{"id":118530,"date":"2018-06-11T22:02:44","date_gmt":"2018-06-11T22:02:44","guid":{"rendered":"https:\/\/\/lem-rend-la-mesure-de-tension-plus-compacte\/"},"modified":"2018-06-11T22:02:44","modified_gmt":"2018-06-11T22:02:44","slug":"lem-rend-la-mesure-de-tension-plus-compacte","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/lem-rend-la-mesure-de-tension-plus-compacte\/","title":{"rendered":"LEM rend la mesure de tension plus compacte"},"content":{"rendered":"

Bien qu\u2019atteignant de tr\u00e8s hauts niveaux d\u2019isolation avec une tension d\u2019isolation de s\u00e9curit\u00e9 de 4,2 kV, le capteur DVC 1000-P est extr\u00eamement compact, mesurant seulement 37 x 43 x 23,5 mm, et peut \u00eatre mont\u00e9 sur une carte \u00e9lectronique, repr\u00e9sentant un volume total de seulement 37,4 cm3. Les capteurs habituellement utilis\u00e9s pour des mesures nominales identiques,  galvaniquement isol\u00e9s, sont encombrants, tandis que le DVC 1000-P permet un gain d\u2019espace non n\u00e9gligeable. Il affiche \u00e9galement un haut degr\u00e9 de pr\u00e9cision et une grande stabilit\u00e9 en temp\u00e9rature.<\/p>\n

LEM a d\u00e9velopp\u00e9 le DVC 1000-P pour r\u00e9pondre en tous points aux exigences du r\u00e9f\u00e9rentiel IRIS (International Railway Industry Standard), offrant aux ing\u00e9nieurs de l\u2019industrie ferroviaire, qui travaillent avec du mat\u00e9riel roulant ainsi qu\u2019 avec des sous-stations, un nouveau capteur polyvalent capable de mesurer la tension du DC link, une tension de sortie sur un onduleur, une tension d\u2019entr\u00e9e des convertisseurs \u00e0 4 quadrants ou une tension de batterie. Les particularit\u00e9s du capteur de tension DVC 1000-P en font un excellent outil pour un large \u00e9ventail de mesures, de basse \u00e0 moyenne tension, dans diff\u00e9rents secteurs industriels.<\/p>\n

Les capteurs DVC 1000-P mesurent des tensions via une connexion directe sur le c\u00f4t\u00e9 primaire, \u00e0 travers un r\u00e9seau interne compos\u00e9 de r\u00e9sistances et de quelques composants, permettant au signal d\u2019alimenter un amplificateur d\u2019isolation. Le signal isol\u00e9 est r\u00e9cup\u00e9r\u00e9 puis trait\u00e9 afin de fournir une tension aux connexions de sortie du capteur, qui est l\u2019exacte repr\u00e9sentation de la tension primaire. Aucun composant suppl\u00e9mentaire n\u2019est n\u00e9cessaire pour l\u2019utiliser, il suffit de le connecter \u00e0 la tension \u00e0 mesurer.<\/p>\n

Le DVC 1000-P offre une excellente pr\u00e9cision globale, de l\u2019ordre de +\/- 1 % \u00e0 +25 \u00b0C, avec une grande stabilit\u00e9 en temp\u00e9rature, entra\u00eenant une pr\u00e9cision globale de +\/- 1,5 % sur une plage de temp\u00e9rature de fonctionnement comprise entre -40 \u00b0C et +85 \u00b0C. Sa bande passante (\u00e0 -3 dB) est de 47 kHz et le DVC 1000-P ne consomme que 35 mA avec une tension primaire nulle lorsqu\u2019il est aliment\u00e9 en +5 VDC. <\/p>\n

Avec cet encombrement r\u00e9duit, le DVC 1000-P ne p\u00e8se que 22 g et est plus de 60 % plusl\u00e9ger que les capteurs d\u00e9j\u00e0 sur le march\u00e9 con\u00e7us pour une plage de tensions similaire. Parmi ses autres caract\u00e9ristiques cl\u00e9s, on peut citer le fait qu\u2019il est conforme \u00e0 de nombreuses normes de s\u00e9curit\u00e9 internationalement reconnues, en plus de respecter les sp\u00e9cifications du r\u00e9f\u00e9rentiel IRIS.  Il affiche \u00e9galement un temps de r\u00e9ponse de 10 \u00b5s \u00e0 90 % de la tension nominale.<\/p>\n

Con\u00e7u par LEM conform\u00e9ment aux derni\u00e8res normes actuelles pour les applications industrielles et ferroviaires, les DVC 1000-P utilisent des mat\u00e9riaux conformes \u00e0 toutes les normes en vigueur en mati\u00e8re de feux fum\u00e9es obligatoires pour les applications ferroviaires. Le capteur DVC 1000-P porte le marquage CE et est livr\u00e9 avec une garantie de cinq ans, comme le sont tous les produits LEM destin\u00e9s \u00e0 des applications ferroviaires.<\/p>\n

www.lem.com<\/a><\/p>\n

LEM lance un site Web facilitant les recherches d\u2019informations produit<\/a><\/h3>\n

LEM r\u00e9invente la technologie Fluxgate pour la mesure ultra pr\u00e9cise de courant <\/a><\/h3>\n

Les capteurs de courant \u00e0 effet Hall LxSR mat\u00e9rialisent une v\u00e9ritable avanc\u00e9e technologique<\/a><\/h3>\n","protected":false},"excerpt":{"rendered":"

LEM pr\u00e9sente le mod\u00e8le DVC 1000-P pour la mesure de tensions nominales isol\u00e9es pour les applications traction et industrielles. Ce composant mesure une tension nominale de 1000 Veff et int\u00e8gre une technologie sp\u00e9cifique d\u2019amplificateur d\u2019isolation.<\/p>\n","protected":false},"author":9,"featured_media":118531,"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-118530","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"LEM rend la mesure de tension plus compacte ...<\/title>\n<meta name=\"description\" content=\"LEM pr\u00e9sente le mod\u00e8le DVC 1000-P pour la mesure de tensions nominales isol\u00e9es pour les applications traction et industrielles. 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