{"id":26955,"date":"2024-11-12T13:32:21","date_gmt":"2024-11-12T05:32:21","guid":{"rendered":"https:\/\/www.cnspd.com\/?p=26955"},"modified":"2026-04-13T13:12:57","modified_gmt":"2026-04-13T05:12:57","slug":"comprehensive-guide-to-choosing-surge-protective-devices-spd-part-one","status":"publish","type":"post","link":"https:\/\/www.cnspd.com\/fr\/guide-complet-pour-le-choix-des-appareils-de-protection-contre-les-surtensions-spd-premiere-partie\/","title":{"rendered":"Guide complet sur le choix des dispositifs de protection contre les surtensions (SPD) (premi\u00e8re partie)"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table des mati\u00e8res<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table des mati\u00e8res\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/fr\/guide-complet-pour-le-choix-des-appareils-de-protection-contre-les-surtensions-spd-premiere-partie\/#i-understanding-surge-protective-devices-spd\" >I. Comprendre les dispositifs de protection contre les surtensions (DPS)<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/fr\/guide-complet-pour-le-choix-des-appareils-de-protection-contre-les-surtensions-spd-premiere-partie\/#11-definition-and-working-principle\" >1.1 D\u00e9finition et principe de fonctionnement<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/fr\/guide-complet-pour-le-choix-des-appareils-de-protection-contre-les-surtensions-spd-premiere-partie\/#12-main-spd-types-applications\" >1.2 Principaux types et applications de SPD<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/fr\/guide-complet-pour-le-choix-des-appareils-de-protection-contre-les-surtensions-spd-premiere-partie\/#ii-determining-protection-needs\" >II. D\u00e9termination des besoins de protection<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/fr\/guide-complet-pour-le-choix-des-appareils-de-protection-contre-les-surtensions-spd-premiere-partie\/#21-assessing-system-sensitivity\" >2.1 \u00c9valuation de la sensibilit\u00e9 du syst\u00e8me<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/fr\/guide-complet-pour-le-choix-des-appareils-de-protection-contre-les-surtensions-spd-premiere-partie\/#22-defining-protection-levels-and-standards\" >2.2 D\u00e9finition des niveaux et des normes de protection<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/fr\/guide-complet-pour-le-choix-des-appareils-de-protection-contre-les-surtensions-spd-premiere-partie\/#iii-choosing-the-right-spd\" >III. Choisir le bon DOCUP<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/fr\/guide-complet-pour-le-choix-des-appareils-de-protection-contre-les-surtensions-spd-premiere-partie\/#31-matching-spd-to-system-needs\" >3.1 Adapter le DOCUP aux besoins du syst\u00e8me<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/fr\/guide-complet-pour-le-choix-des-appareils-de-protection-contre-les-surtensions-spd-premiere-partie\/#32-comparing-spd-types\" >3.2 Comparaison des types de DOCUP<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/fr\/guide-complet-pour-le-choix-des-appareils-de-protection-contre-les-surtensions-spd-premiere-partie\/#iv-key-technical-parameters\" >IV. Param\u00e8tres techniques cl\u00e9s<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/fr\/guide-complet-pour-le-choix-des-appareils-de-protection-contre-les-surtensions-spd-premiere-partie\/#41-continuous-operating-voltage-uc\" >4.1 Tension de fonctionnement continu (Uc)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/fr\/guide-complet-pour-le-choix-des-appareils-de-protection-contre-les-surtensions-spd-premiere-partie\/#42-in-and-imax-values\" >4.2 Valeurs In et Imax<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/fr\/guide-complet-pour-le-choix-des-appareils-de-protection-contre-les-surtensions-spd-premiere-partie\/#%e2%9c%85-final-summary-i%e2%80%93iv\" >R\u00e9sum\u00e9 final (I-IV)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/fr\/guide-complet-pour-le-choix-des-appareils-de-protection-contre-les-surtensions-spd-premiere-partie\/#click-to-view-spd-guide-part-two\" >Cliquez pour voir la deuxi\u00e8me partie du guide SPD<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2 data-start=\"138\" data-end=\"188\"><span class=\"ez-toc-section\" id=\"i-understanding-surge-protective-devices-spd\"><\/span>I. Comprendre les dispositifs de protection contre les surtensions (DPS)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3 data-start=\"190\" data-end=\"230\"><span class=\"ez-toc-section\" id=\"11-definition-and-working-principle\"><\/span>1.1 D\u00e9finition et principe de fonctionnement<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"232\" data-end=\"736\">Les dispositifs de protection contre les surtensions (SPD) prot\u00e8gent les \u00e9quipements \u00e9lectroniques contre les surtensions. Ces surtensions sont dues \u00e0 la foudre, \u00e0 la commutation du syst\u00e8me ou \u00e0 des pannes. Bien que br\u00e8ves, elles sont porteuses d'une grande \u00e9nergie. Les dispositifs de protection contre les surtensions fournissent un chemin \u00e0 faible imp\u00e9dance qui dirige en toute s\u00e9curit\u00e9 le courant de surtension vers la terre. Les normes CEI garantissent que les parafoudres limitent les surtensions \u00e0 des niveaux s\u00fbrs, g\u00e9n\u00e9ralement inf\u00e9rieurs \u00e0 2,5 kV. Les SPD de haute qualit\u00e9 r\u00e9agissent en quelques nanosecondes. Choisissez les parafoudres en fonction des besoins du syst\u00e8me et des sp\u00e9cifications techniques. Cette ad\u00e9quation garantit une protection au moment le plus important.<\/p>\n<h3 data-start=\"738\" data-end=\"775\"><span class=\"ez-toc-section\" id=\"12-main-spd-types-applications\"><\/span>1.2 Principaux types et applications de SPD<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"777\" data-end=\"804\">Il existe trois types de DOCUP :<\/p>\n<ul data-start=\"806\" data-end=\"1142\">\n<li data-start=\"806\" data-end=\"907\">\n<p data-start=\"808\" data-end=\"907\"><strong data-start=\"808\" data-end=\"834\">SPD \u00e0 commutation de tension<\/strong> s'adaptent aux lignes de transmission \u00e0 haute tension. Ils agissent rapidement pour arr\u00eater les fortes surtensions.<\/p>\n<\/li>\n<li data-start=\"908\" data-end=\"1007\">\n<p data-start=\"910\" data-end=\"1007\"><strong data-start=\"910\" data-end=\"935\">SPD \u00e0 limitation de tension<\/strong> conviennent aux syst\u00e8mes \u00e0 basse tension. Ils limitent les pics de tension dans les habitations et les bureaux.<\/p>\n<\/li>\n<li data-start=\"1008\" data-end=\"1142\">\n<p data-start=\"1010\" data-end=\"1142\"><strong data-start=\"1010\" data-end=\"1027\">DOCUP combin\u00e9s<\/strong> combinent ces deux caract\u00e9ristiques. Ils sont utilis\u00e9s dans des lieux tels que les h\u00f4pitaux et les centres de donn\u00e9es. Ils garantissent une r\u00e9action et une protection rapides.<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"1144\" data-end=\"1304\">Selon la CEI, vous devez \u00e9valuer la sensibilit\u00e9 du syst\u00e8me et choisir le bon dispositif de protection contre les surtensions. Une \u00e9tude de cas r\u00e9alis\u00e9e dans un h\u00f4pital a montr\u00e9 que les disjoncteurs limitant la tension r\u00e9duisaient les d\u00e9faillances li\u00e9es aux surtensions de plus de 70%.<\/p>\n<hr data-start=\"1306\" data-end=\"1309\" \/>\n<h2 data-start=\"1311\" data-end=\"1346\"><span class=\"ez-toc-section\" id=\"ii-determining-protection-needs\"><\/span>II. D\u00e9termination des besoins de protection<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3 data-start=\"1348\" data-end=\"1384\"><span class=\"ez-toc-section\" id=\"21-assessing-system-sensitivity\"><\/span>2.1 \u00c9valuation de la sensibilit\u00e9 du syst\u00e8me<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"1386\" data-end=\"1701\">La sensibilit\u00e9 du syst\u00e8me d\u00e9pend de la tol\u00e9rance de l'appareil aux pics de tension. Par exemple, les serveurs et les commandes sont tr\u00e8s sensibles. Les moteurs et l'\u00e9clairage sont plus tol\u00e9rants. Les normes IEEE classent cette sensibilit\u00e9 par cat\u00e9gorie. Un centre de donn\u00e9es qui n'avait pas install\u00e9 de SPD a subi des millions de pertes. Vous devez \u00e9valuer la sensibilit\u00e9 pour choisir le bon SPD.<\/p>\n<h3 data-start=\"1703\" data-end=\"1751\"><span class=\"ez-toc-section\" id=\"22-defining-protection-levels-and-standards\"><\/span>2.2 D\u00e9finition des niveaux et des normes de protection<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"1753\" data-end=\"2055\">Les niveaux de protection sont s\u00e9lectionn\u00e9s sur la base de la norme IEC 61643. Les b\u00e2timents r\u00e9sidentiels ont besoin de niveaux inf\u00e9rieurs. Les syst\u00e8mes critiques n\u00e9cessitent une protection plus \u00e9lev\u00e9e. Une usine chimique qui a suivi la norme CEI 61643-11 a constat\u00e9 une baisse de 70% des pannes d'\u00e9quipement. V\u00e9rifiez \u00e9galement les certifications UL 1449 et EN 61643. Elles confirment la conformit\u00e9 aux r\u00e9glementations locales.<\/p>\n<hr data-start=\"2057\" data-end=\"2060\" \/>\n<h2 data-start=\"2062\" data-end=\"2092\"><span class=\"ez-toc-section\" id=\"iii-choosing-the-right-spd\"><\/span>III. Choisir le bon DOCUP<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3 data-start=\"2094\" data-end=\"2130\"><span class=\"ez-toc-section\" id=\"31-matching-spd-to-system-needs\"><\/span>3.1 Adapter le DOCUP aux besoins du syst\u00e8me<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"2132\" data-end=\"2365\">Commencez par examiner votre installation \u00e9lectrique. Pour les \u00e9quipements sensibles, tels que l'imagerie hospitali\u00e8re ou les serveurs des centres de donn\u00e9es, utilisez des SPD avec des niveaux de protection contre les faibles tensions (VPL). La norme CEI 61643-11 recommande que les niveaux de protection soient inf\u00e9rieurs \u00e0 la fen\u00eatre de tol\u00e9rance du syst\u00e8me.<\/p>\n<p data-start=\"2367\" data-end=\"2547\">Pour les environnements \u00e0 haute \u00e9nergie tels que les usines chimiques, s\u00e9lectionnez des SPD avec des courants de d\u00e9charge nominaux (In) et maximaux (Imax) appropri\u00e9s. Veillez \u00e0 ce que l'Imax corresponde au courant de surtension maximal pr\u00e9vu.<\/p>\n<p data-start=\"2549\" data-end=\"2686\">Les SPD d'ext\u00e9rieur doivent \u00eatre de conception robuste, r\u00e9sistants aux intemp\u00e9ries, \u00e0 la corrosion et \u00e0 la chaleur. Cela concerne les plates-formes offshore ou les climats difficiles.<\/p>\n<h3 data-start=\"2688\" data-end=\"2715\"><span class=\"ez-toc-section\" id=\"32-comparing-spd-types\"><\/span>3.2 Comparaison des types de DOCUP<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul data-start=\"2717\" data-end=\"3065\">\n<li data-start=\"2717\" data-end=\"2860\">\n<p data-start=\"2719\" data-end=\"2860\"><strong data-start=\"2719\" data-end=\"2750\">Type 1 (commutation de tension) :<\/strong> G\u00e8re la foudre directe. Install\u00e9 au niveau du branchement. Dans des gammes de 10 kA \u00e0 120 kA selon la norme IEC 61643-11.<\/p>\n<\/li>\n<li data-start=\"2861\" data-end=\"2958\">\n<p data-start=\"2863\" data-end=\"2958\"><strong data-start=\"2863\" data-end=\"2893\">Type 2 (limitation de tension) :<\/strong> Con\u00e7u pour une protection interne contre les surtensions. L'intensit\u00e9 est g\u00e9n\u00e9ralement de 5 \u00e0 40 kA.<\/p>\n<\/li>\n<li data-start=\"2959\" data-end=\"3065\">\n<p data-start=\"2961\" data-end=\"3065\"><strong data-start=\"2961\" data-end=\"2981\">Hybride\/Combin\u00e9 :<\/strong> Offre une protection sur toute la gamme. Bien que plus co\u00fbteux, il permet d'\u00e9conomiser sur les temps d'arr\u00eat et la maintenance.<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"3067\" data-end=\"3123\">\u00c9quilibrer le co\u00fbt et la performance pour garantir la s\u00e9curit\u00e9 \u00e0 long terme.<\/p>\n<hr data-start=\"3125\" data-end=\"3128\" \/>\n<h2 data-start=\"3130\" data-end=\"3161\"><span class=\"ez-toc-section\" id=\"iv-key-technical-parameters\"><\/span>IV. Param\u00e8tres techniques cl\u00e9s<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3 data-start=\"3163\" data-end=\"3204\"><span class=\"ez-toc-section\" id=\"41-continuous-operating-voltage-uc\"><\/span>4.1 Tension de fonctionnement continu (Uc)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"3206\" data-end=\"3467\">Uc indique la tension la plus \u00e9lev\u00e9e que le SPD peut supporter sans s'activer. Pour les syst\u00e8mes \u00e0 230 VCA, choisir Uc au moins 10-20% au-dessus de la tension nominale. Les donn\u00e9es de l'industrie montrent que les disjoncteurs sous-\u00e9valu\u00e9s se d\u00e9clenchent plus souvent, ce qui augmente les co\u00fbts de maintenance. Choisissez judicieusement pour \u00e9quilibrer le co\u00fbt et la fiabilit\u00e9.<\/p>\n<h3 data-start=\"3469\" data-end=\"3495\"><span class=\"ez-toc-section\" id=\"42-in-and-imax-values\"><\/span>4.2 Valeurs In et Imax<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul data-start=\"3497\" data-end=\"3686\">\n<li data-start=\"3497\" data-end=\"3585\">\n<p data-start=\"3499\" data-end=\"3585\"><strong data-start=\"3499\" data-end=\"3534\">Courant de d\u00e9charge nominal (In) :<\/strong> Courant soutenu que le SPD traite de mani\u00e8re r\u00e9p\u00e9t\u00e9e.<\/p>\n<\/li>\n<li data-start=\"3586\" data-end=\"3686\">\n<p data-start=\"3588\" data-end=\"3686\"><strong data-start=\"3588\" data-end=\"3625\">Courant de d\u00e9charge maximal (Imax) :<\/strong> Le courant de surtension le plus \u00e9lev\u00e9 que le SPD peut tol\u00e9rer en une seule fois.<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"3688\" data-end=\"3700\">Par exemple :<\/p>\n<ul data-start=\"3701\" data-end=\"3781\">\n<li data-start=\"3701\" data-end=\"3737\">\n<p data-start=\"3703\" data-end=\"3737\">In = 20 kA g\u00e8re les surtensions typiques.<\/p>\n<\/li>\n<li data-start=\"3738\" data-end=\"3781\">\n<p data-start=\"3740\" data-end=\"3781\">Imax = 40 kA peut r\u00e9sister \u00e0 des cas extr\u00eames.<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"3783\" data-end=\"3948\">Le choix des bonnes valeurs permet de pr\u00e9venir les d\u00e9faillances des \u00e9quipements et d'\u00e9viter les remplacements inutiles. L'adage de Franklin se v\u00e9rifie : \"Une once de pr\u00e9vention vaut une livre de gu\u00e9rison\".<\/p>\n<hr data-start=\"3950\" data-end=\"3953\" \/>\n<h3 data-start=\"3955\" data-end=\"3981\"><span class=\"ez-toc-section\" id=\"%e2%9c%85-final-summary-i%e2%80%93iv\"><\/span>R\u00e9sum\u00e9 final (I-IV)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"3983\" data-end=\"4009\">Cette section du guide couvre :<\/p>\n<ul data-start=\"4010\" data-end=\"4202\">\n<li data-start=\"4010\" data-end=\"4050\">\n<p data-start=\"4012\" data-end=\"4050\">Principes de base des DOCUP : objectif et fonctionnement.<\/p>\n<\/li>\n<li data-start=\"4051\" data-end=\"4085\">\n<p data-start=\"4053\" data-end=\"4085\">Les types de DOCUP et leur utilisation.<\/p>\n<\/li>\n<li data-start=\"4086\" data-end=\"4148\">\n<p data-start=\"4088\" data-end=\"4148\">\u00c9valuer la sensibilit\u00e9 du syst\u00e8me et les niveaux de protection requis.<\/p>\n<\/li>\n<li data-start=\"4149\" data-end=\"4202\">\n<p data-start=\"4151\" data-end=\"4202\">Caract\u00e9ristiques principales : Uc, In, Imax, et s\u00e9lection des applications.<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"4204\" data-end=\"4321\" data-is-last-node=\"\" data-is-only-node=\"\">La section suivante traite de l'installation, de l'entretien, de la r\u00e9glementation, de l'\u00e9conomie et des \u00e9tudes de cas.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"click-to-view-spd-guide-part-two\"><\/span><a href=\"https:\/\/www.cnspd.com\/fr\/guide-complet-pour-le-choix-des-appareils-de-protection-contre-les-surtensions-spd-partie-deux\/\">Cliquez pour voir la deuxi\u00e8me partie du guide SPD<\/a><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>I. Comprendre les dispositifs de protection contre les surtensions (DPS) 1.1 D\u00e9finition et principe de fonctionnement Les dispositifs de protection contre les surtensions (DPS) prot\u00e8gent les \u00e9quipements \u00e9lectroniques contre les surtensions. Ces surtensions r\u00e9sultent de la foudre, de la commutation de syst\u00e8mes ou de d\u00e9fauts. Bien que br\u00e8ves, elles sont porteuses d'une grande \u00e9nergie. Les dispositifs de protection contre les surtensions fournissent un chemin \u00e0 faible imp\u00e9dance qui dirige en toute s\u00e9curit\u00e9 le courant de surtension vers la terre. Les normes CEI garantissent que les parafoudres limitent les surtensions \u00e0...<\/p>","protected":false},"author":18,"featured_media":26956,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1,488,422],"tags":[],"class_list":["post-26955","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","category-surge-protection","category-industry-news"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Guide to Choosing Surge Protective Devices<\/title>\n<meta name=\"description\" content=\"This blog is about Guide to Choosing Surge Protective Devices . 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