{"id":525,"date":"2024-08-17T11:25:36","date_gmt":"2024-08-17T09:25:36","guid":{"rendered":"https:\/\/gezhi-tech.com\/?p=525"},"modified":"2025-09-27T17:50:23","modified_gmt":"2025-09-27T15:50:23","slug":"clause-3-how-to-understand-the-definition-of-class-ii-appliance","status":"publish","type":"post","link":"https:\/\/gezhi-tech.com\/fr\/clause-3-how-to-understand-the-definition-of-class-ii-appliance\/","title":{"rendered":"Clause 3 \u2013 Comment comprendre la d\u00e9finition d\u2019un \u00ab appareil de classe II \u00bb"},"content":{"rendered":"appareil de classe II\u00a0: appareil dans lequel la protection contre les chocs \u00e9lectriques ne repose pas <strong>isolation de base <\/strong>uniquement mais dans lequel des pr\u00e9cautions de s\u00e9curit\u00e9 suppl\u00e9mentaires sont fournies, telles que <strong>double isolation <\/strong>ou <strong>isolation renforc\u00e9e<\/strong>, aucune disposition n&#8217;\u00e9tant pr\u00e9vue pour une mise \u00e0 la terre de protection ou une d\u00e9pendance aux conditions d&#8217;installation. <br><em>REMARQUE 1 Un tel appareil peut \u00eatre de l&#8217;un des types suivants\u00a0:<br>\u2013 un appareil ayant une enceinte durable et sensiblement continue en mat\u00e9riau isolant qui enveloppe toutes les pi\u00e8ces m\u00e9talliques, \u00e0 l&#8217;exception des pi\u00e8ces, telles que les plaques signal\u00e9tiques, les vis et les rivets, qui sont isol\u00e9es de <strong>pi\u00e8ces sous tension <\/strong>par une isolation au moins \u00e9quivalente \u00e0 <strong>isolation renforc\u00e9e<\/strong>; un tel appareil est appel\u00e9 un isolantencasted <strong>appareil de classe II<\/strong>;<br>\u2013 un appareil ayant une enceinte m\u00e9tallique sensiblement continue, dans lequel <strong>double isolation <\/strong>ou <strong>isolation renforc\u00e9e <\/strong>est utilis\u00e9 partout\u00a0; un tel appareil est appel\u00e9 un appareil \u00e0 enveloppe m\u00e9tallique <strong>appareil de classe II<\/strong>;<br>\u2013 un appareil qui est une combinaison d&#8217;un appareil \u00e0 enveloppe isolante <strong>appareil de classe II <\/strong>et un bo\u00eetier m\u00e9tallique <strong>appareil de classe II<\/strong>.<br>REMARQUE 2 L&#8217;enceinte d&#8217;un bo\u00eetier isol\u00e9 <strong>appareil de classe II <\/strong>peut former une partie ou la totalit\u00e9 du <strong>isolation suppl\u00e9mentaire <\/strong>ou du <strong>isolation renforc\u00e9e<\/strong>.<\/em><br>\nIci, nous pensons dans la perspective de doubles pr\u00e9cautions. En plus de l&#8217;isolation de base, le produit a \u00e9galement besoin d&#8217;une autre couche d&#8217;isolation, c&#8217;est-\u00e0-dire de mesures de double isolation pour garantir qu&#8217;en cas de d\u00e9faillance d&#8217;une couche d&#8217;isolation, une autre couche d&#8217;isolation jouera toujours un r\u00f4le de protection. L&#8217;effet anti-choc \u00e9lectrique de l&#8217;isolation renforc\u00e9e \u00e9quivaut dans la plupart des cas \u00e0 une double isolation, elle est donc \u00e9galement consid\u00e9r\u00e9e comme un moyen efficace de double pr\u00e9caution. Les appareils de classe II d\u00e9finis par la norme soulignent principalement que l&#8217;appareil obtient l&#8217;effet de double isolation gr\u00e2ce \u00e0 son propre bo\u00eetier, ses fils isol\u00e9s et ses gaines de fils isol\u00e9s. Les appareils dot\u00e9s de mesures de mise \u00e0 la terre sont des appareils de classe I, les appareils de classe II n&#8217;ont donc pas de mise \u00e0 la terre de protection.<br><br>\u00c0 l&#8217;exception des appareils de classe 0, tous les appareils dot\u00e9s d&#8217;un bo\u00eetier en plastique ou isolant de grande surface sont g\u00e9n\u00e9ralement con\u00e7us comme des appareils de classe II. Cependant, il existe \u00e9galement certains moteurs avec un bo\u00eetier m\u00e9tallique. Bien que le produit puisse r\u00e9pondre aux exigences des appareils de classe II, il existe toujours une mesure de mise \u00e0 la terre de protection sur le moteur. Cet appareil est consid\u00e9r\u00e9 comme un appareil de classe I. Les notes de cette clause donnent une introduction aux caract\u00e9ristiques structurelles de tous les appareils possibles de classe II.<br>\n<figure class=\"wp-block-image size-full\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"778\" height=\"378\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/08\/class-II-appliance-1.png\" alt=\"\" class=\"wp-image-496\" srcset=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/08\/class-II-appliance-1.png 778w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/08\/class-II-appliance-1-300x146.png 300w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/08\/class-II-appliance-1-768x373.png 768w\" sizes=\"auto, (max-width: 778px) 100vw, 778px\" \/><br>\n<\/figure><br>\nFigure 11 \u2013 Exemples de d\u00e9gagements dans la norme CEI 60335-1 donne un exemple simple. Sur la base de ce chiffre, nous pouvons r\u00e9fl\u00e9chir aux caract\u00e9ristiques de base de l&#8217;appareil de classe II, de la construction de classe II, de l&#8217;appareil de classe I et de la construction de classe I.<br>","protected":false},"excerpt":{"rendered":"<p>appareil de classe II\u00a0: appareil dans lequel la protection contre les chocs \u00e9lectriques ne repose pas isolation de base uniquement mais dans lequel des pr\u00e9cautions de s\u00e9curit\u00e9 suppl\u00e9mentaires sont fournies, telles que double isolation ou isolation renforc\u00e9e, aucune disposition n&#8217;\u00e9tant pr\u00e9vue pour une mise \u00e0 la terre de protection ou une d\u00e9pendance aux conditions d&#8217;installation&#8230;.<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_kadence_starter_templates_imported_post":false,"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"footnotes":""},"categories":[5],"tags":[74,80,82,83,84,162,159,105,147,161,77,75],"class_list":["post-525","post","type-post","status-publish","format-standard","hentry","category-terms-and-definitions","tag-insulation-applied-to-live-parts-to-provide-basic-protection-against-electric-shock","tag-appliance-in-which-protection-against-electric-shock-relies-upon-basic-insulation-only-there-being-no-means-for-the-connection-of-conductive-accessible-parts-if-any-to-the-protective-conductor-in-t","tag-appliance-in-which-protection-against-electric-shock-does-not-rely-on-basic-insulation-only-but-which-includes-an-additional-safety-precaution-in-that-conductive-accessible-parts-are-connected-to-the","tag-appliance-in-which-protection-against-electric-shock-does-not-rely-on-basic-insulation-only-but-in-which-additional-safety-precautions-are-provided-such-as-double-insulation-or-reinforced-insulation","tag-part-of-an-appliance-for-which-protection-against-electric-shock-relies-upon-double-insulation-or-reinforced-insulation","tag-double-precaution","tag-earthing","tag-conductor-or-conductive-part-intended-to-be-energized-in-normal-use-including-a-neutral-conductor-but-by-convention-not-a-pen-conductor","tag-protection-against-electric-shock","tag-protective-earthing-conductor","tag-single-insulation-applied-to-live-parts-that-provides-a-degree-of-protection-against-electric-shock-equivalent-to-double-insulation-under-the-conditions-specified-in-this-standard","tag-independent-insulation-applied-in-addition-to-basic-insulation-in-order-to-provide-protection-against-electric-shock-in-the-event-of-a-failure-of-basic-insulation"],"translation":{"provider":"WPGlobus","version":"3.0.1","language":"fr","enabled_languages":["en","es","ar","de","ja","fr","ru","th","nl","it","fa","ko","pt","hi","ro","tr","vi","id","zu"],"languages":{"en":{"title":true,"content":true,"excerpt":false},"es":{"title":true,"content":true,"excerpt":false},"ar":{"title":true,"content":true,"excerpt":false},"de":{"title":true,"content":true,"excerpt":false},"ja":{"title":true,"content":true,"excerpt":false},"fr":{"title":true,"content":true,"excerpt":false},"ru":{"title":true,"content":true,"excerpt":false},"th":{"title":true,"content":true,"excerpt":false},"nl":{"title":true,"content":true,"excerpt":false},"it":{"title":true,"content":true,"excerpt":false},"fa":{"title":true,"content":true,"excerpt":false},"ko":{"title":true,"content":true,"excerpt":false},"pt":{"title":true,"content":true,"excerpt":false},"hi":{"title":true,"content":true,"excerpt":false},"ro":{"title":true,"content":true,"excerpt":false},"tr":{"title":true,"content":true,"excerpt":false},"vi":{"title":true,"content":true,"excerpt":false},"id":{"title":true,"content":true,"excerpt":false},"zu":{"title":true,"content":true,"excerpt":false}}},"_links":{"self":[{"href":"https:\/\/gezhi-tech.com\/fr\/wp-json\/wp\/v2\/posts\/525","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gezhi-tech.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gezhi-tech.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gezhi-tech.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gezhi-tech.com\/fr\/wp-json\/wp\/v2\/comments?post=525"}],"version-history":[{"count":60,"href":"https:\/\/gezhi-tech.com\/fr\/wp-json\/wp\/v2\/posts\/525\/revisions"}],"predecessor-version":[{"id":2836,"href":"https:\/\/gezhi-tech.com\/fr\/wp-json\/wp\/v2\/posts\/525\/revisions\/2836"}],"wp:attachment":[{"href":"https:\/\/gezhi-tech.com\/fr\/wp-json\/wp\/v2\/media?parent=525"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gezhi-tech.com\/fr\/wp-json\/wp\/v2\/categories?post=525"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gezhi-tech.com\/fr\/wp-json\/wp\/v2\/tags?post=525"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}