{"id":36616,"date":"2023-01-04T18:09:02","date_gmt":"2023-01-04T17:09:02","guid":{"rendered":"https:\/\/www.gt-engineering.it\/?post_type=normativa_tecnica&#038;p=36616"},"modified":"2023-06-29T07:15:51","modified_gmt":"2023-06-29T06:15:51","slug":"8-liaison-equipotentielle","status":"publish","type":"normativa_tecnica","link":"https:\/\/www.gt-engineering.it\/fr\/reglements-techniques\/normes-iec\/iec-60204-1-equipement-electrique-des-machines\/8-liaison-equipotentielle\/","title":{"rendered":"8 &#8211; Liaison \u00e9quipotentielle"},"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 flex-col\">\n\n    \n\n                    <div \n                class=\"order-2 relative w-full\"\n            >\n                <div\n                    class=\"pt-6 space-y-6 w-full md:pt-0 md:space-y-4 lg:space-y-8 xl:space-y-9\"\n                >\n                    \n<div class=\"a-text font-text text-base normal mt-8 first:mt-0 space-y-4\">\n    <p><strong>Le chapitre 8<\/strong> de la norme \u00e9nonce les exigences relatives \u00e0 la<strong> liaison de protection et \u00e0 la liaison fonctionnelle.<\/strong> La liaison de protection est une disposition de base pour la protection contre les d\u00e9fauts afin de permettre la protection des personnes contre les chocs \u00e9lectriques.<\/p>\n<p>L&rsquo;objectif de la liaison fonctionnelle est de r\u00e9duire :<br \/>\n&#8211; Les cons\u00e9quences d&rsquo;une d\u00e9faillance de l&rsquo;isolation qui pourrait affecter le fonctionnement de la machine<br \/>\n&#8211; Les perturbations \u00e9lectriques sur les \u00e9quipements \u00e9lectriques sensibles qui pourraient affecter le fonctionnement de la machine ;<br \/>\n&#8211; Les courants induits par la foudre qui pourraient endommager l&rsquo;\u00e9quipement \u00e9lectrique.<\/p>\n<p>La liaison fonctionnelle est r\u00e9alis\u00e9e par connexion aux circuits de liaison de protection, mais lorsque le niveau des perturbations \u00e9lectriques sur le circuit de liaison de protection n&rsquo;est pas suffisamment faible pour assurer le bon fonctionnement du mat\u00e9riel \u00e9lectrique, il peut \u00eatre n\u00e9cessaire <strong>d&rsquo;utiliser une borne d\u00e9di\u00e9e \u00e0 la liaison de protection et une autre \u00e0 la liaison fonctionnelle.<\/strong><\/p>\n<p>Le circuit de liaison de protection, d\u00e9crit au paragraphe<strong> 8.2<\/strong>, consiste en l&rsquo;interconnexion de :<br \/>\n&#8211; Bornes PE ;<br \/>\n&#8211; Les conducteurs de protection dans l&rsquo;\u00e9quipement de la machine ;<br \/>\n&#8211; les parties conductrices de la structure et les parties conductrices expos\u00e9es de l&rsquo;\u00e9quipement \u00e9lectrique. Cela signifie que certaines parties m\u00e9talliques de la machine peuvent \u00eatre utilis\u00e9es comme liaison de protection, m\u00eame si nous ne le recommandons pas !<\/p>\n<\/div>                <\/div>\n            <\/div>\n        \n                    <div\n                class=\"h-auto order-2   mt-6 md:mt-4 lg:mt-8 xl:mt-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\/06\/Capture-6-150x150.png.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 300px)\"\r\n                                width=\"300\"\r\n                                height=\"214\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/06\/Capture-6-300x214.png.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 543px)\"\r\n                                width=\"543\"\r\n                                height=\"388\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/06\/Capture-6.png.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 543px)\"\r\n                                width=\"543\"\r\n                                height=\"388\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/06\/Capture-6.png.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                            <img\r\n                            class=\"a-image transparent border-image h-auto  w-full mx-auto\"\r\n                                                        srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/06\/Capture-6.png.webp\"\r\n                                                        title=\"Capture\"\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>\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        \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>La norme ajoute qu&rsquo;il n&rsquo;est pas n\u00e9cessaire de relier les pi\u00e8ces conductrices expos\u00e9es au circuit de mise \u00e0 la terre de protection lorsque ces pi\u00e8ces sont mont\u00e9es de telle sorte qu&rsquo;elles ne constituent pas un danger parce que :<\/p>\n<p><em>&#8211; Elles ne peuvent pas \u00eatre touch\u00e9es sur de grandes surfaces ou saisies avec la main et elles sont de petite taille (50 mm x 50 mm) ; ou<\/em><br \/>\n<em>&#8211; Elles sont plac\u00e9es de telle sorte qu&rsquo;un contact avec des pi\u00e8ces sous tension ou une d\u00e9faillance de l&rsquo;isolation est improbable.<\/em><\/p>\n<p>Cela s&rsquo;applique aux petites pi\u00e8ces telles que les vis, les rivets et les plaques signal\u00e9tiques, ainsi qu&rsquo;aux pi\u00e8ces situ\u00e9es \u00e0 l&rsquo;int\u00e9rieur d&rsquo;une enceinte, quelle que soit leur taille.<\/p>\n<p><strong>L&rsquo;amendement 2021 de la IEC 60204-1<\/strong> pr\u00e9cise que les \u00ab\u00a0pi\u00e8ces structurelles conductrices de la machine\u00a0\u00bb <strong>ne doivent pas \u00eatre r\u00e9li\u00e9es<\/strong>, sauf s&rsquo;il s&rsquo;agit de pi\u00e8ces conductrices \u00e9trang\u00e8res. Par cons\u00e9quent, <strong>\u00e9vitez de faire comme dans l&rsquo;image au d\u00e9but de la page !<\/strong><\/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>Le chapitre 8 de la norme \u00e9nonce les exigences relatives \u00e0 la liaison de protection et \u00e0 la liaison fonctionnelle. La liaison de protection est une disposition de base pour la protection contre les d\u00e9fauts afin de permettre la protection des personnes contre les chocs \u00e9lectriques.<\/p>\n","protected":false},"author":182,"featured_media":36617,"parent":36544,"menu_order":5,"template":"","meta":{"_acf_changed":false,"footnotes":""},"normative-tecniche":[165],"class_list":["post-36616","normativa_tecnica","type-normativa_tecnica","status-publish","has-post-thumbnail","hentry","tipologia_normativa-normes-iec"],"acf":{"sottotitolo":"","allegati":null},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>8 - Liaison \u00e9quipotentielle - 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-iec\/iec-60204-1-equipement-electrique-des-machines\/8-liaison-equipotentielle\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"8 - Liaison \u00e9quipotentielle - Gt-Engineering\" \/>\n<meta property=\"og:description\" content=\"Le chapitre 8 de la norme \u00e9nonce les exigences relatives \u00e0 la liaison de protection et \u00e0 la liaison fonctionnelle. 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