{"id":36122,"date":"2022-11-26T10:33:42","date_gmt":"2022-11-26T02:33:42","guid":{"rendered":"https:\/\/www.upowertek.com\/interface-de-gradation-isolee\/"},"modified":"2022-12-10T13:30:07","modified_gmt":"2022-12-10T05:30:07","slug":"interface-de-gradation-isolee","status":"publish","type":"post","link":"https:\/\/www.upowertek.com\/fr\/interface-de-gradation-isolee\/","title":{"rendered":"Interface de gradation isol\u00e9e"},"content":{"rendered":"\n

Il y a quelques mots cl\u00e9s qui sont assez faciles \u00e0 m\u00e9langer dans l’industrie de l’\u00e9clairage LED comme le signal de gradation PWM et le courant LED PWM, la classe 2 et la classe II, l’alimentation isol\u00e9e et la gradation isol\u00e9e, etc. Cet article se concentrera uniquement sur l’interface de gradation isol\u00e9e.<\/p>\n\n

Gradation isol\u00e9e vs alimentation isol\u00e9e<\/h2>\n\n

La gradation isol\u00e9e signifie que l’interface de gradation est isol\u00e9e \u00e0 la fois de l’entr\u00e9e et de la sortie. Parfois, le signal de gradation est basse tension et s\u00fbr 0-10V ou PWM ou num\u00e9rique avec une tension de cr\u00eate inf\u00e9rieure \u00e0 20V, mais la tension de sortie est une haute tension qui n’est pas s\u00fbre. Mais parfois, le signal de gradation n’est pas s\u00fbr car le gradateur est aliment\u00e9 mais non isol\u00e9 de la tension de la ligne AC, donc pour l’alimentation si l’interface de gradation n’est pas isol\u00e9e de la sortie, l’ensemble du luminaire LED peut \u00eatre dangereux. C’est le contexte de l’adoption de l’interface de gradation isol\u00e9e des pilotes LED.<\/p>\n\n

\"gradation<\/figure>\n\n
<\/div>\n\n

Normalement, pour un pilote de LED \u00e0 entr\u00e9e universelle, la tension d’isolation de l’interface de gradation est requise, comme indiqu\u00e9 dans le tableau ci-dessous.<\/p>\n\n

Unit\u00e9 : Vca<\/th>Saisir<\/th>Production<\/th>Att\u00e9nuation<\/th>Cas<\/th><\/tr><\/thead>
\n Saisir<\/strong>\n <\/td>–<\/td>3750<\/td>3750<\/td>1554<\/td><\/tr>
\n Production<\/strong>\n <\/td>3750<\/td>–<\/td>1554<\/td>1554<\/td><\/tr>
\n Att\u00e9nuation<\/strong>\n <\/td>3750<\/td>1554<\/td>–<\/td>1554<\/td><\/tr>
\n Cas<\/strong>\n <\/td>1554<\/td>1554<\/td>1554<\/td>–<\/td><\/tr><\/tbody><\/table><\/figure>\n\n

Gradation isol\u00e9e vs gradation non isol\u00e9e<\/h2>\n\n

Avant les normes obligatoires d’isolation de l’interface de gradation, toute l’interface de gradation du pilote LED est non isol\u00e9e et partage la m\u00eame r\u00e9f\u00e9rence \u00e9lectrique avec la sortie secondaire LED.<\/p>\n\n

Unit\u00e9 : Vca<\/th>Saisir<\/th>Production<\/th>Att\u00e9nuation<\/th>Cas<\/th><\/tr><\/thead>
\n Saisir<\/strong>\n <\/td>–<\/td>3750<\/td>3750<\/td>1554<\/td><\/tr>
\n Production<\/strong>\n <\/td>3750<\/td>–<\/td>\n \n 0<\/mark>\n <\/strong>\n <\/td>1554<\/td><\/tr>
\n Att\u00e9nuation<\/strong>\n <\/td>3750<\/td>\n \n 0<\/mark>\n <\/strong>\n <\/td>–<\/td>1554<\/td><\/tr>
\n Cas<\/strong>\n <\/td>1554<\/td>1554<\/td>1554<\/td>–<\/td><\/tr><\/tbody><\/table><\/figure>\n\n

Normes relatives \u00e0 la gradation isol\u00e9e<\/h2>\n\n

Suppl\u00e9ment UL8750 SF<\/h3>\n\n

Le suppl\u00e9ment SF a \u00e9t\u00e9 publi\u00e9 dans le cadre de la norme ANSI\/UL 8750 en juillet 2017. En septembre 2017, l’organisme de certification d’UL a mis en place un examen des dossiers de l’industrie pour l’adoption de ce suppl\u00e9ment avec une date d’entr\u00e9e en vigueur le 2 novembre 2020. <\/p>\n\n

\"gradation<\/figure>\n\n
<\/div>\n\n

Chapitre 15.4, CEI 61347-1,2015<\/h3>\n\n

Les normes CEI ont annonc\u00e9 l’exigence d’une gradation isol\u00e9e plus t\u00f4t que UL comme ci-dessous.<\/p>\n\n

\"gradation<\/figure>\n\n
<\/div>\n\n

Sommaire<\/h2>\n\n

La gradation isol\u00e9e est de plus en plus adopt\u00e9e dans l’\u00e9clairage g\u00e9n\u00e9ral, les concepteurs doivent donc comprendre les diff\u00e9rences entre la gradation isol\u00e9e et l’alimentation isol\u00e9e afin de choisir les bons produits pour les luminaires. Pour plus de questions, veuillez nous contacter par sales@upowertek.com.<\/p>\n","protected":false},"excerpt":{"rendered":"

Il y a quelques mots cl\u00e9s qui sont assez faciles \u00e0 m\u00e9langer dans l’industrie de l’\u00e9clairage LED comme le signal de gradation PWM et le courant LED PWM, la classe 2 et la classe II, l’alimentation isol\u00e9e et la gradation isol\u00e9e, etc. Cet article se concentrera uniquement sur l’interface de gradation isol\u00e9e. Gradation isol\u00e9e vs […]<\/p>\n","protected":false},"author":6,"featured_media":36133,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"none","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1500],"tags":[],"class_list":{"0":"post-36122","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-connaissances"},"_links":{"self":[{"href":"https:\/\/www.upowertek.com\/fr\/wp-json\/wp\/v2\/posts\/36122","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.upowertek.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.upowertek.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.upowertek.com\/fr\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.upowertek.com\/fr\/wp-json\/wp\/v2\/comments?post=36122"}],"version-history":[{"count":1,"href":"https:\/\/www.upowertek.com\/fr\/wp-json\/wp\/v2\/posts\/36122\/revisions"}],"predecessor-version":[{"id":36177,"href":"https:\/\/www.upowertek.com\/fr\/wp-json\/wp\/v2\/posts\/36122\/revisions\/36177"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.upowertek.com\/fr\/wp-json\/wp\/v2\/media\/36133"}],"wp:attachment":[{"href":"https:\/\/www.upowertek.com\/fr\/wp-json\/wp\/v2\/media?parent=36122"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.upowertek.com\/fr\/wp-json\/wp\/v2\/categories?post=36122"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.upowertek.com\/fr\/wp-json\/wp\/v2\/tags?post=36122"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}