{"id":11414,"date":"2026-09-02T23:16:00","date_gmt":"2026-09-02T15:16:00","guid":{"rendered":"https:\/\/subian-electric.com\/?page_id=11414"},"modified":"2026-09-02T23:16:18","modified_gmt":"2026-09-02T15:16:18","slug":"150-kva-step-down-transformer","status":"publish","type":"page","link":"https:\/\/subian-electric.com\/de\/150-kva-step-down-transformer\/","title":{"rendered":"China Gro\u00dfhandel 150 Kva Abw\u00e4rtstransformator"},"content":{"rendered":"<section class=\"web-sem-module web-sem-module-one\" style=\"min-width: 100%;\">\n<div class=\"web-sem-container\">\n<div class=\"web-sem-flex-box\">\n<div class=\"web-sem-text\"><span class=\"web-sem-tag\">COMPANY PROFILE<\/span><\/p>\n<h1>150 kVA Step Down Transformer Manufacturers &amp; Suppliers &#8211; Custom Ratio Factory<\/h1>\n<p>Subian Electric builds step-down transformers at our 50,000-square-metre factory in Xuzhou, China. A 150 kVA step down transformer from this factory is made for two common duties: stepping a medium-voltage line &#8211; for example 11kV &#8211; down to 400V\/230V, or stepping a 480V commercial supply down to 208Y\/120V.<br \/>\nBecause we manufacture the coils ourselves, the ratio, impedance and tappings can be set to your site rather than chosen from a catalogue. Every unit is routine-tested and delivered with its test report, under ISO9001 and CE controlled production.<br \/>\nSend us the incoming voltage, the voltage you need and the connected load. We will specify the unit, confirm it on drawings and quote factory pricing with lead time.<\/p>\n<div style=\"margin-top: 24px;\"><img decoding=\"async\" style=\"max-width: 100%; height: auto; border-radius: 8px; box-shadow: 0 4px 20px rgba(0,0,0,0.08);\" src=\"\/wp-content\/uploads\/2026\/08\/subian-product-certification-marks.png\" alt=\"Subian Electric ISO9001 CE and UL product certification marks\" \/><\/div>\n<div class=\"hy-lb-btn-wrap\" style=\"margin-top: 20px;\"><a class=\"hy-lb-btn\" href=\"\/contact-us\/\">Get a Quote<\/a><\/div>\n<\/div>\n<div class=\"web-sem-media\">\n<div class=\"web-sem-main-img web-sem-rect-75\"><img decoding=\"async\" class=\"web-sem-full\" src=\"\/wp-content\/uploads\/2026\/08\/subian-electric-transformer-assembly-process.webp\" alt=\"150 kVA step-down transformer production at Subian\" \/><\/div>\n<div class=\"web-sem-float-card\"><strong>Factory-Direct Manufacturer<\/strong><br \/>\nSince 2019 \u00b7 50,000m\u00b2 \u00b7 350+ Staff<\/div>\n<\/div>\n<\/div>\n<div class=\"web-sem-stats-grid\">\n<div class=\"web-sem-stat-item\"><strong>50,000m\u00b2<\/strong>Manufacturing Base<\/div>\n<div class=\"web-sem-stat-item\"><strong>Up to 110kV<\/strong>Type-Tested Capability<\/div>\n<div class=\"web-sem-stat-item\"><strong>350+<\/strong>Employees<\/div>\n<div class=\"web-sem-stat-item\"><strong>50+<\/strong>Countries Served<\/div>\n<div class=\"web-sem-stat-item\"><strong>OEM\/ODM<\/strong>Support<\/div>\n<div class=\"web-sem-stat-item\"><strong>Wholesale<\/strong>Supply<\/div>\n<\/div>\n<\/div>\n<\/section>\n<section class=\"singlepage-products-section\" style=\"min-width: 100%;\">\n<div class=\"singlepage-container\">\n<h2 class=\"singlepage-section-title\">Step-Down Transformers We Manufacture<\/h2>\n<p class=\"singlepage-section-desc\">Oil-immersed and dry-type step-down transformers from 30 kVA to several thousand kVA, covering MV-to-LV distribution duty and commercial LV step-down such as 480V to 208Y\/120V.<\/p>\n<div class=\"woocommerce columns-4 \"><ul class=\"products columns-4\" data-products=\"type-3\" data-hover=\"zoom-in\">\n<li class=\"product type-product post-2007 status-publish first instock product_cat-dry-type-transformer product_cat-all-product product_cat-transformer product_tag-amorphous-alloy-transformer product_tag-dry-type-transformer product_tag-scbh-series has-post-thumbnail shipping-taxable product-type-simple\">\n\t<a href=\"https:\/\/subian-electric.com\/de\/product\/10kv-dry-type-transformer-scbh-series\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/f3d771df622f51ee2386b290a0e687e.png\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"10kV  Dry-Type Transformer-SCBH series Amorphous Alloy\" \/><h2 class=\"woocommerce-loop-product__title\">10kV  Dry-Type Transformer-SCBH series Amorphous Alloy<\/h2>\n<\/a><a href=\"https:\/\/subian-electric.com\/de\/product\/10kv-dry-type-transformer-scbh-series\/\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_2007\" data-quantity=\"1\" class=\"button product_type_simple\" data-product_id=\"2007\" data-product_sku=\"\" aria-label=\"Lese mehr \u00fcber &#8222;10kV  Dry-Type Transformer-SCBH series Amorphous Alloy&#8220;\" rel=\"nofollow\" data-success_message=\"\">Weiterlesen<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_2007\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n<\/li>\n<li class=\"product type-product post-1966 status-publish instock product_cat-dry-type-transformer product_cat-all-product product_cat-transformer product_tag-20-35kv-transformer product_tag-cast-resin-transformer product_tag-dry-type-transformer has-post-thumbnail shipping-taxable product-type-simple\">\n\t<a href=\"https:\/\/subian-electric.com\/de\/product\/20-35kv-dry-type-transformer\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/1-1.jpg\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"20-35KV  Dry-Type Transformer\" \/><h2 class=\"woocommerce-loop-product__title\">20-35KV  Dry-Type Transformer<\/h2>\n<\/a><a href=\"https:\/\/subian-electric.com\/de\/product\/20-35kv-dry-type-transformer\/\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1966\" data-quantity=\"1\" class=\"button product_type_simple\" data-product_id=\"1966\" data-product_sku=\"\" aria-label=\"Lese mehr \u00fcber &#8222;20-35KV  Dry-Type Transformer&#8220;\" rel=\"nofollow\" data-success_message=\"\">Weiterlesen<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1966\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n<\/li>\n<li class=\"product type-product post-1999 status-publish instock product_cat-dry-type-transformer product_cat-all-product product_cat-transformer product_tag-cast-resin-transformer product_tag-dry-type-transformer product_tag-scb-series has-post-thumbnail shipping-taxable product-type-simple\">\n\t<a href=\"https:\/\/subian-electric.com\/de\/product\/20-35kv-scb-series-epoxy-resin-dry-type-transformer\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/1-1.jpg\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"20-35KV SCB Series Epoxy Resin Dry-Type Transformer\" \/><h2 class=\"woocommerce-loop-product__title\">20-35KV SCB Series Epoxy Resin Dry-Type Transformer<\/h2>\n<\/a><a href=\"https:\/\/subian-electric.com\/de\/product\/20-35kv-scb-series-epoxy-resin-dry-type-transformer\/\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1999\" data-quantity=\"1\" class=\"button product_type_simple\" data-product_id=\"1999\" data-product_sku=\"\" aria-label=\"Lese mehr \u00fcber &#8222;20-35KV SCB Series Epoxy Resin Dry-Type Transformer&#8220;\" rel=\"nofollow\" data-success_message=\"\">Weiterlesen<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1999\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n<\/li>\n<li class=\"product type-product post-2005 status-publish last instock product_cat-oil-immersed-transformer product_cat-all-product product_cat-transformer product_tag-20kv-transformer product_tag-distribution-transformer product_tag-oil-immersed-distribution-transformer has-post-thumbnail shipping-taxable product-type-simple\">\n\t<a href=\"https:\/\/subian-electric.com\/de\/product\/20kv-oil-immersed-distribution-transformer\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/20kv-high-voltage-oil-immersed-distribution-transformer-3.jpg\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"20KV Oil-immersed Distribution Transformer\" \/><h2 class=\"woocommerce-loop-product__title\">20KV Oil-immersed Distribution Transformer<\/h2>\n<\/a><a href=\"https:\/\/subian-electric.com\/de\/product\/20kv-oil-immersed-distribution-transformer\/\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_2005\" data-quantity=\"1\" class=\"button product_type_simple\" data-product_id=\"2005\" data-product_sku=\"\" aria-label=\"Lese mehr \u00fcber &#8222;20KV Oil-immersed Distribution Transformer&#8220;\" rel=\"nofollow\" data-success_message=\"\">Weiterlesen<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_2005\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n<\/li>\n<li class=\"product type-product post-2001 status-publish first instock product_cat-oil-immersed-transformer product_cat-all-product product_cat-transformer product_tag-35kv-transformer product_tag-oil-immersed-power-transformer product_tag-power-transformer has-post-thumbnail shipping-taxable product-type-simple\">\n\t<a href=\"https:\/\/subian-electric.com\/de\/product\/35kv-oil-immersed-power-transformer\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/35kvoil-immersed-power-transformer-1.jpg\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"35KV Oil-immersed Power Transformer\" \/><h2 class=\"woocommerce-loop-product__title\">35KV Oil-immersed Power Transformer<\/h2>\n<\/a><a href=\"https:\/\/subian-electric.com\/de\/product\/35kv-oil-immersed-power-transformer\/\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_2001\" data-quantity=\"1\" class=\"button product_type_simple\" data-product_id=\"2001\" data-product_sku=\"\" aria-label=\"Lese mehr \u00fcber &#8222;35KV Oil-immersed Power Transformer&#8220;\" rel=\"nofollow\" data-success_message=\"\">Weiterlesen<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_2001\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n<\/li>\n<li class=\"product type-product post-1998 status-publish instock product_cat-oil-immersed-transformer product_cat-all-product product_cat-transformer product_tag-6-10kv-transformer product_tag-distribution-transformer product_tag-oil-immersed-distribution-transformer has-post-thumbnail shipping-taxable product-type-simple\">\n\t<a href=\"https:\/\/subian-electric.com\/de\/product\/6-10kv-oil-immersed-power-distribution-transformer\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/kp0a4190.png\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"6-10KV Oil-Immersed Power Distribution Transformer\" \/><h2 class=\"woocommerce-loop-product__title\">6-10KV Oil-Immersed Power Distribution Transformer<\/h2>\n<\/a><a href=\"https:\/\/subian-electric.com\/de\/product\/6-10kv-oil-immersed-power-distribution-transformer\/\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1998\" data-quantity=\"1\" class=\"button product_type_simple\" data-product_id=\"1998\" data-product_sku=\"\" aria-label=\"Lese mehr \u00fcber &#8222;6-10KV Oil-Immersed Power Distribution Transformer&#8220;\" rel=\"nofollow\" data-success_message=\"\">Weiterlesen<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1998\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n<\/li>\n<li class=\"product type-product post-1932 status-publish instock product_cat-new-energy-box-change product_cat-all-product product_tag-current-transformer product_tag-epoxy-resin-ct product_tag-indoor-current-transformer has-post-thumbnail shipping-taxable product-type-simple\">\n\t<a href=\"https:\/\/subian-electric.com\/de\/product\/current-transformer-10kv-indoor-high-voltage\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/h4f0a38a16f8d431cabf296113e8a958291-300x300-1.jpg\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Current Transformer --10KV Indoor High Voltage\" \/><h2 class=\"woocommerce-loop-product__title\">Current Transformer &#8211;10KV Indoor High Voltage<\/h2>\n<\/a><a href=\"https:\/\/subian-electric.com\/de\/product\/current-transformer-10kv-indoor-high-voltage\/\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1932\" data-quantity=\"1\" class=\"button product_type_simple\" data-product_id=\"1932\" data-product_sku=\"\" aria-label=\"Lese mehr \u00fcber &#8222;Current Transformer --10KV Indoor High Voltage&#8220;\" rel=\"nofollow\" data-success_message=\"\">Weiterlesen<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1932\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n<\/li>\n<li class=\"product type-product post-1926 status-publish last instock product_cat-new-energy-box-change product_cat-all-product product_tag-current-transformer product_tag-instrument-transformer product_tag-wound-current-transformer has-post-thumbnail shipping-taxable product-type-simple\">\n\t<a href=\"https:\/\/subian-electric.com\/de\/product\/current-transformer-lmzk-wound-current-transformer300-5a\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/h94b3287a0c02400cb3896e070dd056b3o-300x300.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Current Transformer--LMZK Wound Current Transformer300\/5a\" \/><h2 class=\"woocommerce-loop-product__title\">Current Transformer&#8211;LMZK Wound Current Transformer300\/5a<\/h2>\n<\/a><a href=\"https:\/\/subian-electric.com\/de\/product\/current-transformer-lmzk-wound-current-transformer300-5a\/\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1926\" data-quantity=\"1\" class=\"button product_type_simple\" data-product_id=\"1926\" data-product_sku=\"\" aria-label=\"Lese mehr \u00fcber &#8222;Current Transformer--LMZK Wound Current Transformer300\/5a&#8220;\" rel=\"nofollow\" data-success_message=\"\">Weiterlesen<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1926\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n<\/li>\n<li class=\"product type-product post-1928 status-publish first instock product_cat-new-energy-box-change product_cat-oil-immersed-transformer product_cat-all-product product_cat-transformer product_tag-bar-type-ct product_tag-current-transformer product_tag-three-phase-current-transformer has-post-thumbnail shipping-taxable product-type-simple\">\n\t<a href=\"https:\/\/subian-electric.com\/de\/product\/current-transformer-lsy-10-transformer-integrated-ct\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/h2f56a44db3a6408d8a0975c84031b3bck11-300x300-1.png\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Current Transformer--LSY-10 transformer Integrated CT\" \/><h2 class=\"woocommerce-loop-product__title\">Current Transformer&#8211;LSY-10 transformer Integrated CT<\/h2>\n<\/a><a href=\"https:\/\/subian-electric.com\/de\/product\/current-transformer-lsy-10-transformer-integrated-ct\/\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1928\" data-quantity=\"1\" class=\"button product_type_simple\" data-product_id=\"1928\" data-product_sku=\"\" aria-label=\"Lese mehr \u00fcber &#8222;Current Transformer--LSY-10 transformer Integrated CT&#8220;\" rel=\"nofollow\" data-success_message=\"\">Weiterlesen<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1928\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n<\/li>\n<li class=\"product type-product post-1930 status-publish instock product_cat-new-energy-box-change product_cat-all-product product_tag-current-transformer product_tag-ground-fault-protection product_tag-zero-sequence-current-transformer has-post-thumbnail shipping-taxable product-type-simple\">\n\t<a href=\"https:\/\/subian-electric.com\/de\/product\/current-transformer-lxk-high-voltage-zero-sequence\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/h5dcc01e22724407bbb4d1219883fc468a1-300x300-1.png\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"current transformer--LXK high voltage zero sequence\" \/><h2 class=\"woocommerce-loop-product__title\">current transformer&#8211;LXK high voltage zero sequence<\/h2>\n<\/a><a href=\"https:\/\/subian-electric.com\/de\/product\/current-transformer-lxk-high-voltage-zero-sequence\/\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1930\" data-quantity=\"1\" class=\"button product_type_simple\" data-product_id=\"1930\" data-product_sku=\"\" aria-label=\"Lese mehr \u00fcber &#8222;current transformer--LXK high voltage zero sequence&#8220;\" rel=\"nofollow\" data-success_message=\"\">Weiterlesen<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1930\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n<\/li>\n<li class=\"product type-product post-2003 status-publish instock product_cat-dry-type-transformer product_cat-all-product product_cat-transformer product_tag-cast-resin-transformer product_tag-dry-type-transformer product_tag-scb-series has-post-thumbnail shipping-taxable product-type-simple\">\n\t<a href=\"https:\/\/subian-electric.com\/de\/product\/dry-type-distribution-transformer-6-10-kv-scb-series\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/dry-type-distribution-transformer-6-10-KV-SCB-series-epoxy-resin-cast-1-1-2.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"dry type distribution transformer-6-10 KV SCB series epoxy resin cast\" \/><h2 class=\"woocommerce-loop-product__title\">dry type distribution transformer-6-10 KV SCB series epoxy resin cast<\/h2>\n<\/a><a href=\"https:\/\/subian-electric.com\/de\/product\/dry-type-distribution-transformer-6-10-kv-scb-series\/\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_2003\" data-quantity=\"1\" class=\"button product_type_simple\" data-product_id=\"2003\" data-product_sku=\"\" aria-label=\"Lese mehr \u00fcber &#8222;dry type distribution transformer-6-10 KV SCB series epoxy resin cast&#8220;\" rel=\"nofollow\" data-success_message=\"\">Weiterlesen<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_2003\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n<\/li>\n<li class=\"product type-product post-1934 status-publish last instock product_cat-new-energy-box-change product_cat-all-product product_tag-instrument-transformer product_tag-potential-transformer product_tag-voltage-transformer has-post-thumbnail shipping-taxable product-type-simple\">\n\t<a href=\"https:\/\/subian-electric.com\/de\/product\/electrical-transformers-jdz-10-power-voltage\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/h62d1d2268850460b947a0f5239537f12m.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Electrical Transformers--JDZ - 10  Power Voltage\" \/><h2 class=\"woocommerce-loop-product__title\">Electrical Transformers&#8211;JDZ &#8211; 10  Power Voltage<\/h2>\n<\/a><a href=\"https:\/\/subian-electric.com\/de\/product\/electrical-transformers-jdz-10-power-voltage\/\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1934\" data-quantity=\"1\" class=\"button product_type_simple\" data-product_id=\"1934\" data-product_sku=\"\" aria-label=\"Lese mehr \u00fcber &#8222;Electrical Transformers--JDZ - 10  Power Voltage&#8220;\" rel=\"nofollow\" data-success_message=\"\">Weiterlesen<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1934\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/section>\n<section class=\"subian-semv2-acbr\" aria-labelledby=\"subian-semv2-acbr-title\">\n<div class=\"subian-semv2-acbr-split\">\n<div class=\"subian-semv2-acbr-text\">\n<h2 id=\"subian-semv2-acbr-title\">What Is a 150 kVA Step Down Transformer?<\/h2>\n<p class=\"subian-semv2-acbr-intro\">A 150 kVA step down transformer reduces a higher supply voltage to a lower utilisation voltage so that standard equipment can operate safely. Typical duties include changing 11kV (or similar medium voltage) to 400V\/230V for a farm, workshop or small plant, and changing a 480V commercial supply to 208Y\/120V for lighting, receptacles and HVAC loads.<\/p>\n<p>Beyond changing the voltage level, the transformer isolates the load from the supply and creates a separately derived neutral, which simplifies protection and earthing on the stepped-down side. Sizing is set by the connected load and diversity, not by the machine nameplate alone.<\/p>\n<\/div>\n<ul class=\"subian-semv2-acbr-points\">\n<li><strong>MV-to-LV and LV-to-LV ratios<\/strong> &#8211; 11kV\/0.4kV, 480V\/208Y\/120V and other combinations.<\/li>\n<li><strong>Oil-immersed or dry-type<\/strong> &#8211; outdoor distribution duty or indoor commercial duty.<\/li>\n<li><strong>Coils wound in-house<\/strong> &#8211; ratio, impedance and tappings matched to your site.<\/li>\n<li><strong>Routine-tested per unit<\/strong> &#8211; loss, ratio, insulation and dielectric checks to IEC 60076.<\/li>\n<li><strong>Replacement support<\/strong> &#8211; build to the failed unit&#8217;s nameplate data and drawings.<\/li>\n<li><strong>OEM &amp; distributor supply<\/strong> &#8211; private labels, packaging and volume programmes.<\/li>\n<\/ul>\n<\/div>\n<h3 class=\"subian-semv2-acbr-subtitle\">Which Type Fits Your Site?<\/h3>\n<p class=\"subian-semv2-acbr-subtitle-desc\">The choice is normally settled by the incoming voltage, the building type and the local fire rules:<\/p>\n<div class=\"subian-t2-types\">\n<div class=\"subian-t2-type\">\n<h4>MV-to-LV distribution type<\/h4>\n<p>an oil-immersed unit that steps 11kV (or similar) to 400V\/230V for outdoor pole, plinth or small-substation installation.<\/p>\n<\/div>\n<div class=\"subian-t2-type\">\n<h4>480V to 208Y\/120V dry type<\/h4>\n<p>a ventilated dry-type unit for commercial buildings and light industry fed from a 480V service.<\/p>\n<\/div>\n<div class=\"subian-t2-type\">\n<h4>Voltage-matching units<\/h4>\n<p>isolation or auto-transformers that connect 400V, 380V or 230V systems to equipment built for another utilisation voltage.<\/p>\n<\/div>\n<\/div>\n<h3 class=\"subian-semv2-acbr-subtitle\">150 kVA Step Down Transformer Technical Data<\/h3>\n<div class=\"subian-semv2-acbr-table-wrap\">\n<table class=\"subian-semv2-acbr-specs\">\n<thead>\n<tr>\n<th scope=\"col\">Parameter<\/th>\n<th scope=\"col\">Specification<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<th scope=\"row\">Rated capacity<\/th>\n<td>150 kVA, three-phase<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Typical ratios<\/th>\n<td>11kV\/0.4kV \u00b7 480V\/208Y\/120V \u00b7 400V\/230V<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Cooling<\/th>\n<td>ONAN (oil) \/ air-cooled (dry)<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Insulation class<\/th>\n<td>oil type class A \/ dry type class F<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Vector group<\/th>\n<td>Dyn11 \/ Dyn1 (per specification)<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Frequency<\/th>\n<td>50 \/ 60 Hz<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Standard<\/th>\n<td>IEC 60076 \/ GB 1094<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/section>\n<section class=\"subian-semv2-acbr\" aria-labelledby=\"subian-semv2-acbr-title\">\n<h2 id=\"subian-semv2-acbr-title\" style=\"font-size: 26px; line-height: 1.35;\">Full-Load Current and Feeder Sizing at 150 kVA<\/h2>\n<p>The secondary current decides the downstream cable and breaker size, and it changes with the voltage you step down to. At a 400V secondary, 150 kVA is about 216 A per phase; at 208V (the 208Y\/120V system), it is roughly 416 A per phase because the voltage is lower. On an 11kV primary the current is only about 7.9 A.<\/p>\n<p>Feeder conductors are then selected for the applicable current with margin for continuous loading, voltage drop over the cable length and fault current. As a rule of thumb the figures above point to a copper cable in the 70-95 mm\u00b2 range for the 400V side in short runs, but the final size must be confirmed by a licensed engineer against the local wiring code, the distance and the protective device.<\/p>\n<h3 class=\"subian-semv2-acbr-subtitle\">Indicative currents by secondary voltage<\/h3>\n<div class=\"subian-semv2-acbr-table-wrap\">\n<table class=\"subian-semv2-acbr-specs\">\n<tbody>\n<tr>\n<th scope=\"row\">Secondary 400 V<\/th>\n<td>approx. 216 A per phase<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Secondary 208 V (Y\/120)<\/th>\n<td>approx. 416 A per phase<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Primary 11 kV<\/th>\n<td>approx. 7.9 A<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Continuous real load at 0.8 pf<\/th>\n<td>approx. 120 kW<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/section>\n<section class=\"subian-semv2-acbr\" aria-labelledby=\"subian-semv2-acbr-title\">\n<h2 id=\"subian-semv2-acbr-title\" style=\"font-size: 26px; line-height: 1.35;\">Size, Weight, Colour and Installation Space<\/h2>\n<p>Dimensions depend on the ratio and type &#8211; the drawing issued for your order is the reference. As a planning guide, an oil-immersed 150 kVA MV-to-LV unit is in the region of 1.2 m long and 1.1 m high to the tank top with a transport mass of roughly 700-1,000 kg, while a dry-type 150 kVA unit is usually an enclosed cube around 1 m per side that can be moved through standard doorways.<\/p>\n<p>Outdoor oil tanks are finished in grey or green; dry-type enclosures come in light grey as standard with RAL colours available for branding. Floor-standing units need a level surface, clearance for ventilation (dry types) and cable access &#8211; our outline drawing includes the recommended spacing.<\/p>\n<h3 class=\"subian-semv2-acbr-subtitle\">Colour and finish options<\/h3>\n<div class=\"subian-semv2-acbr-table-wrap\">\n<table class=\"subian-semv2-acbr-specs\">\n<tbody>\n<tr>\n<th scope=\"row\">Grey (RAL 7035 style)<\/th>\n<td>standard indoor and dry-type finish<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Green \/ blue \/ black<\/th>\n<td>outdoor tank colours on request<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Coastal paint system<\/th>\n<td>for marine or high-humidity sites<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Custom nameplate<\/th>\n<td>private-label details per order<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/section>\n<section class=\"subian-semv2-acbr\" aria-labelledby=\"subian-semv2-acbr-title\">\n<h2 id=\"subian-semv2-acbr-title\" style=\"font-size: 26px; line-height: 1.35;\">New, Used or Replacement &#8211; and Where to Buy<\/h2>\n<p>Industrial-supply listings and marketplaces offer 150 kVA step-down units through regional distributors, and some buyers compare those prices with factory-direct supply. A new factory unit includes fresh test reports, a warranty and a design matched to your ratio; used stock should only be considered with a full inspection record, oil test (for oil types) and impedance data.<\/p>\n<p>For a replacement, the nameplate of the old unit &#8211; ratio, kVA, impedance, vector group &#8211; lets us match the new transformer to the existing protection and footprint. If the unit was installed by an electrical contractor, ordering through them is common; alternatively we ship factory-direct worldwide with export documentation and support your local installer with drawings.<\/p>\n<p>Delivery is confirmed at quotation. Production is scheduled against the approved drawing, and every shipment is packed, photographed and documented before it leaves the factory.<\/p>\n<\/section>\n<section class=\"subian-semv2-factory\" aria-labelledby=\"subian-semv2-factory-title\">\n<div class=\"subian-semv2-factory-head\">\n<h2 id=\"subian-semv2-factory-title\" class=\"subian-semv2-factory-title\">Controlled Production From Winding to Test<\/h2>\n<p class=\"subian-semv2-factory-intro\">Core stacking, coil winding, vacuum drying and final testing are all performed in-house, which is what lets us build non-catalogue ratios for step-down duty.<\/p>\n<\/div>\n<div class=\"subian-semv2-factory-gallery\">\n<div class=\"subian-semv2-factory-item subian-semv2-factory-item--a\"><img decoding=\"async\" class=\"subian-semv2-bg-img\" src=\"\/wp-content\/uploads\/2026\/08\/subian-electric-transformer-winding-process.webp\" alt=\"Winding &amp; Core\" \/><\/p>\n<h3 class=\"subian-semv2-factory-card-title\">Winding &amp; Core<\/h3>\n<p class=\"subian-semv2-factory-card-text\">Coils are wound for the exact ratio and impedance of your order, with layer insulation controlled at every pass.<\/p>\n<p><a class=\"subian-semv2-factory-link\" href=\"\/about-us\/\">Learn More \u2192<\/a><\/p>\n<\/div>\n<div class=\"subian-semv2-factory-item subian-semv2-factory-item--b\"><img decoding=\"async\" class=\"subian-semv2-bg-img\" src=\"\/wp-content\/uploads\/2026\/08\/subian-electric-transformer-drying-process.webp\" alt=\"Drying &amp; Impregnation\" \/><\/p>\n<h3 class=\"subian-semv2-factory-card-title\">Drying &amp; Impregnation<\/h3>\n<p class=\"subian-semv2-factory-card-text\">Oil units are vacuum dried before filling; dry-type units are vacuum impregnated for quiet, stable operation.<\/p>\n<p><a class=\"subian-semv2-factory-link\" href=\"\/about-us\/\">Learn More \u2192<\/a><\/p>\n<\/div>\n<div class=\"subian-semv2-factory-item subian-semv2-factory-item--c\"><img decoding=\"async\" class=\"subian-semv2-bg-img\" src=\"\/wp-content\/uploads\/2026\/08\/subian-electric-quality-center.webp\" alt=\"Quality &amp; Testing Center\" \/><\/p>\n<h3 class=\"subian-semv2-factory-card-title\">Quality &amp; Testing Center<\/h3>\n<p class=\"subian-semv2-factory-card-text\">Routine tests cover ratio, losses, insulation and dielectric withstand on every unit before dispatch.<\/p>\n<p><a class=\"subian-semv2-factory-link\" href=\"\/about-us\/\">Learn More \u2192<\/a><\/p>\n<\/div>\n<div class=\"subian-semv2-factory-item subian-semv2-factory-item--d\"><img decoding=\"async\" class=\"subian-semv2-bg-img\" src=\"\/wp-content\/uploads\/2026\/08\/subian-electric-transformer-testing-process.webp\" alt=\"Test Documentation\" \/><\/p>\n<h3 class=\"subian-semv2-factory-card-title\">Test Documentation<\/h3>\n<p class=\"subian-semv2-factory-card-text\">Reports, outline drawings and installation instructions ship with the transformer for project approval.<\/p>\n<p><a class=\"subian-semv2-factory-link\" href=\"\/about-us\/\">Learn More \u2192<\/a><\/p>\n<\/div>\n<\/div>\n<\/section>\n<section class=\"subian-semv2-cta\" aria-labelledby=\"subian-semv2-cta-title\">\n<div class=\"subian-semv2-cta-content\">\n<h2 id=\"subian-semv2-cta-title\">150 kVA Step Down Transformer Price &amp; Quotation<\/h2>\n<p>Prices depend on the ratio, the type and the loss specification. Request a written factory quotation with your incoming and outgoing voltage &#8211; we confirm the design on drawings before you commit, and single units are available as well as volume orders.<\/p>\n<div class=\"subian-semv2-cta-actions\"><a class=\"subian-semv2-cta-btn subian-semv2-cta-btn--light\" href=\"\/oem-odm\/\">Get Started \u2192<\/a><br \/>\n<a class=\"subian-semv2-cta-btn subian-semv2-cta-btn--red\" href=\"\/contact-us\/\">Contact Us \u2192<\/a><\/div>\n<\/div>\n<\/section>\n<section class=\"subian-semv2-section\" aria-labelledby=\"subian-semv2-title\">\n<div class=\"subian-semv2-head\">\n<h2 id=\"subian-semv2-title\" class=\"subian-semv2-head-title\">OEM \/ ODM &amp; Wholesale Step-Down Supply<\/h2>\n<p class=\"subian-semv2-head-intro\">Electrical wholesalers, panel builders and OEMs brand our step-down units as their own, with private-label plates, packaging and documentation.<\/p>\n<\/div>\n<div class=\"subian-semv2-grid\">\n<article class=\"subian-semv2-card\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/2026\/08\/subian-electric-transformer-assembly-process.webp\" alt=\"OEM \/ ODM\" \/><\/p>\n<div class=\"subian-semv2-card-body\">\n<div class=\"subian-semv2-card-top\">\n<h3 class=\"subian-semv2-card-title\">OEM \/ ODM<\/h3>\n<p><span class=\"subian-semv2-card-tag\">Factory-Direct<\/span><\/p>\n<\/div>\n<p class=\"subian-semv2-card-desc\">Custom ratios, enclosures and branding built on our transformer platforms.<\/p>\n<hr class=\"subian-semv2-card-line\" \/>\n<p class=\"subian-semv2-card-features\">Factory direct \u00b7 Test docs \u00b7 Export support<\/p>\n<\/div>\n<\/article>\n<article class=\"subian-semv2-card\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/2026\/08\/subian-electric-transformers-production-workshop.webp\" alt=\"Wholesale Supply\" \/><\/p>\n<div class=\"subian-semv2-card-body\">\n<div class=\"subian-semv2-card-top\">\n<h3 class=\"subian-semv2-card-title\">Wholesale Supply<\/h3>\n<p><span class=\"subian-semv2-card-tag\">Volume Pricing<\/span><\/p>\n<\/div>\n<p class=\"subian-semv2-card-desc\">Stock programmes and container quantities for wholesalers.<\/p>\n<hr class=\"subian-semv2-card-line\" \/>\n<p class=\"subian-semv2-card-features\">Factory direct \u00b7 Test docs \u00b7 Export support<\/p>\n<\/div>\n<\/article>\n<article class=\"subian-semv2-card\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/2026\/08\/subian-electric-quality-center.webp\" alt=\"Distributor Support\" \/><\/p>\n<div class=\"subian-semv2-card-body\">\n<div class=\"subian-semv2-card-top\">\n<h3 class=\"subian-semv2-card-title\">Distributor Support<\/h3>\n<p><span class=\"subian-semv2-card-tag\">Channel Partners<\/span><\/p>\n<\/div>\n<p class=\"subian-semv2-card-desc\">Technical data, sales material and account management for partners.<\/p>\n<hr class=\"subian-semv2-card-line\" \/>\n<p class=\"subian-semv2-card-features\">Factory direct \u00b7 Test docs \u00b7 Export support<\/p>\n<\/div>\n<\/article>\n<\/div>\n<\/section>\n<section class=\"subian-semv2-compare\" aria-labelledby=\"subian-semv2-compare-title\">\n<div class=\"subian-semv2-compare-row\">\n<div class=\"subian-semv2-compare-text\">\n<h2 id=\"subian-semv2-compare-title\">Step-Down vs Isolation &#8211; and Oil vs Dry<\/h2>\n<p>A step-down transformer always provides galvanic isolation between its windings while changing the voltage level. An isolation transformer keeps the ratio at or near 1:1 and is selected mainly to separate the load from the supply, reduce noise or create a clean neutral point.<\/p>\n<p>For the construction choice, an oil-immersed 150 kVA unit is the economical standard for outdoor MV-to-LV duty, while a dry-type transformer is quieter, lighter and oil-free &#8211; the usual preference inside commercial buildings, where the 480V-to-208Y\/120V type is the most common 150 kVA application.<\/p>\n<\/div>\n<div class=\"subian-semv2-compare-media\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/2026\/08\/subian-electric-quality-center.webp\" alt=\"Product comparison and selection guide\" \/><\/div>\n<\/div>\n<\/section>\n<section class=\"subian-semv2-brands\" aria-labelledby=\"subian-semv2-brands-title\">\n<div class=\"subian-semv2-brands-row\">\n<div class=\"subian-semv2-brands-media\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/2026\/08\/subian-electric-transformers-production-workshop.webp\" alt=\"Factory suppliers and manufacturers in China\" \/><\/div>\n<div class=\"subian-semv2-brands-text\">\n<h2 id=\"subian-semv2-brands-title\">How to Choose a 150 kVA Step Down Transformer Manufacturer<\/h2>\n<p>Start with the ratio: confirm the incoming and outgoing voltage, because a unit built for 480V-to-208V cannot simply be reconnected for 400V duty at full rating. Then compare efficiency (loss figures), impedance, temperature rise and the availability of a matching test report.<\/p>\n<p>Check the manufacturer&#8217;s real capability &#8211; winding in-house, vacuum processing, routine testing and type-test evidence. Subian&#8217;s credentials include ISO9001, ISO14001, ISO45001, CE and UL certification, a 110 kV transformer type-test report, and an open-door factory policy with VR tour available to buyers who cannot travel.<\/p>\n<p>Finally, compare the buying experience: how quickly drawings and questions are answered, whether the manufacturer issues documents for your market, and how replacement or warranty matters are handled after shipment.<\/p>\n<div class=\"hy-lb-btn-wrap\"><a class=\"hy-lb-btn\" href=\"\/contact-us\/\">Get a Quote \u2192<\/a><\/div>\n<\/div>\n<\/div>\n<\/section>\n<section class=\"subian-semv2-cred\" aria-labelledby=\"subian-semv2-cred-title\">\n<div class=\"subian-semv2-cred-head\">\n<h2 id=\"subian-semv2-cred-title\" class=\"subian-semv2-cred-title\">Certifications &amp; Quality Assurance<\/h2>\n<p class=\"subian-semv2-cred-intro\">Our step-down and distribution transformer production is covered by ISO9001, ISO14001 and ISO45001 systems, CE and UL certification, and type-tested designs that support project and market approval.<\/p>\n<\/div>\n<h3 class=\"subian-semv2-cred-subtitle\">Product Certifications<\/h3>\n<div class=\"swiper subian-ab-cert-swiper\">\n<div class=\"swiper-wrapper\">\n<div class=\"swiper-slide\" role=\"group\" aria-label=\"1 \/ 10\"><a class=\"subian-ab-cert glightbox3\" href=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/subian-electric-10kv-dry-type-certificate.webp\" data-gallery=\"subian-about-certificates\" data-title=\"10 kV Dry-Type Transformer Certificate\"><img loading=\"lazy\" decoding=\"async\" class=\"attachment-large size-large\" src=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/subian-electric-10kv-dry-type-certificate.webp\" alt=\"10 kV Dry-Type Transformer Certificate\" width=\"600\" height=\"848\" \/><strong class=\"f18 lh-13\">10 kV Dry-Type Transformer Certificate<\/strong><\/a><\/div>\n<div class=\"swiper-slide\" role=\"group\" aria-label=\"2 \/ 10\"><a class=\"subian-ab-cert glightbox3\" href=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/subian-electric-35kv-cb-certificate.webp\" data-gallery=\"subian-about-certificates\" data-title=\"35 kV Transformer CB Certificate\"><img loading=\"lazy\" decoding=\"async\" class=\"attachment-large size-large\" src=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/subian-electric-35kv-cb-certificate.webp\" alt=\"35 kV Transformer CB Certificate\" width=\"600\" height=\"848\" \/><strong class=\"f18 lh-13\">35 kV Transformer CB Certificate<\/strong><\/a><\/div>\n<div class=\"swiper-slide\" role=\"group\" aria-label=\"3 \/ 10\"><a class=\"subian-ab-cert glightbox3\" href=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/subian-electric-35kv-ce-certificate.webp\" data-gallery=\"subian-about-certificates\" data-title=\"35 kV Transformer CE Verification\"><img loading=\"lazy\" decoding=\"async\" class=\"attachment-large size-large\" src=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/subian-electric-35kv-ce-certificate.webp\" alt=\"35 kV Transformer CE Verification\" width=\"600\" height=\"848\" \/><strong class=\"f18 lh-13\">35 kV Transformer CE Verification<\/strong><\/a><\/div>\n<div class=\"swiper-slide\" role=\"group\" aria-label=\"4 \/ 10\"><a class=\"subian-ab-cert glightbox3\" href=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/subian-electric-ce-certificate.webp\" data-gallery=\"subian-about-certificates\" data-title=\"Transformer CE Certificate\"><img loading=\"lazy\" decoding=\"async\" class=\"attachment-large size-large\" src=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/subian-electric-ce-certificate.webp\" alt=\"Transformer CE Certificate\" width=\"600\" height=\"848\" \/><strong class=\"f18 lh-13\">Transformer CE Certificate<\/strong><\/a><\/div>\n<div class=\"swiper-slide\" role=\"group\" aria-label=\"5 \/ 10\"><a class=\"subian-ab-cert glightbox3\" href=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/subian-electric-cn26i11c-certificate.webp\" data-gallery=\"subian-about-certificates\" data-title=\"Dry-Type Transformer Test Verification\"><img loading=\"lazy\" decoding=\"async\" class=\"attachment-large size-large\" src=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/subian-electric-cn26i11c-certificate.webp\" alt=\"Dry-Type Transformer Test Verification\" width=\"600\" height=\"848\" \/><strong class=\"f18 lh-13\">Dry-Type Transformer Test Verification<\/strong><\/a><\/div>\n<div class=\"swiper-slide\" role=\"group\" aria-label=\"6 \/ 10\"><a class=\"subian-ab-cert glightbox3\" href=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/subian-electric-iso-14001-certificate.webp\" data-gallery=\"subian-about-certificates\" data-title=\"ISO 14001 Environmental Management\"><img loading=\"lazy\" decoding=\"async\" class=\"attachment-large size-large\" src=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/subian-electric-iso-14001-certificate.webp\" alt=\"ISO 14001 Environmental Management\" width=\"600\" height=\"848\" \/><strong class=\"f18 lh-13\">ISO 14001 Environmental Management<\/strong><\/a><\/div>\n<div class=\"swiper-slide\" role=\"group\" aria-label=\"7 \/ 10\"><a class=\"subian-ab-cert glightbox3\" href=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/subian-electric-iso-45001-certificate.webp\" data-gallery=\"subian-about-certificates\" data-title=\"ISO 45001 Health &amp; Safety\"><img loading=\"lazy\" decoding=\"async\" class=\"attachment-large size-large\" src=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/subian-electric-iso-45001-certificate.webp\" alt=\"ISO 45001 Health &amp; Safety\" width=\"600\" height=\"848\" \/><strong class=\"f18 lh-13\">ISO 45001 Health &amp; Safety<\/strong><\/a><\/div>\n<div class=\"swiper-slide\" role=\"group\" aria-label=\"8 \/ 10\"><a class=\"subian-ab-cert glightbox3\" href=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/subian-electric-iso-9001-certificate.webp\" data-gallery=\"subian-about-certificates\" data-title=\"ISO 9001 Quality Management\"><img loading=\"lazy\" decoding=\"async\" class=\"attachment-large size-large\" src=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/subian-electric-iso-9001-certificate.webp\" alt=\"ISO 9001 Quality Management\" width=\"600\" height=\"848\" \/><strong class=\"f18 lh-13\">ISO 9001 Quality Management<\/strong><\/a><\/div>\n<div class=\"swiper-slide\" role=\"group\" aria-label=\"9 \/ 10\"><a class=\"subian-ab-cert glightbox3\" href=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/subian-electric-ssz22-63000-110-nx1-certificate.webp\" data-gallery=\"subian-about-certificates\" data-title=\"110 kV Transformer Type Test Report\"><img loading=\"lazy\" decoding=\"async\" class=\"attachment-large size-large\" src=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/subian-electric-ssz22-63000-110-nx1-certificate.webp\" alt=\"110 kV Transformer Type Test Report\" width=\"600\" height=\"848\" \/><strong class=\"f18 lh-13\">110 kV Transformer Type Test Report<\/strong><\/a><\/div>\n<div class=\"swiper-slide\" role=\"group\" aria-label=\"10 \/ 10\"><a class=\"subian-ab-cert glightbox3\" href=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/subian-electric-ul-certificate.webp\" data-gallery=\"subian-about-certificates\" data-title=\"UL Certificate of Compliance\"><img loading=\"lazy\" decoding=\"async\" class=\"attachment-large size-large\" src=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/subian-electric-ul-certificate.webp\" alt=\"UL Certificate of Compliance\" width=\"600\" height=\"848\" \/><strong class=\"f18 lh-13\">UL Certificate of Compliance<\/strong><\/a><\/div>\n<\/div>\n<\/div>\n<p>&nbsp;<\/p>\n<\/section>\n<section class=\"subian-related\" style=\"margin: 40px 0;\">\n<div style=\"max-width: 1200px; margin: 0 auto; padding: 0 24px;\">\n<h2 style=\"font-size: 24px; margin-bottom: 12px;\">Related Manufacturer Guides<\/h2>\n<ul style=\"columns: 2; column-gap: 48px; margin: 0; padding-left: 20px; line-height: 2;\">\n<li><a href=\"\/330-kva-transformer\/\">330 kVA Transformer<\/a><\/li>\n<li><a href=\"\/substation-33kv\/\">33kV Substation<\/a><\/li>\n<li><a href=\"\/distribution-transformer-oil-type-manufacturers\/\">Oil Type Distribution Transformer Manufacturers<\/a><\/li>\n<li><a href=\"\/dry-type-distribution-transformer-manufacturers\/\">Dry Type Distribution Transformer Manufacturers<\/a><\/li>\n<li><a href=\"\/about-us\/\">About Our Factory<\/a><\/li>\n<li><a href=\"\/oem-odm\/\">OEM \/ ODM Programs<\/a><\/li>\n<\/ul>\n<\/div>\n<\/section>\n<section class=\"subian-faq-contact\">\n<div class=\"subian-faq-contact__container\">\n<div class=\"subian-faq-contact__grid\">\n<div class=\"subian-faq-contact__left\"><span class=\"subian-faq-contact__eyebrow\">FAQs<\/span><\/p>\n<h2 class=\"subian-faq-contact__title\">150 kVA Step Down Transformer Manufacturers &amp; Suppliers FAQ<\/h2>\n<p class=\"subian-faq-contact__intro\">Questions buyers ask about the 150 kVA step-down rating, current, wiring and cost.<\/p>\n<div class=\"subian-faq\">\n<details class=\"subian-faq__item\">\n<summary class=\"subian-faq__question\">How many amps can a 150 kVA transformer handle?<\/summary>\n<div class=\"subian-faq__answer\">It depends on the secondary voltage. At 400V the full-load current is about 216 A per phase; at 208V on a 208Y\/120V system it is about 416 A per phase; on an 11kV primary about 7.9 A. The kVA rating is the same in every case &#8211; the current simply rises as the voltage falls.<\/div>\n<\/details>\n<details class=\"subian-faq__item\">\n<summary class=\"subian-faq__question\">Is there a 150 kVA transformer?<\/summary>\n<div class=\"subian-faq__answer\">Yes &#8211; 150 kVA is a standard three-phase rating used widely for both distribution and commercial step-down duty. It is built as an oil-immersed type for outdoor MV-to-LV service and as a dry-type unit for indoor applications such as 480V to 208Y\/120V supply.<\/div>\n<\/details>\n<details class=\"subian-faq__item\">\n<summary class=\"subian-faq__question\">What size wire to feed a 150 kVA transformer?<\/summary>\n<div class=\"subian-faq__answer\">On the 400V side the full-load current is about 216 A, which in short runs typically points to a copper feeder in the 70-95 mm\u00b2 class, but the final size must be calculated for voltage drop, fault current and the installation method under the local wiring code. The primary side, at around 8 A on 11kV, is set by the upstream protection and cable standard.<\/div>\n<\/details>\n<details class=\"subian-faq__item\">\n<summary class=\"subian-faq__question\">How much does a 150 kVA transformer cost?<\/summary>\n<div class=\"subian-faq__answer\">The factory price depends on the ratio, the type (oil or dry), the loss specification and the quantity. Because copper and core steel prices move with the market, request a current written quotation with your voltages &#8211; the same unit in dry-type form costs more than the oil-immersed equivalent.<\/div>\n<\/details>\n<details class=\"subian-faq__item\">\n<summary class=\"subian-faq__question\">How do I size a transformer for my load?<\/summary>\n<div class=\"subian-faq__answer\">Add the connected load in kW, apply a diversity factor for what actually runs together, divide by the expected power factor, and add margin for motor starting and future growth. The resulting kVA figure is compared with standard ratings &#8211; if it sits near 150 kVA, that unit with correct ratio and impedance is the economical choice.<\/div>\n<\/details>\n<details class=\"subian-faq__item\">\n<summary class=\"subian-faq__question\">Do you support replacement and used-unit comparisons?<\/summary>\n<div class=\"subian-faq__answer\">Yes. For replacements we work from the old nameplate or drawings so the new unit matches the existing protection and footprint. For buyers comparing with used stock, we provide new-unit loss data and test reports so the comparison is made on documented performance, not price alone.<\/div>\n<\/details>\n<\/div>\n<\/div>\n<div class=\"subian-faq-contact__form\">\n<p class=\"subian-faq-contact__form-label\">Contact Subian<\/p>\n<h3 class=\"subian-faq-contact__form-title\">Need the Right Specification?<\/h3>\n<p class=\"subian-faq-contact__form-copy\">Tell us your target market, product type, quantity and technical requirements. Our team will help you identify a suitable configuration for your project.<\/p>\n<div class='fluentform ff-default fluentform_wrapper_1 ffs_default_wrap'><form data-form_id=\"1\" id=\"fluentform_1\" class=\"frm-fluent-form fluent_form_1 ff-el-form-top ff_form_instance_1_1 ff-form-loading ffs_default\" data-form_instance=\"ff_form_instance_1_1\" method=\"POST\" ><fieldset  style=\"border: none!important;margin: 0!important;padding: 0!important;background-color: transparent!important;box-shadow: none!important;outline: none!important; min-inline-size: 100%;\">\n                    <legend class=\"ff_screen_reader_title\" style=\"display: block; margin: 0!important;padding: 0!important;height: 0!important;text-indent: -999999px;width: 0!important;overflow:hidden;\">Contact Form Demo<\/legend>        <div\n                style=\"display: none!important; position: absolute!important; transform: translateX(1000%)!important;\"\n                class=\"ff-el-group ff-hpsf-container\"\n        >\n            <div class=\"ff-el-input--label asterisk-right\">\n                <label for=\"ff_1_item_sf\" aria-label=\"Subscribe\">\n                    Subscribe                <\/label>\n            <\/div>\n            <div class=\"ff-el-input--content\">\n                <input type=\"text\"\n                       name=\"item_1__fluent_sf\"\n                       class=\"ff-el-form-control\"\n                       id=\"ff_1_item_sf\"\n                \/>\n            <\/div>\n        <\/div>\n                <input type=\"hidden\" id=\"__fluent_protection_token_1\" class=\"fluent-form-token-field\" name=\"__fluent_protection_token_1\">\n        <input type='hidden' name='__fluent_form_embded_post_id' value='11414' \/><input type=\"hidden\" id=\"_fluentform_1_fluentformnonce\" name=\"_fluentform_1_fluentformnonce\" value=\"5a0e5e96c9\" \/><input type=\"hidden\" name=\"_wp_http_referer\" value=\"\/de\/wp-json\/wp\/v2\/pages\/11414\" \/><div data-type=\"name-element\" data-name=\"names\" class=\" ff-field_container ff-name-field-wrapper\" ><div class='ff-t-container'><div class='ff-t-cell '><div class='ff-el-group'><div class=\"ff-el-input--label asterisk-right\"><label for='ff_1_names_first_name_' id='label_ff_1_names_first_name_' >First Name<\/label><\/div><div class='ff-el-input--content'><input type=\"text\" name=\"names[first_name]\" id=\"ff_1_names_first_name_\" class=\"ff-el-form-control\" aria-invalid=\"false\" aria-required=false><\/div><\/div><\/div><div class='ff-t-cell '><div class='ff-el-group'><div class=\"ff-el-input--label asterisk-right\"><label for='ff_1_names_last_name_' id='label_ff_1_names_last_name_' >Last Name<\/label><\/div><div class='ff-el-input--content'><input type=\"text\" name=\"names[last_name]\" id=\"ff_1_names_last_name_\" class=\"ff-el-form-control\" aria-invalid=\"false\" aria-required=false><\/div><\/div><\/div><\/div><\/div><div class='ff-el-group'><div class=\"ff-el-input--label ff-el-is-required asterisk-right\"><label for='ff_1_email' id='label_ff_1_email' aria-label=\"Email Address\">Email Address<\/label><\/div><div class='ff-el-input--content'><input type=\"email\" name=\"email\" id=\"ff_1_email\" class=\"ff-el-form-control\" data-name=\"email\"  aria-invalid=\"false\" aria-required=true><\/div><\/div><div class='ff-el-group'><div class=\"ff-el-input--label asterisk-right\"><label for='ff_1_subject' id='label_ff_1_subject' aria-label=\"Subject\">Subject<\/label><\/div><div class='ff-el-input--content'><input type=\"text\" name=\"subject\" class=\"ff-el-form-control\" data-name=\"subject\" id=\"ff_1_subject\"  aria-invalid=\"false\" aria-required=false><\/div><\/div><div class='ff-el-group'><div class=\"ff-el-input--label ff-el-is-required asterisk-right\"><label for='ff_1_message' id='label_ff_1_message' aria-label=\"Tell us about your project\">Tell us about your project<\/label><\/div><div class='ff-el-input--content'><textarea aria-required=\"true\" aria-labelledby=\"label_ff_1_message\" name=\"message\" id=\"ff_1_message\" class=\"ff-el-form-control\" rows=\"4\" cols=\"2\" data-name=\"message\" ><\/textarea><\/div><\/div><div class='ff-el-group ff-text-left ff_submit_btn_wrapper'><button type=\"submit\" class=\"ff-btn ff-btn-submit ff-btn-md ff_btn_style\"  aria-label=\"Send message\">Send message<\/button><\/div><\/fieldset><\/form><div id='fluentform_1_errors' class='ff-errors-in-stack ff_form_instance_1_1 ff-form-loading_errors ff_form_instance_1_1_errors'><\/div><\/div>            <script type=\"text\/javascript\">\n                window.fluent_form_ff_form_instance_1_1 = {\"id\":\"1\",\"ajaxUrl\":\"https:\\\/\\\/subian-electric.com\\\/wp-admin\\\/admin-ajax.php\",\"settings\":{\"layout\":{\"labelPlacement\":\"top\",\"helpMessagePlacement\":\"with_label\",\"errorMessagePlacement\":\"inline\",\"cssClassName\":\"\",\"asteriskPlacement\":\"asterisk-right\"},\"restrictions\":{\"denyEmptySubmission\":{\"enabled\":false}}},\"form_instance\":\"ff_form_instance_1_1\",\"form_id_selector\":\"fluentform_1\",\"rules\":{\"names[first_name]\":{\"required\":{\"value\":false,\"message\":\"This field is required\",\"global\":false,\"global_message\":\"This field is required\"}},\"names[middle_name]\":{\"required\":{\"value\":false,\"message\":\"This field is required\",\"global\":false,\"global_message\":\"This field is required\"}},\"names[last_name]\":{\"required\":{\"value\":false,\"message\":\"This field is required\",\"global\":false,\"global_message\":\"This field is required\"}},\"email\":{\"required\":{\"value\":true,\"message\":\"This field is required\",\"global\":false,\"global_message\":\"This field is required\"},\"email\":{\"value\":true,\"message\":\"This field must contain a valid email\",\"global\":false,\"global_message\":\"This field must contain a valid email\"}},\"subject\":{\"required\":{\"value\":false,\"message\":\"This field is required\",\"global\":false,\"global_message\":\"This field is required\"}},\"message\":{\"required\":{\"value\":true,\"message\":\"This field is required\",\"global\":false,\"global_message\":\"This field is required\"}}},\"debounce_time\":300,\"file_upload_settings\":[]};\n                            <\/script>\n            \n<div class=\"subian-faq-contact__trust\">Your inquiry is sent directly to our export sales team.<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n<p><script type=\"application\/ld+json\">{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"How many amps can a 150 kVA transformer handle?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"It depends on the secondary voltage. At 400V the full-load current is about 216 A per phase; at 208V on a 208Y\/120V system it is about 416 A per phase; on an 11kV primary about 7.9 A. The kVA rating is the same in every case - the current simply rises as the voltage falls.\"}}, {\"@type\": \"Question\", \"name\": \"Is there a 150 kVA transformer?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes - 150 kVA is a standard three-phase rating used widely for both distribution and commercial step-down duty. It is built as an oil-immersed type for outdoor MV-to-LV service and as a dry-type unit for indoor applications such as 480V to 208Y\/120V supply.\"}}, {\"@type\": \"Question\", \"name\": \"What size wire to feed a 150 kVA transformer?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"On the 400V side the full-load current is about 216 A, which in short runs typically points to a copper feeder in the 70-95 mm\u00b2 class, but the final size must be calculated for voltage drop, fault current and the installation method under the local wiring code. The primary side, at around 8 A on 11kV, is set by the upstream protection and cable standard.\"}}, {\"@type\": \"Question\", \"name\": \"How much does a 150 kVA transformer cost?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The factory price depends on the ratio, the type (oil or dry), the loss specification and the quantity. Because copper and core steel prices move with the market, request a current written quotation with your voltages - the same unit in dry-type form costs more than the oil-immersed equivalent.\"}}, {\"@type\": \"Question\", \"name\": \"How do I size a transformer for my load?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Add the connected load in kW, apply a diversity factor for what actually runs together, divide by the expected power factor, and add margin for motor starting and future growth. The resulting kVA figure is compared with standard ratings - if it sits near 150 kVA, that unit with correct ratio and impedance is the economical choice.\"}}, {\"@type\": \"Question\", \"name\": \"Do you support replacement and used-unit comparisons?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. For replacements we work from the old nameplate or drawings so the new unit matches the existing protection and footprint. For buyers comparing with used stock, we provide new-unit loss data and test reports so the comparison is made on documented performance, not price alone.\"}}]}<\/script><\/p>\n","protected":false},"excerpt":{"rendered":"<p>COMPANY PROFILE 150 kVA Step Down Transformer Manufacturers &amp; Suppliers &#8211; Custom Ratio Factory Subian Electric builds step-down transformers at our 50,000-square-metre factory in Xuzhou, China. A 150 kVA step down transformer from this factory is made for two common duties: stepping a medium-voltage line &#8211; for example 11kV &#8211; down to 400V\/230V, or stepping [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"subian-seo-landing.php","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-11414","page","type-page","status-publish","hentry"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/subian-electric.com\/de\/wp-json\/wp\/v2\/pages\/11414","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/subian-electric.com\/de\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/subian-electric.com\/de\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/subian-electric.com\/de\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/subian-electric.com\/de\/wp-json\/wp\/v2\/comments?post=11414"}],"version-history":[{"count":1,"href":"https:\/\/subian-electric.com\/de\/wp-json\/wp\/v2\/pages\/11414\/revisions"}],"predecessor-version":[{"id":11415,"href":"https:\/\/subian-electric.com\/de\/wp-json\/wp\/v2\/pages\/11414\/revisions\/11415"}],"wp:attachment":[{"href":"https:\/\/subian-electric.com\/de\/wp-json\/wp\/v2\/media?parent=11414"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}