{"id":6894,"date":"2025-04-09T07:04:10","date_gmt":"2025-04-09T07:04:10","guid":{"rendered":"https:\/\/busbarmanufacturer.com\/?p=6894"},"modified":"2025-05-21T06:01:07","modified_gmt":"2025-05-21T06:01:07","slug":"insulated-vs-uninsulated-copper-busbars","status":"publish","type":"post","link":"https:\/\/busbarmanufacturer.com\/fr\/insulated-vs-uninsulated-copper-busbars\/","title":{"rendered":"Barres omnibus en cuivre isol\u00e9es ou non isol\u00e9es\u00a0: optimisation pour le syst\u00e8me \u00e9lectrique"},"content":{"rendered":"<div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-1 fusion-flex-container nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start fusion-flex-justify-content-center fusion-flex-content-wrap\" style=\"max-width:1216.8px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-0 fusion_builder_column_1_1 1_1 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:100%;--awb-margin-top-large:0px;--awb-spacing-right-large:1.92%;--awb-margin-bottom-large:70px;--awb-spacing-left-large:1.92%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-text fusion-text-1\" style=\"--awb-text-color:var(--awb-color7);--awb-margin-top:20px;\"><p>In the field of power transmission, <a href=\"https:\/\/busbarmanufacturer.com\/fr\/copper-bus-bar\/\"><span style=\"color: #339966;\"><strong>barres omnibus en cuivre<\/strong> <\/span><\/a>as \u201cenergy arteries\u201d undertake more than 90% of the distribution cabinet conductive tasks. This article analyzes the conductivity, safety level, application scenarios, and other five dimensions of insulated\/non-insulated copper busbars and combines the IEEE standards and practice cases of domestic leading enterprises to reveal the differences in the functional positioning of the two in the power system. The study shows that uninsulated copper busbar dominates the primary circuit by virtue of the current density advantage of 2.68 A\/mm\u00b2, while <span style=\"color: #339966;\"><a style=\"color: #339966;\" href=\"https:\/\/busbarmanufacturer.com\/fr\/insulated-bus-bar\/\"><strong>jeu de barres en cuivre isol\u00e9<\/strong><\/a> <\/span>r\u00e9alise la perc\u00e9e de la r\u00e9sistance \u00e0 la tension de 42 kV gr\u00e2ce au PTFE et \u00e0 d&#039;autres mat\u00e9riaux pour devenir le garde de s\u00e9curit\u00e9 du circuit secondaire.<\/p>\n<h2 id=\"iii-application-scenario-differentiation-mapping\"><span style=\"color: #339966;\">Diff\u00e9rence dans <\/span><span style=\"color: #339966;\">Conductivit\u00e9<\/span><\/h2>\n<p>Les barres omnibus en cuivre non isol\u00e9es sont fabriqu\u00e9es en cuivre de haute puret\u00e9, avec une densit\u00e9 de courant de 2,68 \u00e0 2,12 A\/mm\u00b2, et leur conception \u00e0 section rectangulaire r\u00e9alise une dissipation naturelle de la chaleur en augmentant la surface, ce qui est particuli\u00e8rement adapt\u00e9 aux sc\u00e9narios de transmission \u00e0 courant \u00e9lev\u00e9 de plus de 4000 A. En revanche, la barre omnibus en cuivre isol\u00e9e, en raison de l&#039;imp\u00e9dance accrue du rev\u00eatement de surface, dans la m\u00eame section transversale, r\u00e9duit le flux de t\u00e9l\u00e9chargement d&#039;environ 15%, mais gr\u00e2ce \u00e0 la structure tubulaire creuse, l&#039;innovation peut \u00eatre contr\u00f4l\u00e9e par le coefficient d&#039;effet de peau de KF \u2264 1, nettement meilleur que la barre omnibus en cuivre rectangulaire de KF \u2265 1,8.<\/p>\n<\/div>\n<div class=\"table-1\">\n<table width=\"100%\">\n<thead>\n<tr>\n<th align=\"left\">Param\u00e8tres<\/th>\n<th align=\"left\">Barre omnibus en cuivre non isol\u00e9e<\/th>\n<th align=\"left\">Barre omnibus en cuivre isol\u00e9e<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td align=\"left\">Densit\u00e9 de courant (A\/mm\u00b2)<\/td>\n<td align=\"left\">2,68 (\u0424100\u00d75mm)<\/td>\n<td align=\"left\">2.12 (avec isolation)<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">Augmentation de la temp\u00e9rature (\u0394T)<\/td>\n<td align=\"left\">\u2265 70\u00a0000<\/td>\n<td align=\"left\">\u2264 40\u00a0000<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">R\u00e9sistance au courant de court-circuit (kA\/4s)<\/td>\n<td align=\"left\">160<\/td>\n<td align=\"left\">200<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<div class=\"fusion-text fusion-text-2\" style=\"--awb-text-color:var(--awb-color7);--awb-margin-top:20px;\"><h2><span style=\"color: #339966;\">Diff\u00e9rence dans <\/span><span style=\"color: #339966;\">syst\u00e8me de protection de s\u00e9curit\u00e9<\/span><\/h2>\n<p>Les jeux de barres en cuivre non isol\u00e9s reposent sur une distance d&#039;isolement dans l&#039;air de 125 mm (norme CEI 61439-2)\u00a0; il existe un risque de fuite en milieu humide. De plus, nos jeux de barres en cuivre isol\u00e9s b\u00e9n\u00e9ficient de trois couches de protection\u00a0:<\/p>\n<ul>\n<li>Substrat PTFE de 0,5 mm (r\u00e9sistance \u00e0 la temp\u00e9rature -250\u2103~+250\u2103)<\/li>\n<li>couche de blindage en ruban de cuivre mise \u00e0 la terre (potentiel de surface z\u00e9ro)<\/li>\n<li>Rev\u00eatement en r\u00e9sine \u00e9poxy (r\u00e9sistance \u00e0 une tension IF de 50 kV), assurant une protection contre les intemp\u00e9ries. Des exp\u00e9riences ont montr\u00e9 que les barres omnibus en cuivre rev\u00eatues de r\u00e9sine \u00e9poxy de 2 mm peuvent encore passer le test de tenue \u00e0 une tension de 50 kV avec un espacement transversal de 0 mm.<\/li>\n<\/ul>\n<h2 id=\"iii-application-scenario-differentiation-mapping\"><span style=\"color: #339966;\">Diff\u00e9rence dans les sc\u00e9narios d&#039;application\u00a0<\/span><\/h2>\n<p>Circuit primaire pr\u00e9f\u00e9r\u00e9 :<br \/>\nLes jeux de barres en cuivre non isol\u00e9s dominent les sc\u00e9narios tels que les sous-stations de 110 kV, avec les avantages suivants :<\/p>\n<ul>\n<li>Aucun support requis pour des port\u00e9es allant jusqu&#039;\u00e0 9 m\u00e8tres<\/li>\n<li>R\u00e9sistance m\u00e9canique de 294 MPa pour garantir les performances sismiques (contre 196 MPa pour le cuivre isol\u00e9).<\/li>\n<li>Convient aux locaux de distribution avec beaucoup d&#039;espace.<\/li>\n<\/ul>\n<p>Innovation du circuit secondaire :<br \/>\nLes barres omnibus en cuivre isol\u00e9es \u00e9largissent les limites des applications gr\u00e2ce \u00e0 l&#039;it\u00e9ration technologique :<\/p>\n<ul>\n<li>Packs de batteries pour v\u00e9hicules \u00e0 \u00e9nergie nouvelle (capacit\u00e9 de transport de courant de 6000 A).<\/li>\n<li>Conception anti-arc pour onduleurs photovolta\u00efques.<\/li>\n<li>Appareillage compact (espace libre r\u00e9duit de 125 mm \u00e0 65 mm).<\/li>\n<\/ul>\n<h2 id=\"iv-full-life-cycle-cost-modeling\"><span style=\"color: #339966;\">Diff\u00e9rence de co\u00fbt<\/span><\/h2>\n<p>Bien que le co\u00fbt d&#039;achat d&#039;un jeu de barres en cuivre isol\u00e9 soit 30-50% plus \u00e9lev\u00e9, sa valeur se refl\u00e8te dans :<\/p>\n<ul>\n<li>Co\u00fbts de maintenance r\u00e9duits : \u00e9viter le risque d&#039;\u00e9clatement des flacons en c\u00e9ramique (72% r\u00e9duction du taux de d\u00e9faillance,)<\/li>\n<li>Gain de place : taille de l&#039;appareillage de commutation 40,5 kV r\u00e9duite de 40%<\/li>\n<li>Diff\u00e9rence de dur\u00e9e de vie : dur\u00e9e de vie de conception du jeu de barres en cuivre isol\u00e9 \u2265 30 ans, bien plus que celle du jeu de barres en cuivre nu de 15 \u00e0 20 ans.<\/li>\n<\/ul>\n<h2 id=\"v-technology-evolution-trend-research-and-judgment\"><span style=\"color: #339966;\">Tendance technologique<\/span><\/h2>\n<p>Les donn\u00e9es de l\u2019industrie montrent :<\/p>\n<ol>\n<li>Perc\u00e9e mat\u00e9rielle : les barres omnibus en cuivre rev\u00eatues de graph\u00e8ne augmenteront la conductivit\u00e9 de 20% et r\u00e9aliseront une auto-isolation.<\/li>\n<li>Innovation technologique : la pulv\u00e9risation \u00e9lectrostatique remplace les gaines thermor\u00e9tractables, ce qui entra\u00eene une erreur d&#039;\u00e9paisseur de la couche isolante \u2264 0,1 mm.<\/li>\n<li>Mise \u00e0 niveau standard : la norme IEEE C37.20.2 impose l&#039;utilisation de fils de cuivre isol\u00e9s vulcanis\u00e9s \u00e0 l&#039;\u00e9poxy dans les zones critiques.<\/li>\n<\/ol>\n<h2><span style=\"color: #339966;\">Conclusion<\/span><\/h2>\n<p>Dans le contexte de modernisation des syst\u00e8mes \u00e9lectriques, les jeux de barres en cuivre, isol\u00e9s et non isol\u00e9s, ne se substituent pas, mais jouent un r\u00f4le compl\u00e9mentaire. Il est recommand\u00e9 de privil\u00e9gier l&#039;utilisation de jeux de barres en cuivre nu de grande section dans le circuit primaire (capacit\u00e9 de transport de courant &gt; 4\u00a0000 A). Les jeux de barres en cuivre isol\u00e9s permettent de constituer un syst\u00e8me de double protection dans les zones \u00e0 forte densit\u00e9 de population, les nouvelles installations \u00e9nerg\u00e9tiques et autres situations. Avec la mise en \u0153uvre de la nouvelle norme nationale GB\/T 5585.1-2025, <strong><a href=\"https:\/\/busbarmanufacturer.com\/fr\/insulated-bus-bar\/\"><span style=\"color: #339966;\">jeu de barres en cuivre isol\u00e9<\/span> <\/a><\/strong>la part de march\u00e9 devrait passer de 35% actuellement \u00e0 52% en 2028.<\/p>\n<\/div><\/div><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>Nam lacinia arcu tortor, nec luctus nibh dignissim eu nulla sit amet maximus.<\/p>","protected":false},"author":1,"featured_media":6895,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"content-type":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"cybocfi_hide_featured_image":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-6894","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Insulated vs. uninsulated copper busbars: optimization for power system<\/title>\n<meta name=\"description\" content=\"Compare insulated vs bare copper busbars: current density up to 2.68A\/mm\u00b2, thermal management, safety standards (IEEE C37.20.2). 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