<html><head><title>Newsletter CTEL - Transformadores de isolamento. Somos CTEL, Lda. – há 33 anos ao seu serviço na área da Energia!!</title><meta content="width=device-width, initial-scale=1" name="viewport"><meta name="x-apple-disable-message-reformatting"><meta content="yes" name="apple-mobile-web-app-capable"><meta content="black" name="apple-mobile-web-app-status-bar-style"><meta content="telephone=no" name="format-detection"><style type="text/css"> /* Resets */ .ReadMsgBody { width: 100%; background-color: #ebebeb;} .ExternalClass {width: 100%; background-color: #ebebeb;} .ExternalClass, .ExternalClass p, .ExternalClass span, .ExternalClass font, .ExternalClass td, .ExternalClass div {line-height:100%;} a[x-apple-data-detectors]{ color:inherit !important; text-decoration:none !important; font-size:inherit !important; font-family:inherit !important; font-weight:inherit !important; line-height:inherit !important; } body {-webkit-text-size-adjust:none; -ms-text-size-adjust:none;} body {margin:0; padding:0;} .yshortcuts a {border-bottom: none !important;} .rnb-del-min-width{ min-width: 0 !important; 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color:#3c4858; text-align:left;"> <span style="color:#3c4858;"><span style="color:#0000FF;"><strong><span style="font-size:24px;">Transformadores de Isolamento</span></strong></span></span> </td> </tr> <tr style="border-collapse: collapse;"> <td height="10" style="border-collapse: collapse;border-collapse: collapse;;"><br></td> </tr> </tbody></table> </th></tr> </tbody></table></td> </tr> </tbody></table> </td> </tr> </tbody></table> </div></td> </tr><tr style="border-collapse: collapse;"> <td align="center" style="border-collapse: collapse;border-collapse: collapse;;" valign="top"> <div style="background-color: rgb(255, 255, 255); border-radius: 0px;"> <table border="0" cellpadding="0" cellspacing="0" class="rnb-del-min-width" id="Layout_6" name="Layout_6" style="mso-table-rspace:0pt;font-size:100%;border-collapse: collapse; mso-table-rspace:0pt;border-spacing: 0;mso-table-lspace:0pt;min-width:100%;" width="100%"> <tbody><tr style="border-collapse: collapse;"> <td align="center" class="rnb-del-min-width" style="border-collapse: collapse;border-collapse: collapse;min-width: 0 !important;;" valign="top"> <a name="Layout_6" style="mso-line-height-rule:exactly;"></a> <table bgcolor="#ffffff" border="0" cellpadding="0" cellspacing="0" class="rnb-container" style="mso-table-rspace:0pt;font-size:100%;border-collapse: collapse; mso-table-rspace:0pt;border-spacing: 0;mso-table-lspace:0pt;max-width: 100%; min-width: 100%; table-layout: fixed; background-color: rgb(255, 255, 255); border-radius: 0px; border-collapse: separate; padding: 0px;" width="100%"> <tbody><tr style="border-collapse: collapse;"> <td align="left" class="rnb-container-padding" style="border-collapse: collapse;border-collapse: collapse;;" valign="top"> <table border="0" cellpadding="0" cellspacing="0" class="rnb-columns-container" style="mso-table-rspace:0pt;font-size:100%;mso-table-lspace:0pt; mso-table-rspace:0pt;border-collapse: collapse;border-spacing: 0;" width="100%"> <tbody><tr style="border-collapse: collapse;"> <th class="rnb-force-col" style="text-align: left; font-weight: normal" valign="top"> <table align="left" border="0" cellpadding="0" cellspacing="0" class="rnb-last-col-2" style="mso-table-rspace:0pt;font-size:100%;mso-table-lspace:0pt; mso-table-rspace:0pt;border-collapse: collapse;border-spacing: 0;" valign="top" width="350"> <tbody><tr style="border-collapse: collapse;"> <td class="rnb-mbl-float-none" style=";border-collapse: collapse;border-collapse: collapse;font-size:14px; font-family:'Arial',Helvetica,sans-serif;color:#3c4858;float:left;width:350px;"><div style="line-height: 16px; text-align: justify;"><span style="color:#000000;"><span style="font-size:11px;">Os transformadores da nossa gama têm isolamento reforçado e cumprem com os requisitos das normas EN 61558, IEC 60726, bem como das normas NP 2627 ou CEI 176, consoante as diferentes aplicações.<br> Podem ser monofásicos ou trifásicos.<br> O principal campo de aplicação é o de criar redes isoladas (regime de neutro IT), em locais onde tal é exigido pelos regulamentos.<br> O isolamento galvânico criado entre os lados primário e secundário, garante uma total separação, entre redes com níveis superiores a centenas de MΩ.<br> Os cálculos prévios para efeitos de dimensionamento e de fabrico dos nossos transformadores, tem sempre em conta todos os parâmetros, nomeadamente, correntes em vazio, perdas no ferro e no cobre, aumentos de temperatura, tensões de saída para diversas cargas indutivas ou capacitivas, fatores de potência respetivos, desfasagens associadas, etc.<br> Os núcleos dos transformadores são construídos com chapa magnética de ferro silicioso de elevada qualidade, laminada a frio e isolada em ambas as faces, fabricada nas diferentes configurações EI - UI - 3UI. Os enrolamentos são executados com fio ou barra de cobre esmaltada, com classe de temperatura F (155ºC) ou H (185ºC). Os transformadores de fabrico normal têm arrefecimento por circulação natural de ar (convecção) e na ausência de especificações ou projeto especial, são fabricados com isolamento para a classe de temperatura T40/E, que corresponde à temperatura máxima absoluta de 120ºC sob a temperatura ambiente de 40ºC.</span></span></div> </td> </tr> </tbody></table> </th> <th class="msib-right-img rnb-force-col img-block-center" style="mso-padding-alt: 0 !important;text-align: left; font-weight: normal; padding-left: 15px;" valign="top" width="225"> <table align="left" border="0" cellpadding="0" cellspacing="0" class="rnb-col-2-noborder-onleft" style="mso-table-rspace:0pt;font-size:100%;mso-table-lspace:0pt; mso-table-rspace:0pt;border-collapse: collapse;border-spacing: 0;" valign="top" width="100%"> <tbody><tr style="border-collapse: collapse;"> <td align="right" class="img-block-center" style=";border-collapse: collapse;border-collapse: collapse;line-height: auto;" valign="top" width="100%"> <div style="border-top:0px None #9c9c9c;border-right:0px None #9c9c9c;border-bottom:0px None #9c9c9c;border-left:0px None #9c9c9c;display:inline-block;"><div> <img alt="https://stratus.campaign-image.eu/images/17184417488923_5f4d2fc367e8642b8848f049_zc_v2_3_190601000016748136.jpeg" border="0" class="rnb-col-2-img-side-xs" src="https://stratus.campaign-image.eu/images/17184417488923_5f4d2fc367e8642b8848f049_zc_v2_3_190601000016748136.jpeg" style="max-width:180px;vertical-align:top; float: left; max-width:500px !important;" width="225"></div><div style="clear:both;"></div> </div></td> </tr> </tbody></table> </th></tr></tbody></table></td> </tr> </tbody></table> </td> </tr> </tbody></table> </div></td> </tr><tr style="border-collapse: collapse;"> <td align="center" style="border-collapse: collapse;border-collapse: collapse;;" valign="top"> <div style="background-color: rgb(255, 255, 255); border-radius: 0px;"> <table border="0" cellpadding="0" cellspacing="0" class="rnb-del-min-width" id="Layout_10" name="Layout_10" style="mso-table-rspace:0pt;font-size:100%;border-collapse: collapse; mso-table-rspace:0pt;border-spacing: 0;mso-table-lspace:0pt;min-width:100%;" width="100%"> <tbody><tr style="border-collapse: collapse;"> <td align="center" class="rnb-del-min-width" style="border-collapse: collapse;border-collapse: collapse;min-width: 0 !important;;" valign="top"> <a name="Layout_10" style="mso-line-height-rule:exactly;"></a> <table bgcolor="#ffffff" border="0" cellpadding="0" cellspacing="0" class="rnb-container" style="mso-table-rspace:0pt;font-size:100%;border-collapse: collapse; mso-table-rspace:0pt;border-spacing: 0;mso-table-lspace:0pt;max-width: 100%; min-width: 100%; table-layout: fixed; background-color: rgb(255, 255, 255); border-radius: 0px; border-collapse: separate; padding: 0px 0px 5px;" width="100%"> <tbody><tr style="border-collapse: collapse;"> <td align="left" class="rnb-container-padding" style="border-collapse: collapse;border-collapse: collapse;;" valign="top"> <table border="0" cellpadding="0" cellspacing="0" class="rnb-columns-container" style="mso-table-rspace:0pt;font-size:100%;mso-table-lspace:0pt; mso-table-rspace:0pt;border-collapse: collapse;border-spacing: 0;" width="100%"> <tbody><tr style="border-collapse: collapse;"> <th class="rnb-force-col" style="text-align: left; font-weight: normal" valign="top"> <table align="left" border="0" cellpadding="0" cellspacing="0" class="rnb-last-col-2" style="mso-table-rspace:0pt;font-size:100%;mso-table-lspace:0pt; mso-table-rspace:0pt;border-collapse: collapse;border-spacing: 0;" valign="top" width="350"> <tbody><tr style="border-collapse: collapse;"> <td class="rnb-mbl-float-none" style=";border-collapse: collapse;border-collapse: collapse;font-size:14px; font-family:'Arial',Helvetica,sans-serif;color:#3c4858;float:left;width:350px;"><div> <div style="line-height: 16px; text-align: justify;"><span style="font-size:11px;"><span style="color:#000000;">A indicação da potência nominal, refere-se à potência que é debitada pelo secundário do transformador, considerando a temperatura ambiente até 40ºC.<br> A estrutura de suporte é isolada do núcleo do transformador, de forma a garantir o isolamento classe II, no caso dos transformadores canopiados IP-23 ou IP-65.<br> No que se refere a índices de proteção, são aplicadas as diretivas das normas CEI-529-NP 999.<br> A maior parte dos transformadores são executados com índice de proteção IP00, sendo os mais adequados para a aplicação em quadros elétricos ou outros locais protegidos.<br> Quando os transformadores são colocados em caixas com a adequada dissipação, este índice poderá converter-se em IP213 ou em qualquer outro, conforme definido nas normas portuguesas NP-999.<br> O transformador deve ser instalado na horizontal, suportado pelos perfis do chassis.</span></span></div> <div style="line-height: 16px; text-align: justify;"><span style="font-size:11px;"><span style="color:#000000;">A proteção anti corrosão é garantida, através de um acabamento à base de verniz ou resina.<br> Os transformadores são projetados para utilização em locais secos.<br> Os transformadores que são completamente encapsulados em resina, cumprem os requisitos de proteção classe II.<br> A potência nominal disponível nesta gama de produtos, varia entre os 1.000 VA e os 1.000 kVA.</span></span></div> <div style="line-height:16px;"> </div> <div style="line-height:16px;"><span style="font-size:11px;"><strong><span style="color:#000000;">Características principais </span></strong></span></div> <ul style="margin:0px!important;margin:0px!important;"> <li style="mso-margin-bottom-alt: 0;mso-margin-top-alt: 0; mso-margin-bottom-alt: 0;mso-line-height-rule:exactly;"> <div style="line-height:16px;"><span style="font-size:11px;"><span style="color:#000000;">Transformadores secos.</span></span></div> <li style="mso-margin-bottom-alt: 0;mso-margin-top-alt: 0; mso-margin-bottom-alt: 0;mso-line-height-rule:exactly;"> <div style="line-height:16px;"><span style="font-size:11px;"><span style="color:#000000;">Monofásicos ou Trifásicos.</span></span></div> <li style="mso-margin-bottom-alt: 0;mso-margin-top-alt: 0; mso-margin-bottom-alt: 0;mso-line-height-rule:exactly;"> <div style="line-height:16px;"><span style="font-size:11px;"><span style="color:#000000;">Classes I e II.</span></span></div> <li style="mso-margin-bottom-alt: 0;mso-margin-top-alt: 0; mso-margin-bottom-alt: 0;mso-line-height-rule:exactly;"> <div style="line-height:16px;"><span style="font-size:11px;"><span style="color:#000000;">CPI's de elevada qualidade para medição e controlo do nível de isolamento obtido</span></span></div> </ul> <div style="line-height:16px;"> </div> <div style="line-height: 16px; text-align: justify;"><span style="font-size:11px;"><span style="color:#000000;">Para sua melhor orientação e de acordo com o seu projecto, consulte-nos e apresentaremos a nossa solução mais optimizada e mais adequada à sua necessidade real e específica.<br> Transformadores de Isolamento à sua medida!</span></span></div> </div> </td> </tr> </tbody></table> </th> <th class="msib-right-img rnb-force-col img-block-center" style="mso-padding-alt: 0 !important;text-align: left; 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