{"id":39502,"date":"2023-01-05T14:16:05","date_gmt":"2023-01-05T13:16:05","guid":{"rendered":"https:\/\/www.gt-engineering.it\/?post_type=normativa_tecnica&#038;p=39502"},"modified":"2023-07-19T09:12:22","modified_gmt":"2023-07-19T08:12:22","slug":"ul-508a-66-1-acces-au-boitier","status":"publish","type":"normativa_tecnica","link":"https:\/\/www.gt-engineering.it\/fr\/reglements-techniques\/normes-americaine\/ul-508a\/ul-508a-66-1-acces-au-boitier\/","title":{"rendered":"UL 508A &#8211; 66.1 Acc\u00e8s au bo\u00eetier"},"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\/01\/UL-508A-66.1-Enclosure-Access-150x150.jpg\"\r\n                                type=\"image\/jpeg\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 225px)\"\r\n                                width=\"225\"\r\n                                height=\"300\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/01\/UL-508A-66.1-Enclosure-Access-225x300.jpg\"\r\n                                type=\"image\/jpeg\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 768px)\"\r\n                                width=\"768\"\r\n                                height=\"1024\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/01\/UL-508A-66.1-Enclosure-Access-768x1024.jpg\"\r\n                                type=\"image\/jpeg\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 768px)\"\r\n                                width=\"768\"\r\n                                height=\"1024\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/01\/UL-508A-66.1-Enclosure-Access-768x1024.jpg\"\r\n                                type=\"image\/jpeg\"\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\/01\/UL-508A-66.1-Enclosure-Access-scaled.jpg\"\r\n                                                        title=\"UL 508A &#8211; 66.1 Enclosure Access\"\r\n                                                        type=\"image\/jpeg\"\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>Afin de prot\u00e9ger les op\u00e9rateurs et les personnes charg\u00e9es de la maintenance contre le risque de contacts directs (contacts avec des pi\u00e8ces sous tension), la norme propose au fabricant de panneaux trois fa\u00e7ons de concevoir un produit s\u00fbr : nous les appelons \u00ab\u00a0Mode a, b et c\u00a0\u00bb, en r\u00e9f\u00e9rence aux trois paragraphes de l&rsquo;\u00e9dition 2022 de la norme.<\/p>\n<p>&nbsp;<\/p>\n<p>\u00ab\u00a0<strong>Mode a<\/strong>\u00a0\u00bb : Une cl\u00e9 est n\u00e9cessaire pour ouvrir l&rsquo;une des portes : c&rsquo;est autoris\u00e9,<strong> \u00e0 condition que tous les composants \u00e9lectriques mont\u00e9s sur la porte aient au moins une protection IP 1X.<\/strong><\/p>\n<blockquote><p><strong>[UL 508A : 2022] 66.1 Enveloppes<\/strong><br \/>\n[66.1.2 L&rsquo;ouverture d&rsquo;une enceinte (par exemple, l&rsquo;ouverture des portes, couvercles, capots et autres) contenant des pi\u00e8ces sous tension fonctionnant \u00e0 ou au-dessus de 50 volts eff. en courant alternatif ou 60 volts en courant continu, ne doit \u00eatre possible que dans l&rsquo;une ou plusieurs des conditions suivantes :<br \/>\na) l&rsquo;utilisation d&rsquo;une cl\u00e9 ou d&rsquo;un outil est n\u00e9cessaire pour l&rsquo;acc\u00e8s. Les pi\u00e8ces sous tension AII mont\u00e9es \u00e0 l&rsquo;int\u00e9rieur des portes ou des couvercles fonctionnant \u00e0 50 volts eff. ou plus en courant alternatif ou 60 volts en courant continu doivent \u00eatre prot\u00e9g\u00e9es contre tout contact direct involontaire par la conception inh\u00e9rente des composants ou par l&rsquo;application de barri\u00e8res ou d&rsquo;obstacles tels qu&rsquo;une sph\u00e8re de 50 mm (2 po) ne puisse entrer en contact avec aucune pi\u00e8ce sous tension. Un marquage d&rsquo;avertissement doit \u00eatre pr\u00e9vu conform\u00e9ment au point 67.4.3.<\/p><\/blockquote>\n<p>\u00ab\u00a0<strong>Mode b<\/strong>\u00a0\u00bb : il n&rsquo;est pas possible d&rsquo;ouvrir l&rsquo;une des portes avec de l&rsquo;\u00e9nergie \u00e0 l&rsquo;int\u00e9rieur du panneau. <strong>Aucune condition pour les composants install\u00e9s \u00e0 l&rsquo;int\u00e9rieur du panneau<\/strong>.<\/p>\n<blockquote><p>b) Le moyen de d\u00e9connexion alimentant l&rsquo;enceinte est verrouill\u00e9 (m\u00e9caniquement, \u00e9lectriquement ou les deux) avec la (les) porte(s) de l&rsquo;enceinte conform\u00e9ment \u00e0 la section 66.1.3.<\/p><\/blockquote>\n<p>\u00ab\u00a0<strong>Mode c<\/strong>\u00a0\u00bb : Il est possible d&rsquo;ouvrir au moins une des portes sans utiliser de cl\u00e9 ou d&rsquo;outil :<strong> L&rsquo;int\u00e9rieur du panneau doit \u00eatre totalement prot\u00e9g\u00e9 des contacts directs.<\/strong><\/p>\n<blockquote><p>c) L&rsquo;ouverture sans l&rsquo;utilisation d&rsquo;une cl\u00e9 ou d&rsquo;un outil et sans d\u00e9connexion des pi\u00e8ces sous tension n&rsquo;est possible que si toutes les pi\u00e8ces sous tension fonctionnant \u00e0 une tension \u00e9gale ou sup\u00e9rieure \u00e0 50 volts eff. en courant alternatif ou 60 volts en courant continu sont enferm\u00e9es s\u00e9par\u00e9ment ou prot\u00e9g\u00e9es de mani\u00e8re \u00e0 \u00e9viter tout contact avec les pi\u00e8ces sous tension.<\/p><\/blockquote>\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>Afin de prot\u00e9ger les op\u00e9rateurs et les personnes charg\u00e9es de la maintenance contre le risque de contacts directs (contacts avec des pi\u00e8ces sous tension), la norme propose au fabricant de panneaux trois fa\u00e7ons de concevoir un produit s\u00fbr : nous les appelons \u00ab\u00a0Mode a, b et c\u00a0\u00bb, en r\u00e9f\u00e9rence aux trois paragraphes de l&rsquo;\u00e9dition 2022 de la norme.<\/p>\n","protected":false},"author":182,"featured_media":39498,"parent":39459,"menu_order":10,"template":"","meta":{"_acf_changed":false,"footnotes":""},"normative-tecniche":[167],"class_list":["post-39502","normativa_tecnica","type-normativa_tecnica","status-publish","has-post-thumbnail","hentry","tipologia_normativa-normes-americaine"],"acf":{"sottotitolo":"","allegati":null},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - 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