{"id":37616,"date":"2022-08-22T11:42:22","date_gmt":"2022-08-22T09:42:22","guid":{"rendered":"https:\/\/at3w.com\/?page_id=37616"},"modified":"2025-11-05T16:00:45","modified_gmt":"2025-11-05T15:00:45","slug":"sobretensoes-permanentes","status":"publish","type":"page","link":"https:\/\/at3w.com\/pt-pt\/smart-lightning\/sobretensoes-permanentes\/","title":{"rendered":"Prote\u00e7\u00e3o sobretens\u00f5es permanentes"},"content":{"rendered":"

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Sobretens\u00f5es
\nPermanentes<\/h2><\/div>
Com a finalidade de proteger as instala\u00e7\u00f5es recetoras contra os efeitos das sobretens\u00f5es permanentes<\/span>, devem ser instalados dispositivos de prote\u00e7\u00e3o contra sobretens\u00f5es que atuem desligando a instala\u00e7\u00e3o alimentada pela rede el\u00e9trica<\/span> que est\u00e1 sujeita \u00e0 sobretens\u00e3o.<\/div><\/div>[\/vc_column_inner][\/vc_row_inner]
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\n\t\"null\"\n<\/div><\/div><\/div>Aumento de tens\u00e3o<\/span> <\/a> <\/div>
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Sobretens\u00f5es
\nPermanentes<\/h2>\n

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As sobretens\u00f5es permanentes ou temporais s\u00e3o aumentos de tens\u00e3o acima de 10% do valor nominal da rede de distribui\u00e7\u00e3o que se mant\u00e9m durante v\u00e1rios ciclos ou de forma permanente.<\/p>\n

S\u00e3o originadas pela descompensa\u00e7\u00e3o das fases, normalmente causadas pela rutura do neutro, defeitos na conex\u00e3o do condutor neutro ou falhas nos centros de transforma\u00e7\u00e3o.<\/p>\n

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Que danos podem as sobretens\u00f5es permanentes<\/code> causar?<\/h2>\n

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As instala\u00e7\u00f5es el\u00e9tricas s\u00e3o as mais propensas a sofrer danos causados por sobretens\u00f5es<\/a> permanentes. A longa dura\u00e7\u00e3o da sobretens\u00e3o pode levar \u00e0 perda do servi\u00e7o do equipamento el\u00e9trico e eletr\u00f3nico ligado. Esta tens\u00e3o elevada afeta o equipamento, reduzindo a sua vida \u00fatil, e pode mesmo sobreaquec\u00ea-lo ao ponto de causar danos irrepar\u00e1veis ou mesmo provocar inc\u00eandios.<\/span><\/p>\n

As sobretens\u00f5es permanentes podem produzir danos na instala\u00e7\u00e3o e nos equipamentos el\u00e9tricos:
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Norma<\/h2><\/div>
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Internacionalmente, a norma de aplica\u00e7\u00e3o da prote\u00e7\u00e3o contra sobretens\u00f5es permanentes \u00e9 a EN IEC 63052:2022<\/strong> \u201cPower frequency overvoltage protective device for household and similar applications (POP)<\/em>\u201d.<\/p>\n

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Nuestra<\/code> gama de productos de protecci\u00f3n contra las sobretensiones permanentes<\/code><\/h2>\n

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Guia de sele\u00e7\u00e3o<\/h2><\/div>
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Para proteger corretamente qualquer instala\u00e7\u00e3o, Aplicaciones Tecnol\u00f3gicas publica um guia de sele\u00e7\u00e3o de prote\u00e7\u00e3o contra sobretens\u00f5es que lhe permite escolher o protetor de sobretens\u00f5es permanente adequado, respondendo a algumas perguntas simples.<\/p>\n