{"id":26960,"date":"2024-11-15T14:51:00","date_gmt":"2024-11-15T06:51:00","guid":{"rendered":"https:\/\/www.cnspd.com\/?p=26960"},"modified":"2026-04-13T13:10:32","modified_gmt":"2026-04-13T05:10:32","slug":"comprehensive-guide-to-choosing-surge-protective-devices-spd-part-two","status":"publish","type":"post","link":"https:\/\/www.cnspd.com\/pt\/guia-completo-para-a-escolha-de-dispositivos-de-protecao-contra-sobretensoes-spd-parte-dois\/","title":{"rendered":"Guia completo para a escolha de dispositivos de prote\u00e7\u00e3o contra surtos (SPD) (Parte dois)"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u00cdndice<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Alternar o \u00edndice\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Alternar<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/pt\/guia-completo-para-a-escolha-de-dispositivos-de-protecao-contra-sobretensoes-spd-parte-dois\/#click-to-view-spd-guide-part-one\" >Clique para ver a primeira parte do Guia do DPS<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/pt\/guia-completo-para-a-escolha-de-dispositivos-de-protecao-contra-sobretensoes-spd-parte-dois\/#v-spd-installation-and-maintenance\" >V. Instala\u00e7\u00e3o e manuten\u00e7\u00e3o do DPS<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/pt\/guia-completo-para-a-escolha-de-dispositivos-de-protecao-contra-sobretensoes-spd-parte-dois\/#51-proper-spd-placement-and-installation-method\" >5.1 Coloca\u00e7\u00e3o correta do DPS e m\u00e9todo de instala\u00e7\u00e3o<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/pt\/guia-completo-para-a-escolha-de-dispositivos-de-protecao-contra-sobretensoes-spd-parte-dois\/#52-importance-of-regular-spd-inspection\" >5.2 Import\u00e2ncia da inspe\u00e7\u00e3o regular do DUP<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/pt\/guia-completo-para-a-escolha-de-dispositivos-de-protecao-contra-sobretensoes-spd-parte-dois\/#vi-spd-regulations-and-standards\" >VI. Regulamentos e normas do DUP<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/pt\/guia-completo-para-a-escolha-de-dispositivos-de-protecao-contra-sobretensoes-spd-parte-dois\/#61-key-international-and-national-standards\" >6.1 Principais normas internacionais e nacionais<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/pt\/guia-completo-para-a-escolha-de-dispositivos-de-protecao-contra-sobretensoes-spd-parte-dois\/#62-ensuring-spd-safety-compliance\" >6.2 Garantir a conformidade com a seguran\u00e7a do DUP<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/pt\/guia-completo-para-a-escolha-de-dispositivos-de-protecao-contra-sobretensoes-spd-parte-dois\/#vii-economic-analysis\" >VII. An\u00e1lise econ\u00f3mica<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/pt\/guia-completo-para-a-escolha-de-dispositivos-de-protecao-contra-sobretensoes-spd-parte-dois\/#71-balancing-investment-and-long-term-savings\" >7.1 Equil\u00edbrio entre investimento e poupan\u00e7a a longo prazo<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/pt\/guia-completo-para-a-escolha-de-dispositivos-de-protecao-contra-sobretensoes-spd-parte-dois\/#72-comparing-spd-cost-effectiveness\" >7.2 Compara\u00e7\u00e3o da rela\u00e7\u00e3o custo-efic\u00e1cia do DOCUP<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/pt\/guia-completo-para-a-escolha-de-dispositivos-de-protecao-contra-sobretensoes-spd-parte-dois\/#viii-case-studies\" >VIII. Estudos de caso<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/pt\/guia-completo-para-a-escolha-de-dispositivos-de-protecao-contra-sobretensoes-spd-parte-dois\/#81-successful-spd-implementation\" >8.1 Implementa\u00e7\u00e3o bem sucedida do DUP<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/pt\/guia-completo-para-a-escolha-de-dispositivos-de-protecao-contra-sobretensoes-spd-parte-dois\/#82-common-mistakes-and-how-to-avoid-them\" >8.2 Erros comuns e como evit\u00e1-los<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/pt\/guia-completo-para-a-escolha-de-dispositivos-de-protecao-contra-sobretensoes-spd-parte-dois\/#summary-of-part-two\" >Resumo da segunda parte<\/a><\/li><\/ul><\/nav><\/div>\n<h3><span class=\"ez-toc-section\" id=\"click-to-view-spd-guide-part-one\"><\/span><a href=\"https:\/\/www.cnspd.com\/pt\/guia-completo-para-a-escolha-de-dispositivos-de-protecao-contra-sobretensoes-spd-parte-um\/\">Clique para ver a primeira parte do Guia do DPS<\/a><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<h2 data-start=\"124\" data-end=\"162\"><span class=\"ez-toc-section\" id=\"v-spd-installation-and-maintenance\"><\/span>V. Instala\u00e7\u00e3o e manuten\u00e7\u00e3o do DPS<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3 data-start=\"164\" data-end=\"216\"><span class=\"ez-toc-section\" id=\"51-proper-spd-placement-and-installation-method\"><\/span>5.1 Coloca\u00e7\u00e3o correta do DPS e m\u00e9todo de instala\u00e7\u00e3o<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"218\" data-end=\"487\">Escolha um local SPD que seja facilmente acess\u00edvel e que responda rapidamente a picos de tens\u00e3o. Instale-o no lado da linha do quadro de distribui\u00e7\u00e3o principal ou de deriva\u00e7\u00e3o, de acordo com as normas IEC. Um caso industrial mostrou que esta configura\u00e7\u00e3o reduziu os danos causados por raios de 12 para apenas 2 incidentes por ano.<\/p>\n<p data-start=\"489\" data-end=\"903\">Utilize uma cablagem curta e direta para minimizar a indut\u00e2ncia e a resist\u00eancia. Os condutores de aterramento do SPD devem ficar abaixo de 1 m. Fios de aterramento longos atrasam a resposta - um estudo de caso relacionou esse atraso a danos ao equipamento. Siga sempre o manual do fabricante e verifique novamente o aperto e a integridade da conex\u00e3o. Edison lembra-nos: \"O g\u00e9nio \u00e9 1% de inspira\u00e7\u00e3o e 99% de transpira\u00e7\u00e3o.\" Uma instala\u00e7\u00e3o meticulosa proporciona estabilidade a longo prazo.<\/p>\n<hr data-start=\"905\" data-end=\"908\" \/>\n<h3 data-start=\"910\" data-end=\"954\"><span class=\"ez-toc-section\" id=\"52-importance-of-regular-spd-inspection\"><\/span>5.2 Import\u00e2ncia da inspe\u00e7\u00e3o regular do DUP<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"956\" data-end=\"1342\">Realizar inspec\u00e7\u00f5es anuais, especialmente em \u00e1reas propensas a raios, de acordo com a IEC. Uma pesquisa industrial descobriu que os SPDs sem manuten\u00e7\u00e3o falharam em 20% em um ano, enquanto as unidades mantidas falharam em 2%. Use geradores de corrente de surto e testadores de tens\u00e3o para confirmar que o desempenho atende \u00e0s especifica\u00e7\u00f5es. Como disse Edison, \"Mais vale um grama de preven\u00e7\u00e3o do que um quilo de cura\". As verifica\u00e7\u00f5es regulares evitam falhas dispendiosas.<\/p>\n<hr data-start=\"1344\" data-end=\"1347\" \/>\n<h2 data-start=\"1349\" data-end=\"1385\"><span class=\"ez-toc-section\" id=\"vi-spd-regulations-and-standards\"><\/span>VI. Regulamentos e normas do DUP<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3 data-start=\"1387\" data-end=\"1435\"><span class=\"ez-toc-section\" id=\"61-key-international-and-national-standards\"><\/span>6.1 Principais normas internacionais e nacionais<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"1437\" data-end=\"1785\">Seguir normas como a IEC 61643 e as diretrizes de instala\u00e7\u00e3o do NIST. Na China, consulte GB 50057 e GB 18873. Por exemplo, GB 18873 requer Uc do SPD pelo menos 1.15 \u00d7 tens\u00e3o do sistema para evitar disparos falsos. Estudos de campo mostram que a conformidade reduz muito os danos ao equipamento e o tempo de inatividade. Como Franklin observou, \"Uma on\u00e7a de preven\u00e7\u00e3o vale um quilo de cura\".<\/p>\n<hr data-start=\"1787\" data-end=\"1790\" \/>\n<h3 data-start=\"1792\" data-end=\"1830\"><span class=\"ez-toc-section\" id=\"62-ensuring-spd-safety-compliance\"><\/span>6.2 Garantir a conformidade com a seguran\u00e7a do DUP<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"1832\" data-end=\"2121\">Verifique se existem marcas de certifica\u00e7\u00e3o como CE, UL 1449 e VDE. Obtenha testes de desempenho para Uc, In e Imax dos fabricantes. Estudos confirmam que os SPDs certificados reduzem os incidentes de inc\u00eandio e danos. Como Edison disse: \"Seguran\u00e7a em primeiro lugar, a preven\u00e7\u00e3o \u00e9 melhor do que remediar\". A conformidade protege os utilizadores e os bens.<\/p>\n<hr data-start=\"2123\" data-end=\"2126\" \/>\n<h2 data-start=\"2128\" data-end=\"2153\"><span class=\"ez-toc-section\" id=\"vii-economic-analysis\"><\/span>VII. An\u00e1lise econ\u00f3mica<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3 data-start=\"2155\" data-end=\"2205\"><span class=\"ez-toc-section\" id=\"71-balancing-investment-and-long-term-savings\"><\/span>7.1 Equil\u00edbrio entre investimento e poupan\u00e7a a longo prazo<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"2207\" data-end=\"2472\">Considere os custos do SPD mais as taxas de instala\u00e7\u00e3o. A IEC relata que os locais industriais sem SPDs arriscam centenas de milhares em perdas anualmente. O investimento geralmente \u00e9 recuperado em meses por meio de perdas evitadas. Como Franklin observou, \"Uma on\u00e7a de preven\u00e7\u00e3o vale um quilo de cura\".<\/p>\n<hr data-start=\"2474\" data-end=\"2477\" \/>\n<h3 data-start=\"2479\" data-end=\"2519\"><span class=\"ez-toc-section\" id=\"72-comparing-spd-cost-effectiveness\"><\/span>7.2 Compara\u00e7\u00e3o da rela\u00e7\u00e3o custo-efic\u00e1cia do DOCUP<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"2521\" data-end=\"2791\">Analisar o tempo de vida \u00fatil, n\u00e3o apenas o pre\u00e7o de compra. As marcas de topo custam mais inicialmente, mas duram mais tempo e reduzem o tempo de inatividade. Estudos mostram que os SPDs de baixo custo podem custar mais ao longo do tempo. Buffett diz: \"Pre\u00e7o \u00e9 o que voc\u00ea paga; valor \u00e9 o que voc\u00ea recebe\". Concentre-se no valor total e n\u00e3o apenas no pre\u00e7o.<\/p>\n<hr data-start=\"2793\" data-end=\"2796\" \/>\n<h2 data-start=\"2798\" data-end=\"2819\"><span class=\"ez-toc-section\" id=\"viii-case-studies\"><\/span>VIII. Estudos de caso<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3 data-start=\"2821\" data-end=\"2858\"><span class=\"ez-toc-section\" id=\"81-successful-spd-implementation\"><\/span>8.1 Implementa\u00e7\u00e3o bem sucedida do DUP<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"2860\" data-end=\"3144\">Uma empresa global de eletr\u00f4nicos selecionou SPDs de acordo com a IEC 61643-11 e combinou Uc e In com seus sistemas. Eles instalaram e mantiveram os SPDs adequadamente. Resultado: os danos causados por sobretens\u00f5es diminu\u00edram em 80%, aumentando a produ\u00e7\u00e3o e reduzindo o tempo de inatividade. Isso destaca a import\u00e2ncia da sele\u00e7\u00e3o e do cuidado personalizados.<\/p>\n<h3 data-start=\"3146\" data-end=\"3191\"><span class=\"ez-toc-section\" id=\"82-common-mistakes-and-how-to-avoid-them\"><\/span>8.2 Erros comuns e como evit\u00e1-los<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"3193\" data-end=\"3485\">Muitos ignoram a avalia\u00e7\u00e3o do sistema e usam um SPD de \"tamanho \u00fanico\". Os padr\u00f5es IEEE aconselham a correspond\u00eancia do SPD com a sensibilidade do sistema. Outros erros incluem ignorar a conformidade ou negligenciar a manuten\u00e7\u00e3o - ambos levam a falhas. Estudos de ciclo de vida mostram que a sele\u00e7\u00e3o e os cuidados adequados podem reduzir as taxas de falha em 90%.<\/p>\n<hr data-start=\"3487\" data-end=\"3490\" \/>\n<h2 data-start=\"3492\" data-end=\"3514\"><span class=\"ez-toc-section\" id=\"summary-of-part-two\"><\/span>Resumo da segunda parte<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"3516\" data-end=\"3621\">Esta sec\u00e7\u00e3o abrange a instala\u00e7\u00e3o, manuten\u00e7\u00e3o, normas, economia e estudos de caso do SPD. Principais conclus\u00f5es:<\/p>\n<ul data-start=\"3623\" data-end=\"3954\">\n<li data-start=\"3623\" data-end=\"3693\">\n<p data-start=\"3625\" data-end=\"3693\">Instale sempre os SPDs em locais \u00f3ptimos com m\u00e9todos de cablagem adequados.<\/p>\n<\/li>\n<li data-start=\"3694\" data-end=\"3768\">\n<p data-start=\"3696\" data-end=\"3768\">Realizar inspec\u00e7\u00f5es anuais e utilizar equipamento de ensaio para verificar o desempenho.<\/p>\n<\/li>\n<li data-start=\"3769\" data-end=\"3837\">\n<p data-start=\"3771\" data-end=\"3837\">Escolha dispositivos que cumpram as normas IEC\/UL e as marcas de certifica\u00e7\u00e3o.<\/p>\n<\/li>\n<li data-start=\"3838\" data-end=\"3890\">\n<p data-start=\"3840\" data-end=\"3890\">Analisar as poupan\u00e7as a longo prazo e n\u00e3o apenas os custos iniciais.<\/p>\n<\/li>\n<li data-start=\"3891\" data-end=\"3954\">\n<p data-start=\"3893\" data-end=\"3954\">Aprenda com estudos de casos do mundo real e evite erros comuns.<\/p>\n<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Clique para visualizar o Guia SPD Parte Um V. Instala\u00e7\u00e3o e Manuten\u00e7\u00e3o do SPD 5.1 Coloca\u00e7\u00e3o adequada do SPD e m\u00e9todo de instala\u00e7\u00e3o Escolha um local SPD que seja facilmente acess\u00edvel e responda rapidamente a surtos. Instale-o no lado da linha do quadro de distribui\u00e7\u00e3o principal ou de deriva\u00e7\u00e3o, de acordo com os padr\u00f5es IEC. Um caso industrial mostrou que essa configura\u00e7\u00e3o reduziu os raios ...<\/p>","protected":false},"author":18,"featured_media":26962,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1,488,422],"tags":[],"class_list":["post-26960","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","category-surge-protection","category-industry-news"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Guide to Choosing Surge Protective Devices<\/title>\n<meta name=\"description\" content=\"This blog is about Guide to Choosing Surge Protective Devices . 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