{"id":11416,"date":"2026-09-02T23:22:05","date_gmt":"2026-09-02T15:22:05","guid":{"rendered":"https:\/\/subian-electric.com\/?page_id=11416"},"modified":"2026-09-02T23:22:05","modified_gmt":"2026-09-02T15:22:05","slug":"330-kva-transformer","status":"publish","type":"page","link":"https:\/\/subian-electric.com\/it\/330-kva-transformer\/","title":{"rendered":"Trasformatore 330 Kva all'ingrosso dalla Cina"},"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>330 kVA Transformer Manufacturers &amp; Suppliers &#8211; Distribution Transformer Factory<\/h1>\n<p>Subian Electric is a transformer manufacturer in Xuzhou, Jiangsu, China, with a 50,000-square-metre production base and 350+ employees. The 330 kVA rating is one of the most requested in our distribution transformer range, built for 6kV to 33kV primary networks with a 400V\/230V secondary.<br \/>\nBuying factory-direct means manufacturer pricing, a transformer engineered to your voltage and tapping requirements, and a routine test report for every unit produced under ISO9001 and CE controlled processes.<br \/>\nSend your primary voltage, impedance preference and quantity. Our export team will confirm the design, drawings and a quotation 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=\"330 kVA distribution 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\">Distribution Transformers We Manufacture<\/h2>\n<p class=\"singlepage-section-desc\">Oil-immersed and dry-type distribution transformers from 30 kVA upward &#8211; pole, pad and substation styles &#8211; with the 330 kVA rating available in standard and project-specific ratios.<\/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\/it\/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\/it\/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=\"Leggi di pi\u00f9 su &quot;10kV  Dry-Type Transformer-SCBH series Amorphous Alloy&quot;\" rel=\"nofollow\" data-success_message=\"\">Leggi tutto<\/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\/it\/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\/it\/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=\"Leggi di pi\u00f9 su &quot;20-35KV  Dry-Type Transformer&quot;\" rel=\"nofollow\" data-success_message=\"\">Leggi tutto<\/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\/it\/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\/it\/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=\"Leggi di pi\u00f9 su &quot;20-35KV SCB Series Epoxy Resin Dry-Type Transformer&quot;\" rel=\"nofollow\" data-success_message=\"\">Leggi tutto<\/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\/it\/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\/it\/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=\"Leggi di pi\u00f9 su &quot;20KV Oil-immersed Distribution Transformer&quot;\" rel=\"nofollow\" data-success_message=\"\">Leggi tutto<\/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\/it\/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\/it\/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=\"Leggi di pi\u00f9 su &quot;35KV Oil-immersed Power Transformer&quot;\" rel=\"nofollow\" data-success_message=\"\">Leggi tutto<\/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\/it\/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\/it\/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=\"Leggi di pi\u00f9 su &quot;6-10KV Oil-Immersed Power Distribution Transformer&quot;\" rel=\"nofollow\" data-success_message=\"\">Leggi tutto<\/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\/it\/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\/it\/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=\"Leggi di pi\u00f9 su &quot;Current Transformer --10KV Indoor High Voltage&quot;\" rel=\"nofollow\" data-success_message=\"\">Leggi tutto<\/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\/it\/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\/it\/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=\"Leggi di pi\u00f9 su &quot;Current Transformer--LMZK Wound Current Transformer300\/5a&quot;\" rel=\"nofollow\" data-success_message=\"\">Leggi tutto<\/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\/it\/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\/it\/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=\"Leggi di pi\u00f9 su &quot;Current Transformer--LSY-10 transformer Integrated CT&quot;\" rel=\"nofollow\" data-success_message=\"\">Leggi tutto<\/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\/it\/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\/it\/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=\"Leggi di pi\u00f9 su &quot;current transformer--LXK high voltage zero sequence&quot;\" rel=\"nofollow\" data-success_message=\"\">Leggi tutto<\/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\/it\/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\/it\/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=\"Leggi di pi\u00f9 su &quot;dry type distribution transformer-6-10 KV SCB series epoxy resin cast&quot;\" rel=\"nofollow\" data-success_message=\"\">Leggi tutto<\/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\/it\/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\/it\/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=\"Leggi di pi\u00f9 su &quot;Electrical Transformers--JDZ - 10  Power Voltage&quot;\" rel=\"nofollow\" data-success_message=\"\">Leggi tutto<\/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 330 kVA Transformer?<\/h2>\n<p class=\"subian-semv2-acbr-intro\">A 330 kVA transformer is a three-phase distribution transformer rated to pass 330 kilovolt-amperes from a medium-voltage line &#8211; commonly 6kV, 10kV, 11kV, 20kV or 33kV &#8211; down to the 400V\/230V system that powers workshops, farms, residential communities and light industry.<\/p>\n<p>The rating is chosen from the site&#8217;s peak demand and expected load growth. Sizing correctly keeps the transformer&#8217;s own losses proportionate to the load, holds the secondary voltage within equipment limits, and gives the utility a clean, protectable transformation point that is simple to meter.<\/p>\n<\/div>\n<ul class=\"subian-semv2-acbr-points\">\n<li><strong>30 kVA &#8211; 63,000 kVA range<\/strong> &#8211; with the 330 kVA rating built on standard production lines.<\/li>\n<li><strong>Oil-immersed or dry-type<\/strong> &#8211; ONAN tank units and cast-resin designs from the same factory.<\/li>\n<li><strong>In-house core and winding<\/strong> &#8211; controlled material, vacuum drying and oil filling processes.<\/li>\n<li><strong>Tested before dispatch<\/strong> &#8211; ratio, losses, insulation and dielectric checks per IEC 60076.<\/li>\n<li><strong>Documentation for approval<\/strong> &#8211; test reports, outline drawings and installation manual.<\/li>\n<li><strong>OEM \/ wholesale supply<\/strong> &#8211; custom nameplates, packaging and container programmes.<\/li>\n<\/ul>\n<\/div>\n<h3 class=\"subian-semv2-acbr-subtitle\">Available Build Types<\/h3>\n<p class=\"subian-semv2-acbr-subtitle-desc\">The same 330 kVA rating can be produced in several technologies. Your site and fire rules usually decide the type:<\/p>\n<div class=\"subian-t2-types\">\n<div class=\"subian-t2-type\">\n<h4>Oil-immersed (ONAN)<\/h4>\n<p>the economical standard for outdoor pole, plinth and compact-substation duty, with conservator or fully sealed tank options.<\/p>\n<\/div>\n<div class=\"subian-t2-type\">\n<h4>Dry-type (cast resin)<\/h4>\n<p>an oil-free 330 kVA transformer for indoor or high-rise locations where fire safety and low maintenance matter.<\/p>\n<\/div>\n<div class=\"subian-t2-type\">\n<h4>Amorphous core<\/h4>\n<p>a lower no-load-loss version of the same rating for utilities that evaluate transformers on yearly energy cost.<\/p>\n<\/div>\n<\/div>\n<h3 class=\"subian-semv2-acbr-subtitle\">330 kVA 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>330 kVA, three-phase<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Primary voltage<\/th>\n<td>6 \/ 10 \/ 11 \/ 20 \/ 33 kV<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Secondary voltage<\/th>\n<td>400 V \/ 230 V (0.4 kV)<\/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\">Vector group<\/th>\n<td>Dyn11 \/ Yyn0<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Impedance<\/th>\n<td>4% typical, project-adjustable<\/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;\">Sizing and Loading: kVA, kW and Full-Load Current<\/h2>\n<p>Buyers often ask how a 330 kVA unit converts to real power and what current it will carry. The useful power equals the kVA rating multiplied by the load power factor &#8211; about 264 kW at the common 0.8 power factor, rising to 330 kW at unity.<\/p>\n<p>Full-load current follows the standard formula I = kVA x 1000 \/ (1.732 x voltage). At the 400V secondary this is roughly 476 A per phase; on an 11kV primary about 17.3 A; on a 33kV primary about 5.8 A. These figures set the size of the LV cables, breakers and busbars downstream.<\/p>\n<p>To size a transformer from your load, add the connected kW of the equipment, apply a realistic diversity factor, divide by the expected power factor, and add margin for motor starting and growth. If your figure lands between standard ratings, tell us the duty cycle &#8211; a short-time overload capability can often bridge the gap economically.<\/p>\n<h3 class=\"subian-semv2-acbr-subtitle\">Indicative full-load currents<\/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. 476 A<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Primary 11 kV<\/th>\n<td>approx. 17.3 A<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Primary 33 kV<\/th>\n<td>approx. 5.8 A<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Typical real load at 0.8 pf<\/th>\n<td>approx. 264 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;\">Dimensions, Weight, Colour and Site Planning<\/h2>\n<p>Overall dimensions and mass vary with the voltage class, tank type and tapping range, so the drawing issued for your project is the reference. As a guide, an oil-immersed 330 kVA unit for an 11kV\/0.4kV service is in the order of 1.5 m long and 1.3 m high to the tank top, with the transport weight roughly between 900 kg and 1,300 kg including oil.<\/p>\n<p>Standard tank finishes are grey (RAL 7032 \/ 7035 style) and green (RAL 6001 \/ 6011 style) for outdoor duty; dry-type enclosures are typically light grey with optional RAL colours for indoor panels. Custom colours, anti-corrosion treatment for coastal sites and nameplate layouts can be specified on the order.<\/p>\n<h3 class=\"subian-semv2-acbr-subtitle\">Enclosure colour 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 (industrial)<\/th>\n<td>standard outdoor tank and dry-type enclosure finish<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Green (utility)<\/th>\n<td>common for pole and pad-mounted distribution units<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Blue \/ black<\/th>\n<td>available for special projects and branding<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Coastal protection<\/th>\n<td>higher-grade paint system for marine environments<\/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 vs Used, Replacement and Delivery<\/h2>\n<p>Buyers searching for a 330 kVA transformer sometimes compare new factory units with used or surplus stock. A new unit carries a fresh test report, the full warranty and a design matched to your network; used stock is cheaper upfront but its remaining life, previous loading and oil condition are uncertain unless fully documented.<\/p>\n<p>For a replacement, keep the failed unit&#8217;s nameplate data &#8211; voltage ratio, vector group, impedance and tapping range &#8211; so the new transformer matches the existing protection settings and installation footprint. If you only have the old drawings, our engineers can work from those.<\/p>\n<p>Delivery is confirmed at quotation: production is scheduled against the approved drawing, and packing, marking and shipping are coordinated to your port or project site, with photographs and documents issued before departure.<\/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\">From Core Steel to a Tested 330 kVA Unit<\/h2>\n<p class=\"subian-semv2-factory-intro\">Core cutting, coil winding, vacuum drying, oil filling or resin casting, assembly and testing are all done in-house, so the 330 kVA unit you receive is traceable from raw material to its test report.<\/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\">Controlled winding tension, layer insulation and core stacking give consistent impedance and loss performance.<\/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=\"Vacuum Drying &amp; Oil Fill\" \/><\/p>\n<h3 class=\"subian-semv2-factory-card-title\">Vacuum Drying &amp; Oil Fill<\/h3>\n<p class=\"subian-semv2-factory-card-text\">Careful drying removes moisture before oil filling, protecting the insulation system for a long service life.<\/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\">Every unit is routine-tested; type-test reports support project approval and market certification.<\/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-final-process.webp\" alt=\"Packing &amp; Delivery\" \/><\/p>\n<h3 class=\"subian-semv2-factory-card-title\">Packing &amp; Delivery<\/h3>\n<p class=\"subian-semv2-factory-card-text\">Transformers are protected, marked and dispatched on a coordinated schedule to the port or site.<\/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\">330 kVA Transformer Price &amp; Factory Quotation<\/h2>\n<p>Ask for the current factory price with your primary voltage, impedance and quantity. We confirm the design on drawings and issue a written quotation with lead time &#8211; single units and container programmes are both supported.<\/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 Transformer Supply<\/h2>\n<p class=\"subian-semv2-head-intro\">Distributors can resell the 330 kVA transformer under their own brand, with private-label nameplates, colour, 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 ratings, tappings and branding built on our standard 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\">Container quantities with mixed ratings and models per shipment.<\/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\">Catalogues, technical support and priority production for channel 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\">Oil-Immersed vs Dry-Type at This Rating<\/h2>\n<p>For outdoor distribution duty the oil-immersed 330 kVA unit offers the lowest cost per kVA, proven reliability and simple maintenance, while needing oil containment and periodic oil checks. The dry-type unit removes oil handling and suits indoor installation, at a higher first cost.<\/p>\n<p>Many buyers compare the 330 kVA transformer against the neighbouring 300 kVA and 400 kVA ratings. Because 330 kVA is not a standard IEC preferred value in every market, the choice is often driven by the utility&#8217;s approved list or by a calculated load close to that figure &#8211; our engineers help you confirm the closest economical rating for your load profile.<\/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 Compare 330 kVA Transformer Suppliers<\/h2>\n<p>Look beyond price per unit. The figures that decide your long-term cost are the no-load and load losses, the core material, whether the windings are copper or aluminium, and the temperature-rise margin under full load.<\/p>\n<p>Check that routine test reports are issued per unit and that type-test evidence exists for the design. Subian publishes its credentials openly: ISO9001, ISO14001, ISO45001, CE and UL certification, a 110 kV transformer type-test report, and a factory you can visit in person or through our VR tour.<\/p>\n<p>A supplier that manufactures rather than trades can also adjust impedance, tappings and bushings for your project &#8211; confirm this before ordering, because catalogue-only sellers cannot.<\/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 transformer production runs under ISO9001, ISO14001 and ISO45001 management systems, with CE and UL certification and type-test evidence to 110 kV class.<\/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=\"\/150-kva-step-down-transformer\/\">150 kVA Step Down Transformer<\/a><\/li>\n<li><a href=\"\/substation-33kv\/\">33kV Substation<\/a><\/li>\n<li><a href=\"\/electric-distribution-transformer-manufacturers\/\">Electric Distribution Transformer Manufacturers<\/a><\/li>\n<li><a href=\"\/distribution-transformer-oil-type-manufacturers\/\">Oil 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\">330 kVA Transformer Manufacturers &amp; Suppliers FAQ<\/h2>\n<p class=\"subian-faq-contact__intro\">Frequently asked questions about the 330 kVA rating, loading and factory sourcing.<\/p>\n<div class=\"subian-faq\">\n<details class=\"subian-faq__item\">\n<summary class=\"subian-faq__question\">What is the load capacity of a 300 kVA transformer?<\/summary>\n<div class=\"subian-faq__answer\">At a typical 0.8 power factor a 300 kVA transformer supplies about 240 kW continuously, and up to 300 kW at unity power factor. Its full-load current at a 400V secondary is roughly 433 A. The 330 kVA rating follows the same calculation at about 264 kW \/ 476 A.<\/div>\n<\/details>\n<details class=\"subian-faq__item\">\n<summary class=\"subian-faq__question\">How much does a 300 kVA transformer cost?<\/summary>\n<div class=\"subian-faq__answer\">The factory price depends mainly on the type (oil-immersed or dry), the primary voltage, the loss specification and the quantity. Because transformer steel and copper prices move, request a current written quotation with your voltage and impedance &#8211; single units and container programmes are priced separately.<\/div>\n<\/details>\n<details class=\"subian-faq__item\">\n<summary class=\"subian-faq__question\">What amperage is a 480V 30 kVA transformer rated for?<\/summary>\n<div class=\"subian-faq__answer\">For a three-phase 480V-to-208Y\/120V 30 kVA transformer, the 208V secondary current is about 83 A and the 480V primary about 36 A. The primary and secondary currents of any kVA rating follow I = kVA x 1000 \/ (1.732 x voltage).<\/div>\n<\/details>\n<details class=\"subian-faq__item\">\n<summary class=\"subian-faq__question\">Is there a 400 kVA transformer?<\/summary>\n<div class=\"subian-faq__answer\">Yes &#8211; 400 kVA is a standard three-phase rating in many markets, usually built as an oil-immersed or dry-type distribution transformer. It sits one step above the 330 kVA \/ 300 kVA class and suits loads around 320 kW at 0.8 power factor.<\/div>\n<\/details>\n<details class=\"subian-faq__item\">\n<summary class=\"subian-faq__question\">What is the difference between kVA and kW on a transformer?<\/summary>\n<div class=\"subian-faq__answer\">kVA is the transformer&#8217;s apparent-power rating &#8211; voltage times current &#8211; while kW is the real power actually delivered to the load, which also depends on the load&#8217;s power factor. A 330 kVA transformer can pass 330 kVA continuously, and delivers kW equal to 330 multiplied by the power factor.<\/div>\n<\/details>\n<details class=\"subian-faq__item\">\n<summary class=\"subian-faq__question\">What does full-load current mean for cable and breaker sizing?<\/summary>\n<div class=\"subian-faq__answer\">Full-load current is the current the transformer passes at its rated kVA on a given voltage side. The LV breaker, busbar and cables are selected for this current plus margin and fault duty; the figures quoted for 400V and 11kV sides above are the starting point for that calculation.<\/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. 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The 330 kVA rating is one of the most requested in our distribution transformer range, built for 6kV to 33kV primary networks with a 400V\/230V [&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-11416","page","type-page","status-publish","hentry"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/subian-electric.com\/it\/wp-json\/wp\/v2\/pages\/11416","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/subian-electric.com\/it\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/subian-electric.com\/it\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/subian-electric.com\/it\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/subian-electric.com\/it\/wp-json\/wp\/v2\/comments?post=11416"}],"version-history":[{"count":1,"href":"https:\/\/subian-electric.com\/it\/wp-json\/wp\/v2\/pages\/11416\/revisions"}],"predecessor-version":[{"id":11417,"href":"https:\/\/subian-electric.com\/it\/wp-json\/wp\/v2\/pages\/11416\/revisions\/11417"}],"wp:attachment":[{"href":"https:\/\/subian-electric.com\/it\/wp-json\/wp\/v2\/media?parent=11416"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}