{"id":39730,"date":"2023-02-21T10:05:44","date_gmt":"2023-02-21T09:05:44","guid":{"rendered":"https:\/\/www.gt-engineering.it\/?post_type=approfondimento&#038;p=39730"},"modified":"2023-08-03T11:44:21","modified_gmt":"2023-08-03T10:44:21","slug":"mise-a-la-terre-des-generateurs-industriels-dans-les-systemes-dg","status":"publish","type":"approfondimento","link":"https:\/\/www.gt-engineering.it\/fr\/approfondissement\/securite-electrique\/mise-a-la-terre-des-generateurs-industriels-dans-les-systemes-dg\/","title":{"rendered":"Mise \u00e0 la terre des g\u00e9n\u00e9rateurs industriels dans les syst\u00e8mes DG"},"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\/02\/thumb400_13Grounging-in-DG.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=\"200\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/02\/thumb400_13Grounging-in-DG.jpg-300x200.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 400px)\"\r\n                                width=\"400\"\r\n                                height=\"267\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/02\/thumb400_13Grounging-in-DG.jpg.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 400px)\"\r\n                                width=\"400\"\r\n                                height=\"267\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/02\/thumb400_13Grounging-in-DG.jpg.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\/02\/thumb400_13Grounging-in-DG.jpg.webp\"\r\n                                                        title=\"thumb400_13Grounging-in-DG.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>De nombreuses installations industrielles existantes ou nouvelles comprennent plusieurs g\u00e9n\u00e9rateurs fonctionnant sur les bus de distribution de l&rsquo;usine au niveau de la moyenne tension. Le type de d\u00e9faut auquel les enroulements du stator sont le plus souvent soumis est un court-circuit \u00e0 la terre.<\/p>\n<p>Ces derni\u00e8res ann\u00e9es, de nombreux incidents ont \u00e9t\u00e9 signal\u00e9s, au cours desquels des g\u00e9n\u00e9rateurs connect\u00e9s \u00e0 des bus ont \u00e9t\u00e9 gravement endommag\u00e9s par des d\u00e9fauts de mise \u00e0 la terre du stator. Des \u00e9tudes r\u00e9centes ont montr\u00e9 que les dommages subis par les g\u00e9n\u00e9rateurs sont davantage dus \u00e0 la contribution du courant de d\u00e9faut \u00e0 la terre provenant du g\u00e9n\u00e9rateur lui-m\u00eame que du syst\u00e8me.<\/p>\n<p>L&rsquo;augmentation significative de ces incidents a alert\u00e9 les utilisateurs et les assureurs. En outre, la mise \u00e0 la terre multiple des sources<br \/>\n\u00e9galement des courants de d\u00e9faut tr\u00e8s \u00e9lev\u00e9s qui causent de graves dommages et des probl\u00e8mes de coordination. Par cons\u00e9quent, une attention particuli\u00e8re doit \u00eatre accord\u00e9e \u00e0 la mise \u00e0 la terre du g\u00e9n\u00e9rateur et \u00e0 la protection contre les d\u00e9fauts \u00e0 la terre.<\/p>\n<p>Il convient de noter que la m\u00e9thode de protection contre les d\u00e9fauts \u00e0 la terre est directement li\u00e9e \u00e0 la m\u00e9thode de mise \u00e0 la terre du syst\u00e8me utilis\u00e9e. De nombreuses d\u00e9cisions, consid\u00e9rations et alternatives doivent \u00eatre soigneusement examin\u00e9es lors de la conception d&rsquo;un syst\u00e8me de mise \u00e0 la terre ad\u00e9quat et fiable afin d&rsquo;accro\u00eetre la s\u00e9curit\u00e9 du personnel, de minimiser les dommages aux \u00e9quipements et d&rsquo;\u00e9viter les interruptions ind\u00e9sirables dans le fonctionnement de l&rsquo;usine.<\/p>\n<p>Il existe plusieurs m\u00e9thodes de mise \u00e0 la terre du neutre, comme la r\u00e9sistance \u00e9lev\u00e9e, la r\u00e9sistance faible ou m\u00eame l&rsquo;absence de mise \u00e0 la terre. Cela d\u00e9pend de l&rsquo;installation utilis\u00e9e dans la centrale o\u00f9 le nouveau g\u00e9n\u00e9rateur est install\u00e9. Il en va de m\u00eame pour le choix du type de protection \u00e0 utiliser : 51G, 51N, 59G, 87G etc&#8230;<\/p>\n<p>GT Engineering peut vous aider dans tous les aspects de la mise \u00e0 la terre du neutre et du meilleur choix du type de protection contre les d\u00e9fauts de masse.<\/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>De nombreuses installations industrielles existantes ou nouvelles comprennent plusieurs g\u00e9n\u00e9rateurs fonctionnant sur les bus de distribution de l&rsquo;usine au niveau de la moyenne tension. Le type de d\u00e9faut auquel les enroulements du stator sont le plus souvent soumis est un court-circuit \u00e0 la terre.<\/p>\n","protected":false},"author":182,"featured_media":39731,"parent":0,"menu_order":71,"template":"","meta":{"_acf_changed":false,"footnotes":""},"tipologia_approfondimento":[158],"class_list":["post-39730","approfondimento","type-approfondimento","status-publish","has-post-thumbnail","hentry","tipologia_approfondimento-securite-electrique"],"acf":{"sottotitolo":"Norme EN 60204-1 VS normes NEC et NFPA 79","allegati":null},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Mise \u00e0 la terre des g\u00e9n\u00e9rateurs industriels dans les syst\u00e8mes DG - 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\/approfondissement\/securite-electrique\/mise-a-la-terre-des-generateurs-industriels-dans-les-systemes-dg\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Mise \u00e0 la terre des g\u00e9n\u00e9rateurs industriels dans les syst\u00e8mes DG - Gt-Engineering\" \/>\n<meta property=\"og:description\" content=\"De nombreuses installations industrielles existantes ou nouvelles comprennent plusieurs g\u00e9n\u00e9rateurs fonctionnant sur les bus de distribution de l&#039;usine au niveau de la moyenne tension. 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