{"id":2719,"date":"2026-11-10T13:55:00","date_gmt":"2026-11-10T05:55:00","guid":{"rendered":"https:\/\/www.zishengelectric.com\/?post_type=product&#038;p=2719"},"modified":"2026-11-10T13:55:00","modified_gmt":"2026-11-10T05:55:00","slug":"500kva-single-phase-pad-mounted-transformer","status":"publish","type":"product","link":"https:\/\/www.zishengelectric.com\/ru\/product\/500kva-single-phase-pad-mounted-transformer","title":{"rendered":"500kVA Single Phase Pad Mounted Transformer"},"content":{"rendered":"<h2>Product Features<\/h2>\n<ul>\n<li>500kVA Single-Phase Underground Supply<\/li>\n<li>Radial or Loop Feed Interfaces<\/li>\n<li>2,083.3A at 240V Rated Output<\/li>\n<li>Copper or Aluminum Winding Selection<\/li>\n<li>Coordinated Cable Entry and Protection<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" style=\"display: block; max-width: 100%; height: auto;\" title=\"500kVA Single Phase Pad Mounted Transformer\" src=\"https:\/\/www.zishengelectric.com\/wp-content\/uploads\/2026\/11\/167kva-single-phase-pad-mounted-transformer-16x9-1.jpg\" alt=\"Open and closed views of a green single-phase pad-mounted transformer on a white background\" width=\"1328\" height=\"747\" \/><\/p>\n<h2>Product Overview<\/h2>\n<p>A 500kVA single-phase pad-mounted transformer provides a ground-level connection between a medium-voltage underground feeder and a compatible low-voltage service. Capacity is apparent power; usable real power depends on load power factor and the thermal operating conditions. Evaluate diversified demand, motor starting and future expansion before approving the rating.<\/p>\n<h2>Design and Installation<\/h2>\n<p>Coordinate the cabinet outline, foundation footprint, cable entry openings, door clearance and lifting access before civil work. Radial feed serves a terminal connection; loop feed provides incoming and outgoing primary cable interfaces. Switching and isolation capability depend on the specified switch and connectors. Confirm dead-front or live-front construction explicitly rather than treating them as interchangeable.<\/p>\n<h2>Core and Windings<\/h2>\n<p>The core and winding assembly must suit the selected voltage, frequency and guaranteed loss requirements. Copper and aluminum windings are alternatives to be specified at order. Compare measured losses, impedance and temperature-rise requirements alongside conductor material.<\/p>\n<h2>Insulation and Cooling<\/h2>\n<p>ONAN means Oil Natural Air Natural: oil circulates naturally within the transformer and heat dissipates to surrounding air without fans. Alternative fluids require confirmation of material compatibility, thermal limits and the correct cooling designation. BIL, or Basic Impulse Insulation Level, describes lightning-impulse withstand; select the primary and secondary insulation levels separately and coordinate them with surge protection.<\/p>\n<h2>Environmental Conditions<\/h2>\n<p>Provide installation altitude, ambient temperature range, solar exposure, flooding risk, humidity and corrosion conditions. Higher altitude, severe heat or coastal exposure requires engineering review of insulation clearances, thermal rating and enclosure finish. Keep ventilation and operating access clear.<\/p>\n<h2>Standards and Customization<\/h2>\n<p>State the applicable IEEE\/ANSI, CSA or IEC requirements, local utility specification and mandatory efficiency rule in the enquiry. Standards compliance, third-party listing and certification require documents covering the offered design. Specify a single primary connection and secondary service, frequency, tap range, feed arrangement, fluid, enclosure and protection scope in the approved schedule.<\/p>\n<h2>Case 1. Residential Underground Service Coordination<\/h2>\n<h3>Service Requirements<\/h3>\n<p>The residential service design uses a 500kVA single-phase pad-mounted transformer to supply compatible household loads through underground cables. Capacity selection requires a diversified load schedule, motor-starting assessment and review of future heating and vehicle-charging demand.<\/p>\n<table>\n<thead>\n<tr>\n<th>Design Item<\/th>\n<th>Coordination Requirement<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Capacity<\/td>\n<td>500kVA, subject to load and thermal assessment<\/td>\n<\/tr>\n<tr>\n<td>Primary supply<\/td>\n<td>Confirm actual winding voltage and utility grounding arrangement<\/td>\n<\/tr>\n<tr>\n<td>Secondary service<\/td>\n<td>Confirm required voltage and wire arrangement before approval<\/td>\n<\/tr>\n<tr>\n<td>Frequency<\/td>\n<td>Select 50Hz or 60Hz to match the supply<\/td>\n<\/tr>\n<tr>\n<td>Feed arrangement<\/td>\n<td>Radial or loop feed according to the utility network<\/td>\n<\/tr>\n<tr>\n<td>Installation<\/td>\n<td>Outdoor foundation coordinated with cable entries, drainage and access<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><img loading=\"lazy\" decoding=\"async\" style=\"display: block; max-width: 100%; height: auto;\" title=\"Residential Underground Distribution\" src=\"https:\/\/www.zishengelectric.com\/wp-content\/uploads\/2026\/11\/residential-underground-distribution-16x9-1.jpg\" alt=\"Green pad-mounted transformer on a concrete base beside a house\" width=\"1200\" height=\"675\" \/><\/p>\n<h3>Engineering Coordination<\/h3>\n<p>Agree primary connectors, fuse coordination, surge protection and grounding with the utility. Size secondary conductors for the selected voltage, load balance, installation method and voltage drop. Approve the foundation and terminal drawings before site construction.<\/p>\n<h3>Acceptance Planning<\/h3>\n<p>The procurement specification defines routine test records, additional test requirements, witness points, packing restraints and delivery documents. Installation and energization follow the approved drawings, protection schedule and local electrical requirements.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" style=\"display: block; max-width: 100%; height: auto;\" title=\"500kVA Single Phase Pad Mounted Transformer\" src=\"https:\/\/www.zishengelectric.com\/wp-content\/uploads\/2026\/11\/167kva-single-phase-pad-mounted-transformer-16x9-1.jpg\" alt=\"Open and closed views of a green single-phase pad-mounted transformer on a white background\" width=\"1328\" height=\"747\" \/><\/p>","protected":false},"excerpt":{"rendered":"<p>The 500kVA single phase pad mounted transformer from Zisheng Electric serves underground distribution points requiring a higher-capacity single-phase supply. The liquid-filled transformer is installed on an engineered foundation, with enclosed cable connections and access arranged around the utility interface. At 240V, 500kVA corresponds to 2,083.3A; at 480V, rated current is 1,041.7A. Cable bending space, termination capacity, load balance and protection coordination therefore need particular attention. Specify the primary winding voltage, required secondary service and 50Hz or 60Hz operation before design approval. Radial or loop feed, copper or aluminum windings, insulating fluid, taps and accessories are selected for the project. Confirm the final outline, lifting mass, environmental conditions and guaranteed performance before procurement.<\/p>","protected":false},"featured_media":2720,"template":"","meta":{"themepark_post_bcolor":"#f5f5f5","themepark_post_width":"1022px","themepark_post_img":"","themepark_post_img_po":"left","themepark_post_img_re":false,"themepark_post_img_cover":false,"themepark_post_img_fixed":false,"themepark_post_hide_title":false,"themepark_post_main_b":"","themepark_post_main_p":100,"themepark_paddingblock":false},"product_brand":[],"product_cat":[73,20],"product_tag":[],"class_list":["post-2719","product","type-product","status-publish","has-post-thumbnail","product_cat-pad-mounted-transformer","product_cat-uncategorized","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/www.zishengelectric.com\/ru\/wp-json\/wp\/v2\/product\/2719","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.zishengelectric.com\/ru\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.zishengelectric.com\/ru\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.zishengelectric.com\/ru\/wp-json\/wp\/v2\/media\/2720"}],"wp:attachment":[{"href":"https:\/\/www.zishengelectric.com\/ru\/wp-json\/wp\/v2\/media?parent=2719"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.zishengelectric.com\/ru\/wp-json\/wp\/v2\/product_brand?post=2719"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.zishengelectric.com\/ru\/wp-json\/wp\/v2\/product_cat?post=2719"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.zishengelectric.com\/ru\/wp-json\/wp\/v2\/product_tag?post=2719"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}