{"id":1307,"date":"2026-07-22T05:33:10","date_gmt":"2026-07-22T05:33:10","guid":{"rendered":"https:\/\/lstransformer.com\/how-is-the-induced-voltage-withstand-test-for-transformers-conducted\/"},"modified":"2026-09-28T01:01:30","modified_gmt":"2026-09-28T01:01:30","slug":"how-is-the-induced-voltage-withstand-test-for-transformers-conducted","status":"publish","type":"post","link":"https:\/\/www.lstransformer.com\/fr\/how-is-the-induced-voltage-withstand-test-for-transformers-conducted\/","title":{"rendered":"How is the Induced Voltage Withstand Test for Transformers conducted?"},"content":{"rendered":"<h1 style=\"text-align: left;\">How is the Induced Voltage Withstand Test for Transformers conducted?<b><\/b><\/h1>\n<p>The Induced Voltage Withstand Test for fully insulated transformers is conducted by opening the high-voltage winding and applying twice the rated voltage at a frequency of 100-250Hz to the low-voltage winding. Due to the higher frequency, the iron core can ensure twice the induced voltage when unsaturated, thereby testing the insulation performance of winding-to-winding, layer-to-layer, and phase-to-phase. This evaluates the longitudinal insulation level of the transformer.<\/p>\n<p>For transformers with graded insulation, raising the neutral point voltage (supporting it) allows the assessment of the main insulation level. Consequently, the Induced Voltage Withstand Test not only tests the longitudinal insulation but also compensates for the inability of such transformers to undergo an External Withstand Voltage Test, effectively performing an equivalent external test.<\/p>\n<p>In the case of a three-phase transformer with graded insulation, the Induced Voltage Withstand Test typically employs a phase-by-phase induction test method. The non-tested two phases (B, C phases in the diagram) are connected in parallel and grounded at the line end, while the neutral point (0) is raised to approximately 1\/3 of the test voltage. This ensures that the line end of the test phase (A phase in the diagram) meets the requirements of an External Withstand Voltage Test, and the induced voltage of the test phase winding meets the requirements of the induction test.<\/p>\n<p>If such adjustments cannot meet the test requirements, the tap position can be adjusted, or another transformer can be used as a supporting transformer to support the neutral point.<\/p>\n<p>According to the requirements of the new standard, during the induction test, it is necessary to measure the local discharge quantity as well as the starting and extinguishing voltages of local discharge.<\/p>\n<h2 style=\"font-weight: bold;\">Contact<\/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 is the Induced Voltage Withstand Test for Transformers conducted? The Induced Voltage Withstand Test for fully insulated transformers is conducted by opening the high-voltage winding and applying twice the rated voltage at a frequency of 100-250Hz to the low-voltage winding. Due to the higher frequency, the iron core can ensure twice the induced voltage [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":4174,"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-1307","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 is the Induced Voltage Withstand Test for Transformers conducted? - LS power transformer, Line reactor, High-voltage transformer, Oil-immersed transformer-CHANGSHA LUSHAN ELECTRONIC TECHNOLOGY CO.,LTD<\/title>\n<meta name=\"description\" content=\"The Induced Voltage Withstand Test for fully insulated transformers is conducted by opening the high-voltage winding and applying twice the rated voltage at a frequency of 100-250Hz to the low-voltage winding. Due to the higher frequency, the iron core can ensure twice the induced voltage when unsaturated, thereby testing the insulation performance of winding-to-winding, layer-to-layer, and phase-to-phase. 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Due to the higher frequency, the iron core can ensure twice the induced voltage when unsaturated, thereby testing the insulation performance of winding-to-winding, layer-to-layer, and phase-to-phase. 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