{"id":13182,"date":"2024-10-11T10:19:25","date_gmt":"2024-10-11T08:19:25","guid":{"rendered":"https:\/\/calcul-electrique.com\/sin-categorizar\/demasiada-tension-termica-en-el-conductor-de-fase\/"},"modified":"2024-12-23T13:59:02","modified_gmt":"2024-12-23T12:59:02","slug":"demasiada-tension-termica-en-el-conductor-de-fase","status":"publish","type":"post","link":"https:\/\/calcul-electrique.com\/es\/faq-elec-calc-es\/demasiada-tension-termica-en-el-conductor-de-fase\/","title":{"rendered":"Demasiada tensi\u00f3n t\u00e9rmica en el conductor de fase"},"content":{"rendered":"\n<div class=\"wp-block-uagb-container uagb-block-36487dc3 alignfull uagb-is-root-container\"><div class=\"uagb-container-inner-blocks-wrap\">\n<div class=\"wp-block-uagb-container uagb-block-fd17fc7a\">\n<div class=\"wp-block-uagb-container uagb-block-9d42b2c7\">\n<div class=\"wp-block-uagb-advanced-heading uagb-block-e514becd\"><h5 class=\"uagb-heading-text\">Art\u00edculo 434.5.2 de la norma NF C 15-100 :<\/h5><\/div>\n\n\n\n<p class=\"nc-justify-text\" style=\"margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding-top:0;padding-right:0;padding-bottom:0;padding-left:0\">El tiempo de corte de cualquier corriente resultante de un cortocircuito que se produzca en cualquier punto del circuito no debe superar el tiempo necesario para que la temperatura de los conductores alcance el l\u00edmite admisible.  <\/p>\n\n\n\n<p class=\"nc-justify-text\" style=\"margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding-top:0;padding-right:0;padding-bottom:0;padding-left:0\">Para cortocircuitos de hasta 5 s de duraci\u00f3n, el tiempo necesario para que una corriente de cortocircuito eleve la temperatura de los conductores desde la temperatura m\u00e1xima admisible en servicio normal hasta el valor l\u00edmite puede calcularse, como primera aproximaci\u00f3n, mediante la siguiente f\u00f3rmula :  <\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-uagb-container uagb-block-ee321cc1\">\n<div class=\"wp-block-uagb-image uagb-block-9f9d3674 wp-block-uagb-image--layout-default wp-block-uagb-image--effect-static wp-block-uagb-image--align-none\"><figure class=\"wp-block-uagb-image__figure\"><img decoding=\"async\" srcset=\"https:\/\/calcul-electrique.com\/wp-content\/uploads\/2024\/01\/Formule.png ,https:\/\/calcul-electrique.com\/wp-content\/uploads\/2024\/01\/Formule.png 780w, https:\/\/calcul-electrique.com\/wp-content\/uploads\/2024\/01\/Formule.png 360w\" sizes=\"auto, (max-width: 480px) 150px\" src=\"https:\/\/calcul-electrique.com\/wp-content\/uploads\/2024\/01\/Formule.png\" alt=\"\" class=\"uag-image-4715\" width=\"208\" height=\"55\" title=\"F\u00f3rmula\" loading=\"lazy\" role=\"img\"><\/figure><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-uagb-container uagb-block-6900450d\">\n<p class=\"nc-justify-text\" style=\"margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding-top:0;padding-right:0;padding-bottom:0;padding-left:0\">D\u00f3nde:  <\/p>\n\n\n\n<div class=\"wp-block-uagb-icon-list uagb-block-d5207f78\"><div class=\"uagb-icon-list__wrap\">\n<div class=\"wp-block-uagb-icon-list-child uagb-block-dfe13fbc nc-justify-text\"><span class=\"uagb-icon-list__source-wrap\"><svg xmlns=\"https:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 256 512\"><path d=\"M64 448c-8.188 0-16.38-3.125-22.62-9.375c-12.5-12.5-12.5-32.75 0-45.25L178.8 256L41.38 118.6c-12.5-12.5-12.5-32.75 0-45.25s32.75-12.5 45.25 0l160 160c12.5 12.5 12.5 32.75 0 45.25l-160 160C80.38 444.9 72.19 448 64 448z\"><\/path><\/svg><\/span><span class=\"uagb-icon-list__label\"><strong>t<\/strong> es la duraci\u00f3n en segundos<\/span><\/div>\n\n\n\n<div class=\"wp-block-uagb-icon-list-child uagb-block-1b3e47de nc-justify-text\"><span class=\"uagb-icon-list__source-wrap\"><svg xmlns=\"https:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 256 512\"><path d=\"M64 448c-8.188 0-16.38-3.125-22.62-9.375c-12.5-12.5-12.5-32.75 0-45.25L178.8 256L41.38 118.6c-12.5-12.5-12.5-32.75 0-45.25s32.75-12.5 45.25 0l160 160c12.5 12.5 12.5 32.75 0 45.25l-160 160C80.38 444.9 72.19 448 64 448z\"><\/path><\/svg><\/span><span class=\"uagb-icon-list__label\"><strong>S<\/strong> es el \u00e1rea de la secci\u00f3n transversal en mm\u00b2.<\/span><\/div>\n\n\n\n<div class=\"wp-block-uagb-icon-list-child uagb-block-de63382c nc-justify-text\"><span class=\"uagb-icon-list__source-wrap\"><svg xmlns=\"https:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 256 512\"><path d=\"M64 448c-8.188 0-16.38-3.125-22.62-9.375c-12.5-12.5-12.5-32.75 0-45.25L178.8 256L41.38 118.6c-12.5-12.5-12.5-32.75 0-45.25s32.75-12.5 45.25 0l160 160c12.5 12.5 12.5 32.75 0 45.25l-160 160C80.38 444.9 72.19 448 64 448z\"><\/path><\/svg><\/span><span class=\"uagb-icon-list__label\"><strong>I<\/strong> es la corriente de cortocircuito efectiva en A, expresada como valor eficaz (llamada<strong> <sub>Ik<\/sub> en <\/strong>la gu\u00eda UTE C 15-105)  <\/span><\/div>\n\n\n\n<div class=\"wp-block-uagb-icon-list-child uagb-block-32f07e74 nc-justify-text\"><span class=\"uagb-icon-list__source-wrap\"><svg xmlns=\"https:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 256 512\"><path d=\"M64 448c-8.188 0-16.38-3.125-22.62-9.375c-12.5-12.5-12.5-32.75 0-45.25L178.8 256L41.38 118.6c-12.5-12.5-12.5-32.75 0-45.25s32.75-12.5 45.25 0l160 160c12.5 12.5 12.5 32.75 0 45.25l-160 160C80.38 444.9 72.19 448 64 448z\"><\/path><\/svg><\/span><span class=\"uagb-icon-list__label\"><strong>k<\/strong> = factor que tiene en cuenta la resistividad, el coeficiente de temperatura y el comportamiento de aumento de temperatura del material conductor, as\u00ed como las temperaturas iniciales finales. Para los aislamientos conductores m\u00e1s comunes, los valores de <strong>k<\/strong> para los conductores de fase se indican en <strong>la tabla 43A <\/strong>siguiente: <\/span><\/div>\n<\/div><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-uagb-container uagb-block-305e6433\">\n<div class=\"wp-block-uagb-image uagb-block-856d5001 wp-block-uagb-image--layout-default wp-block-uagb-image--effect-static wp-block-uagb-image--align-none\"><figure class=\"wp-block-uagb-image__figure\"><img decoding=\"async\" srcset=\"https:\/\/calcul-electrique.com\/wp-content\/uploads\/2024\/10\/43A.png ,https:\/\/calcul-electrique.com\/wp-content\/uploads\/2024\/10\/43A.png 780w, https:\/\/calcul-electrique.com\/wp-content\/uploads\/2024\/10\/43A.png 360w\" sizes=\"auto, (max-width: 480px) 150px\" src=\"https:\/\/calcul-electrique.com\/wp-content\/uploads\/2024\/10\/43A.png\" alt=\"\" class=\"uag-image-4768\" width=\"1164\" height=\"393\" title=\"43A\" loading=\"lazy\" role=\"img\"><\/figure><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-uagb-container uagb-block-e1977720\">\n<div class=\"wp-block-uagb-image aligncenter uagb-block-ec87960b wp-block-uagb-image--layout-default wp-block-uagb-image--effect-static wp-block-uagb-image--align-center\"><figure class=\"wp-block-uagb-image__figure\"><img decoding=\"async\" srcset=\"https:\/\/calcul-electrique.com\/wp-content\/uploads\/2024\/01\/Notes.png ,https:\/\/calcul-electrique.com\/wp-content\/uploads\/2024\/01\/Notes.png 780w, https:\/\/calcul-electrique.com\/wp-content\/uploads\/2024\/01\/Notes.png 360w\" sizes=\"auto, (max-width: 480px) 150px\" src=\"https:\/\/calcul-electrique.com\/wp-content\/uploads\/2024\/01\/Notes.png\" alt=\"\" class=\"uag-image-4735\" width=\"1164\" height=\"255\" title=\"Notas\" loading=\"lazy\" role=\"img\"><\/figure><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-uagb-container uagb-block-53189495\">\n<div class=\"wp-block-uagb-advanced-heading uagb-block-8fc1ba9d\"><h5 class=\"uagb-heading-text\">En elec calc\u2122 :<\/h5><\/div>\n\n\n\n<p class=\"nc-justify-text\" style=\"margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding-top:0;padding-right:0;padding-bottom:0;padding-left:0\">La tensi\u00f3n t\u00e9rmica admisible de un cable es su capacidad para soportar una corriente de circuito durante su tiempo de eliminaci\u00f3n sin que se da\u00f1e el aislamiento.<\/p>\n\n\n\n<p class=\"nc-justify-text\" style=\"margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding-top:0;padding-right:0;padding-bottom:0;padding-left:0\">El valor de la tensi\u00f3n t\u00e9rmica se expresa en A\u00b2.s (I\u00b2t)<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-uagb-container uagb-block-3f55f6ae\">\n<div class=\"wp-block-uagb-image aligncenter uagb-block-73e6c868 wp-block-uagb-image--layout-default wp-block-uagb-image--effect-static wp-block-uagb-image--align-center\"><figure class=\"wp-block-uagb-image__figure\"><img decoding=\"async\" srcset=\"https:\/\/calcul-electrique.com\/wp-content\/uploads\/2024\/01\/Image-1.png ,https:\/\/calcul-electrique.com\/wp-content\/uploads\/2024\/01\/Image-1.png 780w, https:\/\/calcul-electrique.com\/wp-content\/uploads\/2024\/01\/Image-1.png 360w\" sizes=\"auto, (max-width: 480px) 150px\" src=\"https:\/\/calcul-electrique.com\/wp-content\/uploads\/2024\/01\/Image-1.png\" alt=\"\" class=\"uag-image-4740\" width=\"690\" height=\"193\" title=\"Imagen 1\" loading=\"lazy\" role=\"img\"><\/figure><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-uagb-container uagb-block-5c539d19\">\n<p class=\"nc-justify-text\" style=\"margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding-top:0;padding-right:0;padding-bottom:0;padding-left:0\">A falta de una referencia del fabricante aguas arriba del conductor, el esfuerzo t\u00e9rmico sobre el conductor se calcula en funci\u00f3n de la corriente m\u00e1xima de cortocircuito vista por el cable y del tiempo de apertura del interruptor: I\u00b2 x t (I en A y t en s).<\/p>\n\n\n\n<p class=\"nc-justify-text\" style=\"margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding-top:0;padding-right:0;padding-bottom:0;padding-left:0\">Este valor debe ser inferior a la resistencia t\u00e9rmica del cable: k\u00b2xS\u00b2.<\/p>\n\n\n\n<p class=\"nc-justify-text\" style=\"margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding-top:0;padding-right:0;padding-bottom:0;padding-left:0\">D\u00f3nde:  <\/p>\n\n\n\n<div class=\"wp-block-uagb-icon-list uagb-block-7676eedd\"><div class=\"uagb-icon-list__wrap\">\n<div class=\"wp-block-uagb-icon-list-child uagb-block-8d96cb3e nc-justify-text\"><span class=\"uagb-icon-list__source-wrap\"><svg xmlns=\"https:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 256 512\"><path d=\"M64 448c-8.188 0-16.38-3.125-22.62-9.375c-12.5-12.5-12.5-32.75 0-45.25L178.8 256L41.38 118.6c-12.5-12.5-12.5-32.75 0-45.25s32.75-12.5 45.25 0l160 160c12.5 12.5 12.5 32.75 0 45.25l-160 160C80.38 444.9 72.19 448 64 448z\"><\/path><\/svg><\/span><span class=\"uagb-icon-list__label\"><strong>S<\/strong> es la secci\u00f3n del conductor en mm\u00b2.<\/span><\/div>\n\n\n\n<div class=\"wp-block-uagb-icon-list-child uagb-block-d707c2cb nc-justify-text\"><span class=\"uagb-icon-list__source-wrap\"><svg xmlns=\"https:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 256 512\"><path d=\"M64 448c-8.188 0-16.38-3.125-22.62-9.375c-12.5-12.5-12.5-32.75 0-45.25L178.8 256L41.38 118.6c-12.5-12.5-12.5-32.75 0-45.25s32.75-12.5 45.25 0l160 160c12.5 12.5 12.5 32.75 0 45.25l-160 160C80.38 444.9 72.19 448 64 448z\"><\/path><\/svg><\/span><span class=\"uagb-icon-list__label\"><strong>k<\/strong> es un coeficiente calculado seg\u00fan el ap\u00e9ndice B de la norma NF C 15-500 y que tambi\u00e9n figura en las distintas tablas del mismo ap\u00e9ndice B.<\/span><\/div>\n<\/div><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-uagb-container uagb-block-8ef24d09\">\n<div class=\"wp-block-uagb-advanced-heading uagb-block-ada632fe\"><h5 class=\"uagb-heading-text\">\u00bfCu\u00e1l es la soluci\u00f3n? Integrar una referencia del fabricante en el interruptor aguas arriba: <\/h5><\/div>\n\n\n\n<p class=\"nc-justify-text\" style=\"margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding-top:0;padding-right:0;padding-bottom:0;padding-left:0\">Para evitar sobredimensionar la secci\u00f3n del cable, los fabricantes incorporan un efecto limitador en la mayor\u00eda de las protecciones.  <\/p>\n\n\n\n<p class=\"nc-justify-text\" style=\"margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding-top:0;padding-right:0;padding-bottom:0;padding-left:0\">La limitaci\u00f3n se lee directamente de la curva del fabricante de la protecci\u00f3n anterior (interruptor autom\u00e1tico o fusible): <strong>la curva de limitaci\u00f3n de energ\u00eda<\/strong>. Define el esfuerzo t\u00e9rmico m\u00e1ximo soportado por el conductor, en funci\u00f3n de la corriente m\u00e1xima de cortocircuito que circula por la tuber\u00eda. <\/p>\n\n\n\n<div class=\"wp-block-uagb-container uagb-block-731290fd\">\n<div class=\"wp-block-uagb-image aligncenter uagb-block-d2db6174 wp-block-uagb-image--layout-default wp-block-uagb-image--effect-static wp-block-uagb-image--align-center\"><figure class=\"wp-block-uagb-image__figure\"><img decoding=\"async\" srcset=\"https:\/\/calcul-electrique.com\/wp-content\/uploads\/2024\/01\/Courbes-1.png ,https:\/\/calcul-electrique.com\/wp-content\/uploads\/2024\/01\/Courbes-1.png 780w, https:\/\/calcul-electrique.com\/wp-content\/uploads\/2024\/01\/Courbes-1.png 360w\" sizes=\"auto, (max-width: 480px) 150px\" src=\"https:\/\/calcul-electrique.com\/wp-content\/uploads\/2024\/01\/Courbes-1.png\" alt=\"\" class=\"uag-image-4758\" width=\"707\" height=\"326\" title=\"Curvas\" loading=\"lazy\" role=\"img\"><\/figure><\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-uagb-container uagb-block-eba35bed\">\n<div class=\"wp-block-uagb-advanced-heading uagb-block-9fc2743e\"><h5 class=\"uagb-heading-text\">Interpretaci\u00f3n de los valores de tensi\u00f3n t\u00e9rmica en elec calc\u2122 :  <\/h5><\/div>\n\n\n\n<div class=\"wp-block-uagb-container uagb-block-3c2a5e2f\">\n<div class=\"wp-block-uagb-image aligncenter uagb-block-d57ad3c7 wp-block-uagb-image--layout-default wp-block-uagb-image--effect-static wp-block-uagb-image--align-center\"><figure class=\"wp-block-uagb-image__figure\"><img decoding=\"async\" srcset=\"https:\/\/calcul-electrique.com\/wp-content\/uploads\/2024\/01\/Image-last.png ,https:\/\/calcul-electrique.com\/wp-content\/uploads\/2024\/01\/Image-last.png 780w, https:\/\/calcul-electrique.com\/wp-content\/uploads\/2024\/01\/Image-last.png 360w\" sizes=\"auto, (max-width: 480px) 150px\" src=\"https:\/\/calcul-electrique.com\/wp-content\/uploads\/2024\/01\/Image-last.png\" alt=\"\" class=\"uag-image-4750\" width=\"1164\" height=\"253\" title=\"\u00daltima imagen\" loading=\"lazy\" role=\"img\"><\/figure><\/div>\n<\/div>\n\n\n\n<p class=\"nc-justify-text has-black-color has-text-color has-link-color wp-elements-c59a16ef6b75908f0cf4f4569fe91ebf\" style=\"margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding-top:0;padding-right:0;padding-bottom:0;padding-left:0\"><strong> &gt; Si<\/strong> <strong>i\u00b2t k\u00b2s\u00b2 <\/strong>, aparece una anomal\u00eda de tensi\u00f3n t\u00e9rmica en el cable.  <\/p>\n\n\n\n<p class=\"nc-justify-text has-black-color has-text-color has-link-color wp-elements-635f7d4bb5d23a8b2637f0df8b7d9089\" style=\"margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding-top:0;padding-right:0;padding-bottom:0;padding-left:0\">Para m\u00e1s informaci\u00f3n, consulta este art\u00edculo sobre la <a href=\"https:\/\/calcul-electrique.com\/articles\/technique\/la-verification-des-contraintes-thermiques-dans-un-conducteur\/\">comprobaci\u00f3n de las tensiones t\u00e9rmicas en un conductor<\/a>.<\/p>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-uagb-container uagb-block-0b867a31\">\n<p style=\"margin-top:0;margin-bottom:0\">Tambi\u00e9n puedes encontrar el tutorial sobre restricciones t\u00e9rmicas m\u00e1s abajo:<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-uagb-container uagb-block-43bcf400\">\n<figure class=\"wp-block-embed aligncenter is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\" style=\"margin-top:0;margin-right:0;margin-bottom:0;margin-left:0\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Tutoriel de formation elec calc\u2122 : La gestion des contraintes Thermiques\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/VN7-dLoK_x0?start=1&#038;feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n<\/div>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Art\u00edculo 434.5.2 de la norma NF C 15-100 : El tiempo de corte de cualquier corriente resultante de un cortocircuito que se produzca en cualquier punto del circuito no debe superar el tiempo necesario para que la temperatura de los conductores alcance el l\u00edmite admisible. Para cortocircuitos de hasta 5 s de duraci\u00f3n, el tiempo [&hellip;]<\/p>\n","protected":false},"author":13,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"wp-custom-template-publications-2","format":"standard","meta":{"_uag_custom_page_level_css":"","_swt_meta_header_display":false,"_swt_meta_footer_display":false,"_swt_meta_site_title_display":false,"_swt_meta_sticky_header":false,"_swt_meta_transparent_header":false,"footnotes":""},"categories":[201,200],"tags":[],"class_list":["post-13182","post","type-post","status-publish","format-standard","hentry","category-calculo","category-faq-elec-calc-es"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Demasiada tensi\u00f3n t\u00e9rmica en el conductor de fase - Calcul \u00e9lectrique<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/calcul-electrique.com\/es\/faq-elec-calc-es\/demasiada-tension-termica-en-el-conductor-de-fase\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Demasiada tensi\u00f3n t\u00e9rmica en el conductor de fase - Calcul \u00e9lectrique\" \/>\n<meta property=\"og:description\" content=\"Art\u00edculo 434.5.2 de la norma NF C 15-100 : El tiempo de corte de cualquier corriente resultante de un cortocircuito que se produzca en cualquier punto del circuito no debe superar el tiempo necesario para que la temperatura de los conductores alcance el l\u00edmite admisible. 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