{"id":1467,"date":"2026-07-22T05:33:25","date_gmt":"2026-07-22T05:33:25","guid":{"rendered":"https:\/\/lstransformer.com\/what-are-the-routine-electrical-tests-for-transformers-part-2\/"},"modified":"2026-10-29T06:55:56","modified_gmt":"2026-10-29T06:55:56","slug":"what-are-the-routine-electrical-tests-for-transformers-part-2","status":"publish","type":"post","link":"https:\/\/www.lstransformer.com\/es\/what-are-the-routine-electrical-tests-for-transformers-part-2\/","title":{"rendered":"What are the routine electrical tests for transformers? (Part 2)"},"content":{"rendered":"<h1 style=\"text-align: left;\">What are the routine electrical tests for transformers? (Part 2)<\/h1>\n<p>In the previous article, we introduced three routine electrical tests: voltage ratio test, winding resistance measurement, and insulation resistance and absorption ratio or polarization index measurement. In addition to those mentioned in the previous article, there are three electrical tests introduced below.<\/p>\n<h2><b><span style=\"font-family: Arial;\">Contenido<\/span><\/b><\/h2>\n<h3><em>1. tan\u03b4 measurement<\/em><\/h3>\n<p>The tan\u03b4 measurement determines the degree of insulation moisture absorption and defects in the insulation structure through dielectric loss. The magnitude of the dielectric loss factor tan\u03b4 reflects the energy loss of the insulation material under the action of an electric field. When the insulation is moistened or there are defects, the tan\u03b4 value will increase. By measuring tan\u03b4, insulation problems can be found in time to avoid transformer damage caused by insulation faults.<\/p>\n<h3><em>2. Oil tests<\/em><\/h3>\n<p>Internal faults will affect the properties of the oil. Therefore, through tests such as oil withstand voltage, tan\u03b4, acid value, trace moisture, and gas content in the oil, the internal defects of the transformer can be indirectly reflected. Transformer oil plays the role of insulation and heat dissipation. Conducting various tests on it can understand the internal operating state of the transformer. For example, the oil withstand voltage test can detect the insulation strength of the oil. The tan\u03b4 test can reflect the dielectric loss of the oil. Tests such as acid value, trace moisture, and gas content can judge the aging and moisture absorption degree of the oil.<\/p>\n<h3><em>3. Withstand voltage test and no-load and load tests<\/em><\/h3>\n<p>The withstand voltage test of a transformer can be used to judge the insulation status between phases and to the ground. This test detects the insulation performance of the transformer by applying a high voltage to ensure good insulation under normal operation and fault conditions. The no-load and load tests compare the measured values with the original values to determine whether there are faults such as interlayer and intersegment short circuits in the winding. The no-load test can detect the iron loss and no-load current of the transformer. The load test can detect the copper loss and load current of the transformer. By comparing the differences between the measured values and the original values, it can be judged whether the performance of the winding is normal.<a title=\"Distribuidor, Mayorista de Transformadores de Suministros y los Fabricantes,que se Especializa en los Transformadores de 49 a\u00f1os\" href=\"https:\/\/www.lstransformer.com\/es\/Transformers\/\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" class=\"aligncenter\" title=\"22\" src=\"https:\/\/manage.lstransformer.com\/upload\/news\/1742195587305455.jpg\" alt=\"indefinido\" \/><\/a><\/p>\n<h2><b><span style=\"font-family: Arial;\">En Resumen<\/span><\/b><\/h2>\n<p>In short, the routine electrical tests of transformers detect their performance in many aspects. Through these tests, problems can be found in time to ensure the safe operation of the transformer, extend its service life, and provide strong support for the stability of the power system. Strictly implementing the tests and ensuring the reliable operation of the transformer are of great significance for the development of the power industry.<\/p>\n<h2 style=\"font-weight: bold;\">Contacto<\/h2>\n<p>LuShan, est. En 1975, es un Chino fabricante profesional que se especializa en los transformadores de potencia y reactores de m\u00e1s de 50 a\u00f1os. Los productos principales son <a href=\"https:\/\/www.lstransformer.com\/es\/\">transformador monof\u00e1sico, trif\u00e1sico de transformadores de aislamiento, transformador el\u00e9ctrico, transformador de distribuci\u00f3n, el paso hacia abajo y paso transformador de baja tensi\u00f3n del transformador, transformador de alto voltaje, transformador de control, transformador toroidal, R-transformador con n\u00facleo; DC inductores, CA reactores, filtrado de reactor de l\u00ednea y de carga del reactor, estrangulaciones, el filtrado de los reactores y de los intermedios, de alta frecuencia de los productos<\/a>.<\/p>\n<p>Nuestros transformadores de potencia y reactores son ampliamente utilizados en las 10 \u00e1reas de aplicaci\u00f3n: rapid transit, maquinaria de construcci\u00f3n, energ\u00eda renovable, de fabricaci\u00f3n inteligentes, equipos m\u00e9dicos, la mina de carb\u00f3n de la explosi\u00f3n de la prevenci\u00f3n, el sistema de excitaci\u00f3n, de vac\u00edo, de sinterizaci\u00f3n(horno), aire acondicionado central.<\/p>\n<p>Saber m\u00e1s acerca de transformadores de potencia y reactores: <a href=\"https:\/\/www.lstransformer.com\/es\/\">www.lstransformer.com<\/a>.<\/p>\n<p>Si desea obtener soluciones personalizadas para transformadores o reactores, p\u00f3ngase en contacto con nosotros.<br \/>\nWhatsApp\uff1a+86 13787095096<br \/>\nCorreo electr\u00f3nico: marketing@hnlsdz.com<\/p>","protected":false},"excerpt":{"rendered":"<p>What are the routine electrical tests for transformers? (Part 2) In the previous article, we introduced three routine electrical tests: voltage ratio test, winding resistance measurement, and insulation resistance and absorption ratio or polarization index measurement. In addition to those mentioned in the previous article, there are three electrical tests introduced below. Content 1. tan\u03b4 [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":2174,"comment_status":"closed","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-1467","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 - 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