{"id":2121,"date":"2024-09-01T15:32:00","date_gmt":"2024-09-01T13:32:00","guid":{"rendered":"https:\/\/gezhi-tech.com\/?p=2121"},"modified":"2025-09-27T17:50:23","modified_gmt":"2025-09-27T15:50:23","slug":"clause-3-how-to-understand-the-definition-of-creepage-distance","status":"publish","type":"post","link":"https:\/\/gezhi-tech.com\/fr\/clause-3-how-to-understand-the-definition-of-creepage-distance\/","title":{"rendered":"Article 3 \u2013 Comment comprendre la d\u00e9finition de \u00ab ligne d&#8217;isolement \u00bb"},"content":{"rendered":"distance de fuite : distance la plus courte le long de la surface de l&#8217;isolant entre deux parties conductrices ou entre une partie conductrice et la surface accessible.<br>\n<br>\nLes charges peuvent se propager de mani\u00e8re directionnelle dans l\u2019air, formant ainsi un courant. C&#8217;est le sens du d\u00e9douanement. En fait, les charges peuvent \u00e9galement se propager \u00e0 travers le mat\u00e9riau isolant lui-m\u00eame, car aucun mat\u00e9riau n&#8217;est compl\u00e8tement isol\u00e9. La diff\u00e9rence de courant form\u00e9e entre les deux \u00e9lectrodes lorsque deux \u00e9lectrodes avec des potentiels diff\u00e9rents sont appliqu\u00e9es sur les deux faces d&#8217;un papier d&#8217;impression A4 ordinaire et sur les deux faces d&#8217;un mat\u00e9riau en caoutchouc de 2 mm d&#8217;\u00e9paisseur est tr\u00e8s grande. Les charges peuvent \u00e9galement se propager de mani\u00e8re directionnelle le long de la surface du mat\u00e9riau isolant. L&#8217;effet de la propagation des charges sur la surface de diff\u00e9rents mat\u00e9riaux est \u00e9galement diff\u00e9rent. Si d\u2019autres substances (polluants) sont fix\u00e9es \u00e0 la surface du mat\u00e9riau isolant, l\u2019effet de propagation des charges est \u00e9galement diff\u00e9rent. Afin d&#8217;\u00e9viter que des charges ne se propagent le long de la surface du mat\u00e9riau isolant et ne provoquent un choc \u00e9lectrique, la d\u00e9finition et les exigences de la ligne de fuite sont g\u00e9n\u00e9r\u00e9es. La propagation de la charge \u00e0 travers le corps en mat\u00e9riau isolant g\u00e9n\u00e8re les exigences d&#8217;isolation solide mentionn\u00e9es dans le premier paragraphe de l&#8217;article 29. L&#8217;article 29.2 donne les exigences relatives \u00e0 la distance dans l&#8217;air.<br>\n<figure class=\"wp-block-image size-large is-resized\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"636\" height=\"1024\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/clearance-and-creepage-1-636x1024.png\" alt=\"\" class=\"wp-image-2114\" style=\"width:658px;height:auto\" srcset=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/clearance-and-creepage-1-636x1024.png 636w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/clearance-and-creepage-1-186x300.png 186w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/clearance-and-creepage-1-768x1236.png 768w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/clearance-and-creepage-1.png 840w\" sizes=\"auto, (max-width: 636px) 100vw, 636px\" \/><br>\n<\/figure><br>\nLa d\u00e9finition de la ligne de fuite provient de la norme CEI 60664-1:2020. Puisque nous devons expliquer la ligne de fuite, nous devons montrer les images des figures 4 \u00e0 14 de la norme CEI 60664-1:2020. Ici, les lecteurs doivent r\u00e9fl\u00e9chir attentivement \u00e0 la mani\u00e8re de d\u00e9terminer \u00ab X mm \u00bb. S&#8217;il y a une rainure sur le chemin form\u00e9 par la ligne de fuite, il y aura une situation de rainure en pont. Personnellement, je pense que la principale raison du pontage est le d\u00e9p\u00f4t de polluants dans le sillon. Ces polluants sont principalement des poussi\u00e8res, et les poussi\u00e8res humides sont plus conductrices. Par cons\u00e9quent, en copiant le texte original de la norme, il existe les trois hypoth\u00e8ses suivantes\u00a0:<br>\u2013 Lorsque la distance \u00e0 travers une rainure est inf\u00e9rieure \u00e0 la largeur sp\u00e9cifi\u00e9e X (voir tableau 1), la ligne de fuite est mesur\u00e9e directement \u00e0 travers la rainure et ne prend pas en compte le contour de la rainure (voir figure 4).<br>\u2013 lorsque la distance \u00e0 travers une rainure est \u00e9gale ou sup\u00e9rieure \u00e0 la largeur sp\u00e9cifi\u00e9e X (voir tableau 1), la ligne de fuite est mesur\u00e9e le long des contours de la rainure (voir figure 5)\u00a0;<br>\u2013 tout \u00e9videment est suppos\u00e9 \u00eatre combl\u00e9 par un lien isolant ayant une longueur \u00e9gale \u00e0 la largeur X sp\u00e9cifi\u00e9e et \u00e9tant plac\u00e9 dans la position la plus d\u00e9favorable (voir Figure 6);<br>\u2013 les jeux et lignes de fuite mesur\u00e9s entre des pi\u00e8ces pouvant prendre des positions diff\u00e9rentes les unes par rapport aux autres, sont mesur\u00e9s lorsque ces pi\u00e8ces sont dans leur position la plus d\u00e9favorable.<br>\n<figure class=\"wp-block-image size-full\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"648\" height=\"245\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-4-of-IEC-60664-1-only.png\" alt=\"\" class=\"wp-image-2158\" srcset=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-4-of-IEC-60664-1-only.png 648w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-4-of-IEC-60664-1-only-300x113.png 300w\" sizes=\"auto, (max-width: 648px) 100vw, 648px\" \/><br>\n<figcaption class=\"wp-element-caption\"><strong>Figure 4 \u2013 \u00c0 travers la rainure<\/strong><\/figcaption><\/figure><br>\nCondition\u00a0: Le chemin consid\u00e9r\u00e9 comprend une rainure \u00e0 c\u00f4t\u00e9s parall\u00e8les ou convergents de n&#8217;importe quelle profondeur et d&#8217;une largeur inf\u00e9rieure \u00e0 X\u00a0mm.<br>R\u00e8gle\u00a0:\u00a0Le jeu et la ligne d&#8217;isolement sont mesur\u00e9s directement \u00e0 travers la rainure, comme indiqu\u00e9.<br>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\"><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image size-full\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"278\" height=\"32\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/clearance.png\" alt=\"\" class=\"wp-image-2166\"\/><br>\n<\/figure><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><strong>Autorisation<\/strong><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image size-full is-resized\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"290\" height=\"47\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/creepage-distance.png\" alt=\"\" class=\"wp-image-2167\" style=\"width:123px;height:auto\"\/><br>\n<\/figure><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><strong>Distance d&#8217;isolement<\/strong><\/div><\/div><figure class=\"wp-block-image size-full\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"633\" height=\"242\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-5-of-IEC-60664-1-only.png\" alt=\"\" class=\"wp-image-2159\" srcset=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-5-of-IEC-60664-1-only.png 633w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-5-of-IEC-60664-1-only-300x115.png 300w\" sizes=\"auto, (max-width: 633px) 100vw, 633px\" \/><br>\n<figcaption class=\"wp-element-caption\"><strong>Figure 5 &#8211; Contour de la rainure<\/strong><\/figcaption><\/figure><br>\nCondition\u00a0: Le chemin consid\u00e9r\u00e9 comprend une rainure \u00e0 c\u00f4t\u00e9s parall\u00e8les de n&#8217;importe quelle profondeur et \u00e9gale ou sup\u00e9rieure \u00e0 X\u00a0mm.<br>R\u00e8gle\u00a0:\u00a0La clairance est la distance de &#8220;ligne de vue&#8221;. La ligne de fuite suit le contour de la rainure.<br>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\"><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image size-full\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"278\" height=\"32\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/clearance.png\" alt=\"\" class=\"wp-image-2166\"\/><br>\n<\/figure><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><strong>Autorisation<\/strong><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image size-full is-resized\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"290\" height=\"47\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/creepage-distance.png\" alt=\"\" class=\"wp-image-2167\" style=\"width:123px;height:auto\"\/><br>\n<\/figure><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><strong>Distance d&#8217;isolement<\/strong><\/div><\/div><figure class=\"wp-block-image size-full\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"713\" height=\"290\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-6-of-IEC-60664-1-only.png\" alt=\"\" class=\"wp-image-2160\" srcset=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-6-of-IEC-60664-1-only.png 713w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-6-of-IEC-60664-1-only-300x122.png 300w\" sizes=\"auto, (max-width: 713px) 100vw, 713px\" \/><br>\n<figcaption class=\"wp-element-caption\"><strong>Figure 6 \u2013 Contour de la rainure avec angle<\/strong><\/figcaption><\/figure><br>\nCondition\u00a0: Le chemin consid\u00e9r\u00e9 comprend une rainure en forme de V d&#8217;une largeur sup\u00e9rieure \u00e0 X\u00a0mm.<br>R\u00e8gle\u00a0:\u00a0La clairance est la distance de &#8220;ligne de vue&#8221;. La ligne de fuite suit le contour de la rainure mais recouvre le fond de la rainure par un lien isolant de X mm.<br>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\"><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image size-full\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"278\" height=\"32\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/clearance.png\" alt=\"\" class=\"wp-image-2166\"\/><br>\n<\/figure><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><strong>Autorisation<\/strong><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image size-full is-resized\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"290\" height=\"47\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/creepage-distance.png\" alt=\"\" class=\"wp-image-2167\" style=\"width:123px;height:auto\"\/><br>\n<\/figure><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><strong>Distance d&#8217;isolement<\/strong><\/div><\/div><figure class=\"wp-block-image size-full\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"637\" height=\"287\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-7-of-IEC-60664-1-only.png\" alt=\"\" class=\"wp-image-2161\" srcset=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-7-of-IEC-60664-1-only.png 637w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-7-of-IEC-60664-1-only-300x135.png 300w\" sizes=\"auto, (max-width: 637px) 100vw, 637px\" \/><br>\n<figcaption class=\"wp-element-caption\"><strong>Figure 7 &#8211; Contour de la c\u00f4te<\/strong><\/figcaption><\/figure><br>\nCondition : Le chemin consid\u00e9r\u00e9 comporte une nervure.<br>R\u00e8gle\u00a0:\u00a0Le d\u00e9gagement est le chemin d&#8217;air direct le plus court au-dessus du dessus de la nervure. La ligne de fuite suit le contour de la nervure.<br>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\"><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image size-full\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"278\" height=\"32\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/clearance.png\" alt=\"\" class=\"wp-image-2166\"\/><br>\n<\/figure><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><strong>Autorisation<\/strong><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image size-full is-resized\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"290\" height=\"47\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/creepage-distance.png\" alt=\"\" class=\"wp-image-2167\" style=\"width:123px;height:auto\"\/><br>\n<\/figure><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><strong>Distance d&#8217;isolement<\/strong><\/div><\/div><figure class=\"wp-block-image size-full is-resized\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"662\" height=\"377\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-8-of-IEC-60664-1-only.png\" alt=\"\" class=\"wp-image-2162\" style=\"width:662px;height:auto\" srcset=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-8-of-IEC-60664-1-only.png 662w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-8-of-IEC-60664-1-only-300x171.png 300w\" sizes=\"auto, (max-width: 662px) 100vw, 662px\" \/><br>\n<figcaption class=\"wp-element-caption\"><strong>Figure 8 \u2013 Joint non ciment\u00e9 avec rainures inf\u00e9rieures \u00e0 X<\/strong><\/figcaption><\/figure><br>\nCondition\u00a0: Le chemin consid\u00e9r\u00e9 comprend un joint non ciment\u00e9 avec des rainures de moins de X\u00a0mm de large de chaque c\u00f4t\u00e9.<br>R\u00e8gle : La distance de d\u00e9gagement et la ligne de fuite correspondent \u00e0 la distance de \u00ab ligne de vis\u00e9e \u00bb indiqu\u00e9e.<br>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\"><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image size-full\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"278\" height=\"32\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/clearance.png\" alt=\"\" class=\"wp-image-2166\"\/><br>\n<\/figure><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><strong>Autorisation<\/strong><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image size-full is-resized\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"290\" height=\"47\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/creepage-distance.png\" alt=\"\" class=\"wp-image-2167\" style=\"width:123px;height:auto\"\/><br>\n<\/figure><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><strong>Distance d&#8217;isolement<\/strong><\/div><\/div><figure class=\"wp-block-image size-full\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"647\" height=\"375\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-9-of-IEC-60664-1-only.png\" alt=\"\" class=\"wp-image-2163\" srcset=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-9-of-IEC-60664-1-only.png 647w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-9-of-IEC-60664-1-only-300x174.png 300w\" sizes=\"auto, (max-width: 647px) 100vw, 647px\" \/><br>\n<figcaption class=\"wp-element-caption\"><strong>Figure 9 \u2013 Joint non ciment\u00e9 avec rainures \u00e9gales ou sup\u00e9rieures \u00e0 X<\/strong><\/figcaption><\/figure><br>\nCondition\u00a0: Le chemin consid\u00e9r\u00e9 comprend un joint non ciment\u00e9 avec des rainures d&#8217;une largeur \u00e9gale ou sup\u00e9rieure \u00e0 X\u00a0mm de chaque c\u00f4t\u00e9.<br>R\u00e8gle\u00a0:\u00a0La clairance est la distance de &#8220;ligne de vue&#8221;. La ligne de fuite suit le contour des rainures.<br>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\"><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image size-full\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"278\" height=\"32\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/clearance.png\" alt=\"\" class=\"wp-image-2166\"\/><br>\n<\/figure><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><strong>Autorisation<\/strong><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image size-full is-resized\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"290\" height=\"47\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/creepage-distance.png\" alt=\"\" class=\"wp-image-2167\" style=\"width:123px;height:auto\"\/><br>\n<\/figure><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><strong>Distance d&#8217;isolement<\/strong><\/div><\/div><figure class=\"wp-block-image size-full\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"648\" height=\"377\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-10-of-IEC-60664-1-only.png\" alt=\"\" class=\"wp-image-2164\" srcset=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-10-of-IEC-60664-1-only.png 648w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-10-of-IEC-60664-1-only-300x175.png 300w\" sizes=\"auto, (max-width: 648px) 100vw, 648px\" \/><br>\n<figcaption class=\"wp-element-caption\"><strong>Figure 10 \u2013 Joint non ciment\u00e9 avec une rainure sur un c\u00f4t\u00e9 inf\u00e9rieure \u00e0 X<\/strong><\/figcaption><\/figure><br>\nCondition\u00a0: Le chemin consid\u00e9r\u00e9 comprend un joint non ciment\u00e9 avec une rainure d&#8217;un c\u00f4t\u00e9 de moins de X mm de large et la rainure de l&#8217;autre c\u00f4t\u00e9 \u00e9gale ou sup\u00e9rieure \u00e0 X mm de large.<br>R\u00e8gle : Zone de d\u00e9gagement et de lignes de fuite comme indiqu\u00e9.<br>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\"><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image size-full\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"278\" height=\"32\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/clearance.png\" alt=\"\" class=\"wp-image-2166\"\/><br>\n<\/figure><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><strong>Autorisation<\/strong><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image size-full is-resized\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"290\" height=\"47\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/creepage-distance.png\" alt=\"\" class=\"wp-image-2167\" style=\"width:123px;height:auto\"\/><br>\n<\/figure><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><strong>Distance d&#8217;isolement<\/strong><\/div><\/div><figure class=\"wp-block-image size-full\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"662\" height=\"283\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-11-of-IEC-60664-1-only.png\" alt=\"\" class=\"wp-image-2165\" srcset=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-11-of-IEC-60664-1-only.png 662w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-11-of-IEC-60664-1-only-300x128.png 300w\" sizes=\"auto, (max-width: 662px) 100vw, 662px\" \/><br>\n<figcaption class=\"wp-element-caption\"><strong>Figure 11 \u2013 Distance d&#8217;isolement et d\u00e9gagement \u00e0 travers un joint non ciment\u00e9<\/strong><\/figcaption><\/figure><br>\nCondition\u00a0: La ligne d&#8217;isolement \u00e0 travers le joint non ciment\u00e9 est inf\u00e9rieure \u00e0 la ligne d&#8217;isolement au-dessus du<br>barri\u00e8re mais plus que l&#8217;espace libre au-dessus de la barri\u00e8re.<br>R\u00e8gle\u00a0:\u00a0Le d\u00e9gagement est le chemin d&#8217;air direct le plus court au-dessus du sommet de la barri\u00e8re.<br>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\"><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image size-full\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"278\" height=\"32\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/clearance.png\" alt=\"\" class=\"wp-image-2166\"\/><br>\n<\/figure><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><strong>Autorisation<\/strong><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image size-full is-resized\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"290\" height=\"47\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/creepage-distance.png\" alt=\"\" class=\"wp-image-2167\" style=\"width:123px;height:auto\"\/><br>\n<\/figure><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><strong>Distance d&#8217;isolement<\/strong><\/div><\/div><figure class=\"wp-block-image size-full\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"685\" height=\"306\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-12-of-IEC-60664-1-only.png\" alt=\"\" class=\"wp-image-2155\" srcset=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-12-of-IEC-60664-1-only.png 685w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-12-of-IEC-60664-1-only-300x134.png 300w\" sizes=\"auto, (max-width: 685px) 100vw, 685px\" \/><br>\n<figcaption class=\"wp-element-caption\"><strong>Figure 12 \u2013 Distance d&#8217;isolement et d\u00e9gagement par rapport \u00e0 une t\u00eate de vis sup\u00e9rieure \u00e0 X<\/strong><\/figcaption><\/figure><br>\nEspace entre la t\u00eate de vis et la paroi de l&#8217;\u00e9videment suffisamment large pour \u00eatre pris en compte.<br>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\"><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image size-full\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"278\" height=\"32\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/clearance.png\" alt=\"\" class=\"wp-image-2166\"\/><br>\n<\/figure><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><strong>Autorisation<\/strong><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image size-full is-resized\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"290\" height=\"47\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/creepage-distance.png\" alt=\"\" class=\"wp-image-2167\" style=\"width:123px;height:auto\"\/><br>\n<\/figure><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><strong>Distance d&#8217;isolement<\/strong><\/div><\/div><figure class=\"wp-block-image size-full is-resized\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"637\" height=\"288\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-13-of-IEC-60664-1-only.png\" alt=\"\" class=\"wp-image-2156\" style=\"width:787px;height:auto\" srcset=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-13-of-IEC-60664-1-only.png 637w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-13-of-IEC-60664-1-only-300x136.png 300w\" sizes=\"auto, (max-width: 637px) 100vw, 637px\" \/><br>\n<figcaption class=\"wp-element-caption\"><strong>Figure 13 \u2013 Distance d&#8217;isolement et jeu par rapport \u00e0 une t\u00eate de vis inf\u00e9rieurs \u00e0 X<\/strong><\/figcaption><\/figure><br>\nEspace entre la t\u00eate de vis et la paroi de l&#8217;\u00e9videment trop \u00e9troit pour \u00eatre pris en compte.<br>La mesure de la ligne d&#8217;isolement s&#8217;effectue de la t\u00eate de vis au mur lorsque la distance est \u00e9gale \u00e0 X mm.<br>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\"><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image size-full\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"278\" height=\"32\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/clearance.png\" alt=\"\" class=\"wp-image-2166\"\/><br>\n<\/figure><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><strong>Autorisation<\/strong><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image size-full is-resized\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"290\" height=\"47\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/creepage-distance.png\" alt=\"\" class=\"wp-image-2167\" style=\"width:123px;height:auto\"\/><br>\n<\/figure><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><strong>Distance d&#8217;isolement<\/strong><\/div><\/div><figure class=\"wp-block-image size-full\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"760\" height=\"340\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-14-of-IEC-60664-1-only.png\" alt=\"\" class=\"wp-image-2157\" srcset=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-14-of-IEC-60664-1-only.png 760w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-14-of-IEC-60664-1-only-300x134.png 300w\" sizes=\"auto, (max-width: 760px) 100vw, 760px\" \/><br>\n<figcaption class=\"wp-element-caption\"><strong>Figure 14 \u2013 Ligne d&#8217;isolement et jeu avec partie flottante conductrice<\/strong><\/figcaption><\/figure><br>\nC : partie flottante conductrice<br>Le d\u00e9gagement est la distance = <em>d<\/em> + <em>D<\/em><br>La ligne d&#8217;isolement est \u00e9galement = <em>d<\/em> + <em>D<\/em><br>REMARQUE Voir le Tableau F.2 pour le d\u00e9gagement minimum de <em>d<\/em> de <em>D<\/em>.<br>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\"><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image size-full\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"278\" height=\"32\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/clearance.png\" alt=\"\" class=\"wp-image-2166\"\/><br>\n<\/figure><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><strong>Autorisation<\/strong><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image size-full is-resized\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"290\" height=\"47\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/creepage-distance.png\" alt=\"\" class=\"wp-image-2167\" style=\"width:123px;height:auto\"\/><br>\n<\/figure><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><strong>Distance d&#8217;isolement<\/strong><\/div><\/div><br>\nLa dimension X, pr\u00e9cis\u00e9e dans les exemples suivants, a une valeur minimale en fonction du degr\u00e9 de pollution comme suit :<br>\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Degr\u00e9 de pollution<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>Valeur minimale de la dimension X<\/strong><\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">1<\/td><td class=\"has-text-align-center\" data-align=\"center\">0,25mm<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">2<\/td><td class=\"has-text-align-center\" data-align=\"center\">1,0mm<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">3<\/td><td class=\"has-text-align-center\" data-align=\"center\">1,5mm<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\"><strong>Tableau 1 &#8211; Dimensionnement des rainures<\/strong><\/figcaption><\/figure><br>\nSi l&#8217;exigence de jeu associ\u00e9 est inf\u00e9rieure \u00e0 3 mm, la dimension minimale X peut \u00eatre r\u00e9duite \u00e0 un tiers du jeu associ\u00e9.<br>Prenons un exemple pour illustrer comment calculer la valeur de &#8220;X mm&#8221;. Si vous mesurez un trajet de 5 mm et trouvez une rainure dans le trajet, en supposant un degr\u00e9 de pollution 3, sur la base du tableau ci-dessus, alors X = 1,5 mm (en tenant compte du degr\u00e9 de pollution). Si la distance que vous mesurez est de 2,7 mm, alors X = 2,7 mm\/3 = 0,9 mm.<br>\n<figure class=\"wp-block-image size-large\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"523\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/example-11-of-IEC-60664-1-1024x523.png\" alt=\"\" class=\"wp-image-2150\" srcset=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/example-11-of-IEC-60664-1-1024x523.png 1024w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/example-11-of-IEC-60664-1-300x153.png 300w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/example-11-of-IEC-60664-1-768x393.png 768w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/example-11-of-IEC-60664-1.png 1250w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><br>\n<\/figure><br>\nExpliquons l&#8217;exemple 11 s\u00e9par\u00e9ment. L&#8217;image ci-dessus provient de la version CEI 60664-1:2007. Si les lecteurs v\u00e9rifient attentivement l&#8217;image, ils constateront que ce n&#8217;est que lorsque d et gt;X que le d\u00e9gagement est la distance = d + D qui est vrai, sinon le d\u00e9gagement est D. Les r\u00e8gles de calcul de D et d sont les m\u00eames. Cependant, nous devons souligner qu\u2019il s\u2019agit en fait d\u2019une erreur et que la norme donne une exigence incorrecte. La version CEI 60664-1:2020 de la norme a corrig\u00e9 cette erreur.<br>\n<br>\nLes r\u00e8gles relatives \u00e0 la ligne d&#8217;isolement sont beaucoup plus compliqu\u00e9es que celles relatives aux distances d&#8217;isolement, et les exigences de l&#8217;article 29 sont \u00e9galement plus compliqu\u00e9es. Concernant la ligne de fuite, je pense que si les lecteurs peuvent comprendre les informations ci-dessus, elles sont suffisantes pour mettre en \u0153uvre la s\u00e9rie de normes CEI 60335. Les exigences relatives \u00e0 la ligne de fuite de l&#8217;article 29.2 seront pr\u00e9sent\u00e9es en d\u00e9tail lors de l&#8217;introduction de l&#8217;article 29.2.<br>","protected":false},"excerpt":{"rendered":"<p>distance de fuite : distance la plus courte le long de la surface de l&#8217;isolant entre deux parties conductrices ou entre une partie conductrice et la surface accessible. Les charges peuvent se propager de mani\u00e8re directionnelle dans l\u2019air, formant ainsi un courant. C&#8217;est le sens du d\u00e9douanement. En fait, les charges peuvent \u00e9galement se propager&#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":[87,88,143,147],"class_list":["post-2121","post","type-post","status-publish","format-standard","hentry","category-terms-and-definitions","tag-shortest-distance-in-air-between-two-conductive-parts-or-between-a-conductive-part-and-the-accessible-surface","tag-shortest-distance-along-the-surface-of-insulation-between-two-conductive-parts-or-between-a-conductive-part-and-the-accessible-surface","tag-pollution-degree","tag-protection-against-electric-shock"],"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\/2121","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=2121"}],"version-history":[{"count":38,"href":"https:\/\/gezhi-tech.com\/fr\/wp-json\/wp\/v2\/posts\/2121\/revisions"}],"predecessor-version":[{"id":2256,"href":"https:\/\/gezhi-tech.com\/fr\/wp-json\/wp\/v2\/posts\/2121\/revisions\/2256"}],"wp:attachment":[{"href":"https:\/\/gezhi-tech.com\/fr\/wp-json\/wp\/v2\/media?parent=2121"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gezhi-tech.com\/fr\/wp-json\/wp\/v2\/categories?post=2121"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gezhi-tech.com\/fr\/wp-json\/wp\/v2\/tags?post=2121"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}