{"id":39715,"date":"2023-02-22T11:40:56","date_gmt":"2023-02-22T10:40:56","guid":{"rendered":"https:\/\/www.gt-engineering.it\/approfondimenti\/%tipologia_approfondimento%\/protection-from-direct-contacts-ipxxb-or-ip2x\/"},"modified":"2024-12-30T14:07:59","modified_gmt":"2024-12-30T13:07:59","slug":"protection-from-direct-contacts-ipxxb-or-ip2x","status":"publish","type":"approfondimento","link":"https:\/\/www.gt-engineering.it\/fr\/approfondissement\/securite-electrique\/protection-from-direct-contacts-ipxxb-or-ip2x\/","title":{"rendered":"Protection contre les contacts directs : IPXXB ou IP2X ?"},"content":{"rendered":"\n\n \n \n \n
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\n

LA QUESTION : <\/strong><\/p>\n

Dans les normes \u00e9lectriques, on lit souvent que les enveloppes des mat\u00e9riels \u00e9lectriques,<\/strong> en g\u00e9n\u00e9ral, doivent offrir un degr\u00e9 de protection contre le contact avec des partie active dangereuse (sous tension) d’au moins IPXXB<\/strong> ou IP2X<\/strong> conform\u00e9ment \u00e0 la norme IEC 60529<\/strong>. Que signifient ces codes et quelles sont les diff\u00e9rences entre le degr\u00e9 de protection IPXXB et le degr\u00e9 de protection IP2X ?<\/p>\n

 <\/p>\n<\/div> <\/div>\n \n \n

<\/div>\n \n\n <\/div>\n <\/section>\n\n \n\n\n\n\n \n \n \n
\n\n \n \n \n \r\n\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n <\/picture>\r\n\r\n \r\n\r\n \r\n \r\n <\/div>\n \n
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CONSID\u00c9RATIONS<\/strong>
\nCommen\u00e7ons par l’organisation du code IP<\/strong>. Le code du degr\u00e9 de protection est compos\u00e9 des parties suivantes :
\n– Lettre de code<\/strong> (protection internationale) IP<\/strong> ;
\n– Premier chiffre caract\u00e9ristique<\/strong> (chiffre 0 \u00e0 6, ou lettre X) ;
\n– Deuxi\u00e8me chiffre caract\u00e9ristique<\/strong> (chiffre de 0 \u00e0 8, ou lettre X) ;
\n– Lettre suppl\u00e9mentaire<\/strong> (facultative) (lettres A, B, C, D) ;
\n– Lettre suppl\u00e9mentaire<\/strong> (facultative) (lettres H, M, S, W).<\/p>\n<\/div> <\/div>\n \n \n

<\/div>\n \n\n <\/div>\n <\/section>\n\n \n\n\n\n\n \n \n \n
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Le premier chiffre<\/strong> caract\u00e9ristique indique que l\u2019enveloppe procure:<\/p>\n

    \n
  • une protection des personnes contre l\u2019acc\u00e8s aux parties dangereuses en emp\u00eachant ou en limitant la p\u00e9n\u00e9tration d\u2019une partie du corps humain ou d\u2019un objet<\/strong> tenu par une personne; et en m\u00eame temps<\/li>\n
  • une protection des mat\u00e9riels qu\u2019elle contient contre la p\u00e9n\u00e9tration de corps solides \u00e9trangers.<\/li>\n<\/ul>\n

    Le deuxi\u00e8me chiffre<\/strong> caract\u00e9ristique indique le degr\u00e9 de protection procur\u00e9 par les enveloppes contre les effets nuisibles sur le mat\u00e9riel dus \u00e0 la p\u00e9n\u00e9tration de l\u2019eau.<\/p>\n

    La lettre additionnelle<\/strong> indique le degr\u00e9 de protection des personnes contre l\u2019acc\u00e8s aux parties dangereuses. Les lettres additionnelles sont utilis\u00e9es seulement<\/p>\n

      \n
    • si la protection r\u00e9elle contre l\u2019acc\u00e8s aux parties dangereuses est plus \u00e9lev\u00e9e que celle qui est indiqu\u00e9e par le premier chiffre caract\u00e9ristique<\/li>\n
    • ou si seule la protection contre l\u2019acc\u00e8s aux parties dangereuses est mentionn\u00e9e, le premier chiffre caract\u00e9ristique \u00e9tant alors remplac\u00e9 par un X.<\/li>\n<\/ul>\n<\/div> <\/div>\n <\/div>\n \n \n <\/div>\n <\/section>\n\n \n\n\n\n\n \n \n \n
      \n\n \n \n \n \r\n\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n <\/picture>\r\n\r\n \r\n\r\n \r\n \r\n <\/div>\n \n
      \n \n
      \n

      Analysons les deux degr\u00e9s de protection IPXXB<\/strong> et IP2X.<\/strong><\/p>\n

      Selon la norme EN IEC 60529,<\/strong> un \u00e9quipement marqu\u00e9 IPXXB<\/strong> est prot\u00e9g\u00e9 contre l’acc\u00e8s avec le doigt<\/strong>, ou plut\u00f4t le doigt d’essai articul\u00e9 de 12 mm de diam\u00e8tre et de 80 mm de longueur a un espace suffisant par rapport aux parties dangereuses.<\/p>\n

      Selon la norme EN IEC 60529,<\/strong> un appareil marqu\u00e9 IP2X<\/strong> est prot\u00e9g\u00e9 contre les corps \u00e9trangers solides<\/strong> d’un diam\u00e8tre \u2265 12,5 mm, ou plut\u00f4t la sonde ou la sph\u00e8re de 12,5 mm de diam\u00e8tre ne p\u00e9n\u00e8tre pas compl\u00e8tement. En outre, le marquage IP2X garantit \u00e9galement une protection contre l’acc\u00e8s aux parties dangereuses. En particulier, un \u00e9quipement marqu\u00e9 IP2X est prot\u00e9g\u00e9 contre l’acc\u00e8s<\/strong> aux parties dangereuses avec le doigt, ou plut\u00f4t le doigt d’essai articul\u00e9 de 12 mm de diam\u00e8tre, 80 mm de longueur a un d\u00e9gagement ad\u00e9quat des parties dangereuses.<\/p>\n<\/div> <\/div>\n \n \n

      <\/div>\n \n\n <\/div>\n <\/section>\n\n \n\n\n\n\n \n \n \n
      \n\n \n \n \n
      \n \n
      \n

      CONCLUSION<\/strong><\/p>\n

      Le degr\u00e9 de protection IPXXB<\/strong> doit \u00eatre choisi lorsque le danger r\u00e9side dans l’acc\u00e8s \u00e0 des parties dangereuses<\/strong> (contact direct). Ce degr\u00e9 de protection repr\u00e9sente une condition n\u00e9cessaire et suffisante pour prot\u00e9ger contre les contacts directs.
      \nLe degr\u00e9 de protection IP2X<\/strong> doit \u00eatre choisi lorsque les dangers sont \u00e0 la fois la p\u00e9n\u00e9tration d’un corps \u00e9tranger solide<\/strong> (d’un diam\u00e8tre \u2265 12,5 mm) dans l’\u00e9quipement \u00e9lectrique et l’acc\u00e8s \u00e0 des parties dangereuses<\/strong>. Ce degr\u00e9 de protection assure la m\u00eame protection contre les contacts directs que l’IPXXB<\/strong>. Ce degr\u00e9 de protection repr\u00e9sente une condition suffisante pour assurer la protection contre les contacts directs.<\/p>\n

      En ce qui concerne les contacts directs,<\/strong> le degr\u00e9 de protection IP2X<\/strong> est \u00e9quivalent au degr\u00e9 de protection IPXXB<\/strong>.<\/p>\n

       <\/p>\n

       <\/p>\n<\/div> <\/div>\n \n \n \n\n <\/div>\n <\/section>\n\n \n","protected":false},"excerpt":{"rendered":"

      Dans les normes \u00e9lectriques, on lit souvent que les ensembles et\/ou les \u00e9quipements \u00e9lectriques en g\u00e9n\u00e9ral doivent offrir un degr\u00e9 de protection contre le contact avec des pi\u00e8ces sous tension d’au moins IPXXB ou IP2X conform\u00e9ment \u00e0 la norme IEC 60529. Que signifient ces codes et quelles sont les diff\u00e9rences entre le degr\u00e9 de protection IPXXB et le degr\u00e9 de protection IP2X ?<\/p>\n","protected":false},"author":1,"featured_media":33242,"parent":0,"menu_order":84,"template":"","meta":{"_acf_changed":false,"footnotes":""},"tipologia_approfondimento":[158],"class_list":["post-39715","approfondimento","type-approfondimento","status-publish","has-post-thumbnail","hentry","tipologia_approfondimento-securite-electrique"],"acf":{"sottotitolo":"","allegati":null},"yoast_head":"\nPROTECTION FROM DIRECT CONTACTS: IPXXB or IP2X?<\/title>\n<meta name=\"description\" content=\"THE QUESTION On the electrical standard, we often read that the assemblies and\/or the electrical equipments in general shall provide a...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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