{"id":7342,"date":"2025-11-27T08:55:34","date_gmt":"2025-11-27T07:55:34","guid":{"rendered":"https:\/\/mapelsl.com\/?post_type=notcies&#038;p=7342"},"modified":"2025-11-25T09:21:08","modified_gmt":"2025-11-25T08:21:08","slug":"proteccio-diferencial","status":"publish","type":"notcies","link":"https:\/\/mapelsl.com\/es\/notcies\/proteccio-diferencial\/","title":{"rendered":"Protecci\u00f3 diferencial: qu\u00e8 \u00e9s i per qu\u00e8 \u00e9s clau en instal\u00b7lacions modernes"},"content":{"rendered":"<h3><b><span lang=\"CA\">Per qu\u00e8 serveix un interruptor diferencial?<\/span><\/b><\/h3>\n<h2><b><span lang=\"CA\">Els diferencials s\u00f3n essencials per protegir les persones davant corrents de fuga. Quan detecten que part del corrent no torna pel conductor neutre, interrompen el subministrament per evitar riscos d\u2019electrocuci\u00f3 o danys a la instal\u00b7laci\u00f3.<\/span><\/b><\/h2>\n<p>&nbsp;<\/p>\n<h3>Nous reptes amb les instal\u00b7lacions modernes<\/h3>\n<p>Els equips amb electr\u00f2nica (LED, carregadors, variadors, SAIs\u2026) generen corrents m\u00e9s complexos, amb components d\u2019alta freq\u00fc\u00e8ncia o cont\u00ednues. Aix\u00f2 pot originar:<\/p>\n<blockquote><p>\u2013 <strong>Salts intempestius<\/strong> sense defecte real.<br \/>\n\u2013 <strong>Simpatia<\/strong>, \u00e9s a dir, diversos diferencials que salten en cadena nom\u00e9s per compartir el terra com\u00fa (esquema a la p\u00e0gina 1) .<\/p><\/blockquote>\n<p>&nbsp;<\/p>\n<h3><a href=\"https:\/\/mapelsl.com\/notcies\/proteccio-diferencial\/mapel-2025-article-proteccio-diferencial-02\/\" rel=\"attachment wp-att-7347\"><img loading=\"lazy\" decoding=\"async\" class=\"size-large wp-image-7347 alignnone\" src=\"https:\/\/mapelsl.com\/wp-content\/uploads\/2025\/11\/Mapel-2025-Article-Proteccio-diferencial-02-1024x529.jpg\" alt=\"\" width=\"1024\" height=\"529\" srcset=\"https:\/\/mapelsl.com\/wp-content\/uploads\/2025\/11\/Mapel-2025-Article-Proteccio-diferencial-02-1024x529.jpg 1024w, https:\/\/mapelsl.com\/wp-content\/uploads\/2025\/11\/Mapel-2025-Article-Proteccio-diferencial-02-300x155.jpg 300w, https:\/\/mapelsl.com\/wp-content\/uploads\/2025\/11\/Mapel-2025-Article-Proteccio-diferencial-02-768x396.jpg 768w, https:\/\/mapelsl.com\/wp-content\/uploads\/2025\/11\/Mapel-2025-Article-Proteccio-diferencial-02.jpg 1240w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/h3>\n<p>&nbsp;<\/p>\n<h3>La import\u00e0ncia de la selectivitat<\/h3>\n<p>La selectivitat assegura que, davant una incid\u00e8ncia, nom\u00e9s actu\u00ef el diferencial m\u00e9s proper al problema, evitant talls innecessaris.<br \/>\nPot ser per sensibilitat, temps de resposta o pel tipus de diferencial utilitzat .<\/p>\n<h3><\/h3>\n<h3>Tipus de diferencials i aplicacions<\/h3>\n<p>Segons la norma IEC 60755, trobem quatre tipologies principals:<\/p>\n<blockquote><p>AC \u2013 Per circuits simples sense electr\u00f2nica; \u00fas cada vegada menor.<br \/>\nA \u2013 Accepten corrent altern i polsant; adequats per electr\u00f2nica b\u00e0sica.<br \/>\nF \u2013 Detecten altes freq\u00fc\u00e8ncies; ideals per variadors i motors electr\u00f2nics.<br \/>\nB \u2013 Detecten totes les formes de corrent, incloses cont\u00ednues suaus i molt altes freq\u00fc\u00e8ncies; necessaris en fotovoltaica, SAIs i equips m\u00e8dics .<\/p>\n<p>&nbsp;<\/p><\/blockquote>\n<p>Existeixen tamb\u00e9 versions G i S, amb petits retards per evitar salts innecessaris, i diferencials electr\u00f2nics que permeten visualitzar o programar el nivell de fuga i temps de resposta (p. 3) .<\/p>\n<p>Escollir el tipus de diferencial adequat \u00e9s clau per evitar interrupcions, millorar la fiabilitat i garantir la seguretat de les persones i de la instal\u00b7laci\u00f3. Con\u00e8ixer els fen\u00f2mens de simpatia, selectivitat i les caracter\u00edstiques de cada tipologia \u00e9s imprescindible per dissenyar instal\u00b7lacions modernes segures i estables.<\/p>\n","protected":false},"featured_media":7343,"template":"","etiquetes":[141],"class_list":["post-7342","notcies","type-notcies","status-publish","has-post-thumbnail","hentry","etiquetes-comunitat"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v17.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<meta name=\"description\" content=\"Els diferencials s\u00f3n essencials per protegir les persones davant corrents de fuga, interrompen el subministrament per evitar riscos.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/mapelsl.com\/es\/notcies\/proteccio-diferencial\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Protecci\u00f3 diferencial: qu\u00e8 \u00e9s i per qu\u00e8 \u00e9s clau en instal\u00b7lacions modernes - 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