{"id":27892,"date":"2025-08-12T13:24:14","date_gmt":"2025-08-12T05:24:14","guid":{"rendered":"https:\/\/cnspd.com\/?p=27892"},"modified":"2026-04-10T13:32:16","modified_gmt":"2026-04-10T05:32:16","slug":"protecting-rs232-ports-from-surge-electric-damage-in-us-industrial-networks","status":"publish","type":"post","link":"https:\/\/www.cnspd.com\/it\/protezione-delle-porte-rs232-dai-danni-da-sovratensione-elettrica-nelle-reti-industriali-statunitensi\/","title":{"rendered":"Protezione delle porte RS232 dalle sovratensioni elettriche nelle reti industriali statunitensi"},"content":{"rendered":"<p>In tutti gli Stati Uniti, le sovratensioni elettriche rimangono una delle principali cause di guasto delle apparecchiature industriali. Dai parchi eolici del Texas ai sistemi di segnalazione della metropolitana di New York, le linee di comunicazione RS232 sono spesso i punti deboli nascosti delle reti di automazione. Il NOAA riferisce che in stati come la Florida, la Louisiana e il Mississippi si registrano alcune delle frequenze di fulminazione pi\u00f9 alte al mondo, rendendo le misure di protezione non negoziabili.<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_83 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\">Indice dei contenuti<\/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=\"Allinea la tabella dei contenuti\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/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\/it\/protezione-delle-porte-rs232-dai-danni-da-sovratensione-elettrica-nelle-reti-industriali-statunitensi\/#why-rs232-interfaces-fail-without-protection\" >Perch\u00e9 le interfacce RS232 si guastano senza protezione<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/it\/protezione-delle-porte-rs232-dai-danni-da-sovratensione-elettrica-nelle-reti-industriali-statunitensi\/#leeyee-rs232-surge-protector-for-us-applications\" >LEEYEE Protettore di sovratensione RS232 per applicazioni statunitensi<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/it\/protezione-delle-porte-rs232-dai-danni-da-sovratensione-elettrica-nelle-reti-industriali-statunitensi\/#industry-applications-in-the-us\" >Applicazioni industriali negli Stati Uniti<\/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\/it\/protezione-delle-porte-rs232-dai-danni-da-sovratensione-elettrica-nelle-reti-industriali-statunitensi\/#us-installation-guidelines\" >Linee guida per l'installazione negli Stati Uniti<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/it\/protezione-delle-porte-rs232-dai-danni-da-sovratensione-elettrica-nelle-reti-industriali-statunitensi\/#conclusion\" >Conclusione<\/a><\/li><\/ul><\/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\/it\/protezione-delle-porte-rs232-dai-danni-da-sovratensione-elettrica-nelle-reti-industriali-statunitensi\/#faqs-rs232-surge-protector-in-the-us\" >Domande frequenti: Protettore di sovratensione RS232 negli Stati Uniti<\/a><\/li><\/ul><\/nav><\/div>\n<h3 data-start=\"789\" data-end=\"843\"><span class=\"ez-toc-section\" id=\"why-rs232-interfaces-fail-without-protection\"><\/span><strong data-start=\"793\" data-end=\"841\">Perch\u00e9 le interfacce RS232 si guastano senza protezione<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"844\" data-end=\"999\">Le porte seriali RS232 funzionano a basse tensioni (tipicamente \u00b112V), il che le rende molto sensibili alle sovratensioni transitorie. Negli Stati Uniti, le sovratensioni possono provenire da:<\/p>\n<ul data-start=\"1000\" data-end=\"1173\">\n<li data-start=\"1000\" data-end=\"1044\">\n<p data-start=\"1002\" data-end=\"1044\">Impulsi elettromagnetici indotti da fulmini<\/p>\n<\/li>\n<li data-start=\"1045\" data-end=\"1082\">\n<p data-start=\"1047\" data-end=\"1082\">Operazioni di commutazione della rete elettrica<\/p>\n<\/li>\n<li data-start=\"1083\" data-end=\"1132\">\n<p data-start=\"1085\" data-end=\"1132\">Messa a terra difettosa in strutture multiedificio<\/p>\n<\/li>\n<li data-start=\"1133\" data-end=\"1173\">\n<p data-start=\"1135\" data-end=\"1173\">Retroalimentazione del generatore dopo le interruzioni<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"1175\" data-end=\"1335\">Secondo lo standard IEEE C62.41, le sovratensioni transitorie fino a 500 V possono distruggere i ricetrasmettitori RS232, una tensione molto inferiore a quella prodotta da un fulmine anche lontano.<\/p>\n<p data-start=\"1175\" data-end=\"1335\"><img fetchpriority=\"high\" decoding=\"async\" class=\"aligncenter size-full wp-image-26994\" src=\"https:\/\/cnspd.com\/wp-content\/uploads\/2024\/12\/BookCover-3.jpg\" alt=\"Protettore di sovratensione RS232\" 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=\"1337\" data-end=\"1340\" \/>\n<h3 data-start=\"1342\" data-end=\"1400\"><span class=\"ez-toc-section\" id=\"leeyee-rs232-surge-protector-for-us-applications\"><\/span><strong data-start=\"1346\" data-end=\"1398\">LEEYEE Protettore di sovratensione RS232 per applicazioni statunitensi<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"1401\" data-end=\"1471\">Per i sistemi basati negli Stati Uniti, il <strong data-start=\"1427\" data-end=\"1459\">Protezione da sovratensione LEEYEE RS232<\/strong> fornisce:<\/p>\n<ul data-start=\"1472\" data-end=\"1719\">\n<li data-start=\"1472\" data-end=\"1525\">\n<p data-start=\"1474\" data-end=\"1525\"><strong data-start=\"1474\" data-end=\"1487\">Imax 20kA<\/strong> capacit\u00e0 di far fronte a tempeste estreme nel Midwest<\/p>\n<\/li>\n<li data-start=\"1526\" data-end=\"1584\">\n<p data-start=\"1528\" data-end=\"1584\"><strong data-start=\"1528\" data-end=\"1550\">Tempo di risposta &lt;1ns<\/strong> per la soppressione rapida dei transitori<\/p>\n<\/li>\n<li data-start=\"1585\" data-end=\"1638\">\n<p data-start=\"1587\" data-end=\"1638\"><strong data-start=\"1587\" data-end=\"1612\">Tensione di serraggio &lt;15V<\/strong> per proteggere i segnali a \u00b112V<\/p>\n<\/li>\n<li data-start=\"1639\" data-end=\"1719\">\n<p data-start=\"1641\" data-end=\"1719\"><strong data-start=\"1641\" data-end=\"1680\">UL 497A, IEC 61643, ITU-T K.20\/K.21<\/strong> conformit\u00e0 per l'accettazione industriale<\/p>\n<\/li>\n<\/ul>\n<hr data-start=\"1721\" data-end=\"1724\" \/>\n<h3 data-start=\"1726\" data-end=\"1767\"><span class=\"ez-toc-section\" id=\"industry-applications-in-the-us\"><\/span><strong data-start=\"1730\" data-end=\"1765\">Applicazioni industriali negli Stati Uniti<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ol data-start=\"1768\" data-end=\"2062\">\n<li data-start=\"1768\" data-end=\"1827\">\n<p data-start=\"1771\" data-end=\"1827\"><strong data-start=\"1771\" data-end=\"1781\">Energia<\/strong> - Protezione dei collegamenti SCADA nei parchi eolici del Texas<\/p>\n<\/li>\n<li data-start=\"1828\" data-end=\"1906\">\n<p data-start=\"1831\" data-end=\"1906\"><strong data-start=\"1831\" data-end=\"1848\">Produzione<\/strong> - Sicurezza della comunicazione PLC negli stabilimenti automobilistici del Midwest<\/p>\n<\/li>\n<li data-start=\"1907\" data-end=\"1987\">\n<p data-start=\"1910\" data-end=\"1987\"><strong data-start=\"1910\" data-end=\"1928\">Trasporto pubblico<\/strong> - Sistemi di controllo delle metropolitane nelle grandi aree metropolitane<\/p>\n<\/li>\n<li data-start=\"1988\" data-end=\"2062\">\n<p data-start=\"1991\" data-end=\"2062\"><strong data-start=\"1991\" data-end=\"2004\">Petrolio e gas<\/strong> - Collegamenti di controllo delle piattaforme offshore nel Golfo del Messico<\/p>\n<\/li>\n<\/ol>\n<hr data-start=\"2064\" data-end=\"2067\" \/>\n<h3 data-start=\"2069\" data-end=\"2105\"><span class=\"ez-toc-section\" id=\"us-installation-guidelines\"><\/span><strong data-start=\"2073\" data-end=\"2103\">Linee guida per l'installazione negli Stati Uniti<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul data-start=\"2106\" data-end=\"2312\">\n<li data-start=\"2106\" data-end=\"2175\">\n<p data-start=\"2108\" data-end=\"2175\">Installare le protezioni a <strong data-start=\"2130\" data-end=\"2143\">entrambe le estremit\u00e0<\/strong> di collegamenti RS232 tra edifici<\/p>\n<\/li>\n<li data-start=\"2176\" data-end=\"2242\">\n<p data-start=\"2178\" data-end=\"2242\">Mantenere la resistenza di terra <strong data-start=\"2205\" data-end=\"2216\">&lt;5 ohm<\/strong> secondo le raccomandazioni NEC<\/p>\n<\/li>\n<li data-start=\"2243\" data-end=\"2312\">\n<p data-start=\"2245\" data-end=\"2312\">Utilizzare cavi schermati a doppino per una maggiore soppressione delle sovratensioni.<\/p>\n<\/li>\n<\/ul>\n<hr data-start=\"2314\" data-end=\"2317\" \/>\n<h3 data-start=\"2319\" data-end=\"2339\"><span class=\"ez-toc-section\" id=\"conclusion\"><\/span><strong data-start=\"2323\" data-end=\"2337\">Conclusione<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"2340\" data-end=\"2488\">Per le strutture statunitensi, l'integrazione di un limitatore di sovratensione RS232 \u00e8 un modo economicamente vantaggioso per eliminare i rischi di sovratensione elettrica e mantenere il tempo di attivit\u00e0 operativa.<\/p>\n<hr data-start=\"2490\" data-end=\"2493\" \/>\n<h2 data-start=\"2495\" data-end=\"2541\"><span class=\"ez-toc-section\" id=\"faqs-rs232-surge-protector-in-the-us\"><\/span><strong data-start=\"2498\" data-end=\"2539\">Domande frequenti: Protettore di sovratensione RS232 negli Stati Uniti<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"2542\" data-end=\"2691\"><strong data-start=\"2542\" data-end=\"2549\">Q1:<\/strong> La normativa statunitense richiede una protezione contro le sovratensioni per le linee RS232?<br data-start=\"2604\" data-end=\"2607\" \/>Sebbene la NEC si concentri sulle linee elettriche, le migliori pratiche industriali la raccomandano fortemente.<\/p>\n<p data-start=\"2693\" data-end=\"2839\"><strong data-start=\"2693\" data-end=\"2700\">Q2:<\/strong> Questo dispositivo \u00e8 in grado di proteggere dall'EMP causato da un fulmine nelle vicinanze?<br data-start=\"2759\" data-end=\"2762\" \/>S\u00ec, se correttamente collegato a terra, pu\u00f2 sopprimere efficacemente i transitori indotti.<\/p>","protected":false},"excerpt":{"rendered":"<p>In tutti gli Stati Uniti, le sovratensioni elettriche rimangono una delle principali cause di guasto delle apparecchiature industriali. Dai parchi eolici del Texas ai sistemi di segnalazione della metropolitana di New York, le linee di comunicazione RS232 sono spesso i punti deboli nascosti delle reti di automazione. Il NOAA riferisce che Stati come la Florida, la Louisiana e il Mississippi registrano alcune delle pi\u00f9 alte...<\/p>","protected":false},"author":18,"featured_media":23487,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1,488,422],"tags":[],"class_list":["post-27892","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 v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>RS232 surge protector | LEEYEE Electrics<\/title>\n<meta name=\"description\" content=\"Discover RS232 surge protector and further information about electrical protection. 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