table.property-table td{overflow-wrap:anywhere}}\n<\/style>\n<div id=\"subia-oil-template\" class=\"subia-oil-template alignfull rd-page-1018\">\n<section class=\"oil-hero\"><img decoding=\"async\" class=\"hero-scene\" src=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/09\/subia-group-production-workshop.webp\" alt=\"Transformer manufacturing workshop\" width=\"2000\" height=\"1333\" fetchpriority=\"high\"><div class=\"hero-shade\"><\/div><div class=\"rail hero-content\"><h1>Pad-mounted<br>Transformers<\/h1><p>Compact outdoor distribution<br class=\"desktop-break\"> with enclosed cable connections.<\/p><\/div><div class=\"rail hero-caption\">Transformer manufacturing workshop<\/div><\/section><nav class=\"section-nav\" aria-label=\"On this page\"><div class=\"rail\"><a href=\"#series\">Series<\/a><a href=\"#electrical-range\">Electrical range<\/a><a href=\"#performance\">Technical data<\/a><a href=\"#construction\">Construction<\/a><a href=\"#applications\">Applications<\/a><a href=\"#documents\">Documents<\/a><\/div><\/nav><p class=\"rail product-error\" data-product-error role=\"status\" hidden><\/p><section class=\"sc-section oil-section series-section rd-exhibition\" id=\"series\"><div class=\"rail\"><span class=\"anchor-alias\" id=\"series-products\" aria-hidden=\"true\"><\/span><div class=\"section-heading\"><h2>ZGS pad-mounted<br>transformers<\/h2><p>150, 500 and 1,000 kVA configurations for three-phase distribution. Series photographs illustrate enclosure designs; each technical panel identifies the electrical configuration.<\/p><\/div><div class=\"sc-grid series-grid\" data-product-count=\"3\" data-sc-count=\"3\"><article class=\"series-product sc-card\" data-sc-card=\"1\" id=\"record-pad-zgs-150\"><p class=\"rd-capacity\">150<small>kVA<\/small><\/p><button aria-label=\"View ZGS 150 kVA\" class=\"product-photo sc-card-media\" data-open-product=\"pad-zgs-150\" type=\"button\"><span aria-hidden=\"true\" class=\"sc-brand\"><\/span><span class=\"sc-art sc-art-img\" style=\"--sc-ratio:0.9918699187;--sc-source-width:157.3770491803%;--sc-source-left:-29.0163934426%;--sc-source-top:-35.6097560976%\"><span class=\"sc-art-window\"><img alt=\"ZGS 150 kVA\" class=\"sc-source\" decoding=\"async\" height=\"960\" loading=\"lazy\" src=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-transformers-20261025-f082-960-50296cdc.webp\" width=\"960\"\/><\/span><\/span><\/button><div class=\"split-card-copy\"><div class=\"sc-card-heading\"><h3>ZGS 150 kVA<\/h3><\/div><div class=\"sc-card-meta\"><p class=\"series-range\">Three-phase \u00b7 150 kVA<\/p><\/div><div class=\"sc-card-description\"><p>150 kVA ZGS enclosure views and a separate 13.8 kV \/ 208 V, Dyn11 configuration with ONAN cooling.<\/p><\/div><div class=\"sc-card-action\"><button class=\"text-link\" data-open-product=\"pad-zgs-150\" data-start-tab=\"overview\" type=\"button\">View series details<svg aria-hidden=\"true\" viewbox=\"0 0 24 24\"><path d=\"M4 12h15m-6-6 6 6-6 6\"><\/path><\/svg><\/button><\/div><\/div><\/article><article class=\"series-product sc-card\" data-sc-card=\"2\" id=\"record-pad-zgs-500\"><p class=\"rd-capacity\">500<small>kVA<\/small><\/p><button aria-label=\"View ZGS 500 kVA\" class=\"product-photo sc-card-media\" data-open-product=\"pad-zgs-500\" type=\"button\"><span aria-hidden=\"true\" class=\"sc-brand\"><\/span><span class=\"sc-art sc-art-img\" style=\"--sc-ratio:1.1582733813;--sc-source-width:149.0683229814%;--sc-source-left:-26.0869565217%;--sc-source-top:-39.3884892086%\"><span class=\"sc-art-window\"><img alt=\"ZGS 500 kVA\" class=\"sc-source\" decoding=\"async\" height=\"960\" loading=\"lazy\" src=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-transformers-20261025-f091-960-e8f4b400.webp\" width=\"960\"\/><\/span><\/span><\/button><div class=\"split-card-copy\"><div class=\"sc-card-heading\"><h3>ZGS 500 kVA<\/h3><\/div><div class=\"sc-card-meta\"><p class=\"series-range\">Three-phase \u00b7 500 kVA<\/p><\/div><div class=\"sc-card-description\"><p>500 kVA ZGS enclosure views and a separate 13.8 kV \/ 208 V, Dyn11 configuration with ONAN cooling.<\/p><\/div><div class=\"sc-card-action\"><button class=\"text-link\" data-open-product=\"pad-zgs-500\" data-start-tab=\"overview\" type=\"button\">View series details<svg aria-hidden=\"true\" viewbox=\"0 0 24 24\"><path d=\"M4 12h15m-6-6 6 6-6 6\"><\/path><\/svg><\/button><\/div><\/div><\/article><article class=\"series-product sc-card\" data-sc-card=\"3\" id=\"record-pad-zgs-1000\"><p class=\"rd-capacity\">1,000<small>kVA<\/small><\/p><button aria-label=\"View ZGS 1,000 kVA\" class=\"product-photo sc-card-media\" data-open-product=\"pad-zgs-1000\" type=\"button\"><span aria-hidden=\"true\" class=\"sc-brand\"><\/span><span class=\"sc-art sc-art-img\" style=\"--sc-ratio:1.0581039755;--sc-source-width:138.7283236994%;--sc-source-left:-20.2312138728%;--sc-source-top:-29.9694189602%\"><span class=\"sc-art-window\"><img alt=\"ZGS 1,000 kVA\" class=\"sc-source\" decoding=\"async\" height=\"960\" loading=\"lazy\" src=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-transformers-20261025-f074-960-1b426e33.webp\" width=\"960\"\/><\/span><\/span><\/button><div class=\"split-card-copy\"><div class=\"sc-card-heading\"><h3>ZGS 1,000 kVA<\/h3><\/div><div class=\"sc-card-meta\"><p class=\"series-range\">Three-phase \u00b7 1,000 kVA<\/p><\/div><div class=\"sc-card-description\"><p>1,000 kVA ZGS enclosure views and a separate 13.8 kV \/ 208 V, Dyn11 configuration with ONAN cooling.<\/p><\/div><div class=\"sc-card-action\"><button class=\"text-link\" data-open-product=\"pad-zgs-1000\" data-start-tab=\"overview\" type=\"button\">View series details<svg aria-hidden=\"true\" viewbox=\"0 0 24 24\"><path d=\"M4 12h15m-6-6 6 6-6 6\"><\/path><\/svg><\/button><\/div><\/div><\/article><\/div><\/div><\/section><section class=\"oil-section paper balanced-section\" id=\"electrical-range\" data-source-section=\"electrical-range\"><div class=\"rail\"><h2 class=\"balanced-heading\">ZGS series and electrical scope<\/h2><div class=\"balanced-copy balanced-copy-2\"><div><h3>Integrated outdoor distribution<\/h3><p>ZGS transformers combine the transformer active part, an HV load-switch and fuse arrangement, and an LV connection compartment in a compact pad-mounted unit. The three-phase series serves above-ground distribution points for residential communities, commercial sites and industrial facilities.<\/p><\/div><div><h3>Available configurations<\/h3><p>The ZGS family covers 50\u20132,500 kVA at series level. The electrical tables on this page describe separate 150 kVA, 500 kVA and 1,000 kVA designs at 13.8 kV \/ 208 V. Enclosure photographs show series examples; voltage ratio, winding connection and electrical values belong to the selected configuration.<\/p><\/div><\/div><div class=\"table-wrap\" role=\"region\" tabindex=\"0\" aria-label=\"ZGS series scope\"><table class=\"pad-scope-matrix property-table\"><caption><span>ZGS series scope<\/span><strong>ZGS<\/strong><\/caption><thead><tr><th scope=\"col\">Property<\/th><th scope=\"col\">Series scope<\/th><\/tr><\/thead><tbody><tr class=\"scope-capacity\"><th scope=\"row\">Series capacity range<\/th><td>50\u20132,500 kVA<\/td><\/tr><tr><th scope=\"row\">Transformer type<\/th><td>Three-phase, oil-immersed, pad-mounted<\/td><\/tr><tr><th scope=\"row\">Cooling<\/th><td>ONAN \u2014 Oil Natural Air Natural<\/td><\/tr><tr><th scope=\"row\">Active part<\/th><td>Copper windings and silicon-steel core<\/td><\/tr><tr class=\"scope-installation\"><th scope=\"row\">Installation<\/th><td>Outdoor, above-ground cabinet on a prepared foundation<\/td><\/tr><\/tbody><\/table><\/div><div class=\"table-notes\"><p>The series range is distinct from the three 13.8 kV configurations detailed below. It is not a complete rated model schedule.<\/p><\/div><details class=\"model-code\"><summary>ZGS model designation<span aria-hidden=\"true\">+<\/span><\/summary><div><p>The ZGS designation identifies a combined, common-tank, three-phase transformer. The following fields specify the rated capacity and the high- and low-voltage winding ratings.<\/p><p>In the 1,000 kVA configuration sheet, ZGS-1000-13.8\/0.208 identifies the rated capacity and 13.8 kV \/ 208 V windings. The connection group, frequency and accessory arrangement complete the electrical and mechanical specification. A model label should be read together with its matching rated data.<\/p><div class=\"table-wrap\" role=\"region\" tabindex=\"0\" aria-label=\"Reading the ZGS designation\"><table class=\"property-table\"><caption>Reading the ZGS designation<\/caption><thead><tr><th scope=\"col\">Code or field<\/th><th scope=\"col\">Meaning<\/th><\/tr><\/thead><tbody><tr><th scope=\"row\">Z<\/th><td>Combined type<\/td><\/tr><tr><th scope=\"row\">G<\/th><td>Common-tank enclosure<\/td><\/tr><tr><th scope=\"row\">S<\/th><td>Three-phase<\/td><\/tr><tr><th scope=\"row\">Capacity<\/th><td>Rated apparent power in kVA<\/td><\/tr><tr><th scope=\"row\">HV \/ LV<\/th><td>Rated high- and low-voltage winding voltages<\/td><\/tr><\/tbody><\/table><\/div><div class=\"table-notes\"><\/div><\/div><\/details><\/div><\/section><section class=\"oil-section paper balanced-section rd-editorial\" id=\"construction\" data-source-section=\"tank-and-compartments\"><div class=\"rail\"><span class=\"anchor-alias\" id=\"enclosure\" aria-hidden=\"true\"><\/span><span class=\"anchor-alias\" id=\"tank\" aria-hidden=\"true\"><\/span><div class=\"pad-feed-construction\"><h2 class=\"construction-title\">Tank and connection compartments<\/h2><div class=\"construction-copy\"><p>The transformer core and windings operate in an oil-filled tank. Oil provides electrical insulation and transfers heat to the tank and cooling surfaces, where natural airflow removes it. ONAN operation uses this natural circulation arrangement without a forced-air fan system.<\/p><p>The cabinet houses the HV switching and connection arrangement together with the LV distribution interface. For the 13.8 kV configurations, the listed enclosure protection is IP54 and the construction uses copper windings and a silicon-steel core. The tank, cabinet doors and cable openings each have a role in the complete outdoor enclosure.<\/p><p>The front doors provide access to the connection area while the tank and external cooling surfaces sit behind it. Compartment access, cable-entry openings and terminal positions should be coordinated as one assembly. The front and open-door photographs illustrate this physical arrangement.<\/p><\/div><\/div>\n<div class=\"pad-feed-comparison\">\n  <figure class=\"pad-feed-photo pad-feed-photo--loop\">\n    <a class=\"pad-feed-photo-link\" href=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-transformers-20261025-f083-1600-82bfab36.webp\" aria-label=\"Enlarge the Loop Feed photo\">\n      <span class=\"pad-feed-photo-frame\"><img src=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-transformers-20261025-f083-960-3629af34.webp\" srcset=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-transformers-20261025-f083-480-8a2a18b9.webp 480w, https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-transformers-20261025-f083-960-3629af34.webp 960w\" sizes=\"auto, (max-width: 767px) 100vw, 58vw\" alt=\"Open Loop Feed cabinet with two sets of three primary phase connections\" width=\"960\" height=\"960\" loading=\"lazy\" decoding=\"async\"><\/span>\n      <span class=\"pad-feed-photo-action\" aria-hidden=\"true\">Enlarge photo<\/span>\n    <\/a>\n    <figcaption><h3>Loop Feed<\/h3><p>Two sets of primary connections for incoming and outgoing feeder cables.<\/p><\/figcaption>\n  <\/figure>\n  <figure class=\"pad-feed-photo pad-feed-photo--radial\">\n    <a class=\"pad-feed-photo-link\" href=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-transformers-20261025-f092-1600-fc0211ee.webp\" aria-label=\"Enlarge the Radial Feed photo\">\n      <span class=\"pad-feed-photo-frame\"><img src=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-transformers-20261025-f092-960-ead03bc7.webp\" srcset=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-transformers-20261025-f092-480-12aced02.webp 480w, https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-transformers-20261025-f092-960-ead03bc7.webp 960w\" sizes=\"auto, (max-width: 767px) 100vw, 58vw\" alt=\"Open Radial Feed cabinet with one set of three primary phase connections\" width=\"960\" height=\"960\" loading=\"lazy\" decoding=\"async\"><\/span>\n      <span class=\"pad-feed-photo-action\" aria-hidden=\"true\">Enlarge photo<\/span>\n    <\/a>\n    <figcaption><h3>Radial Feed<\/h3><p>One set of primary connections for an incoming feeder cable.<\/p><\/figcaption>\n  <\/figure>\n<\/div>\n<dialog id=\"pad-feed-photo-dialog\" aria-labelledby=\"pad-feed-photo-title\">\n  <div class=\"pad-feed-photo-dialog-bar\">\n    <strong id=\"pad-feed-photo-title\"><\/strong>\n    <form method=\"dialog\"><button type=\"submit\" class=\"pad-feed-photo-close\" autofocus>Close<\/button><\/form>\n  <\/div>\n  <div class=\"pad-feed-photo-viewport\" role=\"region\" aria-label=\"Enlarged photo\" tabindex=\"0\">\n    <div class=\"pad-feed-photo-frame\"><img width=\"1600\" height=\"1600\" alt=\"\"><\/div>\n  <\/div>\n<\/dialog>\n<div class=\"table-wrap\" role=\"region\" tabindex=\"0\" aria-label=\"Integrated construction\"><table class=\"property-table\"><caption>Integrated construction<\/caption><thead><tr><th scope=\"col\">Part<\/th><th scope=\"col\">Function and construction<\/th><\/tr><\/thead><tbody><tr><th scope=\"row\">Transformer active part<\/th><td>Copper windings and silicon-steel core immersed in insulating oil<\/td><\/tr><tr><th scope=\"row\">Oil tank<\/th><td>Contains the active part and insulating\/cooling oil<\/td><\/tr><tr><th scope=\"row\">HV arrangement<\/th><td>Load switch and fuse with the incoming cable interface<\/td><\/tr><tr><th scope=\"row\">LV compartment<\/th><td>Outgoing low-voltage connections and distribution interface<\/td><\/tr><tr><th scope=\"row\">Cooling arrangement<\/th><td>ONAN: natural oil circulation and natural airflow<\/td><\/tr><tr><th scope=\"row\">Outdoor enclosure<\/th><td>IP54 specified for the three 13.8 kV configurations<\/td><\/tr><\/tbody><\/table><\/div><div class=\"table-notes\"><\/div>\n<style id=\"subia-pad-feed-comparison-style\">\n#subia-oil-template #construction .pad-feed-construction .construction-copy {\n  display: grid;\n  gap: 16px 34px;\n  margin-block-start: clamp(20px, 2.4vw, 32px);\n}\n#subia-oil-template #construction .pad-feed-construction .construction-copy p { margin: 0; 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}\n#subia-oil-template #construction .pad-feed-photo-action {\n  display: block;\n  padding: 0 12px 10px;\n  text-align: end;\n  color: var(--teal);\n  font-size: 12px;\n  font-weight: 550;\n  line-height: 1.4;\n  text-decoration: underline;\n  text-underline-offset: 3px;\n}\n#subia-oil-template #construction .pad-feed-photo figcaption { margin-block-start: 16px; }\n#subia-oil-template #construction .pad-feed-photo h3 {\n  margin: 0 0 6px;\n  font-size: clamp(20px, 1.8vw, 25px);\n}\n#subia-oil-template #construction .pad-feed-photo figcaption p {\n  margin: 0;\n  font-size: 15px;\n  line-height: 1.6;\n}\n#subia-oil-template #pad-feed-photo-dialog {\n  width: min(1040px, calc(100vw - 40px), calc(130dvh - 140px));\n  max-width: none;\n  max-height: calc(100dvh - 28px);\n  margin: auto;\n  padding: 0;\n  border: 1px solid var(--line);\n  background: #fff;\n  color: var(--slate);\n}\n#subia-oil-template #pad-feed-photo-dialog::backdrop { background: #06171cd9; }\n#subia-oil-template #construction .pad-feed-photo-dialog-bar {\n  display: flex;\n  align-items: center;\n  justify-content: space-between;\n  gap: 12px;\n  min-height: 56px;\n  padding: 6px 16px;\n  border-bottom: 1px solid var(--line);\n}\n#subia-oil-template #construction .pad-feed-photo-dialog-bar form { margin: 0; }\n#subia-oil-template #construction .pad-feed-photo-close {\n  min-height: 44px;\n  padding: 5px 12px;\n  border: 0;\n  background: transparent;\n  color: var(--teal);\n  font-size: 14px;\n  font-weight: 550;\n  text-decoration: underline;\n  text-underline-offset: 4px;\n}\n#subia-oil-template #construction .pad-feed-photo-viewport {\n  max-height: calc(100dvh - 98px);\n  overflow: auto;\n  overscroll-behavior: contain;\n}\n#subia-oil-template #construction .pad-feed-photo-viewport:focus-visible { outline-offset: -4px; }\n@media (min-width: 1050px) {\n  #subia-oil-template #construction .pad-feed-construction .construction-copy {\n    grid-template-columns: repeat(3, minmax(0, 1fr));\n  }\n}\n@media (max-width: 767px) {\n  #subia-oil-template #construction .pad-feed-comparison {\n    grid-template-columns: minmax(0, 1fr);\n    gap: 26px;\n  }\n  #subia-oil-template #pad-feed-photo-dialog { width: calc(100vw - 24px); }\n  #subia-oil-template #construction .pad-feed-photo-viewport .pad-feed-photo-frame { min-width: 520px; }\n}\n<\/style>\n\n<script id=\"subia-pad-feed-comparison-script\">\n(() => {\n  const dialog = document.getElementById('pad-feed-photo-dialog');\n  if (!dialog || typeof dialog.showModal !== 'function' || dialog.dataset.ready) return;\n\n  dialog.dataset.ready = 'true';\n  const comparison = dialog.previousElementSibling;\n  const title = dialog.querySelector('#pad-feed-photo-title');\n  const viewport = dialog.querySelector('.pad-feed-photo-viewport');\n  const stage = viewport.querySelector('.pad-feed-photo-frame');\n  const fullPhoto = stage.querySelector('img');\n  let opener;\n\n  comparison.addEventListener('click', event => {\n    const link = event.target.closest('.pad-feed-photo-link');\n    if (!link || event.defaultPrevented || event.ctrlKey || event.metaKey || event.shiftKey || event.altKey) return;\n\n    const figure = link.closest('figure');\n    const thumbnail = link.querySelector('img');\n    const sourceStyle = getComputedStyle(figure);\n    stage.style.setProperty('--pad-photo-width', sourceStyle.getPropertyValue('--pad-photo-width'));\n    stage.style.setProperty('--pad-photo-offset', sourceStyle.getPropertyValue('--pad-photo-offset'));\n    title.textContent = figure.querySelector('h3').textContent;\n    fullPhoto.alt = thumbnail.alt;\n    fullPhoto.src = link.href;\n    opener = link;\n    dialog.showModal();\n    event.preventDefault();\n    viewport.scrollLeft = (viewport.scrollWidth - viewport.clientWidth) \/ 2;\n    viewport.scrollTop = 0;\n  });\n\n  dialog.addEventListener('click', event => {\n    if (event.target !== dialog) return;\n    const bounds = dialog.getBoundingClientRect();\n    if (event.clientX < bounds.left || event.clientX > bounds.right ||\n        event.clientY < bounds.top || event.clientY > bounds.bottom) dialog.close();\n  });\n\n  dialog.addEventListener('close', () => {\n    opener?.focus({ preventScroll: true });\n    opener = undefined;\n  });\n})();\n<\/script>\n<\/div><\/section><section class=\"oil-section rd-tab-group\" id=\"pad-network\" data-rd-tabs=\"\"><div class=\"rail\"><h2 class=\"rd-group-title\">Feed arrangement &#038; connection interfaces<\/h2><div class=\"rd-tab-list\" aria-label=\"Feed arrangement &#038; connection interfaces\"><button type=\"button\" class=\"rd-topic-tab\" id=\"rd-1018-tab-radial-and-loop-feed\" data-rd-target=\"radial-and-loop-feed\">Radial &#038; loop feed<\/button><button type=\"button\" class=\"rd-topic-tab\" id=\"rd-1018-tab-switching-and-fuse-protection\" data-rd-target=\"switching-and-fuse-protection\">Switching &#038; fuses<\/button><button type=\"button\" class=\"rd-topic-tab\" id=\"rd-1018-tab-cable-and-neutral-interfaces\" data-rd-target=\"cable-and-neutral-interfaces\">Cables &#038; neutral<\/button><\/div><div class=\"rd-tab-content\"><section class=\"oil-section  balanced-section rd-topic-panel\" id=\"radial-and-loop-feed\" data-source-section=\"radial-and-loop-feed\" data-rd-panel=\"\" aria-labelledby=\"rd-1018-tab-radial-and-loop-feed\"><div class=\"rail\"><h2 class=\"balanced-heading\">Radial and loop-feed arrangements<\/h2><div class=\"balanced-copy balanced-copy-3\"><div><h3>Incoming and through feeders<\/h3><p>Radial feed and loop feed are available within the pad-mounted configuration. A radial arrangement terminates an incoming feeder at the transformer. A loop-feed arrangement provides incoming and outgoing HV cable positions so the transformer can form part of a feeder route.<\/p><\/div><div><h3>Network operation<\/h3><p>The feed arrangement determines the cable-compartment layout and the switching scheme. A loop-capable enclosure does not by itself define how the utility operates the network: loop-feed equipment can also be installed on a radial system. Source selection and sectionalizing functions depend on the actual switches and single-line diagram.<\/p><\/div><div><h3>Single-line arrangement<\/h3><p>Specify the incoming feeder, outgoing feeder where applicable, normal operating connection and required isolation points in the single-line diagram. These details establish the required cable positions and switch functions before terminal and protection components are selected.<\/p><\/div><\/div><ul class=\"content-list\"><li>Radial feed: the incoming HV circuit, transformer protection and LV supply are arranged around a terminating feeder.<\/li><li>Loop feed: incoming and outgoing cable positions are coordinated with the through-feeder and transformer switching arrangement.<\/li><li>Cable routing: cable entry positions, bend space and operating access follow the selected cabinet and termination layout.<\/li><\/ul><\/div><\/section><section class=\"oil-section dark balanced-section rd-topic-panel\" id=\"switching-and-fuse-protection\" data-source-section=\"switching-and-fuse-protection\" data-rd-panel=\"\" aria-labelledby=\"rd-1018-tab-switching-and-fuse-protection\"><div class=\"rail\"><h2 class=\"balanced-heading\">HV switching and fuse protection<\/h2><div class=\"balanced-copy balanced-copy-3\"><div><h3>Switching and fusing<\/h3><p>The integrated HV arrangement includes a load switch and fuse protection. Switching establishes the operating connection of the transformer or feeder, while fusing forms part of the overcurrent-protection arrangement. These functions have to work with the upstream network protection and the downstream LV protective devices.<\/p><\/div><div><h3>Protection coordination<\/h3><p>The single-line diagram brings the feed type, transformer connection and protection arrangement together. Switch function, fuse rating and cable termination are individual design selections; the kVA rating alone does not define them. Their coordination also depends on the available fault level and the operating requirements of the utility or facility.<\/p><\/div><div><h3>Accessory specification<\/h3><p>The accessory schedule should name the selected switch and fuse arrangement together with the required ratings and connection interfaces. This keeps the physical compartment layout aligned with the protection study and the operating procedure for the installation.<\/p><\/div><\/div><div class=\"table-wrap\" role=\"region\" tabindex=\"0\" aria-label=\"Protection and switching coordination\"><table class=\"alignment-property-table property-table\"><caption>Protection and switching coordination<\/caption><thead><tr><th scope=\"col\">Engineering item<\/th><th scope=\"col\">Relationship to the pad-mounted unit<\/th><\/tr><\/thead><tbody><tr><th scope=\"row\">HV load switch<\/th><td>Operating connection for the selected radial or loop-feed arrangement<\/td><\/tr><tr><th scope=\"row\">Fuse protection<\/th><td>Transformer protection coordinated with the supply and LV protection<\/td><\/tr><tr><th scope=\"row\">Primary cable termination<\/th><td>Voltage class and interface matched to the HV connection arrangement<\/td><\/tr><tr><th scope=\"row\">LV protective devices<\/th><td>Coordination with transformer output, circuit demand and system fault level<\/td><\/tr><\/tbody><\/table><\/div><div class=\"table-notes\"><\/div><\/div><\/section><section class=\"oil-section  balanced-section rd-topic-panel\" id=\"cable-and-neutral-interfaces\" data-source-section=\"cable-and-neutral-interfaces\" data-rd-panel=\"\" aria-labelledby=\"rd-1018-tab-cable-and-neutral-interfaces\"><div class=\"rail\"><h2 class=\"balanced-heading\">Cable, neutral and earthing interfaces<\/h2><div class=\"balanced-copy balanced-copy-3\"><div><h3>Primary and secondary connections<\/h3><p>The HV and LV cable interfaces are arranged at the transformer compartments. The 13.8 kV configurations use a delta primary, so their winding connection is different from a grounded-wye primary design. On the secondary side, the star-point neutral supports the stated 208 V three-phase and 120 V phase-to-neutral supply.<\/p><\/div><div><h3>Connection drawing<\/h3><p>Cable entry, terminal layout and the neutral connection are carried into the connection drawing. This drawing links the incoming MV feeder, outgoing LV circuits and earthing connections to the actual cabinet arrangement. Cable size, termination type and the number of parallel LV conductors affect the space required inside the compartments.<\/p><\/div><div><h3>Cable and terminal space<\/h3><p>Identify the primary cable construction and termination interface, the outgoing phase and neutral conductors, and any required parallel cable runs before the terminal layout is finalized. The dimensions of the cable openings and the working space then follow the actual connections and approved installation drawing.<\/p><\/div><\/div><ul class=\"content-list\"><li>HV cable entry and termination positions for the chosen feed arrangement.<\/li><li>LV phase and neutral terminals corresponding to the selected winding connection.<\/li><li>Earthing connection points for the tank, cabinet and site earthing system.<\/li><li>Cable-entry openings and working space coordinated with the foundation and underground cable route.<\/li><\/ul><\/div><\/section><\/div><\/div><\/section><section class=\"oil-section rd-tab-group\" id=\"pad-engineering\" data-rd-tabs=\"\"><div class=\"rail\"><h2 class=\"rd-group-title\">Rated data &#038; installation<\/h2><div class=\"rd-tab-list\" aria-label=\"Rated data &#038; installation\"><button type=\"button\" class=\"rd-topic-tab\" id=\"rd-1018-tab-performance\" data-rd-target=\"performance\">13.8 kV configurations<\/button><button type=\"button\" class=\"rd-topic-tab\" id=\"rd-1018-tab-insulation-and-impedance\" data-rd-target=\"insulation-and-impedance\">Insulation &#038; impedance<\/button><button type=\"button\" class=\"rd-topic-tab\" id=\"rd-1018-tab-cooling-and-environment\" data-rd-target=\"cooling-and-environment\">Cooling &#038; enclosure<\/button><button type=\"button\" class=\"rd-topic-tab\" id=\"rd-1018-tab-foundation-and-installation\" data-rd-target=\"foundation-and-installation\">Foundation &#038; access<\/button><\/div><div class=\"rd-tab-content\"><section class=\"oil-section  balanced-section rd-editorial rd-topic-panel\" id=\"performance\" data-source-section=\"electrical-configurations\" data-rd-panel=\"\" aria-labelledby=\"rd-1018-tab-performance\"><div class=\"rail\"><h2 class=\"balanced-heading\">13.8 kV input and 208\/120 V output<\/h2><div class=\"balanced-copy balanced-copy-3\"><div><h3>Voltage and frequency<\/h3><p>The three configurations use a delta-connected 13.8 kV primary and a star-connected 208 V secondary with an accessible neutral. The Dyn11 connection supports three-phase 208 V loads and 120 V phase-to-neutral service. The rated frequency is 60 Hz, with a separately selected 50 Hz design option.<\/p><\/div><div><h3>Materials and rating data<\/h3><p>Copper windings, a silicon-steel core and ONAN cooling are common to these configurations. Short-circuit impedance differs by capacity and forms part of the system fault-current and protection study. The detailed panels also include insulation levels, enclosure protection and the specified ambient-temperature range for each configuration.<\/p><\/div><div><h3>Three-phase and neutral supply<\/h3><p>The neutral is the star point of the low-voltage winding. A phase-to-neutral 120 V circuit is part of this three-phase secondary arrangement; it does not turn the transformer into a single-phase model. The load schedule and neutral requirements should accompany the single-line diagram.<\/p><\/div><\/div><div class=\"table-wrap\" role=\"region\" tabindex=\"0\" aria-label=\"13.8 kV \/ 208 V configuration data\"><table class=\"alignment-data-matrix\"><caption>13.8 kV \/ 208 V configuration data<\/caption><thead><tr><th scope=\"col\">Rated capacity<\/th><th scope=\"col\">Rated HV<\/th><th scope=\"col\">Rated LV<\/th><th scope=\"col\">Frequency<\/th><th scope=\"col\">Vector group<\/th><\/tr><\/thead><tbody><tr><th data-label=\"Rated capacity\" scope=\"row\">150 kVA<\/th><td data-label=\"Rated HV\">13.8 kV, delta<\/td><td data-label=\"Rated LV\">208 V line-to-line \/ 120 V line-to-neutral<\/td><td data-label=\"Frequency\">60 Hz; separate 50 Hz option<\/td><td data-label=\"Vector group\">Dyn11<\/td><\/tr><tr><th data-label=\"Rated capacity\" scope=\"row\">500 kVA<\/th><td data-label=\"Rated HV\">13.8 kV, delta<\/td><td data-label=\"Rated LV\">208 V line-to-line \/ 120 V line-to-neutral<\/td><td data-label=\"Frequency\">60 Hz; separate 50 Hz option<\/td><td data-label=\"Vector group\">Dyn11<\/td><\/tr><tr><th data-label=\"Rated capacity\" scope=\"row\">1,000 kVA<\/th><td data-label=\"Rated HV\">13.8 kV, delta<\/td><td data-label=\"Rated LV\">208 V line-to-line \/ 120 V line-to-neutral<\/td><td data-label=\"Frequency\">60 Hz; separate 50 Hz option<\/td><td data-label=\"Vector group\">Dyn11<\/td><\/tr><\/tbody><\/table><\/div><div class=\"table-notes\"><p>These are separate copper-wound, Dyn11 configurations. The 50 Hz option is a design choice; it does not change a 60 Hz nameplate rating in service.<\/p><p>Product images illustrate ZGS enclosure arrangements. They do not identify the exact voltage or winding configuration in this table.<\/p><\/div><div class=\"action-row\"><button type=\"button\" class=\"text-link\" data-open-product=\"pad-zgs-150\" data-start-tab=\"technical\">ZGS Pad-mounted Transformer \u2014 150 kVA<svg viewBox=\"0 0 24 24\" aria-hidden=\"true\"><path d=\"M4 12h15m-6-6 6 6-6 6\"\/><\/svg><\/button><button type=\"button\" class=\"text-link\" data-open-product=\"pad-zgs-500\" data-start-tab=\"technical\">ZGS Pad-mounted Transformer \u2014 500 kVA<svg viewBox=\"0 0 24 24\" aria-hidden=\"true\"><path d=\"M4 12h15m-6-6 6 6-6 6\"\/><\/svg><\/button><button type=\"button\" class=\"text-link\" data-open-product=\"pad-zgs-1000\" data-start-tab=\"technical\">ZGS Pad-mounted Transformer \u2014 1,000 kVA<svg viewBox=\"0 0 24 24\" aria-hidden=\"true\"><path d=\"M4 12h15m-6-6 6 6-6 6\"\/><\/svg><\/button><\/div><\/div><\/section><section class=\"oil-section  balanced-section rd-topic-panel\" id=\"insulation-and-impedance\" data-source-section=\"insulation-and-impedance\" data-rd-panel=\"\" aria-labelledby=\"rd-1018-tab-insulation-and-impedance\"><div class=\"rail\"><h2 class=\"balanced-heading\">Insulation, impedance and losses<\/h2><div class=\"balanced-copy balanced-copy-3\"><div><h3>Insulation levels<\/h3><p>The three 13.8 kV configuration sheets specify 34 kV power-frequency withstand on the high-voltage side and a 95 kV basic impulse level. The project insulation schedule should coordinate the transformer, primary cable interface and protective devices around the selected voltage and network arrangement.<\/p><\/div><div><h3>Impedance and excitation<\/h3><p>Short-circuit impedance is 4.5% for the 150 kVA and 500 kVA configurations and 5.75% for the 1,000 kVA configuration. The respective no-load-current limits are 0.8%, 0.7% and 0.6%. Keep these values with their capacity, voltage ratio and Dyn11 connection when carrying out the network study.<\/p><\/div><div><h3>Reference losses<\/h3><p>Each technical panel also includes approximate loss data from its configuration sheet, with load loss referenced to 75 \u00b0C. These values support preliminary specification. The final loss guarantees, test conditions and acceptance documents are agreed for the ordered design; the 50 Hz option needs its own rated data.<\/p><\/div><\/div><div class=\"table-wrap\" role=\"region\" tabindex=\"0\" aria-label=\"Impedance and excitation-current values\"><table class=\"alignment-data-matrix\"><caption>Impedance and excitation-current values<\/caption><thead><tr><th scope=\"col\">Rated capacity<\/th><th scope=\"col\">Short-circuit impedance<\/th><th scope=\"col\">No-load current<\/th><\/tr><\/thead><tbody><tr><th data-label=\"Rated capacity\" scope=\"row\">150 kVA<\/th><td data-label=\"Short-circuit impedance\">4.5%<\/td><td data-label=\"No-load current\">\u22640.8%<\/td><\/tr><tr><th data-label=\"Rated capacity\" scope=\"row\">500 kVA<\/th><td data-label=\"Short-circuit impedance\">4.5%<\/td><td data-label=\"No-load current\">\u22640.7%<\/td><\/tr><tr><th data-label=\"Rated capacity\" scope=\"row\">1000 kVA<\/th><td data-label=\"Short-circuit impedance\">5.75%<\/td><td data-label=\"No-load current\">\u22640.6%<\/td><\/tr><\/tbody><\/table><\/div><div class=\"table-notes\"><p>Values apply to the 13.8 kV, Dyn11 configurations. They are not transferred to other voltage or winding arrangements.<\/p><\/div><div class=\"table-wrap\" role=\"region\" tabindex=\"0\" aria-label=\"Insulation levels in the 13.8 kV configuration sheets\"><table class=\"alignment-property-table property-table\"><caption>Insulation levels in the 13.8 kV configuration sheets<\/caption><thead><tr><th scope=\"col\">Electrical property<\/th><th scope=\"col\">Specified value<\/th><\/tr><\/thead><tbody><tr><th scope=\"row\">HV power-frequency withstand<\/th><td>34 kV<\/td><\/tr><tr><th scope=\"row\">Basic impulse level<\/th><td>95 kV<\/td><\/tr><\/tbody><\/table><\/div><div class=\"table-notes\"><p>Configuration-sheet values; the required tests and acceptance documentation follow the project specification.<\/p><\/div><\/div><\/section><section class=\"oil-section paper balanced-section rd-editorial rd-topic-panel\" id=\"cooling-and-environment\" data-source-section=\"cooling-and-environment\" data-rd-panel=\"\" aria-labelledby=\"rd-1018-tab-cooling-and-environment\"><div class=\"rail\"><h2 class=\"engineering-panel-title\">Cooling and outdoor enclosure<\/h2><div class=\"engineering-exhibit\"><figure class=\"equipment-figure\"><img decoding=\"async\" class=\"\" src=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-transformers-20261025-f094-960-126d2bce.webp\" srcset=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-transformers-20261025-f094-480-888f9d50.webp 480w, https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-transformers-20261025-f094-960-126d2bce.webp 960w, https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-transformers-20261025-f094-1600-5144f69d.webp 1600w\" sizes=\"auto, (max-width:767px) 90vw, 45vw\" alt=\"Cooling and outdoor enclosure\" width=\"960\" height=\"960\" loading=\"lazy\"><figcaption>500 kVA ZGS tank and radiator example. Photograph shows the enclosure arrangement.<\/figcaption><\/figure><div class=\"engineering-story\"><p>ONAN cooling uses the natural circulation of insulating oil and surrounding air. Heat passes from the core and windings to the oil, then through the tank and cooling surfaces to the environment. The listed configurations do not require a forced-air fan system.<\/p><p>The three 13.8 kV technical sheets specify an ambient range of \u221240 \u00b0C to +40 \u00b0C and an IP54 outdoor enclosure. Cooling surfaces need airflow, and the siting design should account for nearby walls, equipment and vegetation. Any different ambient or elevation conditions belong in the project specification.<\/p><p>Enclosure requirements include the cabinet construction, exposed surfaces and cable entries. The listed IEEE C57.12.28 reference addresses pad-mounted enclosure integrity; it does not establish the transformer\u2019s electrical rating or approve a different site environment. The required finish and acceptance documents follow the selected enclosure specification.<\/p><\/div><\/div><div class=\"table-wrap\" role=\"region\" tabindex=\"0\" aria-label=\"Outdoor duty for the listed 13.8 kV configurations\"><table class=\"alignment-property-table property-table\"><caption>Outdoor duty for the listed 13.8 kV configurations<\/caption><thead><tr><th scope=\"col\">Item<\/th><th scope=\"col\">Specification or project input<\/th><\/tr><\/thead><tbody><tr><th scope=\"row\">Cooling<\/th><td>ONAN \u2014 natural oil circulation and natural airflow<\/td><\/tr><tr><th scope=\"row\">Ambient temperature<\/th><td>\u221240 \u00b0C to +40 \u00b0C in the configuration sheets<\/td><\/tr><tr><th scope=\"row\">Enclosure protection<\/th><td>IP54 in the configuration sheets<\/td><\/tr><tr><th scope=\"row\">Airflow and access<\/th><td>Space around cooling surfaces and access to operating compartments<\/td><\/tr><tr><th scope=\"row\">Exposure<\/th><td>Dust, coastal salt and corrosive conditions stated with the project requirements<\/td><\/tr><\/tbody><\/table><\/div><div class=\"table-notes\"><p>IP54 is an enclosure-protection specification, not a statement of suitability for immersion or flooding.<\/p><\/div><\/div><\/section><section class=\"oil-section paper balanced-section rd-editorial rd-topic-panel\" id=\"foundation-and-installation\" data-source-section=\"foundation-and-installation\" data-rd-panel=\"\" aria-labelledby=\"rd-1018-tab-foundation-and-installation\"><div class=\"rail\"><h2 class=\"engineering-panel-title\">Foundation and installation interfaces<\/h2><div class=\"engineering-exhibit\"><figure class=\"equipment-figure\"><img decoding=\"async\" class=\"\" src=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-transformers-20261025-f091-960-e8f4b400.webp\" srcset=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-transformers-20261025-f091-480-29f2eb06.webp 480w, https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-transformers-20261025-f091-960-e8f4b400.webp 960w, https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-transformers-20261025-f091-1600-10d03b12.webp 1600w\" sizes=\"auto, (max-width:767px) 90vw, 45vw\" alt=\"Foundation and installation interfaces\" width=\"960\" height=\"960\" loading=\"lazy\"><figcaption>500 kVA ZGS cabinet example. Project dimensions and foundation details follow the approved drawing.<\/figcaption><\/figure><div class=\"engineering-story\"><p>A prepared foundation supports the transformer and aligns its cable openings with the site cable route. The layout also leaves space for doors, cable terminations and operating access.<\/p><p>Earthing connects the enclosure to the site earthing system; neutral grounding follows the network design. The selected unit\u2019s overall drawing defines its footprint, lifting points and mass, while the project design establishes anchoring and clearances.<\/p><p>Locate the transformer so that the cable route, door swing and operating approach remain usable after surrounding works are complete. Confirm handling access before delivery and use the approved lifting and foundation information for the ordered assembly.<\/p><\/div><\/div><div class=\"table-wrap\" role=\"region\" tabindex=\"0\" aria-label=\"Installation interfaces\"><table class=\"alignment-property-table property-table\"><caption>Installation interfaces<\/caption><thead><tr><th scope=\"col\">Interface<\/th><th scope=\"col\">Design purpose<\/th><\/tr><\/thead><tbody><tr><th scope=\"row\">Foundation and anchoring<\/th><td>Support the unit and align its base with the cable route<\/td><\/tr><tr><th scope=\"row\">HV and LV cable openings<\/th><td>Match the connection drawing and cable installation space<\/td><\/tr><tr><th scope=\"row\">Tank and cabinet earthing<\/th><td>Integrate exposed metalwork with the site earthing system<\/td><\/tr><tr><th scope=\"row\">Operating access<\/th><td>Keep doors, switching positions and terminations accessible<\/td><\/tr><tr><th scope=\"row\">Lifting and handling<\/th><td>Use the unit-specific drawing, lifting points and mass<\/td><\/tr><\/tbody><\/table><\/div><div class=\"table-notes\"><p>Clearances, anchoring and earthing details follow the project design and the local utility requirements.<\/p><\/div><\/div><\/section><\/div><\/div><\/section><section class=\"oil-section  balanced-section\" id=\"applications\" data-source-section=\"applications\"><div class=\"rail\"><div class=\"section-heading\"><h2 class=\"balanced-heading\">Applications<\/h2><div><p>ZGS transformers serve outdoor distribution points where the transformer and connection compartments need to occupy one compact location. Residential and commercial installations use the unit to connect a medium-voltage feeder to local low-voltage distribution. Industrial installations use the same arrangement to supply factory or plant loads.<\/p><\/div><\/div><div class=\"app-explorer\" data-application-switcher><div class=\"app-tabs\" data-application-tabs role=\"tablist\" aria-label=\"Application environments\" aria-orientation=\"vertical\"><button type=\"button\" class=\"app-tab\" id=\"app-tab-residential\" data-application-tab=\"residential\" role=\"tab\" aria-controls=\"app-panel-residential\" aria-selected=\"true\" tabindex=\"0\"><img decoding=\"async\" src=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-04-pad-mounted-application-residential-640-d11fbacd.webp\" alt=\"\" width=\"96\" height=\"64\" loading=\"lazy\"><span>Residential communities<\/span><svg viewBox=\"0 0 24 24\" aria-hidden=\"true\"><path d=\"M4 12h15m-6-6 6 6-6 6\"\/><\/svg><\/button><button type=\"button\" class=\"app-tab\" id=\"app-tab-commercial\" data-application-tab=\"commercial\" role=\"tab\" aria-controls=\"app-panel-commercial\" aria-selected=\"false\" tabindex=\"-1\"><img decoding=\"async\" src=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-04-pad-mounted-application-commercial-640-fb0879d6.webp\" alt=\"\" width=\"96\" height=\"64\" loading=\"lazy\"><span>Commercial developments<\/span><svg viewBox=\"0 0 24 24\" aria-hidden=\"true\"><path d=\"M4 12h15m-6-6 6 6-6 6\"\/><\/svg><\/button><button type=\"button\" class=\"app-tab\" id=\"app-tab-industrial\" data-application-tab=\"industrial\" role=\"tab\" aria-controls=\"app-panel-industrial\" aria-selected=\"false\" tabindex=\"-1\"><img decoding=\"async\" src=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-04-pad-mounted-application-industrial-640-dc73c8d2.webp\" alt=\"\" width=\"96\" height=\"64\" loading=\"lazy\"><span>Industrial facilities<\/span><svg viewBox=\"0 0 24 24\" aria-hidden=\"true\"><path d=\"M4 12h15m-6-6 6 6-6 6\"\/><\/svg><\/button><\/div><div class=\"app-panels\"><article class=\"app-panel\" id=\"app-panel-residential\" data-application-panel=\"residential\" role=\"tabpanel\" aria-labelledby=\"app-tab-residential\" tabindex=\"0\"><figure class=\"app-panel-image\"><img decoding=\"async\" src=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-04-pad-mounted-application-residential-1280-af9ecb5f.webp\" srcset=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-04-pad-mounted-application-residential-640-d11fbacd.webp 640w, https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-04-pad-mounted-application-residential-1280-af9ecb5f.webp 1280w\" sizes=\"auto, (max-width:767px) calc(100vw - 32px), (max-width:1200px) 62vw, 850px\" alt=\"Illustrative residential service verge with a closed green pad-mounted transformer and unobstructed access space\" width=\"1536\" height=\"1024\" loading=\"lazy\"><\/figure><div class=\"app-panel-copy\"><h3>Residential communities<\/h3><p>Place enclosed distribution equipment along the community service network, with underground cable entry and a clear maintenance area around the cabinet.<\/p><\/div><\/article><article class=\"app-panel\" id=\"app-panel-commercial\" data-application-panel=\"commercial\" role=\"tabpanel\" aria-labelledby=\"app-tab-commercial\" tabindex=\"0\"><figure class=\"app-panel-image\"><img decoding=\"async\" src=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-04-pad-mounted-application-commercial-1280-ca19c125.webp\" srcset=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-04-pad-mounted-application-commercial-640-fb0879d6.webp 640w, https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-04-pad-mounted-application-commercial-1280-ca19c125.webp 1280w\" sizes=\"auto, (max-width:767px) calc(100vw - 32px), (max-width:1200px) 62vw, 850px\" alt=\"Illustrative commercial-campus service area with a closed pad-mounted cabinet and clear paved access apron\" width=\"1536\" height=\"1024\" loading=\"lazy\"><\/figure><div class=\"app-panel-copy\"><h3>Commercial developments<\/h3><p>Coordinate the transformer position with building loads, service roads and landscaped areas. Cabinet access remains separate from routine pedestrian and vehicle movement.<\/p><\/div><\/article><article class=\"app-panel\" id=\"app-panel-industrial\" data-application-panel=\"industrial\" role=\"tabpanel\" aria-labelledby=\"app-tab-industrial\" tabindex=\"0\"><figure class=\"app-panel-image\"><img decoding=\"async\" src=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-04-pad-mounted-application-industrial-1280-9a321add.webp\" srcset=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-04-pad-mounted-application-industrial-640-dc73c8d2.webp 640w, https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-04-pad-mounted-application-industrial-1280-9a321add.webp 1280w\" sizes=\"auto, (max-width:767px) calc(100vw - 32px), (max-width:1200px) 62vw, 850px\" alt=\"Illustrative industrial service lane with an enclosed green pad-mounted transformer beside a factory building\" width=\"1536\" height=\"1024\" loading=\"lazy\"><\/figure><div class=\"app-panel-copy\"><h3>Industrial facilities<\/h3><p>Locate distribution equipment near plant loads while allowing room for cable routing, cabinet access and maintenance vehicles. The site layout defines the required protective measures.<\/p><\/div><\/article><\/div><\/div><p class=\"app-image-note\">Illustrative application environments.<\/p><div class=\"application-coordination\"><div><p>The 208 V \/ 120 V configurations are relevant when those voltages match the load schedule. A 13.8 kV primary, Dyn11 winding connection and the selected feed arrangement must also match the supply network. Capacity selection follows the connected load, operating demand and the project load plan.<\/p><\/div><ul class=\"content-list\"><li>Residential communities: a compact outdoor transformation point for local LV distribution.<\/li><li>Shopping and service facilities: supply to three-phase and phase-to-neutral circuits at the required secondary voltage.<\/li><li>Factories and industrial zones: outdoor distribution near the plant load, with cable routing and protection integrated into the site design.<\/li><li>Utility distribution: above-ground equipment connected into the selected radial or loop-feed arrangement.<\/li><\/ul><\/div><\/div><\/section><section class=\"oil-section rd-buying-faq\" id=\"site-conditions\"><div class=\"rail\"><div class=\"rd-faq-intro\"><h2>Pad-mounted transformer procurement FAQs<\/h2><p>The site design brings the distribution duty, enclosure location and cable route together. Confirm the utility supply voltage and feed arrangement first, then match the secondary circuits and neutral requirement to the selected transformer configuration.<\/p><p>For an outdoor installation, provide the ambient-temperature range, elevation and exposure conditions. The layout should leave room for cooling airflow, door operation, cable work and equipment handling, with drainage and foundation details coordinated with the civil design.<\/p><\/div><div class=\"rd-faq-list\"><details class=\"rd-faq\"><summary>Which supply-network details are required?<span aria-hidden=\"true\" class=\"rd-faq-icon\">+<\/span><\/summary><div class=\"rd-faq-answer\"><p class=\"rd-faq-field\">Supply network<\/p><p>Primary voltage, radial or loop feed and the single-line diagram<\/p><div class=\"site-condition-body\"><p class=\"site-design-review\"><span>Design review<\/span>Winding ratio, cable positions and switching arrangement<\/p><\/div><\/div><\/details><details class=\"rd-faq\"><summary>How should the secondary load be described?<span aria-hidden=\"true\" class=\"rd-faq-icon\">+<\/span><\/summary><div class=\"rd-faq-answer\"><p class=\"rd-faq-field\">Secondary load<\/p><p>Three-phase demand, phase-to-neutral circuits and expected load growth<\/p><div class=\"site-condition-body\"><p class=\"site-design-review\"><span>Design review<\/span>Capacity, 208\/120 V supply and neutral interface<\/p><\/div><\/div><\/details><details class=\"rd-faq\"><summary>Which ambient and exposure conditions matter?<span aria-hidden=\"true\" class=\"rd-faq-icon\">+<\/span><\/summary><div class=\"rd-faq-answer\"><p class=\"rd-faq-field\">Ambient and exposure<\/p><p>Temperature range, elevation, dust, coastal salt and corrosive conditions<\/p><div class=\"site-condition-body\"><p class=\"site-design-review\"><span>Design review<\/span>Cooling, insulation surfaces and enclosure finish<\/p><\/div><\/div><\/details><details class=\"rd-faq\"><summary>What foundation and drainage inputs are needed?<span aria-hidden=\"true\" class=\"rd-faq-icon\">+<\/span><\/summary><div class=\"rd-faq-answer\"><p class=\"rd-faq-field\">Foundation and drainage<\/p><p>Pad location, cable openings, anchoring and site drainage<\/p><div class=\"site-condition-body\"><p class=\"site-design-review\"><span>Design review<\/span>Base arrangement and civil interface<\/p><\/div><\/div><\/details><details class=\"rd-faq\"><summary>What information defines the cable space?<span aria-hidden=\"true\" class=\"rd-faq-icon\">+<\/span><\/summary><div class=\"rd-faq-answer\"><p class=\"rd-faq-field\">Cable access<\/p><p>Cable sizes, termination type, bend space and parallel LV conductors<\/p><div class=\"site-condition-body\"><p class=\"site-design-review\"><span>Design review<\/span>Compartment layout and connection drawing<\/p><\/div><\/div><\/details><details class=\"rd-faq\"><summary>How should operating and handling access be planned?<span aria-hidden=\"true\" class=\"rd-faq-icon\">+<\/span><\/summary><div class=\"rd-faq-answer\"><p class=\"rd-faq-field\">Operating access<\/p><p>Door swing, approach space, lifting route and maintenance access<\/p><div class=\"site-condition-body\"><p class=\"site-design-review\"><span>Design review<\/span>Overall layout and approved installation drawing<\/p><\/div><\/div><\/details><details class=\"rd-faq\"><summary>Which technical documents should accompany the order?<span aria-hidden=\"true\" class=\"rd-faq-icon\">+<\/span><\/summary><div class=\"rd-faq-answer\"><section class=\"oil-section  balanced-section rd-faq-embedded\" id=\"documents\" data-source-section=\"technical-documents\"><div class=\"rail\"><span class=\"anchor-alias\" id=\"project-inquiry\" aria-hidden=\"true\"><\/span><h3 class=\"balanced-heading\">Technical documents<\/h3><p>The product-information panels contain the electrical and construction data for the 150 kVA, 500 kVA and 1,000 kVA configurations. For project procurement, the rated data sheet, single-line diagram and connection drawing should describe the same voltage ratio, vector group, cooling arrangement and feed type.<\/p><div class=\"document-list\"><div class=\"document-row\"><span><strong>ZGS Pad-mounted Transformer \u2014 150 kVA<\/strong><small>150 kVA ZGS enclosure views and a separate 13.8 kV \/ 208 V, Dyn11 configuration with ONAN cooling.<\/small><\/span><button type=\"button\" class=\"text-link\" data-open-product=\"pad-zgs-150\" data-start-tab=\"technical\">View technical data<svg viewBox=\"0 0 24 24\" aria-hidden=\"true\"><path d=\"M4 12h15m-6-6 6 6-6 6\"\/><\/svg><\/button><\/div><div class=\"document-row\"><span><strong>ZGS Pad-mounted Transformer \u2014 500 kVA<\/strong><small>500 kVA ZGS enclosure views and a separate 13.8 kV \/ 208 V, Dyn11 configuration with ONAN cooling.<\/small><\/span><button type=\"button\" class=\"text-link\" data-open-product=\"pad-zgs-500\" data-start-tab=\"technical\">View technical data<svg viewBox=\"0 0 24 24\" aria-hidden=\"true\"><path d=\"M4 12h15m-6-6 6 6-6 6\"\/><\/svg><\/button><\/div><div class=\"document-row\"><span><strong>ZGS Pad-mounted Transformer \u2014 1,000 kVA<\/strong><small>1,000 kVA ZGS enclosure views and a separate 13.8 kV \/ 208 V, Dyn11 configuration with ONAN cooling.<\/small><\/span><button type=\"button\" class=\"text-link\" data-open-product=\"pad-zgs-1000\" data-start-tab=\"technical\">View technical data<svg viewBox=\"0 0 24 24\" aria-hidden=\"true\"><path d=\"M4 12h15m-6-6 6 6-6 6\"\/><\/svg><\/button><\/div><\/div><div class=\"rd-document-scope\"><h4>Document scope and configuration notes<\/h4><div><p>The final technical package also defines the cabinet arrangement, overall dimensions, terminal positions, protection components and inspection requirements. Electrical ratings, enclosure requirements and acceptance tests are separate parts of that package. Loss guarantees and physical dimensions belong to the selected design and its order documents.<\/p><div class=\"table-wrap\" role=\"region\" tabindex=\"0\" aria-label=\"Engineering documents for the selected configuration\"><table class=\"property-table\"><caption>Engineering documents for the selected configuration<\/caption><thead><tr><th scope=\"col\">Document<\/th><th scope=\"col\">Information to align<\/th><\/tr><\/thead><tbody><tr><th scope=\"row\">Rated data sheet<\/th><td>Capacity, voltage ratio, frequency, vector group, cooling and loss conditions<\/td><\/tr><tr><th scope=\"row\">Single-line diagram<\/th><td>Radial or loop feed, switch function and fuse\/protection coordination<\/td><\/tr><tr><th scope=\"row\">Connection drawing<\/th><td>Primary interfaces, LV phase and neutral terminals, and earthing points<\/td><\/tr><tr><th scope=\"row\">Overall and foundation drawing<\/th><td>Dimensions, cable openings, anchoring, mass and lifting points<\/td><\/tr><tr><th scope=\"row\">Inspection and test package<\/th><td>Ordered model, acceptance requirements and applicable document scope<\/td><\/tr><\/tbody><\/table><\/div><div class=\"table-notes\"><p>Use the project drawings for the selected electrical variant when planning installation and cable termination.<\/p><\/div><\/div><\/div><ul class=\"content-list\"><li>Capacity, primary voltage, secondary voltage, frequency and winding connection.<\/li><li>Radial or loop feed, the single-line diagram and the required switching\/protection arrangement.<\/li><li>HV and LV cable details, terminal arrangement, neutral and earthing requirements.<\/li><li>Installation environment, quantity, destination and project drawing or testing requirements.<\/li><\/ul><\/div><\/section><\/div><\/details><\/div><\/div><\/section>\n<dialog class=\"oil-modal\" id=\"modal-pad-zgs-150\" data-product-id=\"pad-zgs-150\" aria-labelledby=\"modal-pad-zgs-150-title\"><header><h2 id=\"modal-pad-zgs-150-title\" tabindex=\"-1\">ZGS Pad-mounted Transformer \u2014 150 kVA<\/h2><button class=\"icon-button\" type=\"button\" data-close-modal aria-label=\"Close product details\"><svg viewBox=\"0 0 24 24\" aria-hidden=\"true\"><path d=\"m6 6 12 12M18 6 6 18\"\/><\/svg><\/button><\/header><div class=\"modal-tabs\" role=\"tablist\" aria-label=\"Product details\"><button type=\"button\" role=\"tab\" id=\"modal-pad-zgs-150-tab-overview\" data-modal-tab=\"overview\" aria-controls=\"modal-pad-zgs-150-overview\" aria-selected=\"true\" tabindex=\"0\">Overview<\/button><button type=\"button\" role=\"tab\" id=\"modal-pad-zgs-150-tab-technical\" data-modal-tab=\"technical\" aria-controls=\"modal-pad-zgs-150-technical\" aria-selected=\"false\" tabindex=\"-1\">Technical data<\/button><\/div><div data-modal-scroll><div id=\"modal-pad-zgs-150-overview\" data-modal-panel=\"overview\" role=\"tabpanel\" aria-labelledby=\"modal-pad-zgs-150-tab-overview\" ><div class=\"modal-overview\"><div class=\"modal-gallery\"><div class=\"gallery-stage\"><img loading=\"lazy\" decoding=\"async\" data-gallery-main src=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-transformers-20261025-f082-960-50296cdc.webp\" alt=\"ZGS Pad-mounted Transformer \u2014 150 kVA \u2014 series photograph\" width=\"960\" height=\"960\"><\/div><div class=\"gallery-thumbs\"><button type=\"button\" data-gallery-src=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-transformers-20261025-f082-960-50296cdc.webp\" data-gallery-alt=\"ZGS Pad-mounted Transformer \u2014 150 kVA \u2014 view 1\" data-gallery-caption=\"Series enclosure example with a 12.47 kV nameplate. The 13.8 kV \/ 208 V technical data describe a separate configuration.\" aria-label=\"View product photo 1\" aria-pressed=\"true\"><img decoding=\"async\" src=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-transformers-20261025-f082-480-68c3a16e.webp\" alt=\"\" width=\"90\" height=\"80\" loading=\"lazy\"><\/button><button type=\"button\" data-gallery-src=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-transformers-20261025-f083-960-3629af34.webp\" data-gallery-alt=\"ZGS Pad-mounted Transformer \u2014 150 kVA \u2014 view 2\" data-gallery-caption=\"Series enclosure example with a 12.47 kV nameplate. The 13.8 kV \/ 208 V technical data describe a separate configuration.\" aria-label=\"View product photo 2\" aria-pressed=\"false\"><img decoding=\"async\" src=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-transformers-20261025-f083-480-8a2a18b9.webp\" alt=\"\" width=\"90\" height=\"80\" loading=\"lazy\"><\/button><button type=\"button\" data-gallery-src=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-transformers-20261025-f085-960-1e04916a.webp\" data-gallery-alt=\"ZGS Pad-mounted Transformer \u2014 150 kVA \u2014 view 3\" data-gallery-caption=\"Series enclosure example with a 12.47 kV nameplate. The 13.8 kV \/ 208 V technical data describe a separate configuration.\" aria-label=\"View product photo 3\" aria-pressed=\"false\"><img decoding=\"async\" src=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-transformers-20261025-f085-480-6a561157.webp\" alt=\"\" width=\"90\" height=\"80\" loading=\"lazy\"><\/button><button type=\"button\" data-gallery-src=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-transformers-20261025-f086-960-a3189359.webp\" data-gallery-alt=\"ZGS Pad-mounted Transformer \u2014 150 kVA \u2014 view 4\" data-gallery-caption=\"Series enclosure example with a 12.47 kV nameplate. The 13.8 kV \/ 208 V technical data describe a separate configuration.\" aria-label=\"View product photo 4\" aria-pressed=\"false\"><img decoding=\"async\" src=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-transformers-20261025-f086-480-4dbcc479.webp\" alt=\"\" width=\"90\" height=\"80\" loading=\"lazy\"><\/button><\/div><p data-gallery-caption-text class=\"photo-caption\">Series enclosure example with a 12.47 kV nameplate. The 13.8 kV \/ 208 V technical data describe a separate configuration.<\/p><\/div><div><p>The 150 kVA electrical configuration listed in the Technical data tab has a 13.8 kV delta-connected primary and a 208 V star-connected secondary with neutral, in vector group Dyn11. It supplies three-phase 208 V and phase-to-neutral 120 V circuits at the stated secondary rating.<\/p><p>The design uses copper windings, a silicon-steel core and ONAN cooling. The transformer active part is integrated with the HV load-switch and fuse arrangement and an LV connection compartment. Radial or loop feed is selected to suit the feeder and cabinet layout.<\/p><p>The rated frequency is 60 Hz, with a 50 Hz design option. The parameter table applies to this electrical configuration, including its specified impedance, insulation levels, enclosure protection and ambient range. Those values remain associated with the stated voltage and winding connection.<\/p><p>Series enclosure example with a 12.47 kV nameplate. The 13.8 kV \/ 208 V technical data describe a separate configuration. The cable and installation drawings for the ordered unit establish its termination arrangement, foundation interface and overall dimensions.<\/p><p>For the listed 60 Hz, copper-wound, ONAN configuration, the reference losses are approximately 220 W at no load and 2,100 W at a 75 \u00b0C load-loss reference temperature. These are preliminary specification values. Guaranteed losses and any 50 Hz alternative are defined separately in the approved project data sheet.<\/p><dl class=\"modal-facts\"><div><dt>Rated Capacity<\/dt><dd>150 kVA<\/dd><\/div><div><dt>Rated High Voltage<\/dt><dd>13.8kV, Delta connection<\/dd><\/div><div><dt>Rated Low Voltage<\/dt><dd>208V, Dyn11 with neutral wire. Single phase 120V available<\/dd><\/div><div><dt>Rated Frequency<\/dt><dd>60Hz (North American grid), 50Hz optional<\/dd><\/div><div><dt>Vector Group<\/dt><dd>Dyn11 (HV Delta, LV Star with neutral)<\/dd><\/div><div><dt>Cooling Type<\/dt><dd>ONAN (Oil Natural Air Natural)<\/dd><\/div><\/dl><\/div><\/div><\/div><div id=\"modal-pad-zgs-150-technical\" data-modal-panel=\"technical\" role=\"tabpanel\" aria-labelledby=\"modal-pad-zgs-150-tab-technical\" hidden><div class=\"table-wrap\" role=\"region\" tabindex=\"0\" aria-label=\"150 kVA, 13.8 kV \/ 208 V \u2014 electrical and construction data\"><table class=\"property-table\"><caption>150 kVA, 13.8 kV \/ 208 V \u2014 electrical and construction data<\/caption><thead><tr><th scope=\"col\">Property<\/th><th scope=\"col\">Configuration specification<\/th><\/tr><\/thead><tbody><tr><th scope=\"row\">Rated Capacity<\/th><td>150 kVA<\/td><\/tr><tr><th scope=\"row\">Rated High Voltage<\/th><td>13.8kV, Delta connection<\/td><\/tr><tr><th scope=\"row\">Rated Low Voltage<\/th><td>208V, Dyn11 with neutral wire. Single phase 120V available<\/td><\/tr><tr><th scope=\"row\">Rated Frequency<\/th><td>60Hz (North American grid), 50Hz optional<\/td><\/tr><tr><th scope=\"row\">Vector Group<\/th><td>Dyn11 (HV Delta, LV Star with neutral)<\/td><\/tr><tr><th scope=\"row\">Cooling Type<\/th><td>ONAN (Oil Natural Air Natural)<\/td><\/tr><tr><th scope=\"row\">Winding Material<\/th><td>Copper winding<\/td><\/tr><tr><th scope=\"row\">Core Material<\/th><td>Silicon steel core<\/td><\/tr><tr><th scope=\"row\">Short-circuit Impedance<\/th><td>4.5%<\/td><\/tr><tr><th scope=\"row\">Enclosure Protection<\/th><td>IP54, fully-sealed outdoor housing<\/td><\/tr><tr><th scope=\"row\">Power Frequency Withstand Voltage<\/th><td>34kV (HV side)<\/td><\/tr><tr><th scope=\"row\">Basic Impulse Level (BIL)<\/th><td>95kV<\/td><\/tr><tr><th scope=\"row\">No-load Current<\/th><td>\u22640.8%<\/td><\/tr><tr><th scope=\"row\">Ambient Temperature<\/th><td>-40\u2103 ~ +40\u2103, outdoor installation<\/td><\/tr><tr><th scope=\"row\">Structure<\/th><td>American pad-mounted type, integrated with HV load switch + fuse, transformer core &amp; winding, LV distribution compartment<\/td><\/tr><tr><th scope=\"row\">Feed Type<\/th><td>Loop feed \/ Radial feed, optional<\/td><\/tr><tr><th scope=\"row\">Standards<\/th><td>IEC 60076 \/ ANSI IEEE C57.12.28<\/td><\/tr><\/tbody><\/table><\/div><div class=\"table-notes\"><p>This table describes the 13.8 kV \/ 208 V, three-phase Dyn11, copper-wound configuration. Series enclosure example with a 12.47 kV nameplate. The 13.8 kV \/ 208 V technical data describe a separate configuration.<\/p><p>Standards are specification references. The required test and acceptance documents are defined for the selected model and project.<\/p><\/div><div class=\"table-wrap\" role=\"region\" tabindex=\"0\" aria-label=\"Common electrical fields\"><table class=\"property-table\"><caption>Common electrical fields<\/caption><thead><tr><th scope=\"col\">Property<\/th><th scope=\"col\">Value<\/th><\/tr><\/thead><tbody><tr><th scope=\"row\">HV \/ LV voltage (kV)<\/th><td>13.8 \/ 0.208<\/td><\/tr><tr><th scope=\"row\">Phases<\/th><td>3<\/td><\/tr><tr><th scope=\"row\">Reference frequency (Hz)<\/th><td>60<\/td><\/tr><tr><th scope=\"row\">Vector group<\/th><td>Dyn11<\/td><\/tr><tr><th scope=\"row\">Winding material<\/th><td>Copper<\/td><\/tr><tr><th scope=\"row\">Cooling<\/th><td>ONAN<\/td><\/tr><tr><th scope=\"row\">Load-loss reference temperature (\u00b0C)<\/th><td>75<\/td><\/tr><\/tbody><\/table><\/div><div class=\"table-notes\"><\/div><div class=\"rating-toolbar\"><label>Rated capacity<select data-capacity-filter><option value=\"\">All capacities<\/option><option value=\"150\">150 kVA<\/option><\/select><\/label><p data-filter-status aria-live=\"polite\">1 rating<\/p><\/div><p class=\"scroll-hint\">Scroll across the table to view all columns.<\/p><div class=\"table-wrap\" role=\"region\" tabindex=\"0\" aria-label=\"150 kVA \u00b7 13.8 kV \/ 208 V \u00b7 reference loss data\"><table data-rating-matrix><caption>150 kVA \u00b7 13.8 kV \/ 208 V \u00b7 reference loss data<\/caption><thead><tr><th scope=\"col\">Rated capacity (kVA)<\/th><th scope=\"col\">Approximate no-load loss (W)<\/th><th scope=\"col\">Approximate load loss at 75 \u00b0C (W)<\/th><\/tr><\/thead><tbody><tr data-capacity=\"150\"><th scope=\"row\">150<\/th><td>\u2248220<\/td><td>\u22482100<\/td><\/tr><\/tbody><\/table><\/div><div class=\"table-notes\"><p>Approximate values for preliminary specification. Guaranteed losses follow the approved project data sheet.<\/p><p>The reference applies to the listed 60 Hz configuration. A 50 Hz option requires its own rated data; the 75 \u00b0C figure is the load-loss reference temperature.<\/p><\/div><\/div><\/div><footer><a href=\"#\" class=\"button\" data-inquiry>Request a quotation <svg viewBox=\"0 0 24 24\" aria-hidden=\"true\"><path d=\"M4 12h15m-6-6 6 6-6 6\"\/><\/svg><\/a><\/footer><\/dialog>\n<dialog class=\"oil-modal\" id=\"modal-pad-zgs-500\" data-product-id=\"pad-zgs-500\" aria-labelledby=\"modal-pad-zgs-500-title\"><header><h2 id=\"modal-pad-zgs-500-title\" tabindex=\"-1\">ZGS Pad-mounted Transformer \u2014 500 kVA<\/h2><button class=\"icon-button\" type=\"button\" data-close-modal aria-label=\"Close product details\"><svg viewBox=\"0 0 24 24\" aria-hidden=\"true\"><path d=\"m6 6 12 12M18 6 6 18\"\/><\/svg><\/button><\/header><div class=\"modal-tabs\" role=\"tablist\" aria-label=\"Product details\"><button type=\"button\" role=\"tab\" id=\"modal-pad-zgs-500-tab-overview\" data-modal-tab=\"overview\" aria-controls=\"modal-pad-zgs-500-overview\" aria-selected=\"true\" tabindex=\"0\">Overview<\/button><button type=\"button\" role=\"tab\" id=\"modal-pad-zgs-500-tab-technical\" data-modal-tab=\"technical\" aria-controls=\"modal-pad-zgs-500-technical\" aria-selected=\"false\" tabindex=\"-1\">Technical data<\/button><\/div><div data-modal-scroll><div id=\"modal-pad-zgs-500-overview\" data-modal-panel=\"overview\" role=\"tabpanel\" aria-labelledby=\"modal-pad-zgs-500-tab-overview\" ><div class=\"modal-overview\"><div class=\"modal-gallery\"><div class=\"gallery-stage\"><img loading=\"lazy\" decoding=\"async\" data-gallery-main src=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-transformers-20261025-f091-960-e8f4b400.webp\" alt=\"ZGS Pad-mounted Transformer \u2014 500 kVA \u2014 series photograph\" width=\"960\" height=\"960\"><\/div><div class=\"gallery-thumbs\"><button type=\"button\" data-gallery-src=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-transformers-20261025-f091-960-e8f4b400.webp\" data-gallery-alt=\"ZGS Pad-mounted Transformer \u2014 500 kVA \u2014 view 1\" data-gallery-caption=\"500 kVA, 13.8 kV enclosure example. Winding connection, terminals and accessories follow the selected project configuration.\" aria-label=\"View product photo 1\" aria-pressed=\"true\"><img decoding=\"async\" src=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-transformers-20261025-f091-480-29f2eb06.webp\" alt=\"\" width=\"90\" height=\"80\" loading=\"lazy\"><\/button><button type=\"button\" data-gallery-src=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-transformers-20261025-f089-960-f1049df8.webp\" data-gallery-alt=\"ZGS Pad-mounted Transformer \u2014 500 kVA \u2014 view 2\" data-gallery-caption=\"500 kVA, 13.8 kV enclosure example. Winding connection, terminals and accessories follow the selected project configuration.\" aria-label=\"View product photo 2\" aria-pressed=\"false\"><img decoding=\"async\" src=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-transformers-20261025-f089-480-c6f80c19.webp\" alt=\"\" width=\"90\" height=\"80\" loading=\"lazy\"><\/button><button type=\"button\" data-gallery-src=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-transformers-20261025-f092-960-ead03bc7.webp\" data-gallery-alt=\"ZGS Pad-mounted Transformer \u2014 500 kVA \u2014 view 3\" data-gallery-caption=\"500 kVA, 13.8 kV enclosure example. Winding connection, terminals and accessories follow the selected project configuration.\" aria-label=\"View product photo 3\" aria-pressed=\"false\"><img decoding=\"async\" src=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-transformers-20261025-f092-480-12aced02.webp\" alt=\"\" width=\"90\" height=\"80\" loading=\"lazy\"><\/button><button type=\"button\" data-gallery-src=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-transformers-20261025-f094-960-126d2bce.webp\" data-gallery-alt=\"ZGS Pad-mounted Transformer \u2014 500 kVA \u2014 view 4\" data-gallery-caption=\"500 kVA, 13.8 kV enclosure example. Winding connection, terminals and accessories follow the selected project configuration.\" aria-label=\"View product photo 4\" aria-pressed=\"false\"><img decoding=\"async\" src=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-transformers-20261025-f094-480-888f9d50.webp\" alt=\"\" width=\"90\" height=\"80\" loading=\"lazy\"><\/button><button type=\"button\" data-gallery-src=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-transformers-20261025-f095-960-0b1b0a60.webp\" data-gallery-alt=\"ZGS Pad-mounted Transformer \u2014 500 kVA \u2014 view 5\" data-gallery-caption=\"500 kVA, 13.8 kV enclosure example. Winding connection, terminals and accessories follow the selected project configuration.\" aria-label=\"View product photo 5\" aria-pressed=\"false\"><img decoding=\"async\" src=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-transformers-20261025-f095-480-bea02109.webp\" alt=\"\" width=\"90\" height=\"80\" loading=\"lazy\"><\/button><\/div><p data-gallery-caption-text class=\"photo-caption\">500 kVA, 13.8 kV enclosure example. Winding connection, terminals and accessories follow the selected project configuration.<\/p><\/div><div><p>The 500 kVA electrical configuration listed in the Technical data tab has a 13.8 kV delta-connected primary and a 208 V star-connected secondary with neutral, in vector group Dyn11. It supplies three-phase 208 V and phase-to-neutral 120 V circuits at the stated secondary rating.<\/p><p>The design uses copper windings, a silicon-steel core and ONAN cooling. The transformer active part is integrated with the HV load-switch and fuse arrangement and an LV connection compartment. Radial or loop feed is selected to suit the feeder and cabinet layout.<\/p><p>The rated frequency is 60 Hz, with a 50 Hz design option. The parameter table applies to this electrical configuration, including its specified impedance, insulation levels, enclosure protection and ambient range. Those values remain associated with the stated voltage and winding connection.<\/p><p>500 kVA, 13.8 kV enclosure example. Winding connection, terminals and accessories follow the selected project configuration. The cable and installation drawings for the ordered unit establish its termination arrangement, foundation interface and overall dimensions.<\/p><p>For the listed 60 Hz, copper-wound, ONAN configuration, the reference losses are approximately 420 W at no load and 4,200 W at a 75 \u00b0C load-loss reference temperature. These are preliminary specification values. Guaranteed losses and any 50 Hz alternative are defined separately in the approved project data sheet.<\/p><dl class=\"modal-facts\"><div><dt>Rated Capacity<\/dt><dd>500 kVA<\/dd><\/div><div><dt>Rated High Voltage<\/dt><dd>13.8kV, Delta connection<\/dd><\/div><div><dt>Rated Low Voltage<\/dt><dd>208V, Dyn11 with neutral wire. Single phase 120V available<\/dd><\/div><div><dt>Rated Frequency<\/dt><dd>60Hz (North American grid), 50Hz optional<\/dd><\/div><div><dt>Vector Group<\/dt><dd>Dyn11 (HV Delta, LV Star with neutral)<\/dd><\/div><div><dt>Cooling Type<\/dt><dd>ONAN (Oil Natural Air Natural)<\/dd><\/div><\/dl><\/div><\/div><\/div><div id=\"modal-pad-zgs-500-technical\" data-modal-panel=\"technical\" role=\"tabpanel\" aria-labelledby=\"modal-pad-zgs-500-tab-technical\" hidden><div class=\"table-wrap\" role=\"region\" tabindex=\"0\" aria-label=\"500 kVA, 13.8 kV \/ 208 V \u2014 electrical and construction data\"><table class=\"property-table\"><caption>500 kVA, 13.8 kV \/ 208 V \u2014 electrical and construction data<\/caption><thead><tr><th scope=\"col\">Property<\/th><th scope=\"col\">Configuration specification<\/th><\/tr><\/thead><tbody><tr><th scope=\"row\">Rated Capacity<\/th><td>500 kVA<\/td><\/tr><tr><th scope=\"row\">Rated High Voltage<\/th><td>13.8kV, Delta connection<\/td><\/tr><tr><th scope=\"row\">Rated Low Voltage<\/th><td>208V, Dyn11 with neutral wire. Single phase 120V available<\/td><\/tr><tr><th scope=\"row\">Rated Frequency<\/th><td>60Hz (North American grid), 50Hz optional<\/td><\/tr><tr><th scope=\"row\">Vector Group<\/th><td>Dyn11 (HV Delta, LV Star with neutral)<\/td><\/tr><tr><th scope=\"row\">Cooling Type<\/th><td>ONAN (Oil Natural Air Natural)<\/td><\/tr><tr><th scope=\"row\">Winding Material<\/th><td>Copper winding<\/td><\/tr><tr><th scope=\"row\">Core Material<\/th><td>Silicon steel core<\/td><\/tr><tr><th scope=\"row\">Short-circuit Impedance<\/th><td>4.5%<\/td><\/tr><tr><th scope=\"row\">Enclosure Protection<\/th><td>IP54, fully-sealed outdoor housing<\/td><\/tr><tr><th scope=\"row\">Power Frequency Withstand Voltage<\/th><td>34kV (HV side)<\/td><\/tr><tr><th scope=\"row\">Basic Impulse Level (BIL)<\/th><td>95kV<\/td><\/tr><tr><th scope=\"row\">No-load Current<\/th><td>\u22640.7%<\/td><\/tr><tr><th scope=\"row\">Ambient Temperature<\/th><td>-40\u2103 ~ +40\u2103, outdoor installation<\/td><\/tr><tr><th scope=\"row\">Structure<\/th><td>American pad-mounted type, integrated with HV load switch + fuse, transformer core &amp; winding, LV distribution compartment<\/td><\/tr><tr><th scope=\"row\">Feed Type<\/th><td>Loop feed \/ Radial feed, optional<\/td><\/tr><tr><th scope=\"row\">Standards<\/th><td>IEC 60076 \/ ANSI IEEE C57.12.28<\/td><\/tr><\/tbody><\/table><\/div><div class=\"table-notes\"><p>This table describes the 13.8 kV \/ 208 V, three-phase Dyn11, copper-wound configuration. 500 kVA, 13.8 kV enclosure example. Winding connection, terminals and accessories follow the selected project configuration.<\/p><p>Standards are specification references. The required test and acceptance documents are defined for the selected model and project.<\/p><\/div><div class=\"table-wrap\" role=\"region\" tabindex=\"0\" aria-label=\"Common electrical fields\"><table class=\"property-table\"><caption>Common electrical fields<\/caption><thead><tr><th scope=\"col\">Property<\/th><th scope=\"col\">Value<\/th><\/tr><\/thead><tbody><tr><th scope=\"row\">HV \/ LV voltage (kV)<\/th><td>13.8 \/ 0.208<\/td><\/tr><tr><th scope=\"row\">Phases<\/th><td>3<\/td><\/tr><tr><th scope=\"row\">Reference frequency (Hz)<\/th><td>60<\/td><\/tr><tr><th scope=\"row\">Vector group<\/th><td>Dyn11<\/td><\/tr><tr><th scope=\"row\">Winding material<\/th><td>Copper<\/td><\/tr><tr><th scope=\"row\">Cooling<\/th><td>ONAN<\/td><\/tr><tr><th scope=\"row\">Load-loss reference temperature (\u00b0C)<\/th><td>75<\/td><\/tr><\/tbody><\/table><\/div><div class=\"table-notes\"><\/div><div class=\"rating-toolbar\"><label>Rated capacity<select data-capacity-filter><option value=\"\">All capacities<\/option><option value=\"500\">500 kVA<\/option><\/select><\/label><p data-filter-status aria-live=\"polite\">1 rating<\/p><\/div><p class=\"scroll-hint\">Scroll across the table to view all columns.<\/p><div class=\"table-wrap\" role=\"region\" tabindex=\"0\" aria-label=\"500 kVA \u00b7 13.8 kV \/ 208 V \u00b7 reference loss data\"><table data-rating-matrix><caption>500 kVA \u00b7 13.8 kV \/ 208 V \u00b7 reference loss data<\/caption><thead><tr><th scope=\"col\">Rated capacity (kVA)<\/th><th scope=\"col\">Approximate no-load loss (W)<\/th><th scope=\"col\">Approximate load loss at 75 \u00b0C (W)<\/th><\/tr><\/thead><tbody><tr data-capacity=\"500\"><th scope=\"row\">500<\/th><td>\u2248420<\/td><td>\u22484200<\/td><\/tr><\/tbody><\/table><\/div><div class=\"table-notes\"><p>Approximate values for preliminary specification. Guaranteed losses follow the approved project data sheet.<\/p><p>The reference applies to the listed 60 Hz configuration. A 50 Hz option requires its own rated data; the 75 \u00b0C figure is the load-loss reference temperature.<\/p><\/div><\/div><\/div><footer><a href=\"#\" class=\"button\" data-inquiry>Request a quotation <svg viewBox=\"0 0 24 24\" aria-hidden=\"true\"><path d=\"M4 12h15m-6-6 6 6-6 6\"\/><\/svg><\/a><\/footer><\/dialog>\n<dialog class=\"oil-modal\" id=\"modal-pad-zgs-1000\" data-product-id=\"pad-zgs-1000\" aria-labelledby=\"modal-pad-zgs-1000-title\"><header><h2 id=\"modal-pad-zgs-1000-title\" tabindex=\"-1\">ZGS Pad-mounted Transformer \u2014 1,000 kVA<\/h2><button class=\"icon-button\" type=\"button\" data-close-modal aria-label=\"Close product details\"><svg viewBox=\"0 0 24 24\" aria-hidden=\"true\"><path d=\"m6 6 12 12M18 6 6 18\"\/><\/svg><\/button><\/header><div class=\"modal-tabs\" role=\"tablist\" aria-label=\"Product details\"><button type=\"button\" role=\"tab\" id=\"modal-pad-zgs-1000-tab-overview\" data-modal-tab=\"overview\" aria-controls=\"modal-pad-zgs-1000-overview\" aria-selected=\"true\" tabindex=\"0\">Overview<\/button><button type=\"button\" role=\"tab\" id=\"modal-pad-zgs-1000-tab-technical\" data-modal-tab=\"technical\" aria-controls=\"modal-pad-zgs-1000-technical\" aria-selected=\"false\" tabindex=\"-1\">Technical data<\/button><\/div><div data-modal-scroll><div id=\"modal-pad-zgs-1000-overview\" data-modal-panel=\"overview\" role=\"tabpanel\" aria-labelledby=\"modal-pad-zgs-1000-tab-overview\" ><div class=\"modal-overview\"><div class=\"modal-gallery\"><div class=\"gallery-stage\"><img loading=\"lazy\" decoding=\"async\" data-gallery-main src=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-transformers-20261025-f074-960-1b426e33.webp\" alt=\"ZGS Pad-mounted Transformer \u2014 1,000 kVA \u2014 series photograph\" width=\"960\" height=\"960\"><\/div><div class=\"gallery-thumbs\"><button type=\"button\" data-gallery-src=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-transformers-20261025-f074-960-1b426e33.webp\" data-gallery-alt=\"ZGS Pad-mounted Transformer \u2014 1,000 kVA \u2014 view 1\" data-gallery-caption=\"Series enclosure example with a 12.47 kV nameplate. The 13.8 kV \/ 208 V technical data describe a separate configuration.\" aria-label=\"View product photo 1\" aria-pressed=\"true\"><img decoding=\"async\" src=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-transformers-20261025-f074-480-c85e733c.webp\" alt=\"\" width=\"90\" height=\"80\" loading=\"lazy\"><\/button><button type=\"button\" data-gallery-src=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-transformers-20261025-f072-960-30c9cefc.webp\" data-gallery-alt=\"ZGS Pad-mounted Transformer \u2014 1,000 kVA \u2014 view 2\" data-gallery-caption=\"Series enclosure example with a 12.47 kV nameplate. The 13.8 kV \/ 208 V technical data describe a separate configuration.\" aria-label=\"View product photo 2\" aria-pressed=\"false\"><img decoding=\"async\" src=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-transformers-20261025-f072-480-ae4484e0.webp\" alt=\"\" width=\"90\" height=\"80\" loading=\"lazy\"><\/button><button type=\"button\" data-gallery-src=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-transformers-20261025-f075-960-81b079c1.webp\" data-gallery-alt=\"ZGS Pad-mounted Transformer \u2014 1,000 kVA \u2014 view 3\" data-gallery-caption=\"Series enclosure example with a 12.47 kV nameplate. The 13.8 kV \/ 208 V technical data describe a separate configuration.\" aria-label=\"View product photo 3\" aria-pressed=\"false\"><img decoding=\"async\" src=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-transformers-20261025-f075-480-64152e10.webp\" alt=\"\" width=\"90\" height=\"80\" loading=\"lazy\"><\/button><button type=\"button\" data-gallery-src=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-transformers-20261025-f077-960-3e528754.webp\" data-gallery-alt=\"ZGS Pad-mounted Transformer \u2014 1,000 kVA \u2014 view 4\" data-gallery-caption=\"Series enclosure example with a 12.47 kV nameplate. The 13.8 kV \/ 208 V technical data describe a separate configuration.\" aria-label=\"View product photo 4\" aria-pressed=\"false\"><img decoding=\"async\" src=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-transformers-20261025-f077-480-dbcc35c4.webp\" alt=\"\" width=\"90\" height=\"80\" loading=\"lazy\"><\/button><button type=\"button\" data-gallery-src=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-transformers-20261025-f078-960-0083a737.webp\" data-gallery-alt=\"ZGS Pad-mounted Transformer \u2014 1,000 kVA \u2014 view 5\" data-gallery-caption=\"Series enclosure example with a 12.47 kV nameplate. The 13.8 kV \/ 208 V technical data describe a separate configuration.\" aria-label=\"View product photo 5\" aria-pressed=\"false\"><img decoding=\"async\" src=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/10\/subia-transformers-20261025-f078-480-c6480ff5.webp\" alt=\"\" width=\"90\" height=\"80\" loading=\"lazy\"><\/button><\/div><p data-gallery-caption-text class=\"photo-caption\">Series enclosure example with a 12.47 kV nameplate. The 13.8 kV \/ 208 V technical data describe a separate configuration.<\/p><\/div><div><p>The 1,000 kVA electrical configuration listed in the Technical data tab has a 13.8 kV delta-connected primary and a 208 V star-connected secondary with neutral, in vector group Dyn11. It supplies three-phase 208 V and phase-to-neutral 120 V circuits at the stated secondary rating.<\/p><p>The design uses copper windings, a silicon-steel core and ONAN cooling. The transformer active part is integrated with the HV load-switch and fuse arrangement and an LV connection compartment. Radial or loop feed is selected to suit the feeder and cabinet layout.<\/p><p>The rated frequency is 60 Hz, with a 50 Hz design option. The parameter table applies to this electrical configuration, including its specified impedance, insulation levels, enclosure protection and ambient range. Those values remain associated with the stated voltage and winding connection.<\/p><p>Series enclosure example with a 12.47 kV nameplate. The 13.8 kV \/ 208 V technical data describe a separate configuration. The cable and installation drawings for the ordered unit establish its termination arrangement, foundation interface and overall dimensions.<\/p><p>For the listed 60 Hz, copper-wound, ONAN configuration, the reference losses are approximately 680 W at no load and 6,900 W at a 75 \u00b0C load-loss reference temperature. These are preliminary specification values. Guaranteed losses and any 50 Hz alternative are defined separately in the approved project data sheet.<\/p><dl class=\"modal-facts\"><div><dt>Rated Capacity<\/dt><dd>1000 kVA<\/dd><\/div><div><dt>Rated High Voltage<\/dt><dd>13.8kV, Delta connection<\/dd><\/div><div><dt>Rated Low Voltage<\/dt><dd>208V, Dyn11 with neutral wire. Single phase 120V available<\/dd><\/div><div><dt>Rated Frequency<\/dt><dd>60Hz (North American grid), 50Hz optional<\/dd><\/div><div><dt>Vector Group<\/dt><dd>Dyn11 (HV Delta, LV Star with neutral)<\/dd><\/div><div><dt>Cooling Type<\/dt><dd>ONAN (Oil Natural Air Natural)<\/dd><\/div><\/dl><\/div><\/div><\/div><div id=\"modal-pad-zgs-1000-technical\" data-modal-panel=\"technical\" role=\"tabpanel\" aria-labelledby=\"modal-pad-zgs-1000-tab-technical\" hidden><div class=\"table-wrap\" role=\"region\" tabindex=\"0\" aria-label=\"1,000 kVA, 13.8 kV \/ 208 V \u2014 electrical and construction data\"><table class=\"property-table\"><caption>1,000 kVA, 13.8 kV \/ 208 V \u2014 electrical and construction data<\/caption><thead><tr><th scope=\"col\">Property<\/th><th scope=\"col\">Configuration specification<\/th><\/tr><\/thead><tbody><tr><th scope=\"row\">Rated Capacity<\/th><td>1000 kVA<\/td><\/tr><tr><th scope=\"row\">Rated High Voltage<\/th><td>13.8kV, Delta connection<\/td><\/tr><tr><th scope=\"row\">Rated Low Voltage<\/th><td>208V, Dyn11 with neutral wire. Single phase 120V available<\/td><\/tr><tr><th scope=\"row\">Rated Frequency<\/th><td>60Hz (North American grid), 50Hz optional<\/td><\/tr><tr><th scope=\"row\">Vector Group<\/th><td>Dyn11 (HV Delta, LV Star with neutral)<\/td><\/tr><tr><th scope=\"row\">Cooling Type<\/th><td>ONAN (Oil Natural Air Natural)<\/td><\/tr><tr><th scope=\"row\">Winding Material<\/th><td>Copper winding<\/td><\/tr><tr><th scope=\"row\">Core Material<\/th><td>Silicon steel core<\/td><\/tr><tr><th scope=\"row\">Short-circuit Impedance<\/th><td>5.75%<\/td><\/tr><tr><th scope=\"row\">Enclosure Protection<\/th><td>IP54, fully-sealed outdoor housing<\/td><\/tr><tr><th scope=\"row\">Power Frequency Withstand Voltage<\/th><td>34kV (HV side)<\/td><\/tr><tr><th scope=\"row\">Basic Impulse Level (BIL)<\/th><td>95kV<\/td><\/tr><tr><th scope=\"row\">No-load Current<\/th><td>\u22640.6%<\/td><\/tr><tr><th scope=\"row\">Ambient Temperature<\/th><td>-40\u2103 ~ +40\u2103, outdoor installation<\/td><\/tr><tr><th scope=\"row\">Structure<\/th><td>American pad-mounted type, integrated with HV load switch + fuse, transformer core &amp; winding, LV distribution compartment<\/td><\/tr><tr><th scope=\"row\">Feed Type<\/th><td>Loop feed \/ Radial feed, optional<\/td><\/tr><tr><th scope=\"row\">Standards<\/th><td>IEC 60076 \/ ANSI IEEE C57.12.28<\/td><\/tr><\/tbody><\/table><\/div><div class=\"table-notes\"><p>This table describes the 13.8 kV \/ 208 V, three-phase Dyn11, copper-wound configuration. Series enclosure example with a 12.47 kV nameplate. The 13.8 kV \/ 208 V technical data describe a separate configuration.<\/p><p>Standards are specification references. The required test and acceptance documents are defined for the selected model and project.<\/p><\/div><div class=\"table-wrap\" role=\"region\" tabindex=\"0\" aria-label=\"Common electrical fields\"><table class=\"property-table\"><caption>Common electrical fields<\/caption><thead><tr><th scope=\"col\">Property<\/th><th scope=\"col\">Value<\/th><\/tr><\/thead><tbody><tr><th scope=\"row\">HV \/ LV voltage (kV)<\/th><td>13.8 \/ 0.208<\/td><\/tr><tr><th scope=\"row\">Phases<\/th><td>3<\/td><\/tr><tr><th scope=\"row\">Reference frequency (Hz)<\/th><td>60<\/td><\/tr><tr><th scope=\"row\">Vector group<\/th><td>Dyn11<\/td><\/tr><tr><th scope=\"row\">Winding material<\/th><td>Copper<\/td><\/tr><tr><th scope=\"row\">Cooling<\/th><td>ONAN<\/td><\/tr><tr><th scope=\"row\">Load-loss reference temperature (\u00b0C)<\/th><td>75<\/td><\/tr><\/tbody><\/table><\/div><div class=\"table-notes\"><\/div><div class=\"rating-toolbar\"><label>Rated capacity<select data-capacity-filter><option value=\"\">All capacities<\/option><option value=\"1000\">1000 kVA<\/option><\/select><\/label><p data-filter-status aria-live=\"polite\">1 rating<\/p><\/div><p class=\"scroll-hint\">Scroll across the table to view all columns.<\/p><div class=\"table-wrap\" role=\"region\" tabindex=\"0\" aria-label=\"1,000 kVA \u00b7 13.8 kV \/ 208 V \u00b7 reference loss data\"><table data-rating-matrix><caption>1,000 kVA \u00b7 13.8 kV \/ 208 V \u00b7 reference loss data<\/caption><thead><tr><th scope=\"col\">Rated capacity (kVA)<\/th><th scope=\"col\">Approximate no-load loss (W)<\/th><th scope=\"col\">Approximate load loss at 75 \u00b0C (W)<\/th><\/tr><\/thead><tbody><tr data-capacity=\"1000\"><th scope=\"row\">1000<\/th><td>\u2248680<\/td><td>\u22486900<\/td><\/tr><\/tbody><\/table><\/div><div class=\"table-notes\"><p>Approximate values for preliminary specification. Guaranteed losses follow the approved project data sheet.<\/p><p>The reference applies to the listed 60 Hz configuration. A 50 Hz option requires its own rated data; the 75 \u00b0C figure is the load-loss reference temperature.<\/p><\/div><\/div><\/div><footer><a href=\"#\" class=\"button\" data-inquiry>Request a quotation <svg viewBox=\"0 0 24 24\" aria-hidden=\"true\"><path d=\"M4 12h15m-6-6 6 6-6 6\"\/><\/svg><\/a><\/footer><\/dialog>\n<\/div>\n\n<script src=\"https:\/\/subiapower.com\/wp-content\/plugins\/subia-alpha-closeout\/cache\/f990a4355dbe89dfe554.js\" id=\"subia-oil-template-runtime\" data-subia-cache=\"97689054054c\"><\/script>\n\n<link rel=\"stylesheet\" href=\"https:\/\/subiapower.com\/wp-content\/plugins\/subia-alpha-closeout\/cache\/0db60f15c74518e5317d.css\" id=\"subia-sec2-cards-1018\" data-subia-cache=\"0db60f15c745\">\n<style id=\"product-detail-composition-1018\">\n\/* Individual product-detail composition: preserve original hero and product photography. 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window.addEventListener('hashchange',()=>reveal(location.hash));reveal(location.hash);\n})();\n<\/script>\n\n<!-- PRODUCT_DETAIL_NATIVE_GUIDES -->\n\n<style id=\"product-detail-guides-style\">\n.entry-content .pd-guides{background:#fff;padding:72px 0 80px;max-width:none;font-family:Lexend,sans-serif;color:#102f3a;margin-block:0}\n.pd-guides .pd-guides-rail{width:min(calc(100% - 80px),1350px);margin-inline:auto}\n.pd-guides .pd-guides-heading{display:flex;justify-content:space-between;align-items:end;gap:40px;margin-bottom:32px}\n.pd-guides .pd-guides-heading h2{font:500 clamp(30px,3vw,42px)\/1.15 Lexend,sans-serif;letter-spacing:-.025em;color:#102f3a;max-width:22ch;margin:0}\n.pd-guides .pd-guides-heading>a{font-size:14px;color:#14757a;text-underline-offset:5px;flex-shrink:0}\n.pd-guides .wp-block-post-template{display:grid!important;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px;list-style:none;margin:0;padding:0}\n.pd-guides 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.pd-guides{padding-block:48px}.pd-guides .pd-guides-rail{width:calc(100% - 40px)}.pd-guides .pd-guides-heading{display:block}.pd-guides .pd-guides-heading h2{margin-bottom:20px}.pd-guides .wp-block-post-template{grid-template-columns:1fr;gap:26px}.pd-guides .wp-block-post-title{font-size:20px;padding:22px}}\n<\/style>\n\n\n<section id=\"detail-guides-1018\" class=\"wp-block-group alignfull pd-guides is-layout-flow wp-block-group-is-layout-flow\"><div class=\"wp-block-group pd-guides-rail is-layout-flow wp-block-group-is-layout-flow\">\n<header class=\"pd-guides-heading\"><h2>Pad-mounted Transformer Technical Guides<\/h2><a href=\"https:\/\/subiapower.com\/resources\/\">View all resources<\/a><\/header>\n\n<div class=\"wp-block-query pd-guides-query is-layout-flow wp-block-query-is-layout-flow\">\n<ul class=\"columns-3 wp-block-post-template is-layout-grid wp-container-core-post-template-is-layout-18ef8054 wp-block-post-template-is-layout-grid\"><li class=\"wp-block-post post-1944 post type-post status-publish format-standard has-post-thumbnail hentry category-technical-resources\">\n<figure class=\"wp-block-post-featured-image\"><a href=\"https:\/\/subiapower.com\/ru\/pad-mounted-transformer-vs-compact-substation-what-is-included\/\" target=\"_self\" ><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/11\/featured-final-24-1024x683.webp\" class=\"attachment-large size-large wp-post-image\" alt=\"Pad-Mounted Transformer vs Compact Substation: What Is Included?\" style=\"aspect-ratio:3\/2;width:100%;object-fit:contain;\" srcset=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/11\/featured-final-24-1024x683.webp 1024w, https:\/\/subiapower.com\/wp-content\/uploads\/2026\/11\/featured-final-24-300x200.webp 300w, https:\/\/subiapower.com\/wp-content\/uploads\/2026\/11\/featured-final-24-768x512.webp 768w, https:\/\/subiapower.com\/wp-content\/uploads\/2026\/11\/featured-final-24-18x12.webp 18w, https:\/\/subiapower.com\/wp-content\/uploads\/2026\/11\/featured-final-24.webp 1536w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n<h3 class=\"wp-block-post-title\"><a href=\"https:\/\/subiapower.com\/ru\/pad-mounted-transformer-vs-compact-substation-what-is-included\/\" target=\"_self\" >Pad-Mounted Transformer vs Compact Substation: What Is Included?<\/a><\/h3>\n<div class=\"wp-block-post-excerpt\"><p class=\"wp-block-post-excerpt__excerpt\">Follow the same three LV feeders through two example quotations and see which equipment and interfaces each package covers.<\/p><p class=\"wp-block-post-excerpt__more-text\"><a class=\"wp-block-post-excerpt__more-link\" href=\"https:\/\/subiapower.com\/ru\/pad-mounted-transformer-vs-compact-substation-what-is-included\/\">Read guide<\/a><\/p><\/div>\n<\/li><li class=\"wp-block-post post-1876 post type-post status-publish format-standard has-post-thumbnail hentry category-technical-resources\">\n<figure class=\"wp-block-post-featured-image\"><a href=\"https:\/\/subiapower.com\/ru\/pad-mounted-transformer-interfaces-radial-or-loop-feed-deadfront-or-livefront\/\" target=\"_self\" ><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/11\/featured-final-21-1024x683.webp\" class=\"attachment-large size-large wp-post-image\" alt=\"Pad-Mounted Transformer Interfaces: Radial or Loop Feed, Deadfront or Livefront?\" style=\"aspect-ratio:3\/2;width:100%;object-fit:contain;\" srcset=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/11\/featured-final-21-1024x683.webp 1024w, https:\/\/subiapower.com\/wp-content\/uploads\/2026\/11\/featured-final-21-300x200.webp 300w, https:\/\/subiapower.com\/wp-content\/uploads\/2026\/11\/featured-final-21-768x512.webp 768w, https:\/\/subiapower.com\/wp-content\/uploads\/2026\/11\/featured-final-21-18x12.webp 18w, https:\/\/subiapower.com\/wp-content\/uploads\/2026\/11\/featured-final-21.webp 1536w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n<h3 class=\"wp-block-post-title\"><a href=\"https:\/\/subiapower.com\/ru\/pad-mounted-transformer-interfaces-radial-or-loop-feed-deadfront-or-livefront\/\" target=\"_self\" >Pad-Mounted Transformer Interfaces: Radial or Loop Feed, Deadfront or Livefront?<\/a><\/h3>\n<div class=\"wp-block-post-excerpt\"><p class=\"wp-block-post-excerpt__excerpt\">Separate the primary feeder path from the termination type and compare transformer offers against the actual project interface.<\/p><p class=\"wp-block-post-excerpt__more-text\"><a class=\"wp-block-post-excerpt__more-link\" href=\"https:\/\/subiapower.com\/ru\/pad-mounted-transformer-interfaces-radial-or-loop-feed-deadfront-or-livefront\/\">Read guide<\/a><\/p><\/div>\n<\/li><li class=\"wp-block-post post-1771 post type-post status-publish format-standard has-post-thumbnail hentry category-technical-resources\">\n<figure class=\"wp-block-post-featured-image\"><a href=\"https:\/\/subiapower.com\/ru\/what-is-a-pad-mounted-transformer-parts-layout-and-typical-uses\/\" target=\"_self\" ><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/11\/featured-final-6-1024x683.webp\" class=\"attachment-large size-large wp-post-image\" alt=\"What Is a Pad-Mounted Transformer? Parts, Layout and Typical Uses\" style=\"aspect-ratio:3\/2;width:100%;object-fit:contain;\" srcset=\"https:\/\/subiapower.com\/wp-content\/uploads\/2026\/11\/featured-final-6-1024x683.webp 1024w, https:\/\/subiapower.com\/wp-content\/uploads\/2026\/11\/featured-final-6-300x200.webp 300w, https:\/\/subiapower.com\/wp-content\/uploads\/2026\/11\/featured-final-6-768x512.webp 768w, https:\/\/subiapower.com\/wp-content\/uploads\/2026\/11\/featured-final-6-18x12.webp 18w, https:\/\/subiapower.com\/wp-content\/uploads\/2026\/11\/featured-final-6.webp 1536w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n<h3 class=\"wp-block-post-title\"><a href=\"https:\/\/subiapower.com\/ru\/what-is-a-pad-mounted-transformer-parts-layout-and-typical-uses\/\" target=\"_self\" >What Is a Pad-Mounted Transformer? Parts, Layout and Typical Uses<\/a><\/h3>\n<div class=\"wp-block-post-excerpt\"><p class=\"wp-block-post-excerpt__excerpt\">A guide to the ground-level cabinet, underground cable approach, compartment layout and typical uses.<\/p><p class=\"wp-block-post-excerpt__more-text\"><a class=\"wp-block-post-excerpt__more-link\" href=\"https:\/\/subiapower.com\/ru\/what-is-a-pad-mounted-transformer-parts-layout-and-typical-uses\/\">Read guide<\/a><\/p><\/div>\n<\/li><\/ul>\n<\/div>\n\n<\/div>\n<\/section>\n\n\n<style id=\"product-sec-alignment-1018\">\n\/* 1018: actual RD controls, three named capacities, and separate ZGS family scope. *\/\nbody.page-id-1018 #subia-oil-template.rd-page-1018 {--rd-ink:#102f3a;--rd-deep:#062b31;--rd-pale:#eef3f4;--rd-teal:#14757a}\nbody.page-id-1018 #subia-oil-template.rd-page-1018 >.oil-section>.rail{width:min(calc(100% - 80px),1350px)}\nbody.page-id-1018 #subia-oil-template.rd-page-1018 .section-nav>.rail{gap:32px;min-height:58px}\nbody.page-id-1018 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.alignment-data-matrix tbody{display:grid;gap:20px}\nbody.page-id-1018 #subia-oil-template.rd-page-1018 #pad-engineering .alignment-data-matrix tbody tr{display:block;background:#fff;border:0}\nbody.page-id-1018 #subia-oil-template.rd-page-1018 #pad-engineering .alignment-data-matrix tbody th{display:block;width:100%;padding:16px 18px;background:#102f3a;color:#fff;font-size:18px;line-height:1.35;border:0}\nbody.page-id-1018 #subia-oil-template.rd-page-1018 #pad-engineering .alignment-data-matrix tbody td{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:14px;width:100%;max-width:none;min-width:0;padding:14px 18px;background:#fff;color:#355761;font-size:14px;line-height:1.65;border:0;border-bottom:1px solid #d2dfe2;overflow-wrap:break-word}\nbody.page-id-1018 #subia-oil-template.rd-page-1018 #pad-engineering .alignment-data-matrix tbody td::before{content:attr(data-label);color:#4b6972;font-size:12px;font-weight:400;line-height:1.65}\nbody.page-id-1018 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.section-heading{gap:20px;margin-bottom:28px}\nbody.page-id-1018 #subia-oil-template.rd-page-1018 #applications .section-heading p{font-size:15px}\nbody.page-id-1018 #subia-oil-template.rd-page-1018 #applications .app-explorer.is-interactive{display:flex;flex-direction:column;gap:24px}\nbody.page-id-1018 #subia-oil-template.rd-page-1018 #applications .app-explorer.is-interactive .app-tabs{display:flex;flex-direction:row;width:100%;max-width:100%;overflow-x:auto;overscroll-behavior-x:contain;gap:0;scrollbar-width:thin;scrollbar-color:#14757a #dce6e8}\nbody.page-id-1018 #subia-oil-template.rd-page-1018 #applications .app-tab{width:226px;flex:0 0 226px;grid-template-columns:54px minmax(0,1fr);min-height:80px;font-size:14px;padding:14px 12px;gap:12px}\nbody.page-id-1018 #subia-oil-template.rd-page-1018 #applications .app-tab img{width:54px}\nbody.page-id-1018 #subia-oil-template.rd-page-1018 #applications .app-panel-copy{padding:0}\nbody.page-id-1018 #subia-oil-template.rd-page-1018 #applications .application-coordination{padding:23px 22px}\nbody.page-id-1018 #subia-oil-template.rd-page-1018 #site-conditions{padding-block:48px}\nbody.page-id-1018 #subia-oil-template.rd-page-1018 #site-conditions>.rail{grid-template-columns:1fr;gap:30px}\nbody.page-id-1018 #subia-oil-template.rd-page-1018 #site-conditions .rd-faq-intro h2{max-width:15ch;font-size:32px}\nbody.page-id-1018 #subia-oil-template.rd-page-1018 #site-conditions .rd-faq-intro p{font-size:14px;line-height:1.8}\nbody.page-id-1018 #subia-oil-template.rd-page-1018 #site-conditions .rd-faq>summary{min-height:74px;padding:20px;font-size:16px}\nbody.page-id-1018 .entry-content #detail-guides-1018 .wp-block-post-title{font-size:20px;padding:22px 22px 16px}\nbody.page-id-1018 .entry-content #detail-guides-1018 .wp-block-post-excerpt{padding-inline:22px}\n}\n@media(max-width:360px){\nbody.page-id-1018 #subia-oil-template.rd-page-1018 #pad-engineering .alignment-data-matrix tbody td{display:block}\nbody.page-id-1018 #subia-oil-template.rd-page-1018 #pad-engineering .alignment-data-matrix tbody td::before{display:block;margin-bottom:6px}\n}\n@media(prefers-reduced-motion:reduce){\nbody.page-id-1018 #subia-oil-template.rd-page-1018 #series .sc-card{transition:none}\n}\n<\/style>\n\n\n\n<style id=\"product-rail-fix-1018\">\n\/* product-rail-fix-1018: top-level body and guide rails *\/\nbody.page-id-1018 #post-1018 .entry-content #subia-oil-template > section.oil-section > .rail,\nbody.page-id-1018 #post-1018 .entry-content #detail-guides-1018 .pd-guides-rail{width:min(calc(100% - 80px),1350px)!important;max-width:1350px!important;margin-inline:auto!important}\n@media(max-width:900px){body.page-id-1018 #post-1018 .entry-content #subia-oil-template > section.oil-section > .rail,\nbody.page-id-1018 #post-1018 .entry-content #detail-guides-1018 .pd-guides-rail{width:min(calc(100% - 48px),1350px)!important}}\n@media(max-width:600px){body.page-id-1018 #post-1018 .entry-content #subia-oil-template > section.oil-section > .rail,\nbody.page-id-1018 #post-1018 .entry-content #detail-guides-1018 .pd-guides-rail{width:min(calc(100% - 40px),1350px)!important}}\n\n\/* Match the oil template's tablet layout for applications and related guides. *\/\n@media (min-width: 1001px) and (max-width: 1200px) {\n  body.page-id-1018 #post-1018 #subia-oil-template #applications .app-explorer.is-interactive {\n    grid-template-columns: minmax(0, 63fr) minmax(0, 37fr);\n    gap: 32px;\n  }\n}\n@media (min-width: 768px) and (max-width: 1000px) {\n  body.page-id-1018 #post-1018 #subia-oil-template #applications .app-explorer.is-interactive {\n    grid-template-columns: minmax(0, 60fr) minmax(0, 40fr);\n    gap: 24px;\n  }\n  body.page-id-1018 #post-1018 #subia-oil-template #applications .app-tab {\n    grid-template-columns: 68px minmax(0, 1fr);\n    gap: 14px;\n    min-height: 102px;\n    padding: 18px 12px;\n    font-size: 16px;\n  }\n  body.page-id-1018 #post-1018 #subia-oil-template #applications .app-tab img { width: 68px; }\n  body.page-id-1018 #post-1018 #subia-oil-template #applications .app-tab > svg { display: none; }\n}\n@media (min-width: 700px) and (max-width: 767px) {\n  body.page-id-1018 #post-1018 #subia-oil-template #applications .app-tab {\n    width: 226px;\n    flex: 0 0 226px;\n    grid-template-columns: 54px minmax(0, 1fr);\n    gap: 12px;\n    min-height: 80px;\n    padding: 14px 12px;\n    font-size: 14px;\n  }\n  body.page-id-1018 #post-1018 #subia-oil-template #applications .app-tab img { width: 54px; }\n}\n@media (min-width: 700px) and (max-width: 1099px) {\n  body.page-id-1018 #post-1018 .entry-content #detail-guides-1018 .wp-block-post-template {\n    grid-template-columns: repeat(2, minmax(0, 1fr));\n    gap: 24px;\n  }\n  body.page-id-1018 #post-1018 .entry-content #detail-guides-1018 .wp-block-post-title { padding: 22px 22px 16px; }\n  body.page-id-1018 #post-1018 .entry-content #detail-guides-1018 .wp-block-post-excerpt { padding: 0 22px 22px; }\n}\n\n\/* These short ZGS model names do not need a reserved three-line heading. *\/\n@media (min-width: 960px) and (max-width: 1100px) {\n  body.page-id-1018 #post-1018 #subia-oil-template #series .sc-card h3 { min-height: 1.3em; }\n}\n<\/style>\n\n\n\n<style id=\"product-style-fidelity-1018\">\n\/* SEC2 1018: oil-reference heading, cards and interaction. *\/\nbody.page-id-1018 #post-1018 #subia-oil-template #series.sc-section {\n  padding-block: 64px 74px;\n}\nbody.page-id-1018 #post-1018 #subia-oil-template #series.sc-section .section-heading {\n  display: grid;\n  grid-template-columns: repeat(2, minmax(0, 1fr));\n  align-items: end;\n  gap: 60px;\n  margin-bottom: 40px;\n}\nbody.page-id-1018 #post-1018 #subia-oil-template #series.sc-section .section-heading h2 {\n  max-width: 18ch;\n  margin: 0;\n  padding-block-start: 22px;\n  color: #102f3a;\n  font-size: 34px;\n  font-weight: 700;\n  line-height: 1.12;\n  letter-spacing: -.035em;\n}\nbody.page-id-1018 #post-1018 #subia-oil-template #series.sc-section .section-heading > p {\n  max-width: 53ch;\n  margin: 0;\n  padding: 7px 0 0;\n  color: #344951;\n  font-size: 16px;\n  font-weight: 400;\n  line-height: 1.75;\n}\nbody.page-id-1018 #post-1018 #subia-oil-template #series.sc-section > .rail > .series-grid > .series-product {\n  border: 1px solid #d6e2e5;\n  border-radius: 8px;\n  background: #f3f7f8;\n  box-shadow: none;\n  transition: border-color .18s ease, box-shadow .18s ease;\n}\nbody.page-id-1018 #post-1018 #subia-oil-template #series.sc-section > .rail > .series-grid > .series-product:is(:hover, :focus-within) {\n  border-color: #8eb7bc;\n  background: #f3f7f8;\n  box-shadow: 0 8px 24px rgba(16, 47, 58, .07);\n}\nbody.page-id-1018 #post-1018 #subia-oil-template #series.sc-section > .rail > .series-grid > .series-product h3 {\n  max-width: none;\n  color: #102f3a;\n  font-size: 23px;\n  font-weight: 600;\n  line-height: 1.3;\n  text-wrap: balance;\n}\nbody.page-id-1018 #post-1018 #subia-oil-template #series.sc-section > .rail > .series-grid > .series-product .series-range {\n  color: #14757a;\n  font-size: 13px;\n  font-weight: 500;\n  line-height: 1.6;\n}\nbody.page-id-1018 #post-1018 #subia-oil-template #series.sc-section > .rail > .series-grid > .series-product :is(.sc-card-description > p, .series-copy > p:not(.series-range)),\nbody.page-id-1018 #post-1018 #subia-oil-template #series.sc-section > .rail > .series-grid > .series-product > p:not(.series-range, .rd-capacity) {\n  color: #344951;\n  font-size: 14px;\n  line-height: 1.7;\n}\nbody.page-id-1018 #post-1018 #subia-oil-template #series.sc-section > .rail > .series-grid > .series-product .sc-card-action > .text-link {\n  display: flex;\n  align-items: center;\n  justify-content: space-between;\n  gap: 16px;\n  width: 100%;\n  min-height: 46px;\n  padding: 11px 15px;\n  border: 1px solid #b8cfd3;\n  border-radius: 4px;\n  background: #fff;\n  color: #14757a;\n  font-size: 14px;\n  font-weight: 550;\n  line-height: 1.55;\n  text-align: start;\n  white-space: normal;\n}\nbody.page-id-1018 #post-1018 #subia-oil-template #series.sc-section > .rail > .series-grid > .series-product .sc-card-action > .text-link:hover {\n  border-color: #14757a;\n  background: #14757a;\n  color: #fff;\n}\nbody.page-id-1018 #post-1018 #subia-oil-template #series.sc-section > .rail > .series-grid > .series-product .sc-card-action > .text-link svg {\n  flex-shrink: 0;\n  transition: transform .2s ease;\n}\nbody.page-id-1018 #post-1018 #subia-oil-template #series.sc-section > .rail > .series-grid > .series-product .sc-card-action > .text-link:hover svg {\n  transform: translateX(4px);\n}\nbody.page-id-1018 #post-1018 #subia-oil-template #series.sc-section > .rail > .series-grid > .series-product :is(.product-photo, .text-link):focus-visible {\n  outline: 3px solid #f47216;\n  outline-offset: 4px;\n}\n\nbody.page-id-1018 #post-1018 #subia-oil-template #series.sc-section > .rail > .series-grid {\n  grid-template-columns: repeat(3, minmax(0, 1fr));\n  gap: 24px;\n}\nbody.page-id-1018 #post-1018 #subia-oil-template #series.sc-section > .rail > .series-grid > .series-product {\n  padding: 26px;\n}\n@media (min-width: 960px) and (max-width: 1100px) {\n  body.page-id-1018 #post-1018 #subia-oil-template #series.sc-section > .rail > .series-grid > .series-product { padding: 22px; }\n  body.page-id-1018 #post-1018 #subia-oil-template #series.sc-section > .rail > .series-grid > .series-product h3 { font-size: 21px; }\n}\n@media (min-width: 700px) and (max-width: 959px) {\n  body.page-id-1018 #post-1018 #subia-oil-template #series.sc-section > .rail > .series-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }\n  body.page-id-1018 #post-1018 #subia-oil-template #series.sc-section > .rail > .series-grid > .series-product h3 { font-size: 22px; }\n}\n@media (max-width: 699px) {\n  body.page-id-1018 #post-1018 #subia-oil-template #series.sc-section > .rail > .series-grid { grid-template-columns: minmax(0, 1fr); gap: 22px; }\n  body.page-id-1018 #post-1018 #subia-oil-template #series.sc-section > .rail > .series-grid > .series-product { padding: 22px; }\n  body.page-id-1018 #post-1018 #subia-oil-template #series.sc-section > .rail > .series-grid > .series-product h3 { min-height: 0; }\n}\n\nbody.page-id-1018 #post-1018 #subia-oil-template #series.sc-section > .rail > .series-grid > .series-product > :is(.ex-series-code, .rd-capacity) {\n  font-variant-numeric: lining-nums tabular-nums;\n}\nbody.page-id-1018 #post-1018 #subia-oil-template #series.sc-section > .rail > .series-grid > .series-product > .sc-card-media > .sc-art {\n  inset-block: 28px 0;\n  inset-inline: 0;\n  width: auto;\n  height: auto;\n}\n@media (min-width: 601px) and (max-width: 900px) {\n  body.page-id-1018 #post-1018 #subia-oil-template #series.sc-section > .rail > .series-grid > .series-product > .sc-card-media { height: 190px; }\n}\n@media (max-width: 600px) {\n  body.page-id-1018 #post-1018 #subia-oil-template #series.sc-section > .rail > .series-grid > .series-product > .sc-card-media > .sc-art { inset-block-start: 24px; inset-inline: 10px; }\n}\n\n@media (min-width: 601px) and (max-width: 900px) {\n  body.page-id-1018 #post-1018 #subia-oil-template #series.sc-section .section-heading { gap: 35px; }\n  body.page-id-1018 #post-1018 #subia-oil-template #series.sc-section .section-heading h2 { font-size: 32px; }\n}\n@media (min-width: 601px) and (max-width: 699px) {\n  body.page-id-1018 #post-1018 #subia-oil-template #series.sc-section .section-heading > p { padding-top: 0; line-height: 1.8; }\n}\n@media (max-width: 600px) {\n  body.page-id-1018 #post-1018 #subia-oil-template #series.sc-section { padding-block: 44px 52px; }\n  body.page-id-1018 #post-1018 #subia-oil-template #series.sc-section .section-heading { display: block; margin-bottom: 32px; }\n  body.page-id-1018 #post-1018 #subia-oil-template #series.sc-section .section-heading h2 { margin-bottom: 20px; font-size: 30px; }\n  body.page-id-1018 #post-1018 #subia-oil-template #series.sc-section .section-heading > p { padding-top: 0; font-size: 15px; line-height: 1.8; }\n}\n@media (prefers-reduced-motion: reduce) {\n  body.page-id-1018 #post-1018 #subia-oil-template #series.sc-section > .rail > .series-grid > .series-product,\n  body.page-id-1018 #post-1018 #subia-oil-template #series.sc-section > .rail > .series-grid > .series-product .sc-card-action > .text-link svg {\n    transition: none;\n  }\n}\n\n\/* Electrical comparison heading. *\/\nbody.page-id-1018 #post-1018 #subia-oil-template #electrical-range > .rail > .balanced-heading {\n  font-size: clamp(32px, 3.1vw, 44px);\n  font-weight: 600;\n  line-height: 1.12;\n  margin-block-end: 16px;\n}\n@media (max-width: 600px) {\n  body.page-id-1018 #post-1018 #subia-oil-template #electrical-range > .rail > .balanced-heading { font-size: 30px; }\n}\n\nbody.page-id-1018 #post-1018 #subia-oil-template #electrical-range .model-code > summary {\n  align-items: center;\n  column-gap: 14px;\n  padding-inline-end: 12px;\n  overflow-wrap: anywhere;\n}\nbody.page-id-1018 #post-1018 #subia-oil-template #electrical-range .model-code > summary > span {\n  display: grid;\n  place-items: center;\n  flex: 0 0 24px;\n  block-size: 24px;\n  line-height: 1;\n}\n\n\/* Construction heading and image\/text rails. *\/\nbody.page-id-1018 #post-1018 #subia-oil-template #construction .construction-title { font-size: clamp(34px, 3.1vw, 44px); font-weight: 600; }\n@media (min-width: 901px) and (max-width: 1100px) {\n  body.page-id-1018 #post-1018 #subia-oil-template #construction .construction-editorial {\n    grid-template-columns: minmax(0, 46fr) minmax(0, 54fr);\n    gap: 24px 32px;\n  }\n}\n@media (max-width: 900px) {\n  body.page-id-1018 #post-1018 #subia-oil-template #construction .construction-title { font-size: 40px; }\n}\n@media (max-width: 600px) {\n  body.page-id-1018 #post-1018 #subia-oil-template #construction .construction-title { font-size: 32px; }\n  body.page-id-1018 #post-1018 #subia-oil-template #construction .construction-editorial { gap: 25px; }\n}\n@media (max-width: 360px) {\n  body.page-id-1018 #post-1018 #subia-oil-template #construction .construction-title { font-size: 29px; }\n}\n\n\/* Technical model triggers use the reference's rating CTA treatment. *\/\nbody.page-id-1018 #post-1018 #subia-oil-template #pad-engineering .action-row > .text-link[data-open-product] {\n  display: inline-flex;\n  align-items: center;\n  justify-content: center;\n  gap: 14px;\n  min-height: 46px;\n  max-width: 100%;\n  padding: 12px 18px;\n  border: 0;\n  border-radius: 0;\n  box-shadow: none;\n  background: #14757a;\n  color: #fff;\n  font-size: 14px;\n  line-height: 1.4;\n  text-align: center;\n  text-decoration: none;\n  white-space: normal;\n}\nbody.page-id-1018 #post-1018 #subia-oil-template #pad-engineering .action-row > .text-link[data-open-product]:hover { background: #105c62; }\nbody.page-id-1018 #post-1018 #subia-oil-template #pad-engineering .action-row > .text-link[data-open-product] svg { width: 18px; height: 18px; stroke-width: 1.5; }\n@media (max-width: 600px) {\n  body.page-id-1018 #post-1018 #subia-oil-template #pad-engineering .action-row > .text-link[data-open-product] { width: 100%; }\n}\n\n\/* Application heading and responsive spacing. *\/\nbody.page-id-1018 #post-1018 #subia-oil-template #applications .section-heading > h2 {\n  font-size: clamp(34px, 3.3vw, 48px);\n  font-weight: 600;\n  line-height: 1.08;\n}\n@media (min-width: 768px) and (max-width: 991px) {\n  body.page-id-1018 #post-1018 #subia-oil-template #applications { padding-block: 72px; }\n}\n@media (max-width: 767px) {\n  body.page-id-1018 #post-1018 #subia-oil-template #applications .section-heading > h2 { font-size: 32px; }\n}\n@media (max-width: 359px) {\n  body.page-id-1018 #post-1018 #subia-oil-template #applications .section-heading > h2 { font-size: 29px; }\n}\n\/* Give the tablet selector the same rail as the photo without cropping either. *\/\n@media (min-width: 768px) and (max-width: 991px) {\n  body.page-id-1018 #post-1018 #subia-oil-template #applications .app-explorer.is-interactive { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }\n  body.page-id-1018 #post-1018 #subia-oil-template #applications .app-explorer.is-interactive .app-panel-image { align-self: start; min-height: 0; }\n  body.page-id-1018 #post-1018 #subia-oil-template #applications .app-explorer.is-interactive .app-panel-image img { display: block; width: 100%; height: auto; min-height: 0; }\n  body.page-id-1018 #post-1018 #subia-oil-template #applications .app-tab {\n    grid-template-columns: 58px minmax(0, 1fr);\n    gap: 12px;\n    min-height: 92px;\n    padding: 20px 12px;\n    font-size: 15px;\n  }\n  body.page-id-1018 #post-1018 #subia-oil-template #applications .app-tab img { width: 58px; }\n  body.page-id-1018 #post-1018 #subia-oil-template #applications .app-tab > svg { display: none; }\n  body.page-id-1018 #post-1018 #subia-oil-template #applications .app-panel-copy h3 { font-size: 24px; }\n}\n\n\/* Match the FAQ and guide headings; leave accordion and media styling intact. *\/\nbody.page-id-1018 #post-1018 #subia-oil-template #site-conditions .rd-faq-intro > h2 { font-weight: 600; max-width: 13ch; }\nbody.page-id-1018 #post-1018 #detail-guides-1018 .pd-guides-heading > h2 { font-weight: 600; max-width: 15ch; }\n@media (max-width: 699px) {\n  body.page-id-1018 #post-1018 #subia-oil-template #site-conditions .rd-faq-intro > h2 { max-width: 15ch; }\n  body.page-id-1018 #post-1018 #detail-guides-1018 .pd-guides-heading > h2 { margin-block-end: 18px; }\n}\n<\/style>\n\n\n\n<style id=\"product-dark-divider-1018\">\n@media screen {\n\/* Technical divider. Dark overview, pale specification surfaces and visible tab states. *\/\n@media screen {\n  body.page-id-1018 #post-1018 #subia-oil-template #pad-network {\n    background-color: #102f3a;\n    color: #dce9ea;\n  }\n\n  body.page-id-1018 #post-1018 #subia-oil-template #pad-network > .rail > .rd-group-title {\n    color: #fff;\n    font-size: 40px;\n    font-weight: 600;\n    letter-spacing: -.035em;\n    line-height: 1.14;\n    text-wrap: balance;\n  }\n\n  body.page-id-1018 #post-1018 #subia-oil-template #pad-network .rd-topic-tab {\n    background-color: #1c414a;\n    box-shadow: inset 0 0 0 1px #71969e;\n    color: #dce9ea;\n  }\n\n  body.page-id-1018 #post-1018 #subia-oil-template #pad-network .rd-topic-tab:not([aria-selected=\"true\"]):hover {\n    background-color: #285462;\n    color: #fff;\n  }\n\n  body.page-id-1018 #post-1018 #subia-oil-template #pad-network .rd-topic-tab[aria-selected=\"true\"] {\n    background-color: #edf3f2;\n    box-shadow: inset 0 -3px #176779;\n    color: #102f3a;\n  }\n\n  body.page-id-1018 #post-1018 #subia-oil-template #pad-network .rd-topic-tab:focus-visible {\n    position: relative;\n    z-index: 1;\n    outline: 2px solid #f47216;\n    outline-offset: 2px;\n  }\n\n  body.page-id-1018 #post-1018 #subia-oil-template #pad-network .rd-topic-panel {\n    background-color: #1c414a;\n    color: #dce9ea;\n  }\n\n  body.page-id-1018 #post-1018 #subia-oil-template #pad-network .rd-topic-panel > .rail > :is(.balanced-heading, .engineering-panel-title, .pd-panel-heading),\n  body.page-id-1018 #post-1018 #subia-oil-template #pad-network .rd-topic-panel .split-section > div > :is(h2, .pd-panel-heading),\n  body.page-id-1018 #post-1018 #subia-oil-template #pad-network .rd-topic-panel :is(.balanced-copy, .split-section, .engineering-story) :is(h2, h3) {\n    color: #fff;\n  }\n\n  body.page-id-1018 #post-1018 #subia-oil-template #pad-network .rd-topic-panel > .rail > :is(.balanced-heading, .engineering-panel-title, .pd-panel-heading),\n  body.page-id-1018 #post-1018 #subia-oil-template #pad-network .rd-topic-panel .split-section > div > :is(h2, .pd-panel-heading) {\n    border-inline-start: 2px solid #91d7cb;\n    padding-inline-start: 12px;\n  }\n\n  body.page-id-1018 #post-1018 #subia-oil-template #pad-network .rd-topic-panel :is(.balanced-copy, .split-section, .engineering-story, .table-notes) p {\n    color: #dce9ea;\n  }\n\n  body.page-id-1018 #post-1018 #subia-oil-template #pad-network .rd-topic-panel :is(.equipment-figure, .table-wrap) {\n    background-color: #fff;\n    color: #103744;\n  }\n\n  body.page-id-1018 #post-1018 #subia-oil-template #pad-network .rd-topic-panel .table-wrap table caption {\n    background-color: #edf3f2;\n    color: #375662;\n    padding: 12px 18px;\n    text-align: start;\n  }\n\n  body.page-id-1018 #post-1018 #subia-oil-template #pad-network .rd-topic-panel .content-list {\n    background-color: #edf3f2;\n    color: #435f68;\n  }\n\n  body.page-id-1018 #post-1018 #subia-oil-template #pad-network .rd-topic-panel .content-list li {\n    color: inherit;\n  }\n\n  body.page-id-1018 #post-1018 #subia-oil-template #pad-network ::selection {\n    background-color: #91d7cb;\n    color: #102f3a;\n  }\n}\n\n@media screen and (max-width: 1200px) {\n  body.page-id-1018 #post-1018 #subia-oil-template #pad-network > .rail > .rd-group-title { font-size: 36px; }\n}\n\n@media screen and (max-width: 700px) {\n  body.page-id-1018 #post-1018 #subia-oil-template #pad-network > .rail > .rd-group-title { font-size: 33px; }\n}\n}\n<\/style>\n<style id=\"product-sec2-split-1018\">\n\/* Product SEC2 split surface, scoped to one verified page and section. *\/\nbody.page-id-1018 #post-1018 #subia-oil-template #series > .rail > .series-grid {\n  display: grid;\n  grid-template-columns: repeat(3, minmax(0, 1fr));\n  gap: 24px;\n}\n\nbody.page-id-1018 #post-1018 #subia-oil-template #series > .rail > .series-grid > .series-product:nth-child(n) {\n  --split-inset: 26px;\n  display: flex;\n  flex-direction: column;\n  min-width: 0;\n  grid-row: auto;\n  grid-template: none;\n  gap: 0;\n  padding: var(--split-inset) var(--split-inset) 0;\n  border: 1px solid #d6e2e5;\n  border-radius: 0;\n  background: #fff;\n  box-shadow: none;\n  transition: border-color .18s ease, box-shadow .18s ease;\n}\n\nbody.page-id-1018 #post-1018 #subia-oil-template #series > .rail > .series-grid > .series-product:nth-child(n):is(:hover, :focus-within) {\n  border-color: #8eb7bc;\n  background: #fff;\n  box-shadow: 0 8px 24px rgba(16, 47, 58, .07);\n}\n\nbody.page-id-1018 #post-1018 #subia-oil-template #series > .rail > .series-grid > .series-product:nth-child(n) > .product-photo {\n  flex: 0 0 auto;\n  align-self: stretch;\n  width: 100%;\n  margin: 0 0 16px;\n  border: 0;\n  border-radius: 0;\n  background: #fff;\n}\n\nbody.page-id-1018 #post-1018 #subia-oil-template #series > .rail > .series-grid > .series-product:nth-child(n) > :is(.split-card-copy, .rd-series-copy, .series-copy) {\n  display: flex;\n  flex: 1;\n  flex-direction: column;\n  min-width: 0;\n  max-width: none;\n  margin: 0 calc(-1 * var(--split-inset));\n  padding: 24px var(--split-inset) 16px;\n  border-block-start: 1px solid #d6e2e5;\n  background: #f3f7f8;\n}\n\nbody.page-id-1018 #post-1018 #subia-oil-template #series > .rail > .series-grid > .series-product:nth-child(n) > :is(.split-card-copy, .rd-series-copy, .series-copy) > :is(.sc-card-heading, .sc-card-meta, .sc-card-description, .sc-card-action) {\n  display: block;\n  min-width: 0;\n  max-width: none;\n  margin: 0;\n  padding: 0;\n}\n\nbody.page-id-1018 #post-1018 #subia-oil-template #series > .rail > .series-grid > .series-product:nth-child(n) > :is(.split-card-copy, .rd-series-copy, .series-copy) h3 {\n  max-inline-size: 22ch;\n  min-block-size: 2.7em;\n  margin: 0 0 12px;\n  padding: 0;\n  color: #102f3a;\n  font-size: 24px;\n  font-weight: 600;\n  line-height: 1.35;\n  overflow-wrap: anywhere;\n  text-wrap: pretty;\n}\n\nbody.page-id-1018 #post-1018 #subia-oil-template #series > .rail > .series-grid > .series-product:nth-child(n) > :is(.split-card-copy, .rd-series-copy, .series-copy) .series-range {\n  margin: 0 0 20px;\n  padding: 0;\n  color: #14757a;\n  font-size: 13px;\n  font-weight: 500;\n  line-height: 1.6;\n  overflow-wrap: anywhere;\n}\n\nbody.page-id-1018 #post-1018 #subia-oil-template #series > .rail > .series-grid > .series-product:nth-child(n) > :is(.split-card-copy, .rd-series-copy, .series-copy) :is(.sc-card-description > p, p:not([class])) {\n  margin: 0 0 20px;\n  padding: 0;\n  color: #344951;\n  font-size: 14px;\n  line-height: 1.7;\n  overflow-wrap: anywhere;\n}\n\nbody.page-id-1018 #post-1018 #subia-oil-template #series > .rail > .series-grid > .series-product:nth-child(n) > :is(.split-card-copy, .rd-series-copy, .series-copy) > .sc-card-action {\n  margin-block-start: auto;\n}\n\nbody.page-id-1018 #post-1018 #subia-oil-template #series > .rail > .series-grid > .series-product:nth-child(n) > :is(.split-card-copy, .rd-series-copy, .series-copy) .text-link {\n  display: inline-flex;\n  align-self: flex-start;\n  align-items: center;\n  justify-content: space-between;\n  gap: 24px;\n  width: auto;\n  max-width: 100%;\n  min-height: 44px;\n  margin: auto 0 0;\n  padding: 8px 0;\n  border: 0;\n  border-block-end: 1px solid currentColor;\n  border-radius: 0;\n  box-shadow: none;\n  background: transparent;\n  color: #14757a;\n  font-size: 14px;\n  font-weight: 550;\n  line-height: 1.55;\n  text-align: start;\n  overflow-wrap: anywhere;\n  white-space: normal;\n}\n\nbody.page-id-1018 #post-1018 #subia-oil-template #series > .rail > .series-grid > .series-product:nth-child(n) > :is(.split-card-copy, .rd-series-copy, .series-copy) .text-link:hover {\n  background: transparent;\n  color: #102f3a;\n}\n\nbody.page-id-1018 #post-1018 #subia-oil-template #series > .rail > .series-grid > .series-product:nth-child(n) > :is(.split-card-copy, .rd-series-copy, .series-copy) .text-link svg {\n  flex: 0 0 auto;\n  transition: transform .2s ease;\n}\n\nbody.page-id-1018 #post-1018 #subia-oil-template #series > .rail > .series-grid > .series-product:nth-child(n) > :is(.split-card-copy, .rd-series-copy, .series-copy) .text-link:hover svg {\n  transform: translateX(4px);\n}\n\nbody.page-id-1018 #post-1018 #subia-oil-template #series > .rail > .series-grid > .series-product:nth-child(n) > :is(.split-card-copy, .rd-series-copy, .series-copy) .text-link:dir(rtl) svg {\n  transform: scaleX(-1);\n}\n\nbody.page-id-1018 #post-1018 #subia-oil-template #series > .rail > .series-grid > .series-product:nth-child(n) > :is(.split-card-copy, .rd-series-copy, .series-copy) .text-link:dir(rtl):hover svg {\n  transform: translateX(-4px) scaleX(-1);\n}\n\nbody.page-id-1018 #post-1018 #subia-oil-template #series > .rail > .series-grid > .series-product:nth-child(n) > :is(.split-card-copy, .rd-series-copy, .series-copy) .text-link:focus-visible,\nbody.page-id-1018 #post-1018 #subia-oil-template #series > .rail > .series-grid > .series-product:nth-child(n) > .product-photo:focus-visible {\n  outline: 3px solid #f47216;\n  outline-offset: 4px;\n}\n\nbody.page-id-1018 #post-1018 #subia-oil-template #series > .rail > .series-grid > .series-product:nth-child(n) > .product-photo:focus-visible {\n  outline-offset: -4px;\n}\n\n@media (min-width: 960px) and (max-width: 1100px) {\n  body.page-id-1018 #post-1018 #subia-oil-template #series > .rail > .series-grid > .series-product:nth-child(n) { --split-inset: 22px; }\n  body.page-id-1018 #post-1018 #subia-oil-template #series > .rail > .series-grid > .series-product:nth-child(n) > :is(.split-card-copy, .rd-series-copy, .series-copy) h3 { font-size: 21px; min-block-size: 4.05em; }\n}\n\n@media (max-width: 959px) {\n  body.page-id-1018 #post-1018 #subia-oil-template #series > .rail > .series-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }\n  body.page-id-1018 #post-1018 #subia-oil-template #series > .rail > .series-grid > .series-product:nth-child(n) > :is(.split-card-copy, .rd-series-copy, .series-copy) h3 { font-size: 22px; }\n}\n\n@media (max-width: 699px) {\n  body.page-id-1018 #post-1018 #subia-oil-template #series > .rail > .series-grid { grid-template-columns: minmax(0, 1fr); gap: 22px; }\n  body.page-id-1018 #post-1018 #subia-oil-template #series > .rail > .series-grid > .series-product:nth-child(n) { --split-inset: 22px; }\n  body.page-id-1018 #post-1018 #subia-oil-template #series > .rail > .series-grid > .series-product:nth-child(n) > :is(.split-card-copy, .rd-series-copy, .series-copy) h3 { font-size: 23px; min-block-size: 0; }\n}\n\n@media (prefers-reduced-motion: reduce) {\n  body.page-id-1018 #post-1018 #subia-oil-template #series > .rail > .series-grid > .series-product:nth-child(n),\n  body.page-id-1018 #post-1018 #subia-oil-template #series > .rail > .series-grid > .series-product:nth-child(n) > :is(.split-card-copy, .rd-series-copy, .series-copy) .text-link svg { transition: none; }\n}\n<\/style>\n\n","protected":false},"excerpt":{"rendered":"<p>Pad-mountedTransformers Compact outdoor distribution with enclosed cable connections. Transformer manufacturing workshop SeriesElectrical rangeTechnical dataConstructionApplicationsDocuments ZGS pad-mountedtransformers 150, 500 and 1,000 kVA configurations for three-phase distribution. Series photographs illustrate enclosure designs; each technical panel identifies the electrical configuration. 150kVA ZGS 150 kVA Three-phase \u00b7 150 kVA 150 kVA ZGS enclosure views and a separate 13.8 kV [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1168,"parent":762,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1018","page","type-page","status-publish","has-post-thumbnail","hentry"],"blocksy_meta":{"has_hero_section":"disabled","vertical_spacing_source":"custom","content_area_spacing":"none","disable_featured_image":"yes","styles_descriptor":{"styles":{"desktop":"","tablet":"","mobile":""},"google_fonts":[],"version":7}},"_links":{"self":[{"href":"https:\/\/subiapower.com\/ru\/wp-json\/wp\/v2\/pages\/1018","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/subiapower.com\/ru\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/subiapower.com\/ru\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/subiapower.com\/ru\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/subiapower.com\/ru\/wp-json\/wp\/v2\/comments?post=1018"}],"version-history":[{"count":13,"href":"https:\/\/subiapower.com\/ru\/wp-json\/wp\/v2\/pages\/1018\/revisions"}],"predecessor-version":[{"id":2266,"href":"https:\/\/subiapower.com\/ru\/wp-json\/wp\/v2\/pages\/1018\/revisions\/2266"}],"up":[{"embeddable":true,"href":"https:\/\/subiapower.com\/ru\/wp-json\/wp\/v2\/pages\/762"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/subiapower.com\/ru\/wp-json\/wp\/v2\/media\/1168"}],"wp:attachment":[{"href":"https:\/\/subiapower.com\/ru\/wp-json\/wp\/v2\/media?parent=1018"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}