{"id":39508,"date":"2023-01-05T14:16:24","date_gmt":"2023-01-05T13:16:24","guid":{"rendered":"https:\/\/www.gt-engineering.it\/?post_type=normativa_tecnica&#038;p=39508"},"modified":"2025-08-18T15:32:40","modified_gmt":"2025-08-18T14:32:40","slug":"ul-508a-demarreurs-combines-traditionnels-en-amerique-du-nord","status":"publish","type":"normativa_tecnica","link":"https:\/\/www.gt-engineering.it\/fr\/reglements-techniques\/normes-americaine\/ul-508a\/ul-508a-demarreurs-combines-traditionnels-en-amerique-du-nord\/","title":{"rendered":"UL 508A &#8211; D\u00e9marreurs combin\u00e9s traditionnels en Am\u00e9rique du Nord"},"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\/PARTENZE-MOTORI-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=\"210\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/07\/PARTENZE-MOTORI-1.png-300x210.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 768px)\"\r\n                                width=\"768\"\r\n                                height=\"537\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/07\/PARTENZE-MOTORI-1.png-768x537.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 1024px)\"\r\n                                width=\"1024\"\r\n                                height=\"716\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/07\/PARTENZE-MOTORI-1.png-1024x716.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\/PARTENZE-MOTORI-1.png.webp\"\r\n                                                        title=\"PARTENZE-MOTORI-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>Aux \u00c9tats-Unis, il existe plusieurs types de d\u00e9marreurs de moteurs (type A, type B, type C, type D, type E et type F) qui diff\u00e8rent en fonction des dispositifs de protection utilis\u00e9s.Le d\u00e9marreur de moteur de type A, par exemple, comprend un <strong>sectionneur manuel<\/strong>, un <strong>fusible<\/strong>, un<strong> contr\u00f4leur de moteur<\/strong> et un <strong>relais de surcharge<\/strong>. Le type A est le seul d\u00e9marreur de moteur \u00e0 n\u00e9cessiter un fusible, qui joue le r\u00f4le de protection magn\u00e9tique et donc de dispositif de protection du circuit de d\u00e9rivation (BCPD), c&rsquo;est-\u00e0-dire le dispositif cens\u00e9 garantir la protection contre les courants de court-circuit et d\u00e9limiter le circuit de d\u00e9rivation.<\/p>\n<p>Le type B, qui n&rsquo;est plus utilis\u00e9 aujourd&rsquo;hui, comprend un <strong>sectionneur manuel<\/strong>, un <strong>protecteur de court-circuit<\/strong>\u00a0 un moteur purement magn\u00e9tique, un <strong>contr\u00f4leur de moteur<\/strong> et un<strong> relais de surcharge<\/strong>.<\/p>\n<p>Le type C, quant \u00e0 lui, diff\u00e8re des types A et B car, au lieu d&rsquo;un <strong>fusible<\/strong> et d&rsquo;un <strong>protecteur de court-circuit moteur<\/strong>, il comprend un <strong>disjoncteur \u00e0 temps inverse<\/strong> qui assure non seulement une protection magn\u00e9tique et thermique, mais aussi la m\u00eame fonction qu&rsquo;un<strong> sectionneur.<\/strong><\/p>\n<p>Le type D, peu utilis\u00e9, comprend un<strong> disjoncteur \u00e0 d\u00e9clenchement instantan\u00e9<\/strong> (qui remplit les <strong>fonctions d&rsquo;un sectionneur<\/strong> et d&rsquo;une <strong>protection contre les courts-circuits<\/strong>), un <strong>contr\u00f4leur de moteur<\/strong> et un <strong>relais de surcharge.<\/strong><\/p>\n<p>Le type E, accept\u00e9 par UL en 1990, est n\u00e9 en tant que contr\u00f4leur de moteur combin\u00e9 autoprot\u00e9g\u00e9 manuel (<strong>sectionneur, relais de surcharge et protection contre les courts-circuits<\/strong> dans le m\u00eame appareil). Aujourd&rsquo;hui, le d\u00e9marreur de moteur de type E comprend \u00e9galement un <strong>contr\u00f4leur de moteur<\/strong>, offrant ainsi un dispositif compact<strong> appel\u00e9 contr\u00f4leur de moteur combin\u00e9 autoprot\u00e9g\u00e9<\/strong>, compos\u00e9 d&rsquo;un <strong>contr\u00f4leur de moteur combin\u00e9 manuel autoprot\u00e9g\u00e9<\/strong> et d&rsquo;un <strong>contr\u00f4leur de moteur.<\/strong><\/p>\n<p>Le type F (accept\u00e9 par UL seulement en 2002) d\u00e9signe le fameux d\u00e9marreur de moteur \u00ab\u00a0europ\u00e9en\u00a0\u00bb, c&rsquo;est-\u00e0-dire un contr\u00f4leur de moteur combin\u00e9 auto-prot\u00e9g\u00e9 manuel + un contr\u00f4leur de moteur s\u00e9par\u00e9. Dans ce cas, la coordination entre le contr\u00f4leur de moteur et la protection \u00e0 l&rsquo;int\u00e9rieur du contr\u00f4leur de moteur manuel autoprot\u00e9g\u00e9 joue un r\u00f4le fondamental en termes de SCCR.<\/p>\n<p>Les d\u00e9finitions adopt\u00e9es dans la norme UL 508A concernant les r\u00f4les jou\u00e9s par les protections sont les suivantes :<\/p>\n<p>PROTECTION CONTRE LES SURCHARGES : protection contre les surcharges, les courts-circuits et les d\u00e9fauts \u00e0 la terre.<br \/>\nPROTECTION CONTRE LES SURCHARGES : protection requise pour les circuits de moteur, dont le but est d&rsquo;\u00e9viter une surchauffe excessive due aux surcharges.<br \/>\nLe terme <strong>\u00ab\u00a0contr\u00f4leur de moteur combin\u00e9\u00a0\u00bb<\/strong> d\u00e9signe la combinaison de dispositifs permettant de d\u00e9connecter le circuit, de prot\u00e9ger le circuit de d\u00e9rivation (court-circuit), de contr\u00f4ler le moteur et de le prot\u00e9ger contre les surcharges. \u00c0 l&rsquo;int\u00e9rieur de l&rsquo;appareil, on trouve<\/p>\n<p>D\u00e9marreur de moteur : combinaison d&rsquo;une protection contre la surchauffe et d&rsquo;un contr\u00f4leur de moteur.<br \/>\nContr\u00f4leur manuel de moteur : combinaison d&rsquo;un relais de surcharge, d&rsquo;un interrupteur de d\u00e9connexion et d&rsquo;une protection contre les courts-circuits.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/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                    Diff\u00e9rence avec les d\u00e9marreurs europ\u00e9ens    <\/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-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\/circuito-controllo.jpg-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=\"175\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/07\/circuito-controllo.jpg-300x175.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 768px)\"\r\n                                width=\"768\"\r\n                                height=\"449\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/07\/circuito-controllo.jpg-768x449.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 1024px)\"\r\n                                width=\"1024\"\r\n                                height=\"599\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/07\/circuito-controllo.jpg-1024x599.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\/circuito-controllo.jpg.webp\"\r\n                                                        title=\"circuito-controllo.jpg\"\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>Dans les d\u00e9marreurs nord-am\u00e9ricains, chaque contr\u00f4leur de moteur d\u00e9sign\u00e9 pour le moteur correspondant est associ\u00e9 \u00e0 un circuit de commande dont le but est de contr\u00f4ler la fermeture et l&rsquo;ouverture de ce contr\u00f4leur de moteur. Cela signifie qu&rsquo;il existe un circuit de commande pour chaque d\u00e9marrage de moteur.<br \/>\nLa solution adopt\u00e9e en Europe, par contre, comprend un syst\u00e8me centralis\u00e9 avec un seul PLC qui contr\u00f4le les contr\u00f4leurs de moteur des diff\u00e9rents d\u00e9marreurs.<\/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>Aux \u00c9tats-Unis, il existe plusieurs types de d\u00e9marreurs de moteurs (type A, type B, type C, type D, type E et type F) qui diff\u00e8rent en fonction des dispositifs de protection utilis\u00e9s.<\/p>\n","protected":false},"author":182,"featured_media":39506,"parent":39459,"menu_order":4,"template":"","meta":{"_acf_changed":false,"footnotes":""},"normative-tecniche":[167],"class_list":["post-39508","normativa_tecnica","type-normativa_tecnica","status-publish","has-post-thumbnail","hentry","tipologia_normativa-normes-americaine"],"acf":{"sottotitolo":"Protections d\u00e9finies par la norme UL 508A et diff\u00e9rents types de d\u00e9marreurs de moteurs choisis en fonction des dispositifs de protection.","allegati":null},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - 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