{"id":157797,"date":"2021-12-01T14:24:28","date_gmt":"2021-12-01T14:24:28","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/alimentation-de-700-w-refroidie-par-conduction\/"},"modified":"2021-12-01T14:24:28","modified_gmt":"2021-12-01T14:24:28","slug":"alimentation-de-700-w-refroidie-par-conduction","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/alimentation-de-700-w-refroidie-par-conduction\/","title":{"rendered":"Alimentation de 700\u00a0W refroidie par conduction"},"content":{"rendered":"<p>L&rsquo;alimentation OFI700A d\u00e9livre des niveaux de performances \u00e9lev\u00e9s pour une plage de temp\u00e9rature du socle de&nbsp;-40 \u00e0 +95&nbsp;\u00b0C, sans ventilateur. L&rsquo;alimentation fonctionne sur une plage de tension d\u2019entr\u00e9e \u00e9tendue et universelle comprise entre 85 et 264&nbsp;V&nbsp;AC, avec un facteur de correction de puissance (PFC) d\u2019un coefficient de 0,95\/0,92 (110 V AC\/230 VAC). Elle est disponible avec des tensions de sortie CC de 12&nbsp;V, 28&nbsp;V (r\u00e9glable jusqu&rsquo;\u00e0 24&nbsp;V) ou 48&nbsp;V&nbsp;CC. Une tension suppl\u00e9mentaire de 12&nbsp;V est \u00e9galement fournie. Pour les applications aliment\u00e9es \u00e0 l&rsquo;aide d&rsquo;un bus CC, par exemple pour les \u00e9quipements miniers, l&rsquo;alimentation OFI700A fonctionne avec des tensions comprises entre 120 et 350 VCC.<\/p>\n<p>Pour certaines applications o\u00f9 il est impossible, voire interdit d&rsquo;utiliser une ventilation active. Dans les environnements agressifs, ou dans les applications o\u00f9 le niveau de fiabilit\u00e9 requis impose d&rsquo;\u00e9liminer tout risque de d\u00e9faillance, les ventilateurs et les dispositifs de soufflage ne sont pas autoris\u00e9s. Les bo\u00eetiers herm\u00e9tiques comme ceux adapt\u00e9s \u00e0 la d\u00e9coupe au laser en sont un exemple. Il existe \u00e9galement une demande croissante pour des \u00e9quipements install\u00e9s dans les salles de contr\u00f4le, voire m\u00eame dans les&nbsp;bureaux, afin de limiter les nuisances sonores.<\/p>\n<p>Pour les applications qui n\u00e9cessitent une redondance 1+1, il est possible de connecter deux unit\u00e9s en parall\u00e8le, en ajoutant une diode externe de protection. La diode est une solution simple, mais elle accro\u00eet les pertes de puissance qui peuvent atteindre jusqu&rsquo;\u00e0 30 W en fonction du courant de sortie. Aussi, pour maintenir un niveau \u00e9lev\u00e9 d&rsquo;efficacit\u00e9 en mode redondant, une version de l&rsquo;alimentation OFI700A est disponible avec des circuits de fonction OU utilisant une technologie \u00e0 transistor \u00e0 effet de champ. Dans cette version, les pertes de puissance sont r\u00e9duite \u00e0 moins de1,5 W.<\/p>\n<p>En terme de s\u00e9curit\u00e9, l&rsquo;alimentation OFI700A poss\u00e8de une isolation E\/S&nbsp; de 3 000 V AC et IN\/FG de 2 000 V AC. L&rsquo;isolation sortie &#8211; FG est de 500 V AC. Sont&nbsp;inclusent, une protection contre les surintensit\u00e9s avec reprise automatique, une protection contre les surtensions et les temp\u00e9ratures excessives.<\/p>\n<p>La carte de l&rsquo;alimentation OFI700A pr\u00e9voit un acc\u00e8s facile aux fonctions auxiliaires par le biais de connecteurs sur la carte&nbsp;: t\u00e9l\u00e9commande, d\u00e9tection de la tension de sortie, DC-OK, mode de fonctionnement avec inverseur (IOG) et tension 12 V auxiliaire.<\/p>\n<p>L&rsquo;alimentation OFI700A a subi des essais aux chocs et aux vibrations, conformes \u00e0 la norme MIL-STD-810H. \u00c0 cet \u00e9gard, les produits ont \u00e9t\u00e9 test\u00e9s \u00e0 des niveaux bien sup\u00e9rieurs aux conditions de fonctionnement normales et sont sp\u00e9cifi\u00e9s pour r\u00e9sister \u00e0 des vibrations de 20G en cours de transport.<\/p>\n<p>Dans son format sans bo\u00eetier, l&rsquo;alimentation OFI700A mesure 126 x 38 x 250 mm et p\u00e8se 0,95 kg max. Un capot m\u00e9tallique est propos\u00e9 en option, pour \u00e0 peine 2 mm de plus en hauteur et 150 g de poids.<\/p>\n<p>Le mod\u00e8le est certifi\u00e9 UL62368-1, C-UL (\u00e9quivalent de la norme CAN\/CSA-22.2 No.62368-1), EN62368-1<\/p>\n<p>La s\u00e9rie OFI700A b\u00e9n\u00e9ficie d&rsquo;une garantie de trois ans et est conforme aux directives europ\u00e9ennes RoHS, REACH et Basse tension. Le produit b\u00e9n\u00e9ficie des marquages UL, CE et UKCA.<\/p>\n<p><a href=\"https:\/\/www.prbx.com\/product\/ofi700a\/\" target=\"notSet\" rel=\"noopener\">Alimentation&nbsp;OFI700A<\/a><\/p>\n<p><strong>Autres articles<\/strong><\/p>\n<p><a href=\"https:\/\/www.ecinews.fr\/news\/alimentations-de-1-kw-delivrant-330-de-puissance-de-crete\" target=\"notSet\" rel=\"noopener\">Alimentations de 1 KW d\u00e9livrant 330 % de puissance de cr\u00eate<\/a><\/p>\n<p><a href=\"https:\/\/www.ecinews.fr\/news\/mini-centrale-electrique-portable\" target=\"notSet\" rel=\"noopener\">Mini-centrale \u00e9lectrique portable<\/a><\/p>\n<p><a href=\"https:\/\/www.ecinews.fr\/news\/alimentations-de-1-kw-delivrant-330-de-puissance-de-crete\" target=\"notSet\" rel=\"noopener\">Alimentations de 1 KW d\u00e9livrant 330 % de puissance de cr\u00eate<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Powerbox annonce la commercialisation d&rsquo;une nouvelle alimentation &#8211; OFI700A &#8211; de 700\u00a0W pour les applications industrielles, optimis\u00e9e pour le refroidissement par conduction<\/p>\n","protected":false},"author":11,"featured_media":157798,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[881],"tags":[],"domains":[47],"ppma_author":[1143],"class_list":["post-157797","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Alimentation de 700\u00a0W refroidie par conduction ...<\/title>\n<meta name=\"description\" content=\"Powerbox annonce la commercialisation d&#039;une nouvelle alimentation - OFI700A - de 700\u00a0W pour les applications industrielles, optimis\u00e9e pour le...\" \/>\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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