{"id":140546,"date":"2017-10-26T22:31:44","date_gmt":"2017-10-26T22:31:44","guid":{"rendered":"https:\/\/\/des-alimentations-ac-dc-a-haute-densite-dans-des-boitiers-a-cadre-ouvert\/"},"modified":"2017-10-26T22:31:44","modified_gmt":"2017-10-26T22:31:44","slug":"des-alimentations-ac-dc-a-haute-densite-dans-des-boitiers-a-cadre-ouvert","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/des-alimentations-ac-dc-a-haute-densite-dans-des-boitiers-a-cadre-ouvert\/","title":{"rendered":"Des alimentations AC-DC \u00e0 haute densit\u00e9 dans des bo\u00eetiers \u00e0 cadre ouvert"},"content":{"rendered":"<p>Les familles <a href=\"http:\/\/www.cui.com\/product\/power\/ac-dc-power-supplies\/chassis-mount\/vof-275-series\">VOF-275<\/a>, <a href=\"http:\/\/www.cui.com\/product\/power\/ac-dc-power-supplies\/chassis-mount\/vof-350-series\">VOF-350<\/a>, et <a href=\"http:\/\/www.cui.com\/product\/power\/ac-dc-power-supplies\/chassis-mount\/vof-550-series\">VOF-550<\/a> sont log\u00e9es dans des petits bo\u00eetiers compacts mesurant \u00e0 peine 3 x 5 x 0,75 pouces (76 x 127 x 19 mm) avec des densit\u00e9s de puissance \u00e9lev\u00e9es atteignant 24,4 W\/in<sup>3<\/sup>. Caract\u00e9ris\u00e9es \u00e9galement par des forts rendements allant jusqu&rsquo;\u00e0 94% et une consommation \u00e0 vide aussi faible que 0,5 W, ces alimentations AC-DC \u00e0 cadre ouvert sont id\u00e9ales pour les \u00e9quipements IT, les applications industrielles et de t\u00e9l\u00e9communications o\u00f9 l&rsquo;occupation de l&rsquo;espace et la consommation d&rsquo;\u00e9nergie sont des pr\u00e9occupations majeures.<\/p>\n<p>Les trois nouvelles s\u00e9ries VOF offrent, selon les mod\u00e8les, une tension de sortie de 12 \u00e0 58 Vdc et acceptent une tension d&rsquo;entr\u00e9e universelle comprise entre 80 jusqu&rsquo;\u00e0 264 Vac. Conform\u00e9ment aux normes de s\u00e9curit\u00e9 UL et EN 60950-1, les blocs d&rsquo;alimentation r\u00e9pondent aux exigences EN 55032 B pour les \u00e9missions par conduction et rayonnement. Tous les mod\u00e8les sont dot\u00e9s d\u2019une correction du facteur de puissance, d\u2019une sortie pour ventilateur de 12 Vdc\/500 mA et des protections contre les surtensions, les surintensit\u00e9s et les courts-circuits.<\/p>\n<p>Les temp\u00e9ratures de fonctionnement varient \u00e0 pleine charge de -40 \u00e0 +50\u00b0C avec un refroidissement par air forc\u00e9, voire jusqu&rsquo;\u00e0 +70\u00b0C au prix d&rsquo;un d\u00e9classement de 50%. Ces alimentations AC-DC \u00e0 haute densit\u00e9 affichent \u00e9galement un MTBF de 3,37 millions d&rsquo;heures, calcul\u00e9 selon Telcordia SR-332 Issue 3.<\/p>\n<p><a href=\"http:\/\/www.cui.com\">www.cui.com<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Le Power Group de CUI  a annonc\u00e9 l&rsquo;ajout de mod\u00e8les 275 W, 350 W et 550 W \u00e0 sa famille VOF d&rsquo;alimentations AC-DC \u00e0 cadre ouvert.<\/p>\n","protected":false},"author":9,"featured_media":140547,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[881],"tags":[],"domains":[47],"ppma_author":[1141],"class_list":["post-140546","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Des alimentations AC-DC \u00e0 haute densit\u00e9 dans des bo\u00eetiers 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