{"id":2171,"date":"2025-08-25T15:21:36","date_gmt":"2025-08-25T07:21:36","guid":{"rendered":"https:\/\/www.britecelectric.com\/?post_type=blog&#038;p=2171"},"modified":"2025-11-03T17:29:13","modified_gmt":"2025-11-03T09:29:13","slug":"how-to-install-type-2-surge-protector","status":"publish","type":"blog","link":"https:\/\/www.britecelectric.com\/it\/blog\/how-to-install-type-2-surge-protector\/","title":{"rendered":"Come installare il dispositivo di protezione da sovratensione di tipo 2 (guida passo passo con diagrammi)"},"content":{"rendered":"<h2 data-start=\"333\" data-end=\"350\">Introduzione<\/h2>\r\n<p data-start=\"351\" data-end=\"630\">Gli sbalzi di tensione sono una delle cause pi\u00f9 comuni di guasto delle apparecchiature elettriche. Sebbene alcuni fulmini siano responsabili di alcune sovratensioni, la maggior parte \u00e8 causata da operazioni di commutazione, motori o disturbi all'interno della rete stessa. \u00c8 qui che entra in gioco un dispositivo di protezione da sovratensione di tipo 2.<\/p>\r\n<p data-start=\"632\" data-end=\"883\">Gli SPD (Surge Protective Devices) di Tipo 2 sono installati nel quadro di distribuzione principale o a monte dei sistemi UPS. Il loro compito \u00e8 quello di limitare le sovratensioni transitorie e deviare in modo sicuro le sovracorrenti verso terra, mantenendo i dispositivi sensibili al sicuro.<\/p>\r\n<p data-start=\"885\" data-end=\"1235\">In questa guida, analizzeremo passo dopo passo come installare un dispositivo di protezione da sovratensione di tipo 2. Imparerai gli strumenti di cui hai bisogno, i controlli di sicurezza, gli schemi elettrici e i metodi di test. Andremo pi\u00f9 in profondit\u00e0 rispetto alla maggior parte dei blog per principianti, facendo riferimento agli standard IEC 61643, alle migliori pratiche di cablaggio e a suggerimenti pratici di progettazione che ti eviteranno costosi errori.<\/p>\r\n\r\n<h2 data-start=\"1242\" data-end=\"1280\">Cos'\u00e8 un limitatore di sovratensione di tipo 2?<\/h2>\r\n<p data-start=\"1281\" data-end=\"1394\">A <a href=\"https:\/\/www.britecelectric.com\/it\/product-category\/ac-power-surge-protection\/type-2-surge-protective-device\/\" target=\"_blank\" rel=\"noopener\"><strong data-start=\"1283\" data-end=\"1297\">SPD di tipo 2<\/strong> <\/a>\u00e8 progettato per gestire le correnti di picco derivanti da fulmini indiretti e operazioni di commutazione.<\/p>\r\n\r\n<ul data-start=\"1396\" data-end=\"1718\">\r\n \t<li data-start=\"1396\" data-end=\"1520\">\r\n<p data-start=\"1398\" data-end=\"1520\">Dove va: installato nel quadro di distribuzione principale (unit\u00e0 consumatore) o sul lato ingresso dei sistemi UPS.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1521\" data-end=\"1621\">\r\n<p data-start=\"1523\" data-end=\"1621\">Da cosa protegge: sovratensioni indotte da fulmini, transitori di commutazione, disturbi della rete.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1622\" data-end=\"1718\">\r\n<p data-start=\"1624\" data-end=\"1718\">Come funziona: bloccando la sovratensione (Up) e deviando l'energia verso terra (PE).<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"1720\" data-end=\"1762\"><strong data-start=\"1720\" data-end=\"1760\">Parametri chiave definiti dalla norma IEC 61643:<\/strong><\/p>\r\n\r\n<ul data-start=\"1763\" data-end=\"2155\">\r\n \t<li data-start=\"1763\" data-end=\"1866\">\r\n<p data-start=\"1765\" data-end=\"1866\">Uc (tensione operativa continua massima): la tensione RMS massima che l'SPD pu\u00f2 gestire in modo continuo.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1867\" data-end=\"1960\">\r\n<p data-start=\"1869\" data-end=\"1960\">Su (Livello di protezione tensione): il livello di bloccaggio che rimane sul lato protetto.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1961\" data-end=\"2067\">\r\n<p data-start=\"1963\" data-end=\"2067\">In (corrente di scarica nominale): corrente di picco che l'SPD pu\u00f2 sopportare ripetutamente (forma d'onda 8\/20 \u03bcs).<\/p>\r\n<\/li>\r\n \t<li data-start=\"2068\" data-end=\"2155\">\r\n<p data-start=\"2070\" data-end=\"2155\">Imax (corrente di scarica massima): la massima sovratensione a cui l'SPD pu\u00f2 sopravvivere.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"2157\" data-end=\"2228\">Ad esempio, quello della nostra azienda <a href=\"https:\/\/www.britecelectric.com\/it\/product-category\/ac-power-surge-protection\/type-2-surge-protective-device\/\" target=\"_blank\" rel=\"noopener\"><strong data-start=\"2184\" data-end=\"2213\">SLP40-275\/3S+1 SPD di tipo 2<\/strong><\/a> \u00e8 valutato a:<\/p>\r\n\r\n<ul data-start=\"2229\" data-end=\"2294\">\r\n \t<li data-start=\"2229\" data-end=\"2246\">\r\n<p data-start=\"2231\" data-end=\"2246\">Uc = 275 V CA<\/p>\r\n<\/li>\r\n \t<li data-start=\"2247\" data-end=\"2261\">\r\n<p data-start=\"2249\" data-end=\"2261\">In = 20 kA<\/p>\r\n<\/li>\r\n \t<li data-start=\"2262\" data-end=\"2278\">\r\n<p data-start=\"2264\" data-end=\"2278\">Imax = 40 kA<\/p>\r\n<\/li>\r\n \t<li data-start=\"2279\" data-end=\"2294\">\r\n<p data-start=\"2281\" data-end=\"2294\">Fino \u2264 1,5 kV<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"2296\" data-end=\"2409\">Ci\u00f2 lo rende ideale per quadri di distribuzione residenziali, commerciali e industriali, nonch\u00e9 per la protezione degli UPS.<\/p>\r\n\r\n<h2 data-start=\"2416\" data-end=\"2459\">Precauzioni di sicurezza prima dell'installazione<\/h2>\r\n<p data-start=\"2460\" data-end=\"2553\">Installare un SPD significa lavorare all'interno di un quadro di distribuzione attivo. La sicurezza non \u00e8 negoziabile.<\/p>\r\n\r\n<ol data-start=\"2555\" data-end=\"2997\">\r\n \t<li data-start=\"2555\" data-end=\"2616\">\r\n<p data-start=\"2558\" data-end=\"2616\">Scollegare completamente l'alimentazione dall'interruttore principale.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2617\" data-end=\"2684\">\r\n<p data-start=\"2620\" data-end=\"2684\">Verificare con un tester che tutti i conduttori siano diseccitati.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2685\" data-end=\"2790\">\r\n<p data-start=\"2688\" data-end=\"2790\">Applicare lockout\/tagout (LOTO): utilizzare dispositivi e tag di lockout per impedire la rialimentazione accidentale.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2791\" data-end=\"2861\">\r\n<p data-start=\"2794\" data-end=\"2861\">Indossare DPI: guanti isolanti, occhiali protettivi, scarpe antinfortunistiche.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2862\" data-end=\"2997\">\r\n<p data-start=\"2865\" data-end=\"2997\">Controllare il sistema di messa a terra: assicurarsi che la barra PE sia collegata correttamente e che la resistenza soddisfi gli standard (\u226410 \u03a9 nella maggior parte delle giurisdizioni).<\/p>\r\n<\/li>\r\n<\/ol>\r\n<p data-start=\"2999\" data-end=\"3173\"><strong data-start=\"3002\" data-end=\"3016\">Importante:<\/strong> Le normative locali (IEC 60364, BS 7671, NEC o il codice nazionale) potrebbero richiedere l'installazione da parte di un elettricista autorizzato. Rispettare sempre gli standard locali.<\/p>\r\n<p data-start=\"2999\" data-end=\"3173\"><a href=\"https:\/\/www.britecelectric.com\/it\/attachment\/br-20-4p-1type-2-surge-protection-device-jpg\/\" rel=\"attachment wp-att-2160\"><img class=\"alignnone wp-image-2160\" src=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2025\/08\/BR-20-4P-1Type-2-Surge-Protection-Device.jpg.webp\" alt=\"\" width=\"872\" \/><\/a><\/p>\r\n\r\n<h2 data-start=\"3180\" data-end=\"3218\">Strumenti e materiali di cui avrai bisogno<\/h2>\r\n<ul data-start=\"3219\" data-end=\"3600\">\r\n \t<li data-start=\"3219\" data-end=\"3266\">\r\n<p data-start=\"3221\" data-end=\"3266\">Modulo SPD tipo 2 (ad es. SLP40-275\/3S+1)<\/p>\r\n<\/li>\r\n \t<li data-start=\"3267\" data-end=\"3311\">\r\n<p data-start=\"3269\" data-end=\"3311\">Spazio per il montaggio su guida DIN all'interno del pannello<\/p>\r\n<\/li>\r\n \t<li data-start=\"3312\" data-end=\"3381\">\r\n<p data-start=\"3314\" data-end=\"3381\">Conduttore in rame: \u22656 mm\u00b2 per SPD di Tipo 2 (raccomandazione IEC)<\/p>\r\n<\/li>\r\n \t<li data-start=\"3382\" data-end=\"3431\">\r\n<p data-start=\"3384\" data-end=\"3431\">Cacciavite dinamometrico adeguato o chiave isolata<\/p>\r\n<\/li>\r\n \t<li data-start=\"3432\" data-end=\"3541\">\r\n<p data-start=\"3434\" data-end=\"3541\">Dispositivo di protezione di riserva: MCB\/fusibile, oppure scegli SPD con fusibile di riserva integrato (ad esempio serie BR-30FU)<\/p>\r\n<\/li>\r\n \t<li data-start=\"3542\" data-end=\"3576\">\r\n<p data-start=\"3544\" data-end=\"3576\">Tester di isolamento e multimetro<\/p>\r\n<\/li>\r\n \t<li data-start=\"3577\" data-end=\"3600\">\r\n<p data-start=\"3579\" data-end=\"3600\">Cinghia di collegamento a terra<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h2>Guida all'installazione passo passo per <a href=\"https:\/\/www.britecelectric.com\/it\/product-category\/ac-power-surge-protection\/type-2-surge-protective-device\/\" target=\"_blank\" rel=\"noopener\">SPD di tipo 2<\/a><\/h2>\r\n&nbsp;\r\n\r\n<a href=\"https:\/\/www.britecelectric.com\/it\/attachment\/type-2-spd-install\/\" rel=\"attachment wp-att-2158\"><img class=\"alignnone size-full wp-image-2158\" src=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2025\/08\/Type-2-SPD-install.jpg\" alt=\"\" width=\"732\" \/><\/a>\r\n<h3 data-start=\"477\" data-end=\"537\"><strong data-start=\"481\" data-end=\"535\">Passaggio 1: pianificare e selezionare la posizione di installazione<\/strong><\/h3>\r\n<ul data-start=\"538\" data-end=\"1226\">\r\n \t<li data-start=\"538\" data-end=\"782\">\r\n<p data-start=\"540\" data-end=\"782\"><strong data-start=\"540\" data-end=\"550\">Dove:<\/strong> L'SPD di tipo 2 deve essere installato nel quadro di distribuzione principale o sul lato di ingresso del sistema UPS. Questa posizione consente di intercettare le sovratensioni di commutazione e i transitori di fulmini indotti prima che raggiungano i carichi sensibili.<\/p>\r\n<\/li>\r\n \t<li data-start=\"783\" data-end=\"894\">\r\n<p data-start=\"785\" data-end=\"894\"><strong data-start=\"785\" data-end=\"793\">Perch\u00e9:<\/strong> L'installazione dell'SPD troppo a valle aumenta la sovratensione residua (Up) vista dall'apparecchiatura.<\/p>\r\n<\/li>\r\n \t<li data-start=\"895\" data-end=\"1226\">\r\n<p data-start=\"897\" data-end=\"917\"><strong data-start=\"897\" data-end=\"915\">Migliore pratica:<\/strong><\/p>\r\n\r\n<ul data-start=\"920\" data-end=\"1226\">\r\n \t<li data-start=\"920\" data-end=\"994\">\r\n<p data-start=\"922\" data-end=\"994\">Mantenere la lunghezza totale del conduttore (fase \u2192 SPD \u2192 terra) \u2264 0,5 m.<\/p>\r\n<\/li>\r\n \t<li data-start=\"997\" data-end=\"1066\">\r\n<p data-start=\"999\" data-end=\"1066\">Posizionare i moduli SPD il pi\u00f9 vicino possibile alle sbarre (L, N, PE).<\/p>\r\n<\/li>\r\n \t<li data-start=\"1069\" data-end=\"1226\">\r\n<p data-start=\"1071\" data-end=\"1226\">Se la distanza tra il Tipo 1 a monte e questo SPD di Tipo 2 \u00e8 &lt;10 m, aggiungere un induttore di disaccoppiamento <strong data-start=\"1147\" data-end=\"1186\">(per <a href=\"https:\/\/webstore.iec.ch\/en\/publication\/1865\" target=\"_blank\" rel=\"noopener\">CEI 60364<\/a>)<\/strong> garantire un corretto coordinamento energetico.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"1233\" data-end=\"1295\"><strong data-start=\"1237\" data-end=\"1293\">Passaggio 2: preparare il quadro di distribuzione e la guida DIN<\/strong><\/h3>\r\n<ul data-start=\"1296\" data-end=\"1792\">\r\n \t<li data-start=\"1296\" data-end=\"1445\">\r\n<p data-start=\"1298\" data-end=\"1445\">Assicurarsi che il quadro di distribuzione sia completamente diseccitato. Verificare con un multimetro o un rilevatore di tensione su tutte le fasi e il neutro in ingresso.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1446\" data-end=\"1529\">\r\n<p data-start=\"1448\" data-end=\"1529\">Verificare che la guida DIN sia fissata saldamente, pulita e priva di corrosione.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1530\" data-end=\"1617\">\r\n<p data-start=\"1532\" data-end=\"1617\">Lasciare uno spazio adeguato attorno all'SPD per la ventilazione e la manutenzione futura.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1618\" data-end=\"1792\">\r\n<p data-start=\"1620\" data-end=\"1792\">Suggerimento dalla pratica sul campo: montare sempre gli SPD modulari verticalmente quando possibile. Ci\u00f2 supporta la dissipazione naturale del calore e rende le finestre degli indicatori pi\u00f9 facili da ispezionare.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"1799\" data-end=\"1851\"><strong data-start=\"1803\" data-end=\"1849\">Passaggio 3: collegare i conduttori (L, N, PE)<\/strong><\/h3>\r\n<p data-start=\"1852\" data-end=\"1944\">Il cablaggio corretto \u00e8 fondamentale, poich\u00e9 collegamenti scadenti possono compromettere completamente la protezione dalle sovratensioni.<\/p>\r\n\r\n<ul data-start=\"1946\" data-end=\"2853\">\r\n \t<li data-start=\"1946\" data-end=\"2093\">\r\n<p data-start=\"1948\" data-end=\"1969\"><strong data-start=\"1948\" data-end=\"1967\">Dimensione del conduttore:<\/strong><\/p>\r\n\r\n<ul data-start=\"1972\" data-end=\"2093\">\r\n \t<li data-start=\"1972\" data-end=\"2032\">\r\n<p data-start=\"1974\" data-end=\"2032\">SPD di tipo 2 (residenziale\/commerciale): rame \u2265 6 mm\u00b2.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2035\" data-end=\"2093\">\r\n<p data-start=\"2037\" data-end=\"2093\">SPD di tipo 1 (all'ingresso di servizio): rame \u2265 16 mm\u00b2.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"2094\" data-end=\"2359\">\r\n<p data-start=\"2096\" data-end=\"2119\"><strong data-start=\"2096\" data-end=\"2117\">Ordine di connessione:<\/strong><\/p>\r\n\r\n<ul data-start=\"2122\" data-end=\"2359\">\r\n \t<li data-start=\"2122\" data-end=\"2195\">\r\n<p data-start=\"2124\" data-end=\"2195\">Collegare i conduttori di fase (L1, L2, L3) ai terminali di ingresso dell'SPD.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2198\" data-end=\"2266\">\r\n<p data-start=\"2200\" data-end=\"2266\">Collegare il neutro (N) se richiesto dal tipo SPD (4P o 3+1).<\/p>\r\n<\/li>\r\n \t<li data-start=\"2269\" data-end=\"2359\">\r\n<p data-start=\"2271\" data-end=\"2359\">Collegare la terra (PE) direttamente alla barra di terra con il conduttore pi\u00f9 corto possibile.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"2360\" data-end=\"2519\">\r\n<p data-start=\"2362\" data-end=\"2519\"><strong data-start=\"2362\" data-end=\"2373\">Coppia:<\/strong> Stringere i terminali secondo la scheda tecnica del produttore (tipicamente 2,5\u20133,5 Nm per 6 mm\u00b2 Cu). I terminali allentati creano rischi di surriscaldamento e archi elettrici.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2520\" data-end=\"2706\">\r\n<p data-start=\"2522\" data-end=\"2706\"><strong data-start=\"2522\" data-end=\"2549\">Perch\u00e9 i lead brevi sono importanti:<\/strong> Ogni 10 cm di lunghezza del filo aggiunge circa 1 kV di sovratensione residua. Ci\u00f2 significa che i cavi lunghi o a spirale possono sollevarsi oltre la tolleranza dell'apparecchiatura.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2707\" data-end=\"2853\">\r\n<p data-start=\"2709\" data-end=\"2853\"><strong data-start=\"2709\" data-end=\"2728\">Errore comune:<\/strong> Far passare il filo PE parallelamente ai fili di fase su lunghe distanze. Ci\u00f2 aumenta l'accoppiamento induttivo e indebolisce la protezione.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"2860\" data-end=\"2914\"><strong data-start=\"2864\" data-end=\"2912\">Passaggio 4: aggiungere la protezione di backup (fusibile o MCB)<\/strong><\/h3>\r\n<ul data-start=\"2915\" data-end=\"3599\">\r\n \t<li data-start=\"2915\" data-end=\"3148\">\r\n<p data-start=\"2917\" data-end=\"3148\"><strong data-start=\"2917\" data-end=\"2932\">Perch\u00e9 necessario:<\/strong> Un SPD \u00e8 collegato in parallelo al sistema. Se si guasta a causa di una forte esposizione a sovratensioni, potrebbe andare in cortocircuito. Un dispositivo di protezione di backup dedicato garantisce una disconnessione sicura senza far scattare l'interruttore principale.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3149\" data-end=\"3454\">\r\n<p data-start=\"3151\" data-end=\"3165\"><strong data-start=\"3151\" data-end=\"3163\">Opzioni:<\/strong><\/p>\r\n\r\n<ul data-start=\"3168\" data-end=\"3454\">\r\n \t<li data-start=\"3168\" data-end=\"3294\">\r\n<p data-start=\"3170\" data-end=\"3294\">SPD standard: collegamento tramite MCB (20\u201332 A tipico per uso residenziale) o fusibile, classificato in base a In e Imax dell'SPD.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3297\" data-end=\"3454\">\r\n<p data-start=\"3299\" data-end=\"3454\">Soluzione integrata: utilizzare SPD con fusibili di riserva integrati (ad esempio, la nostra serie BR-30FU), che elimina la necessit\u00e0 di un dispositivo di protezione esterno.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"3455\" data-end=\"3599\">\r\n<p data-start=\"3457\" data-end=\"3599\">Standard: IEC 61643 e BS 7671 raccomandano entrambi un coordinamento selettivo tra SPD e interruttori a monte per evitare interventi intempestivi.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"3606\" data-end=\"3659\"><strong data-start=\"3610\" data-end=\"3657\">Passaggio 5: garantire una messa a terra e un collegamento adeguati<\/strong><\/h3>\r\n<ul data-start=\"3660\" data-end=\"4261\">\r\n \t<li data-start=\"3660\" data-end=\"3799\">\r\n<p data-start=\"3662\" data-end=\"3799\"><strong data-start=\"3662\" data-end=\"3687\">Percorso diretto verso la Terra:<\/strong> Il terminale di terra dell'SPD deve essere collegato direttamente alla barra PE. Non eseguire il collegamento a margherita tramite altri dispositivi.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3800\" data-end=\"3957\">\r\n<p data-start=\"3802\" data-end=\"3957\"><strong data-start=\"3802\" data-end=\"3823\">Resistenza di terra:<\/strong> Secondo la norma IEC 60364, la resistenza di terra dovrebbe generalmente essere \u226410 \u03a9, con \u22641 \u03a9 preferibile nei data center e nelle strutture di telecomunicazione.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3958\" data-end=\"4128\">\r\n<p data-start=\"3960\" data-end=\"4128\"><strong data-start=\"3960\" data-end=\"3986\">Collegamento equipotenziale:<\/strong> Assicurarsi che tutti gli involucri metallici e le schermature dei cavi siano collegati allo stesso potenziale per evitare pericolose differenze di potenziale durante le sovratensioni.<\/p>\r\n<\/li>\r\n \t<li data-start=\"4129\" data-end=\"4261\">\r\n<p data-start=\"4131\" data-end=\"4261\"><strong data-start=\"4131\" data-end=\"4139\">Mancia:<\/strong> Utilizzare conduttori piatti o rame intrecciato quando possibile per PE, poich\u00e9 hanno un'induttanza inferiore rispetto ai conduttori rotondi.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"4268\" data-end=\"4312\"><strong data-start=\"4272\" data-end=\"4310\">Passaggio 6: messa in servizio e test<\/strong><\/h3>\r\n<p data-start=\"4313\" data-end=\"4383\">Prima di ridare tensione al sistema, verificare attentamente l'installazione:<\/p>\r\n\r\n<ol data-start=\"4385\" data-end=\"5166\">\r\n \t<li data-start=\"4385\" data-end=\"4561\">\r\n<p data-start=\"4388\" data-end=\"4412\"><strong data-start=\"4388\" data-end=\"4410\">Ispezione visiva:<\/strong><\/p>\r\n\r\n<ul data-start=\"4416\" data-end=\"4561\">\r\n \t<li data-start=\"4416\" data-end=\"4465\">\r\n<p data-start=\"4418\" data-end=\"4465\">Confermare che tutti i collegamenti siano corretti (L\/N\/PE).<\/p>\r\n<\/li>\r\n \t<li data-start=\"4469\" data-end=\"4523\">\r\n<p data-start=\"4471\" data-end=\"4523\">Verificare che la lunghezza dei conduttori sia la pi\u00f9 corta possibile.<\/p>\r\n<\/li>\r\n \t<li data-start=\"4527\" data-end=\"4561\">\r\n<p data-start=\"4529\" data-end=\"4561\">Controllare la coppia su ciascun terminale.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"4562\" data-end=\"4682\">\r\n<p data-start=\"4565\" data-end=\"4587\"><strong data-start=\"4565\" data-end=\"4585\">Prova di isolamento:<\/strong><\/p>\r\n\r\n<ul data-start=\"4591\" data-end=\"4682\">\r\n \t<li data-start=\"4591\" data-end=\"4682\">\r\n<p data-start=\"4593\" data-end=\"4682\">Eseguire test di resistenza di isolamento tra L\u2013N, L\u2013PE, N\u2013PE per garantire l'integrit\u00e0 del cablaggio.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"4683\" data-end=\"4869\">\r\n<p data-start=\"4686\" data-end=\"4707\"><strong data-start=\"4686\" data-end=\"4705\">Controllo all'accensione:<\/strong><\/p>\r\n\r\n<ul data-start=\"4711\" data-end=\"4869\">\r\n \t<li data-start=\"4711\" data-end=\"4869\">\r\n<p data-start=\"4713\" data-end=\"4786\">Accendere l'alimentazione e osservare la finestra dell'indicatore di stato sull'SPD:<\/p>\r\n\r\n<ul data-start=\"4792\" data-end=\"4869\">\r\n \t<li data-start=\"4792\" data-end=\"4815\">\r\n<p data-start=\"4794\" data-end=\"4815\">Verde = operativo<\/p>\r\n<\/li>\r\n \t<li data-start=\"4821\" data-end=\"4869\">\r\n<p data-start=\"4823\" data-end=\"4869\">Rosso = il modulo \u00e8 guasto e deve essere sostituito<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"4870\" data-end=\"5003\">\r\n<p data-start=\"4873\" data-end=\"4916\"><strong data-start=\"4873\" data-end=\"4914\">Test di segnalazione remota (se disponibile):<\/strong><\/p>\r\n\r\n<ul data-start=\"4920\" data-end=\"5003\">\r\n \t<li data-start=\"4920\" data-end=\"5003\">\r\n<p data-start=\"4922\" data-end=\"5003\">Per gli SPD con contatti remoti, verificare l'integrazione dell'allarme con i sistemi BMS\/SCADA.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"5004\" data-end=\"5166\">\r\n<p data-start=\"5007\" data-end=\"5027\"><strong data-start=\"5007\" data-end=\"5025\">Documentazione:<\/strong><\/p>\r\n\r\n<ul data-start=\"5031\" data-end=\"5166\">\r\n \t<li data-start=\"5031\" data-end=\"5166\">\r\n<p data-start=\"5033\" data-end=\"5166\">Registrare il tipo di SPD, il numero del modello, i parametri nominali (Uc, In, Imax, Up), la data di installazione e la posizione del circuito per la manutenzione futura.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n<\/ol>\r\n<p data-start=\"5173\" data-end=\"5607\"><strong data-start=\"5175\" data-end=\"5222\">Candidato allo snippet in primo piano (stile riepilogo):<\/strong><br data-start=\"5222\" data-end=\"5225\" \/><em data-start=\"5225\" data-end=\"5605\">Per installare un dispositivo di protezione da sovratensione di Tipo 2, scollegare l'alimentazione e montarlo sulla guida DIN all'interno del quadro di distribuzione. Collegare i conduttori L\/N\/PE utilizzando rame da \u2265 6 mm\u00b2 con una lunghezza totale di \u2264 0,5 m, aggiungere un fusibile di riserva o un MCB e garantire la messa a terra diretta sulla barra PE. Dopo aver serrato alla coppia corretta, eseguire test di isolamento, controllare l'indicatore di stato e documentare l'installazione.<\/em><\/p>\r\n<img class=\"alignnone size-medium wp-image-2236\" src=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2025\/08\/How-to-Install-Type-2-Surge-Protector.jpg\" alt=\"Come installare il dispositivo di protezione da sovratensione di tipo 2\" width=\"1000\" \/>\r\n\r\n&nbsp;\r\n<h2 data-start=\"321\" data-end=\"356\">Schemi elettrici per SPD di tipo 2<\/h2>\r\n<h3 data-start=\"358\" data-end=\"404\"><strong data-start=\"362\" data-end=\"402\">Sistema monofase (230 V, TN-S\/TT)<\/strong><\/h3>\r\n<ul data-start=\"405\" data-end=\"1033\">\r\n \t<li data-start=\"405\" data-end=\"634\">\r\n<p data-start=\"407\" data-end=\"427\"><strong data-start=\"407\" data-end=\"425\">Configurazione:<\/strong><\/p>\r\n\r\n<ul data-start=\"430\" data-end=\"634\">\r\n \t<li data-start=\"430\" data-end=\"496\">\r\n<p data-start=\"432\" data-end=\"496\">Collegare l'SPD tra L e N e tra N e PE.<\/p>\r\n<\/li>\r\n \t<li data-start=\"499\" data-end=\"634\">\r\n<p data-start=\"501\" data-end=\"634\">Per i sistemi TT, assicurarsi che il percorso di protezione N-PE utilizzi uno spinterometro o una combinazione MOV+GDT per evitare correnti di dispersione continue.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"635\" data-end=\"851\">\r\n<p data-start=\"637\" data-end=\"661\"><strong data-start=\"637\" data-end=\"659\">Protezione del backup:<\/strong><\/p>\r\n\r\n<ul data-start=\"664\" data-end=\"851\">\r\n \t<li data-start=\"664\" data-end=\"768\">\r\n<p data-start=\"666\" data-end=\"768\">\u00c8 necessario installare un fusibile o un interruttore automatico dedicato sul conduttore di fase (L) che alimenta il ramo SPD.<\/p>\r\n<\/li>\r\n \t<li data-start=\"771\" data-end=\"851\">\r\n<p data-start=\"773\" data-end=\"851\">Configurazione residenziale tipica: MCB da 20\u201332 A classificato secondo In\/Imax di SPD.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"852\" data-end=\"1033\">\r\n<p data-start=\"854\" data-end=\"1033\"><strong data-start=\"854\" data-end=\"873\">Perch\u00e9 \u00e8 importante:<\/strong> Senza un'adeguata protezione di backup, un guasto dell'SPD pu\u00f2 causare un cortocircuito permanente, facendo scattare l'interruttore principale e interrompendo l'alimentazione all'intera installazione.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"1040\" data-end=\"1082\"><strong data-start=\"1044\" data-end=\"1080\">Sistema trifase (400 V, TN-S)<\/strong><\/h3>\r\n<ul data-start=\"1083\" data-end=\"1836\">\r\n \t<li data-start=\"1083\" data-end=\"1297\">\r\n<p data-start=\"1085\" data-end=\"1105\"><strong data-start=\"1085\" data-end=\"1103\">Configurazione:<\/strong><\/p>\r\n\r\n<ul data-start=\"1108\" data-end=\"1297\">\r\n \t<li data-start=\"1108\" data-end=\"1163\">\r\n<p data-start=\"1110\" data-end=\"1163\">SPD collegato tramite L1-PE, L2-PE, L3-PE, N-PE.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1166\" data-end=\"1297\">\r\n<p data-start=\"1168\" data-end=\"1297\">Configurazione 3+1 consigliata: MOV su ciascuna fase al neutro (L1-N, L2-N, L3-N), pi\u00f9 uno spinterometro tra N e PE.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"1298\" data-end=\"1492\">\r\n<p data-start=\"1300\" data-end=\"1338\"><strong data-start=\"1300\" data-end=\"1336\">Vantaggi della configurazione 3+1:<\/strong><\/p>\r\n\r\n<ul data-start=\"1341\" data-end=\"1492\">\r\n \t<li data-start=\"1341\" data-end=\"1396\">\r\n<p data-start=\"1343\" data-end=\"1396\">Riduce la tensione residua tra neutro e terra.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1399\" data-end=\"1492\">\r\n<p data-start=\"1401\" data-end=\"1492\">Fornisce un migliore coordinamento nei sistemi TT e TN-S in cui pu\u00f2 verificarsi uno spostamento neutro.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"1493\" data-end=\"1620\">\r\n<p data-start=\"1495\" data-end=\"1519\"><strong data-start=\"1495\" data-end=\"1517\">Protezione del backup:<\/strong><\/p>\r\n\r\n<ul data-start=\"1522\" data-end=\"1620\">\r\n \t<li data-start=\"1522\" data-end=\"1620\">\r\n<p data-start=\"1524\" data-end=\"1620\">In genere, sono necessari MCB da 32\u201363 A per ciascun ramo SPD nei sistemi industriali\/commerciali.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"1621\" data-end=\"1836\">\r\n<p data-start=\"1623\" data-end=\"1836\"><strong data-start=\"1623\" data-end=\"1644\">Consiglio professionale:<\/strong> Quando si proteggono UPS trifase o carichi motore, verificare sempre che la corrente nominale di cortocircuito (Isc) dell'SPD corrisponda al livello di guasto nel punto di distribuzione (requisito IEC 61643-11).<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"1843\" data-end=\"1899\"><strong data-start=\"1847\" data-end=\"1897\">Integrazione UPS (gruppo di continuit\u00e0)<\/strong><\/h3>\r\n<ul data-start=\"1900\" data-end=\"2715\">\r\n \t<li data-start=\"1900\" data-end=\"2067\">\r\n<p data-start=\"1902\" data-end=\"2067\"><strong data-start=\"1902\" data-end=\"1916\">Posizionamento:<\/strong> Installare l'SPD di tipo 2 a monte del raddrizzatore dell'UPS. Ci\u00f2 garantisce che i picchi provenienti dalla rete pubblica vengano bloccati prima che raggiungano i componenti elettronici dell'UPS.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2068\" data-end=\"2341\">\r\n<p data-start=\"2070\" data-end=\"2105\"><strong data-start=\"2070\" data-end=\"2103\">Perch\u00e9 a monte, non a valle:<\/strong><\/p>\r\n\r\n<ul data-start=\"2108\" data-end=\"2341\">\r\n \t<li data-start=\"2108\" data-end=\"2238\">\r\n<p data-start=\"2110\" data-end=\"2238\">L'installazione a valle pu\u00f2 causare scatti intempestivi, poich\u00e9 gli inverter dell'UPS possono generare armoniche e transitori di commutazione rapidi.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2241\" data-end=\"2341\">\r\n<p data-start=\"2243\" data-end=\"2341\">Il posizionamento a monte protegge i raddrizzatori, i condensatori CC e i moduli inverter, prolungando la durata dell'UPS.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"2342\" data-end=\"2544\">\r\n<p data-start=\"2344\" data-end=\"2376\"><strong data-start=\"2344\" data-end=\"2374\">Esempio con i nostri prodotti:<\/strong><\/p>\r\n\r\n<ul data-start=\"2379\" data-end=\"2544\">\r\n \t<li data-start=\"2379\" data-end=\"2544\">\r\n<p data-start=\"2381\" data-end=\"2544\">SLP40-275\/3S+1 a monte di un UPS a doppia conversione garantisce che le correnti di picco fino a 40 kA vengano deviate in modo sicuro, prevenendo stress sugli IGBT e sulle batterie dell'inverter.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"2545\" data-end=\"2715\">\r\n<p data-start=\"2547\" data-end=\"2715\"><strong data-start=\"2547\" data-end=\"2568\">Nota tecnica:<\/strong> Nelle strutture IT o sanitarie critiche, prendere in considerazione la combinazione di cascata di Tipo 1 + Tipo 2 all'ingresso dell'UPS per la protezione da fulmini + sovratensione di commutazione.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h2 data-start=\"2722\" data-end=\"2751\">Errori comuni da evitare<\/h2>\r\n<h3 data-start=\"2753\" data-end=\"2781\"><strong data-start=\"2757\" data-end=\"2779\">1. Cablaggio troppo lungo<\/strong><\/h3>\r\n<ul data-start=\"2782\" data-end=\"3103\">\r\n \t<li data-start=\"2782\" data-end=\"2848\">\r\n<p data-start=\"2784\" data-end=\"2848\"><strong data-start=\"2784\" data-end=\"2796\">Errore:<\/strong> SPD collegato con lunghezza totale del conduttore &gt;0,5 m.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2849\" data-end=\"2990\">\r\n<p data-start=\"2851\" data-end=\"2990\"><strong data-start=\"2851\" data-end=\"2865\">Perch\u00e9 sbagliato:<\/strong> Ogni 10 cm aggiunge ~1 kV alla tensione residua (Su). I componenti elettronici sensibili (resistenza nominale a 1,5 kV) potrebbero comunque essere distrutti.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2991\" data-end=\"3103\">\r\n<p data-start=\"2993\" data-end=\"3103\"><strong data-start=\"2993\" data-end=\"3011\">Migliore pratica:<\/strong> Mantenere l'SPD il pi\u00f9 vicino possibile alle sbarre; utilizzare percorsi rettilinei, evitare anelli e curve strette.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"3105\" data-end=\"3138\"><strong data-start=\"3109\" data-end=\"3136\">2. Dimensioni del conduttore errate<\/strong><\/h3>\r\n<ul data-start=\"3139\" data-end=\"3454\">\r\n \t<li data-start=\"3139\" data-end=\"3194\">\r\n<p data-start=\"3141\" data-end=\"3194\"><strong data-start=\"3141\" data-end=\"3153\">Errore:<\/strong> Utilizzo di cavi &lt;6 mm\u00b2 Cu per SPD di tipo 2.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3195\" data-end=\"3284\">\r\n<p data-start=\"3197\" data-end=\"3284\"><strong data-start=\"3197\" data-end=\"3213\">Conseguenza:<\/strong> Riscaldamento eccessivo, rischio di rottura dell'isolamento durante forti sovratensioni.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3285\" data-end=\"3454\">\r\n<p data-start=\"3287\" data-end=\"3307\"><strong data-start=\"3287\" data-end=\"3305\">Migliore pratica:<\/strong><\/p>\r\n\r\n<ul data-start=\"3310\" data-end=\"3454\">\r\n \t<li data-start=\"3310\" data-end=\"3349\">\r\n<p data-start=\"3312\" data-end=\"3349\">SPD di tipo 2 \u2192 \u22656 mm\u00b2 Cu (IEC 60364).<\/p>\r\n<\/li>\r\n \t<li data-start=\"3352\" data-end=\"3380\">\r\n<p data-start=\"3354\" data-end=\"3380\">SPD tipo 1 \u2192 \u226516 mm\u00b2 Cu.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3383\" data-end=\"3454\">\r\n<p data-start=\"3385\" data-end=\"3454\">Utilizzare conduttori a bassa induttanza (rame intrecciato o piatto, se possibile).<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"3456\" data-end=\"3489\"><strong data-start=\"3460\" data-end=\"3487\">3. Nessuna protezione di backup<\/strong><\/h3>\r\n<ul data-start=\"3490\" data-end=\"3839\">\r\n \t<li data-start=\"3490\" data-end=\"3548\">\r\n<p data-start=\"3492\" data-end=\"3548\"><strong data-start=\"3492\" data-end=\"3504\">Errore:<\/strong> Collegamento diretto dell'SPD senza MCB\/fusibile.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3549\" data-end=\"3669\">\r\n<p data-start=\"3551\" data-end=\"3669\"><strong data-start=\"3551\" data-end=\"3567\">Conseguenza:<\/strong> Se l'SPD si guasta in modalit\u00e0 cortocircuito, pu\u00f2 far scattare l'interruttore principale, spegnendo l'intera struttura.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3670\" data-end=\"3839\">\r\n<p data-start=\"3672\" data-end=\"3692\"><strong data-start=\"3672\" data-end=\"3690\">Migliore pratica:<\/strong><\/p>\r\n\r\n<ul data-start=\"3695\" data-end=\"3839\">\r\n \t<li data-start=\"3695\" data-end=\"3739\">\r\n<p data-start=\"3697\" data-end=\"3739\">Installare sempre un interruttore\/fusibile dedicato.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3742\" data-end=\"3839\">\r\n<p data-start=\"3744\" data-end=\"3839\">Utilizzare i modelli SPD con fusibili integrati (ad esempio la nostra serie BR-30FU) per un'installazione semplificata.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"3841\" data-end=\"3867\"><strong data-start=\"3845\" data-end=\"3865\">4. Messa a terra inadeguata<\/strong><\/h3>\r\n<ul data-start=\"3868\" data-end=\"4281\">\r\n \t<li data-start=\"3868\" data-end=\"3963\">\r\n<p data-start=\"3870\" data-end=\"3963\"><strong data-start=\"3870\" data-end=\"3882\">Errore:<\/strong> Terra ad alta resistenza (&gt;30 \u03a9) o percorso parallelo lungo con conduttori di fase.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3964\" data-end=\"4080\">\r\n<p data-start=\"3966\" data-end=\"4080\"><strong data-start=\"3966\" data-end=\"3982\">Conseguenza:<\/strong> La corrente di picco non pu\u00f2 essere scaricata in modo sicuro, aumentando le tensioni di contatto e mettendo a rischio apparecchiature\/persone.<\/p>\r\n<\/li>\r\n \t<li data-start=\"4081\" data-end=\"4281\">\r\n<p data-start=\"4083\" data-end=\"4103\"><strong data-start=\"4083\" data-end=\"4101\">Migliore pratica:<\/strong><\/p>\r\n\r\n<ul data-start=\"4106\" data-end=\"4281\">\r\n \t<li data-start=\"4106\" data-end=\"4157\">\r\n<p data-start=\"4108\" data-end=\"4157\">Garantire una resistenza di terra \u226410 \u03a9 (IEC 60364).<\/p>\r\n<\/li>\r\n \t<li data-start=\"4160\" data-end=\"4204\">\r\n<p data-start=\"4162\" data-end=\"4204\">Nei data center\/ospedali, puntare a \u22641 \u03a9.<\/p>\r\n<\/li>\r\n \t<li data-start=\"4207\" data-end=\"4281\">\r\n<p data-start=\"4209\" data-end=\"4281\">Collegare il terminale di terra dell'SPD direttamente alla barra PE con il conduttore pi\u00f9 corto.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"4283\" data-end=\"4317\"><strong data-start=\"4287\" data-end=\"4315\">5. Ignorare la coordinazione<\/strong><\/h3>\r\n<ul data-start=\"4318\" data-end=\"4707\">\r\n \t<li data-start=\"4318\" data-end=\"4436\">\r\n<p data-start=\"4320\" data-end=\"4436\"><strong data-start=\"4320\" data-end=\"4332\">Errore:<\/strong> Installare solo SPD di Tipo 2 senza Tipo 1 (per fulminazione diretta) o Tipo 3 (per apparecchiature terminali).<\/p>\r\n<\/li>\r\n \t<li data-start=\"4437\" data-end=\"4548\">\r\n<p data-start=\"4439\" data-end=\"4548\"><strong data-start=\"4439\" data-end=\"4455\">Conseguenza:<\/strong> Il tipo 2 da solo non pu\u00f2 assorbire le correnti di fulmine ad alta energia n\u00e9 proteggere i dispositivi terminali delicati.<\/p>\r\n<\/li>\r\n \t<li data-start=\"4549\" data-end=\"4707\">\r\n<p data-start=\"4551\" data-end=\"4707\"><strong data-start=\"4551\" data-end=\"4569\">Migliore pratica:<\/strong> Seguire il principio della cascata (Tipo 1 + Tipo 2 + Tipo 3), garantendo una distanza di coordinamento \u226510 m o utilizzare induttori di disaccoppiamento se &lt;10 m.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h2 data-start=\"4714\" data-end=\"4745\">Manutenzione e monitoraggio<\/h2>\r\n<p data-start=\"4747\" data-end=\"4838\">Un limitatore di sovratensione non \u00e8 \u201cinstalla e dimentica\u201d. Il monitoraggio continuo garantisce affidabilit\u00e0.<\/p>\r\n\r\n<h3 data-start=\"4840\" data-end=\"4866\"><strong data-start=\"4844\" data-end=\"4864\">1. Controlli visivi<\/strong><\/h3>\r\n<ul data-start=\"4867\" data-end=\"4999\">\r\n \t<li data-start=\"4867\" data-end=\"4945\">\r\n<p data-start=\"4869\" data-end=\"4945\">La maggior parte degli SPD dispongono di una finestra di stato (verde = operativo, rosso = guasto).<\/p>\r\n<\/li>\r\n \t<li data-start=\"4946\" data-end=\"4999\">\r\n<p data-start=\"4948\" data-end=\"4999\">Ispezionare mensilmente o dopo eventi noti di fulmini.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"5001\" data-end=\"5043\"><strong data-start=\"5005\" data-end=\"5041\">2. Monitoraggio remoto (BMS\/SCADA)<\/strong><\/h3>\r\n<ul data-start=\"5044\" data-end=\"5266\">\r\n \t<li data-start=\"5044\" data-end=\"5149\">\r\n<p data-start=\"5046\" data-end=\"5149\">Gli SPD con contatti di segnalazione remota (NO\/NC) possono essere cablati in un sistema di gestione dell'edificio (BMS).<\/p>\r\n<\/li>\r\n \t<li data-start=\"5150\" data-end=\"5266\">\r\n<p data-start=\"5152\" data-end=\"5266\">Ci\u00f2 consente ai gestori della struttura di ricevere allarmi in caso di guasto di un SPD, anche se il pannello non viene ispezionato fisicamente.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"5268\" data-end=\"5295\"><strong data-start=\"5272\" data-end=\"5293\">3. Conteggio degli eventi<\/strong><\/h3>\r\n<ul data-start=\"5296\" data-end=\"5491\">\r\n \t<li data-start=\"5296\" data-end=\"5360\">\r\n<p data-start=\"5298\" data-end=\"5360\">Utilizzare contatori di picchi come BRSC-01 per registrare ogni evento di picco.<\/p>\r\n<\/li>\r\n \t<li data-start=\"5361\" data-end=\"5491\">\r\n<p data-start=\"5363\" data-end=\"5491\">I registri aiutano nella manutenzione predittiva: se un SPD ha gestito pi\u00f9 eventi ad alta energia, pianifica la sostituzione prima del guasto.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"5493\" data-end=\"5517\"><strong data-start=\"5497\" data-end=\"5515\">4. Sostituzione<\/strong><\/h3>\r\n<ul data-start=\"5518\" data-end=\"5670\">\r\n \t<li data-start=\"5518\" data-end=\"5597\">\r\n<p data-start=\"5520\" data-end=\"5597\">Gli SPD modulari (come le nostre serie SLP e BR) sono modelli plug-in\/plug-out.<\/p>\r\n<\/li>\r\n \t<li data-start=\"5598\" data-end=\"5670\">\r\n<p data-start=\"5600\" data-end=\"5670\">Sostituisci la cartuccia senza ricablare la base, riducendo al minimo i tempi di inattivit\u00e0.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"5672\" data-end=\"5699\"><strong data-start=\"5676\" data-end=\"5697\">5. Test annuali<\/strong><\/h3>\r\n<ul data-start=\"5700\" data-end=\"5904\">\r\n \t<li data-start=\"5700\" data-end=\"5758\">\r\n<p data-start=\"5702\" data-end=\"5758\">Eseguire il test della resistenza di isolamento tra i conduttori.<\/p>\r\n<\/li>\r\n \t<li data-start=\"5759\" data-end=\"5834\">\r\n<p data-start=\"5761\" data-end=\"5834\">Misurare annualmente la resistenza di terra (obiettivo \u226410 \u03a9 o secondo la normativa locale).<\/p>\r\n<\/li>\r\n \t<li data-start=\"5835\" data-end=\"5904\">\r\n<p data-start=\"5837\" data-end=\"5904\">Documentare i risultati dei test per gli audit di conformit\u00e0 e i registri di garanzia.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h2 data-start=\"8172\" data-end=\"8187\">Conclusione<\/h2>\r\n<p data-start=\"8188\" data-end=\"8449\">L'installazione di un limitatore di sovratensione di tipo 2 non \u00e8 complicata, ma deve essere eseguita correttamente. Seguendo le corrette regole di installazione (cablaggio corto, dimensioni corrette del conduttore, messa a terra affidabile e protezione di backup) ti assicurerai che il tuo SPD funzioni esattamente come progettato.<\/p>\r\n<p data-start=\"8451\" data-end=\"8610\">Un UPS da solo non \u00e8 sufficiente per proteggere i sistemi sensibili. Abbinandolo a un SPD di tipo 2 installato correttamente si ottiene la resilienza richiesta dalle strutture moderne.<\/p>\r\n<p data-start=\"8612\" data-end=\"8947\">Gli SPD della serie SLP40-275\/3S+1 e BR-30FU della nostra azienda sono progettati per una facile installazione su guida DIN, funzionalit\u00e0 di sicurezza integrate e conformit\u00e0 agli standard IEC 61643. Che tu stia proteggendo un quadro residenziale, un ufficio commerciale o un sistema UPS industriale, queste soluzioni garantiscono affidabilit\u00e0 e tranquillit\u00e0 a lungo termine.<\/p>","protected":false},"featured_media":2158,"parent":0,"menu_order":123,"template":"","meta":{"_acf_changed":false},"blog_category":[8],"class_list":["post-2171","blog","type-blog","status-publish","has-post-thumbnail","hentry","blog_category-company-news"],"acf":{"des":"This guide explains how to install a Type 2 surge protector step by step, with wiring diagrams, safety checks, and IEC-compliant best practices. It highlights common mistakes to avoid, maintenance tips, and integration with UPS systems, helping engineers ensure reliable surge protection for critical equipment.","txt":"<h2 data-start=\"333\" data-end=\"350\">Introduction<\/h2>\r\n<p data-start=\"351\" data-end=\"630\">Power surges are one of the most common causes of electrical equipment failure. While lightning strikes account for some surges, the majority are caused by switching operations, motors, or disturbances within the grid itself. That\u2019s where a Type 2 surge protector comes in.<\/p>\r\n<p data-start=\"632\" data-end=\"883\">Type 2 SPDs (Surge Protective Devices) are installed in the main distribution board or upstream of UPS systems. Their job is to clamp down on transient overvoltages and safely divert surge currents to ground, keeping your sensitive devices safe.<\/p>\r\n<p data-start=\"885\" data-end=\"1235\">In this guide, we\u2019ll break down how to install a Type 2 surge protector step by step. You\u2019ll learn the tools you need, safety checks, wiring diagrams, and testing methods. And we\u2019ll go deeper than most beginner blogs\u2014referencing IEC 61643 standards, wiring best practices, and practical engineering tips that will save you from costly mistakes.<\/p>\r\n\r\n<h2 data-start=\"1242\" data-end=\"1280\">What is a Type 2 Surge Protector?<\/h2>\r\n<p data-start=\"1281\" data-end=\"1394\">A <a href=\"https:\/\/www.britecelectric.com\/product-category\/ac-power-surge-protection\/type-2-surge-protective-device\/\" target=\"_blank\" rel=\"noopener\"><strong data-start=\"1283\" data-end=\"1297\">Type 2 SPD<\/strong> <\/a>is designed to handle surge currents from indirect lightning strikes and switching operations.<\/p>\r\n\r\n<ul data-start=\"1396\" data-end=\"1718\">\r\n \t<li data-start=\"1396\" data-end=\"1520\">\r\n<p data-start=\"1398\" data-end=\"1520\">Where it goes: Installed in the main distribution board (consumer unit) or on the input side of UPS systems.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1521\" data-end=\"1621\">\r\n<p data-start=\"1523\" data-end=\"1621\">What it protects against: Induced lightning surges, switching transients, grid disturbances.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1622\" data-end=\"1718\">\r\n<p data-start=\"1624\" data-end=\"1718\">How it works: By clamping the surge voltage (Up) and diverting energy to the earth (PE).<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"1720\" data-end=\"1762\"><strong data-start=\"1720\" data-end=\"1760\">Key parameters defined by IEC 61643:<\/strong><\/p>\r\n\r\n<ul data-start=\"1763\" data-end=\"2155\">\r\n \t<li data-start=\"1763\" data-end=\"1866\">\r\n<p data-start=\"1765\" data-end=\"1866\">Uc (Max Continuous Operating Voltage): The maximum RMS voltage the SPD can handle continuously.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1867\" data-end=\"1960\">\r\n<p data-start=\"1869\" data-end=\"1960\">Up (Voltage Protection Level): The clamping level that remains on the protected side.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1961\" data-end=\"2067\">\r\n<p data-start=\"1963\" data-end=\"2067\">In (Nominal Discharge Current): Surge current the SPD can withstand repeatedly (8\/20 \u03bcs waveform).<\/p>\r\n<\/li>\r\n \t<li data-start=\"2068\" data-end=\"2155\">\r\n<p data-start=\"2070\" data-end=\"2155\">Imax (Maximum Discharge Current): The largest single surge the SPD can survive.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"2157\" data-end=\"2228\">For example, our company\u2019s <a href=\"https:\/\/www.britecelectric.com\/product-category\/ac-power-surge-protection\/type-2-surge-protective-device\/\" target=\"_blank\" rel=\"noopener\"><strong data-start=\"2184\" data-end=\"2213\">SLP40-275\/3S+1 Type 2 SPD<\/strong><\/a> is rated at:<\/p>\r\n\r\n<ul data-start=\"2229\" data-end=\"2294\">\r\n \t<li data-start=\"2229\" data-end=\"2246\">\r\n<p data-start=\"2231\" data-end=\"2246\">Uc = 275 V AC<\/p>\r\n<\/li>\r\n \t<li data-start=\"2247\" data-end=\"2261\">\r\n<p data-start=\"2249\" data-end=\"2261\">In = 20 kA<\/p>\r\n<\/li>\r\n \t<li data-start=\"2262\" data-end=\"2278\">\r\n<p data-start=\"2264\" data-end=\"2278\">Imax = 40 kA<\/p>\r\n<\/li>\r\n \t<li data-start=\"2279\" data-end=\"2294\">\r\n<p data-start=\"2281\" data-end=\"2294\">Up \u2264 1.5 kV<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"2296\" data-end=\"2409\">This makes it ideal for residential, commercial, and industrial distribution boards, as well as UPS protection.<\/p>\r\n\r\n<h2 data-start=\"2416\" data-end=\"2459\">Safety Precautions Before Installation<\/h2>\r\n<p data-start=\"2460\" data-end=\"2553\">Installing an SPD means working inside a live distribution panel. Safety is non-negotiable.<\/p>\r\n\r\n<ol data-start=\"2555\" data-end=\"2997\">\r\n \t<li data-start=\"2555\" data-end=\"2616\">\r\n<p data-start=\"2558\" data-end=\"2616\">Disconnect the power completely at the main breaker.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2617\" data-end=\"2684\">\r\n<p data-start=\"2620\" data-end=\"2684\">Verify with a tester that all conductors are de-energized.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2685\" data-end=\"2790\">\r\n<p data-start=\"2688\" data-end=\"2790\">Apply Lockout\/Tagout (LOTO): Use lockout devices and tags to prevent accidental re-energization.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2791\" data-end=\"2861\">\r\n<p data-start=\"2794\" data-end=\"2861\">Wear PPE: Insulated gloves, protective glasses, safety shoes.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2862\" data-end=\"2997\">\r\n<p data-start=\"2865\" data-end=\"2997\">Check the earthing system: Ensure your PE bar is properly bonded and resistance meets standards (\u226410 \u03a9 in most jurisdictions).<\/p>\r\n<\/li>\r\n<\/ol>\r\n<p data-start=\"2999\" data-end=\"3173\"><strong data-start=\"3002\" data-end=\"3016\">Important:<\/strong> Local regulations (IEC 60364, BS 7671, NEC, or your national code) may require installation by a licensed electrician. Always comply with local standards.<\/p>\r\n<p data-start=\"2999\" data-end=\"3173\"><a href=\"https:\/\/www.britecelectric.com\/attachment\/br-20-4p-1type-2-surge-protection-device-jpg\/\" rel=\"attachment wp-att-2160\"><img class=\"alignnone wp-image-2160\" src=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2025\/08\/BR-20-4P-1Type-2-Surge-Protection-Device.jpg.webp\" alt=\"\" width=\"872\" \/><\/a><\/p>\r\n\r\n<h2 data-start=\"3180\" data-end=\"3218\">Tools and Materials You Will Need<\/h2>\r\n<ul data-start=\"3219\" data-end=\"3600\">\r\n \t<li data-start=\"3219\" data-end=\"3266\">\r\n<p data-start=\"3221\" data-end=\"3266\">Type 2 SPD module (e.g. SLP40-275\/3S+1)<\/p>\r\n<\/li>\r\n \t<li data-start=\"3267\" data-end=\"3311\">\r\n<p data-start=\"3269\" data-end=\"3311\">DIN rail mounting space inside the panel<\/p>\r\n<\/li>\r\n \t<li data-start=\"3312\" data-end=\"3381\">\r\n<p data-start=\"3314\" data-end=\"3381\">Copper conductor: \u22656 mm\u00b2 for Type 2 SPDs (IEC recommendation)<\/p>\r\n<\/li>\r\n \t<li data-start=\"3382\" data-end=\"3431\">\r\n<p data-start=\"3384\" data-end=\"3431\">Proper torque screwdriver or insulated wrench<\/p>\r\n<\/li>\r\n \t<li data-start=\"3432\" data-end=\"3541\">\r\n<p data-start=\"3434\" data-end=\"3541\">Backup protection device: MCB\/fuse, or choose SPD with built-in backup fuse (e.g. BR-30FU series)<\/p>\r\n<\/li>\r\n \t<li data-start=\"3542\" data-end=\"3576\">\r\n<p data-start=\"3544\" data-end=\"3576\">Insulation tester &amp; multimeter<\/p>\r\n<\/li>\r\n \t<li data-start=\"3577\" data-end=\"3600\">\r\n<p data-start=\"3579\" data-end=\"3600\">Earth bonding strap<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h2>Step-by-Step Installation Guide for <a href=\"https:\/\/www.britecelectric.com\/product-category\/ac-power-surge-protection\/type-2-surge-protective-device\/\" target=\"_blank\" rel=\"noopener\">Type 2 SPD<\/a><\/h2>\r\n&nbsp;\r\n\r\n<a href=\"https:\/\/www.britecelectric.com\/attachment\/type-2-spd-install\/\" rel=\"attachment wp-att-2158\"><img class=\"alignnone size-full wp-image-2158\" src=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2025\/08\/Type-2-SPD-install.jpg\" alt=\"\" width=\"732\" \/><\/a>\r\n<h3 data-start=\"477\" data-end=\"537\"><strong data-start=\"481\" data-end=\"535\">Step 1 \u2013 Plan and Select the Installation Location<\/strong><\/h3>\r\n<ul data-start=\"538\" data-end=\"1226\">\r\n \t<li data-start=\"538\" data-end=\"782\">\r\n<p data-start=\"540\" data-end=\"782\"><strong data-start=\"540\" data-end=\"550\">Where:<\/strong> Type 2 SPD must be installed in the main distribution board or on the input side of the UPS system. This location allows it to intercept switching surges and induced lightning transients before they reach sensitive loads.<\/p>\r\n<\/li>\r\n \t<li data-start=\"783\" data-end=\"894\">\r\n<p data-start=\"785\" data-end=\"894\"><strong data-start=\"785\" data-end=\"793\">Why:<\/strong> Installing the SPD too far downstream increases the residual surge voltage (Up) seen by equipment.<\/p>\r\n<\/li>\r\n \t<li data-start=\"895\" data-end=\"1226\">\r\n<p data-start=\"897\" data-end=\"917\"><strong data-start=\"897\" data-end=\"915\">Best Practice:<\/strong><\/p>\r\n\r\n<ul data-start=\"920\" data-end=\"1226\">\r\n \t<li data-start=\"920\" data-end=\"994\">\r\n<p data-start=\"922\" data-end=\"994\">Keep the total conductor length (phase \u2192 SPD \u2192 earth) \u2264 0.5 m.<\/p>\r\n<\/li>\r\n \t<li data-start=\"997\" data-end=\"1066\">\r\n<p data-start=\"999\" data-end=\"1066\">Place SPD modules as close as possible to the busbars (L, N, PE).<\/p>\r\n<\/li>\r\n \t<li data-start=\"1069\" data-end=\"1226\">\r\n<p data-start=\"1071\" data-end=\"1226\">If the distance between upstream Type 1 and this Type 2 SPD is &lt;10 m, add a decoupling inductor <strong data-start=\"1147\" data-end=\"1186\">(per <a href=\"https:\/\/webstore.iec.ch\/en\/publication\/1865\" target=\"_blank\" rel=\"noopener\">IEC 60364<\/a>)<\/strong> to ensure proper energy coordination.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"1233\" data-end=\"1295\"><strong data-start=\"1237\" data-end=\"1293\">Step 2 \u2013 Prepare the Distribution Board and DIN Rail<\/strong><\/h3>\r\n<ul data-start=\"1296\" data-end=\"1792\">\r\n \t<li data-start=\"1296\" data-end=\"1445\">\r\n<p data-start=\"1298\" data-end=\"1445\">Ensure the distribution board is fully de-energized. Verify with a multimeter or voltage detector on all incoming phases and neutral.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1446\" data-end=\"1529\">\r\n<p data-start=\"1448\" data-end=\"1529\">Check that the DIN rail is securely fastened, clean, and free of corrosion.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1530\" data-end=\"1617\">\r\n<p data-start=\"1532\" data-end=\"1617\">Leave adequate space around the SPD for ventilation and future maintenance.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1618\" data-end=\"1792\">\r\n<p data-start=\"1620\" data-end=\"1792\">Tip from field practice: Always mount modular SPDs vertically when possible. This supports natural heat dissipation and makes the indicator windows easier to inspect.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"1799\" data-end=\"1851\"><strong data-start=\"1803\" data-end=\"1849\">Step 3 \u2013 Connect the Conductors (L, N, PE)<\/strong><\/h3>\r\n<p data-start=\"1852\" data-end=\"1944\">Proper wiring is critical, as poor connections can completely compromise surge protection.<\/p>\r\n\r\n<ul data-start=\"1946\" data-end=\"2853\">\r\n \t<li data-start=\"1946\" data-end=\"2093\">\r\n<p data-start=\"1948\" data-end=\"1969\"><strong data-start=\"1948\" data-end=\"1967\">Conductor Size:<\/strong><\/p>\r\n\r\n<ul data-start=\"1972\" data-end=\"2093\">\r\n \t<li data-start=\"1972\" data-end=\"2032\">\r\n<p data-start=\"1974\" data-end=\"2032\">Type 2 SPD (residential\/commercial): \u2265 6 mm\u00b2 copper.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2035\" data-end=\"2093\">\r\n<p data-start=\"2037\" data-end=\"2093\">Type 1 SPD (at service entrance): \u2265 16 mm\u00b2 copper.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"2094\" data-end=\"2359\">\r\n<p data-start=\"2096\" data-end=\"2119\"><strong data-start=\"2096\" data-end=\"2117\">Connection Order:<\/strong><\/p>\r\n\r\n<ul data-start=\"2122\" data-end=\"2359\">\r\n \t<li data-start=\"2122\" data-end=\"2195\">\r\n<p data-start=\"2124\" data-end=\"2195\">Connect phase conductors (L1, L2, L3) to the SPD input terminals.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2198\" data-end=\"2266\">\r\n<p data-start=\"2200\" data-end=\"2266\">Connect neutral (N) if required by the SPD type (4P or 3+1).<\/p>\r\n<\/li>\r\n \t<li data-start=\"2269\" data-end=\"2359\">\r\n<p data-start=\"2271\" data-end=\"2359\">Connect earth (PE) directly to the earth bar with the shortest possible conductor.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"2360\" data-end=\"2519\">\r\n<p data-start=\"2362\" data-end=\"2519\"><strong data-start=\"2362\" data-end=\"2373\">Torque:<\/strong> Tighten terminals according to manufacturer datasheet (typically 2.5\u20133.5 Nm for 6 mm\u00b2 Cu). Loose terminals create heating and arcing risks.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2520\" data-end=\"2706\">\r\n<p data-start=\"2522\" data-end=\"2706\"><strong data-start=\"2522\" data-end=\"2549\">Why short leads matter:<\/strong> Every 10 cm of wire length adds approximately 1 kV of residual surge voltage. That means long or coiled leads can raise Up beyond equipment tolerance.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2707\" data-end=\"2853\">\r\n<p data-start=\"2709\" data-end=\"2853\"><strong data-start=\"2709\" data-end=\"2728\">Common mistake:<\/strong> Running the PE wire parallel to phase wires over long distances. This increases inductive coupling and weakens protection.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"2860\" data-end=\"2914\"><strong data-start=\"2864\" data-end=\"2912\">Step 4 \u2013 Add Backup Protection (Fuse or MCB)<\/strong><\/h3>\r\n<ul data-start=\"2915\" data-end=\"3599\">\r\n \t<li data-start=\"2915\" data-end=\"3148\">\r\n<p data-start=\"2917\" data-end=\"3148\"><strong data-start=\"2917\" data-end=\"2932\">Why needed:<\/strong> An SPD is connected in parallel to the system. If it fails due to severe surge exposure, it may short-circuit. A dedicated backup protective device ensures safe disconnection without tripping the main breaker.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3149\" data-end=\"3454\">\r\n<p data-start=\"3151\" data-end=\"3165\"><strong data-start=\"3151\" data-end=\"3163\">Options:<\/strong><\/p>\r\n\r\n<ul data-start=\"3168\" data-end=\"3454\">\r\n \t<li data-start=\"3168\" data-end=\"3294\">\r\n<p data-start=\"3170\" data-end=\"3294\">Standard SPD: Connect via MCB (20\u201332 A typical for residential) or fuse, rated according to the SPD\u2019s In and Imax.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3297\" data-end=\"3454\">\r\n<p data-start=\"3299\" data-end=\"3454\">Integrated solution: Use SPDs with built-in backup fuses (e.g., our BR-30FU series), which eliminates the need for an external protective device.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"3455\" data-end=\"3599\">\r\n<p data-start=\"3457\" data-end=\"3599\">Standards: IEC 61643 and BS 7671 both recommend selective coordination between SPD and upstream breakers to avoid nuisance tripping.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"3606\" data-end=\"3659\"><strong data-start=\"3610\" data-end=\"3657\">Step 5 \u2013 Ensure Proper Earthing and Bonding<\/strong><\/h3>\r\n<ul data-start=\"3660\" data-end=\"4261\">\r\n \t<li data-start=\"3660\" data-end=\"3799\">\r\n<p data-start=\"3662\" data-end=\"3799\"><strong data-start=\"3662\" data-end=\"3687\">Direct Path to Earth:<\/strong> The SPD\u2019s earth terminal must be bonded directly to the PE bar. Do not daisy-chain through other devices.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3800\" data-end=\"3957\">\r\n<p data-start=\"3802\" data-end=\"3957\"><strong data-start=\"3802\" data-end=\"3823\">Earth Resistance:<\/strong> According to IEC 60364, grounding resistance should generally be \u226410 \u03a9, with \u22641 \u03a9 preferred in data centers and telecom facilities.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3958\" data-end=\"4128\">\r\n<p data-start=\"3960\" data-end=\"4128\"><strong data-start=\"3960\" data-end=\"3986\">Equipotential Bonding:<\/strong> Make sure all metal enclosures and cable shields are bonded at the same potential to prevent dangerous potential differences during surges.<\/p>\r\n<\/li>\r\n \t<li data-start=\"4129\" data-end=\"4261\">\r\n<p data-start=\"4131\" data-end=\"4261\"><strong data-start=\"4131\" data-end=\"4139\">Tip:<\/strong> Use flat conductors or braided copper when possible for PE, as they have lower inductance compared to round conductors.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"4268\" data-end=\"4312\"><strong data-start=\"4272\" data-end=\"4310\">Step 6 \u2013 Commissioning and Testing<\/strong><\/h3>\r\n<p data-start=\"4313\" data-end=\"4383\">Before re-energizing the system, verify the installation thoroughly:<\/p>\r\n\r\n<ol data-start=\"4385\" data-end=\"5166\">\r\n \t<li data-start=\"4385\" data-end=\"4561\">\r\n<p data-start=\"4388\" data-end=\"4412\"><strong data-start=\"4388\" data-end=\"4410\">Visual Inspection:<\/strong><\/p>\r\n\r\n<ul data-start=\"4416\" data-end=\"4561\">\r\n \t<li data-start=\"4416\" data-end=\"4465\">\r\n<p data-start=\"4418\" data-end=\"4465\">Confirm all connections are correct (L\/N\/PE).<\/p>\r\n<\/li>\r\n \t<li data-start=\"4469\" data-end=\"4523\">\r\n<p data-start=\"4471\" data-end=\"4523\">Verify conductor lengths are as short as possible.<\/p>\r\n<\/li>\r\n \t<li data-start=\"4527\" data-end=\"4561\">\r\n<p data-start=\"4529\" data-end=\"4561\">Check torque on each terminal.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"4562\" data-end=\"4682\">\r\n<p data-start=\"4565\" data-end=\"4587\"><strong data-start=\"4565\" data-end=\"4585\">Insulation Test:<\/strong><\/p>\r\n\r\n<ul data-start=\"4591\" data-end=\"4682\">\r\n \t<li data-start=\"4591\" data-end=\"4682\">\r\n<p data-start=\"4593\" data-end=\"4682\">Perform insulation resistance tests between L\u2013N, L\u2013PE, N\u2013PE to ensure wiring integrity.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"4683\" data-end=\"4869\">\r\n<p data-start=\"4686\" data-end=\"4707\"><strong data-start=\"4686\" data-end=\"4705\">Power-Up Check:<\/strong><\/p>\r\n\r\n<ul data-start=\"4711\" data-end=\"4869\">\r\n \t<li data-start=\"4711\" data-end=\"4869\">\r\n<p data-start=\"4713\" data-end=\"4786\">Switch on power and observe the status indicator window on the SPD:<\/p>\r\n\r\n<ul data-start=\"4792\" data-end=\"4869\">\r\n \t<li data-start=\"4792\" data-end=\"4815\">\r\n<p data-start=\"4794\" data-end=\"4815\">Green = operational<\/p>\r\n<\/li>\r\n \t<li data-start=\"4821\" data-end=\"4869\">\r\n<p data-start=\"4823\" data-end=\"4869\">Red = module has failed and must be replaced<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"4870\" data-end=\"5003\">\r\n<p data-start=\"4873\" data-end=\"4916\"><strong data-start=\"4873\" data-end=\"4914\">Remote Signaling Test (if available):<\/strong><\/p>\r\n\r\n<ul data-start=\"4920\" data-end=\"5003\">\r\n \t<li data-start=\"4920\" data-end=\"5003\">\r\n<p data-start=\"4922\" data-end=\"5003\">For SPDs with remote contacts, verify alarm integration with BMS\/SCADA systems.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"5004\" data-end=\"5166\">\r\n<p data-start=\"5007\" data-end=\"5027\"><strong data-start=\"5007\" data-end=\"5025\">Documentation:<\/strong><\/p>\r\n\r\n<ul data-start=\"5031\" data-end=\"5166\">\r\n \t<li data-start=\"5031\" data-end=\"5166\">\r\n<p data-start=\"5033\" data-end=\"5166\">Record SPD type, model number, rated parameters (Uc, In, Imax, Up), installation date, and circuit location for future maintenance.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n<\/ol>\r\n<p data-start=\"5173\" data-end=\"5607\"><strong data-start=\"5175\" data-end=\"5222\">Featured Snippet Candidate (Summary Style):<\/strong><br data-start=\"5222\" data-end=\"5225\" \/><em data-start=\"5225\" data-end=\"5605\">To install a Type 2 surge protector, disconnect power and mount it on the DIN rail inside the distribution board. Connect L\/N\/PE conductors using \u22656 mm\u00b2 copper with \u22640.5 m total length, add a backup fuse or MCB, and ensure direct earthing to the PE bar. After tightening to the correct torque, perform insulation tests, check the status indicator, and document the installation.<\/em><\/p>\r\n<img class=\"alignnone size-medium wp-image-2236\" src=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2025\/08\/How-to-Install-Type-2-Surge-Protector.jpg\" alt=\"How to Install Type 2 Surge Protector\" width=\"1000\" \/>\r\n\r\n&nbsp;\r\n<h2 data-start=\"321\" data-end=\"356\">Wiring Diagrams for Type 2 SPD<\/h2>\r\n<h3 data-start=\"358\" data-end=\"404\"><strong data-start=\"362\" data-end=\"402\">Single-Phase System (230 V, TN-S\/TT)<\/strong><\/h3>\r\n<ul data-start=\"405\" data-end=\"1033\">\r\n \t<li data-start=\"405\" data-end=\"634\">\r\n<p data-start=\"407\" data-end=\"427\"><strong data-start=\"407\" data-end=\"425\">Configuration:<\/strong><\/p>\r\n\r\n<ul data-start=\"430\" data-end=\"634\">\r\n \t<li data-start=\"430\" data-end=\"496\">\r\n<p data-start=\"432\" data-end=\"496\">Connect the SPD between L and N, and between N and PE.<\/p>\r\n<\/li>\r\n \t<li data-start=\"499\" data-end=\"634\">\r\n<p data-start=\"501\" data-end=\"634\">For TT systems, ensure the N-PE protection path uses a spark gap or a MOV+GDT combination to avoid continuous leakage currents.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"635\" data-end=\"851\">\r\n<p data-start=\"637\" data-end=\"661\"><strong data-start=\"637\" data-end=\"659\">Backup Protection:<\/strong><\/p>\r\n\r\n<ul data-start=\"664\" data-end=\"851\">\r\n \t<li data-start=\"664\" data-end=\"768\">\r\n<p data-start=\"666\" data-end=\"768\">A dedicated fuse or MCB must be installed on the phase conductor (L) feeding the SPD branch.<\/p>\r\n<\/li>\r\n \t<li data-start=\"771\" data-end=\"851\">\r\n<p data-start=\"773\" data-end=\"851\">Typical residential setup: 20\u201332 A MCB rated according to SPD\u2019s In\/Imax.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"852\" data-end=\"1033\">\r\n<p data-start=\"854\" data-end=\"1033\"><strong data-start=\"854\" data-end=\"873\">Why it matters:<\/strong> Without proper backup protection, an SPD failure may cause a permanent short circuit, tripping the main breaker and cutting power to the entire installation.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"1040\" data-end=\"1082\"><strong data-start=\"1044\" data-end=\"1080\">Three-Phase System (400 V, TN-S)<\/strong><\/h3>\r\n<ul data-start=\"1083\" data-end=\"1836\">\r\n \t<li data-start=\"1083\" data-end=\"1297\">\r\n<p data-start=\"1085\" data-end=\"1105\"><strong data-start=\"1085\" data-end=\"1103\">Configuration:<\/strong><\/p>\r\n\r\n<ul data-start=\"1108\" data-end=\"1297\">\r\n \t<li data-start=\"1108\" data-end=\"1163\">\r\n<p data-start=\"1110\" data-end=\"1163\">SPD connected across L1-PE, L2-PE, L3-PE, N-PE.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1166\" data-end=\"1297\">\r\n<p data-start=\"1168\" data-end=\"1297\">Recommended 3+1 configuration: MOVs across each phase to neutral (L1-N, L2-N, L3-N), plus a spark gap between N and PE.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"1298\" data-end=\"1492\">\r\n<p data-start=\"1300\" data-end=\"1338\"><strong data-start=\"1300\" data-end=\"1336\">Advantages of 3+1 configuration:<\/strong><\/p>\r\n\r\n<ul data-start=\"1341\" data-end=\"1492\">\r\n \t<li data-start=\"1341\" data-end=\"1396\">\r\n<p data-start=\"1343\" data-end=\"1396\">Reduces residual voltage between neutral and earth.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1399\" data-end=\"1492\">\r\n<p data-start=\"1401\" data-end=\"1492\">Provides better coordination in TT and TN-S systems where neutral displacement can occur.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"1493\" data-end=\"1620\">\r\n<p data-start=\"1495\" data-end=\"1519\"><strong data-start=\"1495\" data-end=\"1517\">Backup Protection:<\/strong><\/p>\r\n\r\n<ul data-start=\"1522\" data-end=\"1620\">\r\n \t<li data-start=\"1522\" data-end=\"1620\">\r\n<p data-start=\"1524\" data-end=\"1620\">Typically, 32\u201363 A MCBs are required for each SPD branch in industrial\/commercial systems.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"1621\" data-end=\"1836\">\r\n<p data-start=\"1623\" data-end=\"1836\"><strong data-start=\"1623\" data-end=\"1644\">Professional tip:<\/strong> When protecting three-phase UPS or motor loads, always verify short-circuit current rating (Isc) of the SPD matches the fault level at the distribution point (IEC 61643-11 requirement).<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"1843\" data-end=\"1899\"><strong data-start=\"1847\" data-end=\"1897\">UPS Integration (Uninterruptible Power Supply)<\/strong><\/h3>\r\n<ul data-start=\"1900\" data-end=\"2715\">\r\n \t<li data-start=\"1900\" data-end=\"2067\">\r\n<p data-start=\"1902\" data-end=\"2067\"><strong data-start=\"1902\" data-end=\"1916\">Placement:<\/strong> Install the Type 2 SPD upstream of the UPS rectifier. This ensures surges from the utility grid are clamped before reaching the UPS electronics.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2068\" data-end=\"2341\">\r\n<p data-start=\"2070\" data-end=\"2105\"><strong data-start=\"2070\" data-end=\"2103\">Why upstream, not downstream:<\/strong><\/p>\r\n\r\n<ul data-start=\"2108\" data-end=\"2341\">\r\n \t<li data-start=\"2108\" data-end=\"2238\">\r\n<p data-start=\"2110\" data-end=\"2238\">Downstream installation may cause nuisance tripping, since UPS inverters can generate harmonics and fast switching transients.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2241\" data-end=\"2341\">\r\n<p data-start=\"2243\" data-end=\"2341\">Upstream placement protects rectifiers, DC capacitors, and inverter modules, extending UPS life.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"2342\" data-end=\"2544\">\r\n<p data-start=\"2344\" data-end=\"2376\"><strong data-start=\"2344\" data-end=\"2374\">Example with our products:<\/strong><\/p>\r\n\r\n<ul data-start=\"2379\" data-end=\"2544\">\r\n \t<li data-start=\"2379\" data-end=\"2544\">\r\n<p data-start=\"2381\" data-end=\"2544\">SLP40-275\/3S+1 upstream of a double-conversion UPS ensures surge currents up to 40 kA are safely diverted, preventing stress on inverter IGBTs and batteries.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"2545\" data-end=\"2715\">\r\n<p data-start=\"2547\" data-end=\"2715\"><strong data-start=\"2547\" data-end=\"2568\">Engineering note:<\/strong> In critical IT or healthcare facilities, consider combining Type 1 + Type 2 cascade at UPS input for lightning + switching surge protection.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h2 data-start=\"2722\" data-end=\"2751\">Common Mistakes to Avoid<\/h2>\r\n<h3 data-start=\"2753\" data-end=\"2781\"><strong data-start=\"2757\" data-end=\"2779\">1. Wiring Too Long<\/strong><\/h3>\r\n<ul data-start=\"2782\" data-end=\"3103\">\r\n \t<li data-start=\"2782\" data-end=\"2848\">\r\n<p data-start=\"2784\" data-end=\"2848\"><strong data-start=\"2784\" data-end=\"2796\">Mistake:<\/strong> SPD connected with &gt;0.5 m total conductor length.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2849\" data-end=\"2990\">\r\n<p data-start=\"2851\" data-end=\"2990\"><strong data-start=\"2851\" data-end=\"2865\">Why wrong:<\/strong> Each 10 cm adds ~1 kV to the residual voltage (Up). Sensitive electronics (rated 1.5 kV withstand) may still be destroyed.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2991\" data-end=\"3103\">\r\n<p data-start=\"2993\" data-end=\"3103\"><strong data-start=\"2993\" data-end=\"3011\">Best practice:<\/strong> Keep SPD as close as possible to busbars; use straight runs, avoid loops and sharp bends.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"3105\" data-end=\"3138\"><strong data-start=\"3109\" data-end=\"3136\">2. Wrong Conductor Size<\/strong><\/h3>\r\n<ul data-start=\"3139\" data-end=\"3454\">\r\n \t<li data-start=\"3139\" data-end=\"3194\">\r\n<p data-start=\"3141\" data-end=\"3194\"><strong data-start=\"3141\" data-end=\"3153\">Mistake:<\/strong> Using wires &lt;6 mm\u00b2 Cu for Type 2 SPDs.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3195\" data-end=\"3284\">\r\n<p data-start=\"3197\" data-end=\"3284\"><strong data-start=\"3197\" data-end=\"3213\">Consequence:<\/strong> Excessive heating, risk of insulation breakdown during large surges.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3285\" data-end=\"3454\">\r\n<p data-start=\"3287\" data-end=\"3307\"><strong data-start=\"3287\" data-end=\"3305\">Best practice:<\/strong><\/p>\r\n\r\n<ul data-start=\"3310\" data-end=\"3454\">\r\n \t<li data-start=\"3310\" data-end=\"3349\">\r\n<p data-start=\"3312\" data-end=\"3349\">Type 2 SPD \u2192 \u22656 mm\u00b2 Cu (IEC 60364).<\/p>\r\n<\/li>\r\n \t<li data-start=\"3352\" data-end=\"3380\">\r\n<p data-start=\"3354\" data-end=\"3380\">Type 1 SPD \u2192 \u226516 mm\u00b2 Cu.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3383\" data-end=\"3454\">\r\n<p data-start=\"3385\" data-end=\"3454\">Use low-inductance conductors (braided or flat copper if possible).<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"3456\" data-end=\"3489\"><strong data-start=\"3460\" data-end=\"3487\">3. No Backup Protection<\/strong><\/h3>\r\n<ul data-start=\"3490\" data-end=\"3839\">\r\n \t<li data-start=\"3490\" data-end=\"3548\">\r\n<p data-start=\"3492\" data-end=\"3548\"><strong data-start=\"3492\" data-end=\"3504\">Mistake:<\/strong> Directly connecting SPD without MCB\/fuse.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3549\" data-end=\"3669\">\r\n<p data-start=\"3551\" data-end=\"3669\"><strong data-start=\"3551\" data-end=\"3567\">Consequence:<\/strong> If SPD fails in short-circuit mode, it can trip the main breaker, shutting down the whole facility.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3670\" data-end=\"3839\">\r\n<p data-start=\"3672\" data-end=\"3692\"><strong data-start=\"3672\" data-end=\"3690\">Best practice:<\/strong><\/p>\r\n\r\n<ul data-start=\"3695\" data-end=\"3839\">\r\n \t<li data-start=\"3695\" data-end=\"3739\">\r\n<p data-start=\"3697\" data-end=\"3739\">Always install a dedicated breaker\/fuse.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3742\" data-end=\"3839\">\r\n<p data-start=\"3744\" data-end=\"3839\">Use SPD models with built-in fuses (e.g. our BR-30FU series) for simplified installation.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"3841\" data-end=\"3867\"><strong data-start=\"3845\" data-end=\"3865\">4. Poor Earthing<\/strong><\/h3>\r\n<ul data-start=\"3868\" data-end=\"4281\">\r\n \t<li data-start=\"3868\" data-end=\"3963\">\r\n<p data-start=\"3870\" data-end=\"3963\"><strong data-start=\"3870\" data-end=\"3882\">Mistake:<\/strong> High resistance ground (&gt;30 \u03a9) or long parallel routing with phase conductors.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3964\" data-end=\"4080\">\r\n<p data-start=\"3966\" data-end=\"4080\"><strong data-start=\"3966\" data-end=\"3982\">Consequence:<\/strong> Surge current cannot be safely discharged, raising touch voltages and risking equipment\/people.<\/p>\r\n<\/li>\r\n \t<li data-start=\"4081\" data-end=\"4281\">\r\n<p data-start=\"4083\" data-end=\"4103\"><strong data-start=\"4083\" data-end=\"4101\">Best practice:<\/strong><\/p>\r\n\r\n<ul data-start=\"4106\" data-end=\"4281\">\r\n \t<li data-start=\"4106\" data-end=\"4157\">\r\n<p data-start=\"4108\" data-end=\"4157\">Ensure ground resistance \u226410 \u03a9 (IEC 60364).<\/p>\r\n<\/li>\r\n \t<li data-start=\"4160\" data-end=\"4204\">\r\n<p data-start=\"4162\" data-end=\"4204\">In data centers\/hospitals, aim for \u22641 \u03a9.<\/p>\r\n<\/li>\r\n \t<li data-start=\"4207\" data-end=\"4281\">\r\n<p data-start=\"4209\" data-end=\"4281\">Connect SPD earth terminal directly to PE bar with shortest conductor.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"4283\" data-end=\"4317\"><strong data-start=\"4287\" data-end=\"4315\">5. Ignoring Coordination<\/strong><\/h3>\r\n<ul data-start=\"4318\" data-end=\"4707\">\r\n \t<li data-start=\"4318\" data-end=\"4436\">\r\n<p data-start=\"4320\" data-end=\"4436\"><strong data-start=\"4320\" data-end=\"4332\">Mistake:<\/strong> Installing only Type 2 SPDs without Type 1 (for direct lightning) or Type 3 (for terminal equipment).<\/p>\r\n<\/li>\r\n \t<li data-start=\"4437\" data-end=\"4548\">\r\n<p data-start=\"4439\" data-end=\"4548\"><strong data-start=\"4439\" data-end=\"4455\">Consequence:<\/strong> Type 2 alone cannot absorb high-energy lightning currents or protect delicate end devices.<\/p>\r\n<\/li>\r\n \t<li data-start=\"4549\" data-end=\"4707\">\r\n<p data-start=\"4551\" data-end=\"4707\"><strong data-start=\"4551\" data-end=\"4569\">Best practice:<\/strong> Follow the cascade principle (Type 1 + Type 2 + Type 3), ensuring coordination distance \u226510 m or use decoupling inductors if &lt;10 m.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h2 data-start=\"4714\" data-end=\"4745\">Maintenance and Monitoring<\/h2>\r\n<p data-start=\"4747\" data-end=\"4838\">A surge protector is not \u201cinstall and forget.\u201d Continuous monitoring ensures reliability.<\/p>\r\n\r\n<h3 data-start=\"4840\" data-end=\"4866\"><strong data-start=\"4844\" data-end=\"4864\">1. Visual Checks<\/strong><\/h3>\r\n<ul data-start=\"4867\" data-end=\"4999\">\r\n \t<li data-start=\"4867\" data-end=\"4945\">\r\n<p data-start=\"4869\" data-end=\"4945\">Most SPDs feature a status window (green = operational, red = failed).<\/p>\r\n<\/li>\r\n \t<li data-start=\"4946\" data-end=\"4999\">\r\n<p data-start=\"4948\" data-end=\"4999\">Inspect monthly, or after known lightning events.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"5001\" data-end=\"5043\"><strong data-start=\"5005\" data-end=\"5041\">2. Remote Monitoring (BMS\/SCADA)<\/strong><\/h3>\r\n<ul data-start=\"5044\" data-end=\"5266\">\r\n \t<li data-start=\"5044\" data-end=\"5149\">\r\n<p data-start=\"5046\" data-end=\"5149\">SPDs with remote signaling contacts (NO\/NC) can be wired into a building management system (BMS).<\/p>\r\n<\/li>\r\n \t<li data-start=\"5150\" data-end=\"5266\">\r\n<p data-start=\"5152\" data-end=\"5266\">This allows facility managers to get alarms if an SPD has failed, even if the panel is not physically inspected.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"5268\" data-end=\"5295\"><strong data-start=\"5272\" data-end=\"5293\">3. Event Counting<\/strong><\/h3>\r\n<ul data-start=\"5296\" data-end=\"5491\">\r\n \t<li data-start=\"5296\" data-end=\"5360\">\r\n<p data-start=\"5298\" data-end=\"5360\">Use surge counters like BRSC-01 to log each surge event.<\/p>\r\n<\/li>\r\n \t<li data-start=\"5361\" data-end=\"5491\">\r\n<p data-start=\"5363\" data-end=\"5491\">Records help in predictive maintenance\u2014if an SPD has handled multiple high-energy events, plan for replacement before failure.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"5493\" data-end=\"5517\"><strong data-start=\"5497\" data-end=\"5515\">4. Replacement<\/strong><\/h3>\r\n<ul data-start=\"5518\" data-end=\"5670\">\r\n \t<li data-start=\"5518\" data-end=\"5597\">\r\n<p data-start=\"5520\" data-end=\"5597\">Modular SPDs (like our SLP and BR series) are plug-in\/plug-out designs.<\/p>\r\n<\/li>\r\n \t<li data-start=\"5598\" data-end=\"5670\">\r\n<p data-start=\"5600\" data-end=\"5670\">Replace the cartridge without rewiring the base\u2014minimizing downtime.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"5672\" data-end=\"5699\"><strong data-start=\"5676\" data-end=\"5697\">5. Annual Testing<\/strong><\/h3>\r\n<ul data-start=\"5700\" data-end=\"5904\">\r\n \t<li data-start=\"5700\" data-end=\"5758\">\r\n<p data-start=\"5702\" data-end=\"5758\">Perform insulation resistance test between conductors.<\/p>\r\n<\/li>\r\n \t<li data-start=\"5759\" data-end=\"5834\">\r\n<p data-start=\"5761\" data-end=\"5834\">Measure earth resistance annually (target \u226410 \u03a9 or per local code).<\/p>\r\n<\/li>\r\n \t<li data-start=\"5835\" data-end=\"5904\">\r\n<p data-start=\"5837\" data-end=\"5904\">Document test results for compliance audits and warranty records.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h2 data-start=\"8172\" data-end=\"8187\">Conclusion<\/h2>\r\n<p data-start=\"8188\" data-end=\"8449\">Installing a Type 2 surge protector is not complicated, but it must be done correctly. By following proper installation rules\u2014short wiring, correct conductor size, reliable earthing, and backup protection\u2014you ensure that your SPD performs exactly as designed.<\/p>\r\n<p data-start=\"8451\" data-end=\"8610\">A UPS alone is not enough to protect sensitive systems. Pairing it with a properly installed Type 2 SPD provides the resilience modern facilities demand.<\/p>\r\n<p data-start=\"8612\" data-end=\"8947\">Our company\u2019s SLP40-275\/3S+1 and BR-30FU series SPDs are designed for easy DIN-rail installation, built-in safety features, and compliance with IEC 61643 standards. Whether you\u2019re protecting a residential board, a commercial office, or an industrial UPS system, these solutions ensure long-term reliability and peace of mind.<\/p>"},"_links":{"self":[{"href":"https:\/\/www.britecelectric.com\/it\/wp-json\/wp\/v2\/blog\/2171","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.britecelectric.com\/it\/wp-json\/wp\/v2\/blog"}],"about":[{"href":"https:\/\/www.britecelectric.com\/it\/wp-json\/wp\/v2\/types\/blog"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.britecelectric.com\/it\/wp-json\/wp\/v2\/media\/2158"}],"wp:attachment":[{"href":"https:\/\/www.britecelectric.com\/it\/wp-json\/wp\/v2\/media?parent=2171"}],"wp:term":[{"taxonomy":"blog_category","embeddable":true,"href":"https:\/\/www.britecelectric.com\/it\/wp-json\/wp\/v2\/blog_category?post=2171"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}