{"id":1290,"date":"2026-07-22T05:33:09","date_gmt":"2026-07-22T05:33:09","guid":{"rendered":"https:\/\/lstransformer.com\/how-to-analyze-and-dissect-three-phase-transformers\/"},"modified":"2026-09-30T03:18:42","modified_gmt":"2026-09-30T03:18:42","slug":"how-to-analyze-and-dissect-three-phase-transformers","status":"publish","type":"post","link":"https:\/\/www.lstransformer.com\/fr\/how-to-analyze-and-dissect-three-phase-transformers\/","title":{"rendered":"How to analyze and dissect three-phase transformers?"},"content":{"rendered":"<h1 style=\"text-align: left;\">How to analyze and dissectthree-phasetransformers?<\/h1>\n<p><a title=\"LUSHAN transformer\" href=\"https:\/\/www.lstransformer.com\/fr\/Transformers\/\" target=\"_blank\" rel=\"noopener\"><img fetchpriority=\"high\" decoding=\"async\" class=\"aligncenter\" title=\"141\" src=\"https:\/\/manage.lstransformer.com\/upload\/news\/1742206476787466.jpg\" alt=\"undefined\" width=\"489\" height=\"476\" \/><\/a><\/p>\n<p>A transformer is a device that transforms AC voltage, current, and impedance. When an AC current flows through the primary coil, an alternating magnetic flux is generated in the core (or magnetic core), inducing voltage (or current) in the secondary coil. With the continuous development of the transformer industry, more and more industries and enterprises are using transformers, and more and more enterprises are entering the transformer industry. Transformers are composed of cores (or magnetic cores) and coils, with two or more windings. The winding that is connected to the power source is called the primary winding, and the remaining windings are called secondary windings.<\/p>\n<h3><em>1. Parameters of transformers:<\/em><\/h3>\n<p style=\"padding-left: 40px;\"><strong><span style=\"color: #4874cb;\">(1) Rated power:<\/span> <\/strong>The characteristic sign variable of the current transformer under the frequency and voltage.<\/p>\n<p style=\"padding-left: 40px;\"><strong><span style=\"color: #4874cb;\">(2) Rated voltage:<\/span> <\/strong>The voltage applied to the coil of the transformer. The transformer can work for a long time without exceeding the temperature rise of the output power.<\/p>\n<p style=\"padding-left: 40px;\"><strong><span style=\"color: #4874cb;\">(3) Voltage ratio:<\/span> <\/strong>Refers to the ratio of the high voltage to the secondary voltage of the transformer, with differences between the no-load voltage ratio and the load voltage ratio.<\/p>\n<p style=\"padding-left: 40px;\"><strong><span style=\"color: #4874cb;\">(4) Operating frequency:<\/span> <\/strong>The relationship between the iron loss of the transformer core and the frequency is significant, so the frequency used for design and operation is called the operating frequency.<\/p>\n<p style=\"padding-left: 40px;\"><strong><span style=\"color: #4874cb;\">(5) Efficiency:<\/span> <\/strong>The percentage ratio of the secondary power P2 to the primary power P1. The higher the rated power of the transformer, the higher the efficiency.<\/p>\n<p style=\"padding-left: 40px;\"><strong><span style=\"color: #4874cb;\">(6) No-load loss:<\/span> <\/strong>Refers to the power loss measured at the high side when the secondary of the transformer is open. The main loss is the core loss, followed by the loss caused by the current flowing through the original coil copper resistance (copper loss). This part of the loss is relatively small.<\/p>\n<p style=\"padding-left: 40px;\"><strong><span style=\"color: #4874cb;\">(7) No-load current:<\/span> <\/strong>When the secondary of a three-phase transformer is open, there is still an indefinite current, which is called the no-load current. The no-load current consists of magnetizing current (which generates magnetic flux) and iron loss current (caused by core loss). For a 50Hz current transformer, the no-load current is generally higher than the magnetizing current.<\/p>\n<p style=\"padding-left: 40px;\"><strong><span style=\"color: #4874cb;\">(8) Insulation resistance:<\/span> <\/strong>Represents the insulation performance between the coils of the transformer, between each coil and the core. The insulation resistance is related to the performance of the insulation material used, temperature fluctuations, and the degree of humidity.<\/p>\n<h2 style=\"font-weight: bold;\"><strong>Contact<\/strong><\/h2>\n<p>LuShan, heure de l'est. 1975, est un fabricant professionnel Chinois sp\u00e9cialis\u00e9 dans les transformateurs de puissance et des r\u00e9acteurs de plus de 50 ans. Les produits de pointe sont <a href=\"https:\/\/www.lstransformer.com\/fr\/\">transformateur monophas\u00e9, triphas\u00e9 transformateurs d'isolement, transformateur \u00e9lectrique, transformateur de distribution, l'\u00e9tape vers le bas et d'intensifier le transformateur de basse tension du transformateur, transformateur \u00e0 haute tension, contr\u00f4le de transformateur toro\u00efdal transformateur, transformateur R-core; inductances DC, AC r\u00e9acteurs, le filtrage du r\u00e9acteur, de ligne et de charge du r\u00e9acteur, des bobines, le filtrage du r\u00e9acteur, et interm\u00e9diaire, \u00e0 haute fr\u00e9quence produits<\/a>.<\/p>\n<p>Nos transformateurs de puissance et les r\u00e9acteurs sont largement utilis\u00e9s dans les 10 domaines d'application: transport en commun rapide, les machines de construction, les \u00e9nergies renouvelables, intelligents de fabrication, des \u00e9quipements m\u00e9dicaux, de la mine de charbon de l'explosion de la pr\u00e9vention, de l'excitation du syst\u00e8me, frittage sous vide(four), d'une climatisation centrale.<\/p>\n<p>En savoir plus sur transformateur de puissance et le r\u00e9acteur: <a href=\"https:\/\/www.lstransformer.com\/fr\/\">www.lstransformer.com<\/a>.<\/p>\n<p>Si vous souhaitez obtenir des solutions personnalis\u00e9es pour les transformateurs ou des r\u00e9acteurs, veuillez nous contacter.<br \/>\nWhatsApp\uff1a+86 13787095096<br \/>\nE-mail: marketing@hnlsdz.com<\/p>","protected":false},"excerpt":{"rendered":"<p>How to analyze and dissectthree-phasetransformers? A transformer is a device that transforms AC voltage, current, and impedance. When an AC current flows through the primary coil, an alternating magnetic flux is generated in the core (or magnetic core), inducing voltage (or current) in the secondary coil. With the continuous development of the transformer industry, more [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":4146,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[48],"tags":[],"class_list":["post-1290","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-faq"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>How to analyze and dissect three-phase transformers? - LS power transformer, Line reactor, High-voltage transformer, Oil-immersed transformer-CHANGSHA LUSHAN ELECTRONIC TECHNOLOGY CO.,LTD<\/title>\n<meta name=\"description\" content=\"A transformer is a device that transforms AC voltage, current, and impedance. 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