{"id":37422,"date":"2023-01-05T14:03:34","date_gmt":"2023-01-05T13:03:34","guid":{"rendered":"https:\/\/www.gt-engineering.it\/?post_type=normativa_tecnica&#038;p=37422"},"modified":"2025-08-25T11:36:45","modified_gmt":"2025-08-25T10:36:45","slug":"ul-891-tableaux-de-distribution-tristandard","status":"publish","type":"normativa_tecnica","link":"https:\/\/www.gt-engineering.it\/fr\/reglements-techniques\/normes-americaine\/ul-891-tableaux-de-distribution-tristandard\/","title":{"rendered":"UL 891 : Tableaux de r\u00e9partition, Tristandard"},"content":{"rendered":"\n\n    \n        <section\n            data-name=\"Contenuto testuale con immagine\"\n            class=\"bow-gte-testo-media u-spacer-base\"\n            id=\"\"\n        >\n            \n<div class=\"o-text-media px-side-spacer sm:px-side-spacer-sm lg:px-side-spacer-tablet 2xl:px-side-spacer-desktop flex flex-wrap items-start md:block\">\n\n    \n        \n                    <div\n                class=\"h-auto mb-6 md:mb-4 lg:mb-8 xl:mb-9 float-left mr-6 md:mr-4 lg:mr-8 xl:mr-9  overflow-hidden shadow-content-image w-full md:w-1\/3\"\n            >\n                \r\n\r\n    \r\n        \r\n            \r\n                \r\n                    <picture\r\n                        class=\"\"\r\n                                            >\r\n                                                                                                        <source\r\n                                media=\"(max-width: 150px)\"\r\n                                width=\"150\"\r\n                                height=\"150\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/07\/Fig._2_Eaton_vcpbhj-scaled-1-768x697-1-150x150.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 300px)\"\r\n                                width=\"300\"\r\n                                height=\"272\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/07\/Fig._2_Eaton_vcpbhj-scaled-1-768x697-1-300x272.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 768px)\"\r\n                                width=\"768\"\r\n                                height=\"697\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/07\/Fig._2_Eaton_vcpbhj-scaled-1-768x697-1.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 768px)\"\r\n                                width=\"768\"\r\n                                height=\"697\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/07\/Fig._2_Eaton_vcpbhj-scaled-1-768x697-1.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                            <img\r\n                            class=\"a-image transparent border-image h-auto  w-full\"\r\n                                                        srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/07\/Fig._2_Eaton_vcpbhj-scaled-1-768x697-1.webp\"\r\n                                                        title=\"Fig._2_Eaton_vcpbhj-scaled-1-768&#215;697\"\r\n                                                        type=\"image\/webp\"\r\n                        \/>\r\n                    <\/picture>\r\n\r\n                \r\n\r\n                    \r\n    \r\n            <\/div>\n        \n                    <div class=\"relative w-full\">\n                \n<div class=\"a-text font-text text-base normal mt-8 first:mt-0 space-y-4\">\n    <p>UL 891 est une norme Tristandard. Cela signifie que son contenu est exactement le m\u00eame que celui des trois normes suivantes :<\/p>\n<ul>\n<li>Groupe CSA : CSA C22.2 n\u00b0 244-05.<\/li>\n<li>Underwriters Laboratories Inc : UL 891.<\/li>\n<li>Association de normalisation et de certification : NMX-J-118\/2-ANCE-2012.<\/li>\n<\/ul>\n<p>Les sujets abord\u00e9s sont les tableaux de distribution, \u00e9galement appel\u00e9s en Am\u00e9rique du Nord \u00ab\u00a0dead-front switchboard\u00a0\u00bb. En Europe, les normes \u00e9quivalentes sont les normes EN 61439-1 et EN 61439-2. Toutefois, l&rsquo;approche est diff\u00e9rente. La norme EN 61439 met l&rsquo;accent sur la v\u00e9rification de la conception et les essais de l&rsquo;armoire. La norme UL 891 porte principalement sur la conception des tableaux de distribution.<\/p>\n<p>La norme s&rsquo;applique aux tableaux de distribution dont la tension nominale est inf\u00e9rieure ou \u00e9gale \u00e0 600 V et qui sont destin\u00e9s \u00e0 \u00eatre utilis\u00e9s conform\u00e9ment au code canadien de l&rsquo;\u00e9lectricit\u00e9, partie 1 (code CE, partie 1), au code national de l&rsquo;\u00e9lectricit\u00e9 (NEC), ANSI\/NFPA 70, et \u00e0 la norme mexicaine relative aux installations \u00e9lectriques (service public), NOM-001-SEDE.<br \/>\nCes exigences s&rsquo;appliquent aux tableaux de distribution destin\u00e9s \u00e0 \u00eatre utilis\u00e9s sur des circuits dont les courants de court-circuit sym\u00e9triques efficaces disponibles ne d\u00e9passent pas 200 000 A.<\/p>\n<\/div>            <\/div>\n        \n        \n                <div class=\"clear-both\"><\/div>\n        \n\n    <\/div>\n        <\/section>\n\n    \n\n\n\n\n    \n        <section\n            data-name=\"Contenuto testuale con immagine\"\n            class=\"bow-gte-testo-media u-spacer-base\"\n            id=\"\"\n        >\n            \n<div class=\"o-text-media px-side-spacer sm:px-side-spacer-sm lg:px-side-spacer-tablet 2xl:px-side-spacer-desktop flex flex-wrap items-start md:block\">\n\n    \n                    <div class=\"mb-6 relative w-full md:mb-4 lg:mb-8 xl:mb-9\">\n                \n        <div                class=\"m-headings\"\n            >\n    \n    \n<h2 class=\"a-heading text-left text-primary font-heading text-2xl lg:text-3xl xl:text-4xl font-normal mt-2 first:mt-0\">\n                    Table G3.1    <\/h2>\n        <\/div>\n                <\/div>\n        \n                    <div\n                class=\"h-auto mb-6 md:mb-4 lg:mb-8 xl:mb-9 float-left mr-6 md:mr-4 lg:mr-8 xl:mr-9  overflow-hidden shadow-content-image w-full md:w-3\/4\"\n            >\n                \r\n\r\n    \r\n        \r\n            \r\n                \r\n                    <picture\r\n                        class=\"\"\r\n                                            >\r\n                                                                                                        <source\r\n                                media=\"(max-width: 150px)\"\r\n                                width=\"150\"\r\n                                height=\"150\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/07\/Table-G31-1.png-150x150.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 300px)\"\r\n                                width=\"300\"\r\n                                height=\"186\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/07\/Table-G31-1.png-300x186.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 634px)\"\r\n                                width=\"634\"\r\n                                height=\"394\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/07\/Table-G31-1.png.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 634px)\"\r\n                                width=\"634\"\r\n                                height=\"394\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/07\/Table-G31-1.png.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                            <img\r\n                            class=\"a-image transparent border-image h-auto  w-full\"\r\n                                                        srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/07\/Table-G31-1.png.webp\"\r\n                                                        title=\"Table-G31-1.png\"\r\n                                                        type=\"image\/webp\"\r\n                        \/>\r\n                    <\/picture>\r\n\r\n                \r\n\r\n                    \r\n    \r\n            <\/div>\n        \n                    <div class=\"relative w-full\">\n                \n<div class=\"a-text font-text text-base normal mt-8 first:mt-0 space-y-4\">\n    <p>Il s&rsquo;agit de l&rsquo;un des tableaux les plus importants \u00e0 respecter. Il indique la distance minimale entre les barres omnibus, en fonction du courant de court-circuit d\u00e9clar\u00e9 du tableau de distribution, de l&rsquo;intensit\u00e9 et de la tension nominales.<br \/>\nLes barres omnibus peuvent \u00eatre dispos\u00e9es bord \u00e0 bord (EE) ou face \u00e0 face (FF). Cette disposition est importante car elle modifie la distance minimale entre les barres.<\/p>\n<\/div>            <\/div>\n        \n        \n                <div class=\"clear-both\"><\/div>\n        \n\n    <\/div>\n        <\/section>\n\n    \n","protected":false},"excerpt":{"rendered":"<p>UL 891 est une norme Tristandard. Cela signifie que son contenu est exactement le m\u00eame que celui des trois normes suivantes :<\/p>\n","protected":false},"author":182,"featured_media":50075,"parent":0,"menu_order":12,"template":"","meta":{"_acf_changed":false,"footnotes":""},"normative-tecniche":[167],"class_list":["post-37422","normativa_tecnica","type-normativa_tecnica","status-publish","has-post-thumbnail","hentry","tipologia_normativa-normes-americaine"],"acf":{"sottotitolo":"Le Tristandard de l'Am\u00e9rique du Nord","allegati":null},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>UL 891 : Tableaux de r\u00e9partition, Tristandard - Gt-Engineering<\/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:\/\/www.gt-engineering.it\/fr\/reglements-techniques\/normes-americaine\/ul-891-tableaux-de-distribution-tristandard\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"UL 891 : Tableaux de r\u00e9partition, Tristandard - Gt-Engineering\" \/>\n<meta property=\"og:description\" content=\"UL 891 est une norme Tristandard. 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