{"id":27592,"date":"2025-07-01T16:02:50","date_gmt":"2025-07-01T08:02:50","guid":{"rendered":"https:\/\/www.cnspd.com\/?p=27592"},"modified":"2025-07-04T09:12:29","modified_gmt":"2025-07-04T01:12:29","slug":"how-does-a-surge-protector-work","status":"publish","type":"post","link":"https:\/\/www.cnspd.com\/pt\/como-funciona-um-protetor-contra-sobretensoes\/","title":{"rendered":"Explica\u00e7\u00e3o da prote\u00e7\u00e3o contra sobretens\u00f5es: Como funciona um protetor contra sobretens\u00f5es?"},"content":{"rendered":"<p data-start=\"352\" data-end=\"1002\">Quando um pico de tens\u00e3o inesperado atinge o seu equipamento, pode danificar instantaneamente os sistemas de controlo, inversores ou comutadores, provocando tempos de inatividade dispendiosos. <strong data-start=\"501\" data-end=\"536\">Como funciona um protetor contra sobretens\u00f5es<\/strong> para evitar tais falhas? A resposta est\u00e1 nos dispositivos de prote\u00e7\u00e3o de resposta r\u00e1pida. <strong data-start=\"616\" data-end=\"626\">LEEYEE<\/strong>A LEEYEE, um fabricante certificado de prote\u00e7\u00e3o contra sobretens\u00f5es, fornece SPDs de alta velocidade para pain\u00e9is de subesta\u00e7\u00f5es, inversores solares e quadros el\u00e9ctricos industriais. Com tempos de resposta inferiores a 25 ns e capacidades de descarga at\u00e9 100 kA, os dispositivos LEEYEE, certificados pela CE\/CB\/ISO9001\/TUV, oferecem um desempenho l\u00edder na ind\u00fastria.<br data-start=\"921\" data-end=\"924\" \/><strong data-start=\"924\" data-end=\"1002\">Continue a ler para descobrir a engenharia detalhada por detr\u00e1s da prote\u00e7\u00e3o contra sobretens\u00f5es.<\/strong><\/p>\n<p data-start=\"1009\" data-end=\"1220\"><strong data-start=\"1009\" data-end=\"1220\">Um protetor contra sobretens\u00f5es funciona detectando eventos de sobretens\u00e3o e desviando instantaneamente o excesso de energia para a terra, fixando a tens\u00e3o a limites seguros e protegendo o equipamento ligado contra correntes transit\u00f3rias explosivas.<\/strong><\/p>\n<p data-start=\"1227\" data-end=\"1353\">Ainda n\u00e3o tem a certeza de como componentes como MOVs, GDTs e SPDs se integram em sistemas reais? Vamos explorar a verdadeira mec\u00e2nica t\u00e9cnica.<\/p>\n<p data-start=\"1227\" data-end=\"1353\"><img fetchpriority=\"high\" decoding=\"async\" class=\"aligncenter size-full wp-image-26994\" src=\"https:\/\/www.cnspd.com\/wp-content\/uploads\/2024\/12\/BookCover-3.jpg\" alt=\"como funciona um protetor contra sobretens\u00f5es\" width=\"600\" height=\"408\" srcset=\"https:\/\/www.cnspd.com\/wp-content\/uploads\/2024\/12\/BookCover-3.jpg 600w, https:\/\/www.cnspd.com\/wp-content\/uploads\/2024\/12\/BookCover-3-150x102.jpg 150w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/p>\n<hr data-start=\"1355\" data-end=\"1358\" \/>\n<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' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/pt\/como-funciona-um-protetor-contra-sobretensoes\/#how-does-a-surge-protector-work-technical-breakdown\" >Como funciona um protetor contra sobretens\u00f5es: An\u00e1lise t\u00e9cnica<\/a><\/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\/como-funciona-um-protetor-contra-sobretensoes\/#leeyee-product-specifications\" >Especifica\u00e7\u00f5es do produto LEEYEE<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/pt\/como-funciona-um-protetor-contra-sobretensoes\/#application-scenarios-and-installation-guidelines\" >Cen\u00e1rios de aplica\u00e7\u00e3o e diretrizes de instala\u00e7\u00e3o<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/pt\/como-funciona-um-protetor-contra-sobretensoes\/#maintenance-performance-testing\" >Manuten\u00e7\u00e3o e testes de desempenho<\/a><\/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\/como-funciona-um-protetor-contra-sobretensoes\/#faqs-%e2%80%93-how-does-a-surge-protector-work\" >Perguntas e Respostas - Como funciona um protetor contra sobretens\u00f5es?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/pt\/como-funciona-um-protetor-contra-sobretensoes\/#%e2%9a%a0%ef%b8%8f-professional-disclaimer\" >\u26a0\ufe0f Declara\u00e7\u00e3o de exonera\u00e7\u00e3o de responsabilidade profissional<\/a><\/li><\/ul><\/nav><\/div>\n<h2 data-start=\"1360\" data-end=\"1416\"><span class=\"ez-toc-section\" id=\"how-does-a-surge-protector-work-technical-breakdown\"><\/span>Como funciona um protetor contra sobretens\u00f5es: An\u00e1lise t\u00e9cnica<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"1418\" data-end=\"1616\">Um protetor contra sobretens\u00f5es, tamb\u00e9m designado por Dispositivo de Prote\u00e7\u00e3o contra Sobretens\u00f5es (DPS), foi concebido para limitar as sobretens\u00f5es transit\u00f3rias, passando de alta imped\u00e2ncia para baixa imped\u00e2ncia quando os limites de tens\u00e3o s\u00e3o ultrapassados.<\/p>\n<p data-start=\"1618\" data-end=\"1633\">Componentes principais:<\/p>\n<ol data-start=\"1635\" data-end=\"2110\">\n<li data-start=\"1635\" data-end=\"1766\">\n<p data-start=\"1638\" data-end=\"1766\"><strong data-start=\"1638\" data-end=\"1668\">Varistor de \u00f3xido met\u00e1lico (MOV)<\/strong>Resist\u00eancia n\u00e3o linear que bloqueia a tens\u00e3o; tens\u00e3o de prote\u00e7\u00e3o t\u00edpica 350-600 V para sistemas de 275 V.<\/p>\n<\/li>\n<li data-start=\"1767\" data-end=\"1858\">\n<p data-start=\"1770\" data-end=\"1858\"><strong data-start=\"1770\" data-end=\"1798\">Tubo de descarga de g\u00e1s (GDT)<\/strong>A fun\u00e7\u00e3o de ativa\u00e7\u00e3o \u00e9 activada com uma tens\u00e3o mais elevada, desviando grandes eventos de energia.<\/p>\n<\/li>\n<li data-start=\"1859\" data-end=\"1947\">\n<p data-start=\"1862\" data-end=\"1947\"><strong data-start=\"1862\" data-end=\"1907\">Diodo de supress\u00e3o de tens\u00e3o transiente (TVS)<\/strong>: resposta de alta velocidade para microcircuitos.<\/p>\n<\/li>\n<li data-start=\"1948\" data-end=\"2038\">\n<p data-start=\"1951\" data-end=\"2038\"><strong data-start=\"1951\" data-end=\"1988\">S\u00e9rie Fus\u00edvel ou Desconex\u00e3o T\u00e9rmica<\/strong>isolam os MOVs avariados para evitar a fuga t\u00e9rmica.<\/p>\n<\/li>\n<li data-start=\"2039\" data-end=\"2110\">\n<p data-start=\"2042\" data-end=\"2110\"><strong data-start=\"2042\" data-end=\"2062\">Indicador de estado<\/strong>: sinaliza\u00e7\u00e3o visual ou contacto remoto para manuten\u00e7\u00e3o.<\/p>\n<\/li>\n<\/ol>\n<p data-start=\"2112\" data-end=\"2134\">A sequ\u00eancia de resposta:<\/p>\n<ul data-start=\"2135\" data-end=\"2310\">\n<li data-start=\"2135\" data-end=\"2206\">\n<p data-start=\"2137\" data-end=\"2206\">A tens\u00e3o sobe \u2192 o MOV entra em condu\u00e7\u00e3o \u2192 a tens\u00e3o \u00e9 fixada perto do seu Vc.<\/p>\n<\/li>\n<li data-start=\"2207\" data-end=\"2270\">\n<p data-start=\"2209\" data-end=\"2270\">No caso de sobretens\u00f5es de alta energia, o GDT dispara \u2192 energia anulada para a terra.<\/p>\n<\/li>\n<li data-start=\"2271\" data-end=\"2310\">\n<p data-start=\"2273\" data-end=\"2310\">O MOV arrefece e regressa \u00e0 alta imped\u00e2ncia.<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"2312\" data-end=\"2432\">De acordo com a IEC 61643-11, os SPDs devem reagir dentro de \u226425 ns e lidar com In (8\/20 \u00b5s) entre 20-40 kA, com pico Imax at\u00e9 100 kA.<\/p>\n<hr data-start=\"2434\" data-end=\"2437\" \/>\n<h2 data-start=\"2439\" data-end=\"2472\"><span class=\"ez-toc-section\" id=\"leeyee-product-specifications\"><\/span>Especifica\u00e7\u00f5es do produto LEEYEE<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<div class=\"_tableContainer_80l1q_1\">\n<div class=\"_tableWrapper_80l1q_14 group flex w-fit flex-col-reverse\" tabindex=\"-1\">\n<table class=\"w-fit min-w-(--thread-content-width)\" data-start=\"2474\" data-end=\"3244\">\n<thead data-start=\"2474\" data-end=\"2551\">\n<tr data-start=\"2474\" data-end=\"2551\">\n<th data-start=\"2474\" data-end=\"2506\" data-col-size=\"sm\">Par\u00e2metro<\/th>\n<th data-start=\"2506\" data-end=\"2551\" data-col-size=\"sm\">Valor<\/th>\n<\/tr>\n<\/thead>\n<tbody data-start=\"2629\" data-end=\"3244\">\n<tr data-start=\"2629\" data-end=\"2705\">\n<td data-start=\"2629\" data-end=\"2660\" data-col-size=\"sm\">Tens\u00e3o nominal (Uc)<\/td>\n<td data-start=\"2660\" data-end=\"2705\" data-col-size=\"sm\">275 V AC, 600-1500 V DC<\/td>\n<\/tr>\n<tr data-start=\"2706\" data-end=\"2784\">\n<td data-start=\"2706\" data-end=\"2739\" data-col-size=\"sm\">Corrente de descarga nominal (In)<\/td>\n<td data-start=\"2739\" data-end=\"2784\" data-col-size=\"sm\">20-40 kA (8\/20 \u03bcs)<\/td>\n<\/tr>\n<tr data-start=\"2785\" data-end=\"2859\">\n<td data-start=\"2785\" data-end=\"2820\" data-col-size=\"sm\">Corrente m\u00e1xima de descarga (Imax)<\/td>\n<td data-col-size=\"sm\" data-start=\"2820\" data-end=\"2859\">100 kA (8\/20 \u03bcs)<\/td>\n<\/tr>\n<tr data-start=\"2860\" data-end=\"2936\">\n<td data-start=\"2860\" data-end=\"2891\" data-col-size=\"sm\">Tempo de resposta<\/td>\n<td data-col-size=\"sm\" data-start=\"2891\" data-end=\"2936\">&lt; 25 ns<\/td>\n<\/tr>\n<tr data-start=\"2937\" data-end=\"3013\">\n<td data-start=\"2937\" data-end=\"2969\" data-col-size=\"sm\">N\u00edvel de prote\u00e7\u00e3o da tens\u00e3o (para cima)<\/td>\n<td data-start=\"2969\" data-end=\"3013\" data-col-size=\"sm\">\u22641,5 kV<\/td>\n<\/tr>\n<tr data-start=\"3014\" data-end=\"3090\">\n<td data-start=\"3014\" data-end=\"3045\" data-col-size=\"sm\">Conformidade com a norma<\/td>\n<td data-start=\"3045\" data-end=\"3090\" data-col-size=\"sm\">IEC 61643-11, EN 50539, GB18802<\/td>\n<\/tr>\n<tr data-start=\"3091\" data-end=\"3167\">\n<td data-start=\"3091\" data-end=\"3122\" data-col-size=\"sm\">Desconex\u00e3o t\u00e9rmica<\/td>\n<td data-col-size=\"sm\" data-start=\"3122\" data-end=\"3167\">Inclu\u00eddo para uma falha segura do MOV<\/td>\n<\/tr>\n<tr data-start=\"3168\" data-end=\"3244\">\n<td data-start=\"3168\" data-end=\"3199\" data-col-size=\"sm\">Indica\u00e7\u00e3o de estado<\/td>\n<td data-start=\"3199\" data-end=\"3244\" data-col-size=\"sm\">LED + contacto seco<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div class=\"sticky end-(--thread-content-margin) h-0 self-end select-none\">\n<div class=\"absolute end-0 flex items-end\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<p data-start=\"3246\" data-end=\"3342\">Estas especifica\u00e7\u00f5es tornam os SPDs LEEYEE ideais para pain\u00e9is solares industriais, centros de dados e pain\u00e9is de controlo de instala\u00e7\u00f5es.<\/p>\n<hr data-start=\"3344\" data-end=\"3347\" \/>\n<h2 data-start=\"3349\" data-end=\"3402\"><span class=\"ez-toc-section\" id=\"application-scenarios-and-installation-guidelines\"><\/span>Cen\u00e1rios de aplica\u00e7\u00e3o e diretrizes de instala\u00e7\u00e3o<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul data-start=\"3404\" data-end=\"3751\">\n<li data-start=\"3404\" data-end=\"3492\">\n<p data-start=\"3406\" data-end=\"3492\"><strong data-start=\"3406\" data-end=\"3435\">Pain\u00e9is de distribui\u00e7\u00e3o de energia<\/strong>: Utilizar DPS de tipo 2 no MCC\/incomer com coordena\u00e7\u00e3o de fus\u00edveis.<\/p>\n<\/li>\n<li data-start=\"3493\" data-end=\"3592\">\n<p data-start=\"3495\" data-end=\"3592\"><strong data-start=\"3495\" data-end=\"3519\">Entrada do inversor solar<\/strong>: Escolha SPD classificado como 1000 VDC com Up \u22641.8 kV, h\u00edbrido GDT + MOV integrado.<\/p>\n<\/li>\n<li data-start=\"3593\" data-end=\"3661\">\n<p data-start=\"3595\" data-end=\"3661\"><strong data-start=\"3595\" data-end=\"3621\">Prote\u00e7\u00e3o da linha de sinal<\/strong>: Utilizar m\u00f3dulos SPD baseados em TVS (\u2264150 V).<\/p>\n<\/li>\n<li data-start=\"3662\" data-end=\"3751\">\n<p data-start=\"3664\" data-end=\"3751\"><strong data-start=\"3664\" data-end=\"3691\">Implanta\u00e7\u00f5es a n\u00edvel de painel<\/strong>: Par SPD com fus\u00edvel de 10 kA, gG para prote\u00e7\u00e3o contra curto-circuitos.<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"3753\" data-end=\"3890\">As zonas de seguran\u00e7a de acordo com a IEC 60664 requerem coordena\u00e7\u00e3o entre as classifica\u00e7\u00f5es de curto-circuito e o Icc do SPD para garantir o funcionamento e a seguran\u00e7a adequados do dispositivo.<\/p>\n<hr data-start=\"3892\" data-end=\"3895\" \/>\n<h2 data-start=\"3897\" data-end=\"3934\"><span class=\"ez-toc-section\" id=\"maintenance-performance-testing\"><\/span>Manuten\u00e7\u00e3o e testes de desempenho<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul data-start=\"3936\" data-end=\"4293\">\n<li data-start=\"3936\" data-end=\"4003\">\n<p data-start=\"3938\" data-end=\"4003\"><strong data-start=\"3938\" data-end=\"3959\">Inspe\u00e7\u00e3o visual<\/strong>: Verificar periodicamente o estado do LED \/ indicador.<\/p>\n<\/li>\n<li data-start=\"4004\" data-end=\"4113\">\n<p data-start=\"4006\" data-end=\"4113\"><strong data-start=\"4006\" data-end=\"4024\">Monitoriza\u00e7\u00e3o MOV<\/strong>: Utilizar c\u00e2maras de infravermelhos ou medidores de resist\u00eancia; substituir se \u0394T &gt; 10 K ou se a resist\u00eancia MOV for elevada.<\/p>\n<\/li>\n<li data-start=\"4114\" data-end=\"4197\">\n<p data-start=\"4116\" data-end=\"4197\"><strong data-start=\"4116\" data-end=\"4138\">Ciclos de fim de vida<\/strong>: Substituir as unidades ap\u00f3s exposi\u00e7\u00e3o cumulativa a picos de tens\u00e3o ou 5 anos.<\/p>\n<\/li>\n<li data-start=\"4198\" data-end=\"4293\">\n<p data-start=\"4200\" data-end=\"4293\"><strong data-start=\"4200\" data-end=\"4220\">Integridade do solo<\/strong>: Assegurar uma resist\u00eancia de liga\u00e7\u00e3o \u00e0 terra &lt; 5 \u03a9 em sistemas de BT e \u22641 \u03a9 em sistemas de MT.<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"4295\" data-end=\"4370\">As taxas de erro t\u00e9cnico baixam para &lt;1% com uma instala\u00e7\u00e3o e manuten\u00e7\u00e3o corretas.<\/p>\n<hr data-start=\"4372\" data-end=\"4375\" \/>\n<h2 data-start=\"4377\" data-end=\"4419\"><span class=\"ez-toc-section\" id=\"faqs-%e2%80%93-how-does-a-surge-protector-work\"><\/span>Perguntas e Respostas - Como funciona um protetor contra sobretens\u00f5es?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"4421\" data-end=\"4601\"><strong data-start=\"4421\" data-end=\"4488\">1. Como \u00e9 que um protetor contra sobretens\u00f5es funciona com picos de alta frequ\u00eancia?<\/strong><br data-start=\"4488\" data-end=\"4491\" \/>Os d\u00edodos TVS fixam picos ao n\u00edvel dos microssegundos; os MOVs tratam de eventos transit\u00f3rios mais amplos, fornecendo prote\u00e7\u00e3o em camadas.<\/p>\n<p data-start=\"4603\" data-end=\"4745\"><strong data-start=\"4603\" data-end=\"4643\">2. Os DPS podem falhar sem indica\u00e7\u00e3o?<\/strong><br data-start=\"4643\" data-end=\"4646\" \/>Sim. Os isoladores t\u00e9rmicos desligam os MOV; os alarmes ou indicadores remotos devem ser monitorizados periodicamente.<\/p>\n<p data-start=\"4747\" data-end=\"4951\"><strong data-start=\"4747\" data-end=\"4804\">3. Como selecciono o tempo de resposta e as especifica\u00e7\u00f5es de descarga?<\/strong><br data-start=\"4804\" data-end=\"4807\" \/>Com base na tens\u00e3o do sistema, no risco de rel\u00e2mpagos (valor Ng) e na sensibilidade do equipamento - siga o artigo 285 da NEC nos EUA e os princ\u00edpios da IEC a n\u00edvel mundial.<\/p>\n<p data-start=\"4953\" data-end=\"5076\"><strong data-start=\"4953\" data-end=\"4985\">4. Porqu\u00ea emparelhar o SPD com um fus\u00edvel?<\/strong><br data-start=\"4985\" data-end=\"4988\" \/>O fus\u00edvel isola o SPD em caso de falha do MOV para evitar falhas secund\u00e1rias e riscos de inc\u00eandio.<\/p>\n<p data-start=\"5078\" data-end=\"5224\"><strong data-start=\"5078\" data-end=\"5112\">5. Onde devo localizar os DUP?<\/strong><br data-start=\"5112\" data-end=\"5115\" \/>No quadro de distribui\u00e7\u00e3o, na entrada do inversor e na alimenta\u00e7\u00e3o do painel - escalonados para proteger o sistema e os dispositivos a jusante.<\/p>\n<p data-start=\"5226\" data-end=\"5371\"><strong data-start=\"5226\" data-end=\"5267\">6. Os DPS LEEYEE s\u00e3o compat\u00edveis com a legisla\u00e7\u00e3o local?<\/strong><br data-start=\"5267\" data-end=\"5270\" \/>Sim. Existem vers\u00f5es IEC para os mercados da UE, UL1449 Tipo 1 e 2 para os EUA e dispositivos com classifica\u00e7\u00e3o GB para a China.<\/p>\n<p data-start=\"5373\" data-end=\"5511\"><strong data-start=\"5373\" data-end=\"5409\">7. Com que frequ\u00eancia devo testar os DPS?<\/strong><br data-start=\"5409\" data-end=\"5412\" \/>Efetuar inspec\u00e7\u00f5es anuais, com imagens t\u00e9rmicas e ensaios de resist\u00eancia em condi\u00e7\u00f5es de carga m\u00e1xima.<\/p>\n<hr data-start=\"5513\" data-end=\"5516\" \/>\n<h2 data-start=\"5518\" data-end=\"5547\"><span class=\"ez-toc-section\" id=\"%e2%9a%a0%ef%b8%8f-professional-disclaimer\"><\/span>\u26a0\ufe0f Declara\u00e7\u00e3o de exonera\u00e7\u00e3o de responsabilidade profissional<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"5549\" data-end=\"5775\">Este artigo destina-se a engenheiros de energia e integradores de sistemas qualificados. A sele\u00e7\u00e3o do SPD, o protocolo de liga\u00e7\u00e3o \u00e0 terra e a coordena\u00e7\u00e3o do risco de sobretens\u00e3o devem estar em conformidade com os regulamentos NEC, IEC ou locais e ser certificados por profissionais el\u00e9ctricos.<\/p>","protected":false},"excerpt":{"rendered":"<p>Quando um pico de tens\u00e3o inesperado atinge o seu equipamento, pode danificar instantaneamente os sistemas de controlo, inversores ou comutadores, provocando tempos de inatividade dispendiosos. Como \u00e9 que um protetor contra picos de tens\u00e3o funciona para evitar tais falhas? A resposta est\u00e1 nos dispositivos de prote\u00e7\u00e3o de resposta r\u00e1pida. A LEEYEE, um fabricante certificado de prote\u00e7\u00e3o contra sobretens\u00f5es, fornece SPDs de alta velocidade para pain\u00e9is de subesta\u00e7\u00f5es, inversores solares e quadros el\u00e9ctricos industriais. Com resposta...<\/p>","protected":false},"author":18,"featured_media":27315,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1,422],"tags":[],"class_list":["post-27592","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","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>How Does a Surge Protector Work?<\/title>\n<meta name=\"description\" content=\"How does a surge protector work? 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