{"id":2506,"date":"2026-07-13T17:44:02","date_gmt":"2026-07-13T15:44:02","guid":{"rendered":"https:\/\/www.groupe-mmo.fr\/?p=2506"},"modified":"2026-07-13T17:44:03","modified_gmt":"2026-07-13T15:44:03","slug":"electrogene","status":"publish","type":"post","link":"https:\/\/www.groupe-mmo.fr\/en\/electrogene\/","title":{"rendered":"\u00e9lectrog\u00e8ne ?"},"content":{"rendered":"<p>La puissance est le premier crit\u00e8re de choix, et de valeur, d&#8217;un groupe \u00e9lectrog\u00e8ne. Un appareil sous-dimensionn\u00e9 disjonctera au moindre pic de consommation ; surdimensionn\u00e9, il co\u00fbtera plus cher \u00e0 l&#8217;achat, consommera davantage et s&#8217;usera pr\u00e9matur\u00e9ment par sous-charge. Voici comment viser juste.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">kW ou kVA : quelle diff\u00e9rence ?<\/h2>\n\n\n\n<p>Le kW mesure la puissance active r\u00e9ellement consomm\u00e9e par vos \u00e9quipements ; le kVA mesure la puissance apparente que fournit le groupe. On passe de l&#8217;un \u00e0 l&#8217;autre avec le facteur de puissance (cos phi), g\u00e9n\u00e9ralement 0,8 : kVA = kW divis\u00e9 par 0,8. Un groupe de 100 kVA d\u00e9livre donc environ 80 kW utiles.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u00c9tape 1 : additionner les puissances de vos \u00e9quipements<\/h2>\n\n\n\n<p>Listez tous les appareils \u00e0 alimenter simultan\u00e9ment et additionnez leurs puissances nominales (en watts ou kW), indiqu\u00e9es sur les plaques signal\u00e9tiques. Vous obtenez la puissance de fonctionnement de base.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u00c9tape 2 : tenir compte des pics au d\u00e9marrage<\/h2>\n\n\n\n<p>Les moteurs \u00e9lectriques (pompes, compresseurs, climatisation, ascenseurs) appellent au d\u00e9marrage un courant 3 \u00e0 5 fois sup\u00e9rieur \u00e0 leur r\u00e9gime normal. Ce pic doit \u00eatre couvert par le groupe, sous peine de coupure. Les appareils r\u00e9sistifs (\u00e9clairage, chauffage) ont peu de surintensit\u00e9 ; les inductifs (moteurs, pompes) exigent une r\u00e9serve importante.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u00c9tape 3 : ajouter une marge de s\u00e9curit\u00e9<\/h2>\n\n\n\n<p>Ajoutez 20 \u00e0 30 % \u00e0 votre total pour absorber les \u00e9volutions futures, \u00e9viter de faire tourner le groupe \u00e0 pleine charge en permanence et pr\u00e9server sa long\u00e9vit\u00e9. \u00c0 l&#8217;inverse, ne surdimensionnez pas \u00e0 l&#8217;exc\u00e8s : un groupe qui tourne durablement en sous-charge s&#8217;encrasse et se d\u00e9grade.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Rep\u00e8res de puissance selon l&#8217;usage<\/h2>\n\n\n\n<ul>\n<li>Commerce ou petit atelier : 10 \u00e0 60 kVA<\/li>\n\n\n\n<li>PME et b\u00e2timent tertiaire : 60 \u00e0 250 kVA<\/li>\n\n\n\n<li>Site industriel, h\u00f4pital, secours : 250 \u00e0 1000 kVA<\/li>\n\n\n\n<li>Grande industrie, data center, centrale : 1000 kVA et plus<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">En r\u00e9sum\u00e9<\/h2>\n\n\n\n<p>Bien choisir ses kVA, c&#8217;est additionner les puissances, couvrir les pics de d\u00e9marrage, puis ajouter 20 \u00e0 30 % de marge, sans tomber dans le surdimensionnement. Ce raisonnement vaut aussi bien pour acheter que pour estimer la valeur d&#8217;un groupe \u00e0 revendre : la puissance conditionne directement le prix.<\/p>\n\n\n\n<p>Vous cherchez un groupe \u00e9lectrog\u00e8ne d&#8217;occasion \u00e0 la bonne puissance, ou souhaitez revendre le v\u00f4tre ? Groupe MMO ach\u00e8te et vend tous types de groupes \u00e9lectrog\u00e8nes d&#8217;occasion, de 20 \u00e0 plus de 5000 kVA. Demandez votre estimation gratuite.<\/p>","protected":false},"excerpt":{"rendered":"<p>La puissance est le premier crit\u00e8re de choix, et de valeur, d&#8217;un groupe \u00e9lectrog\u00e8ne. Un appareil sous-dimensionn\u00e9 disjonctera au moindre pic de consommation ; surdimensionn\u00e9, il co\u00fbtera plus cher \u00e0 l&#8217;achat, consommera davantage et s&#8217;usera pr\u00e9matur\u00e9ment par sous-charge. Voici comment viser juste. kW ou kVA : quelle diff\u00e9rence ? Le kW mesure la puissance active [&hellip;]<\/p>","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}}},"categories":[1],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/www.groupe-mmo.fr\/en\/wp-json\/wp\/v2\/posts\/2506"}],"collection":[{"href":"https:\/\/www.groupe-mmo.fr\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.groupe-mmo.fr\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.groupe-mmo.fr\/en\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.groupe-mmo.fr\/en\/wp-json\/wp\/v2\/comments?post=2506"}],"version-history":[{"count":1,"href":"https:\/\/www.groupe-mmo.fr\/en\/wp-json\/wp\/v2\/posts\/2506\/revisions"}],"predecessor-version":[{"id":2507,"href":"https:\/\/www.groupe-mmo.fr\/en\/wp-json\/wp\/v2\/posts\/2506\/revisions\/2507"}],"wp:attachment":[{"href":"https:\/\/www.groupe-mmo.fr\/en\/wp-json\/wp\/v2\/media?parent=2506"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.groupe-mmo.fr\/en\/wp-json\/wp\/v2\/categories?post=2506"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.groupe-mmo.fr\/en\/wp-json\/wp\/v2\/tags?post=2506"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}