{"id":784,"date":"2023-12-19T15:48:41","date_gmt":"2023-12-19T07:48:41","guid":{"rendered":"https:\/\/www.britecelectric.com\/?post_type=blog&#038;p=784"},"modified":"2025-05-26T14:38:24","modified_gmt":"2025-05-26T06:38:24","slug":"classification-of-spds","status":"publish","type":"blog","link":"https:\/\/www.britecelectric.com\/pl\/blog\/classification-of-spds\/","title":{"rendered":"Klasyfikacja SPD"},"content":{"rendered":"Urz\u0105dzenie przeciwprzepi\u0119ciowe (SPD) chroni systemy elektryczne i sprz\u0119t przed przepi\u0119ciami, ograniczaj\u0105c napi\u0119cia przej\u015bciowe i przekierowuj\u0105c pr\u0105dy udarowe.\r\n<h2><strong>Wa\u017cne parametry techniczne SPD:<\/strong><\/h2>\r\n<ul data-start=\"517\" data-end=\"826\">\r\n \t<li data-start=\"517\" data-end=\"566\">\r\n<p data-start=\"519\" data-end=\"566\">Maksymalne ci\u0105g\u0142e napi\u0119cie robocze (Uc)<\/p>\r\n<\/li>\r\n \t<li data-start=\"567\" data-end=\"607\">\r\n<p data-start=\"569\" data-end=\"607\">Pr\u0105d udarowy piorunowy (Iimp)<\/p>\r\n<\/li>\r\n \t<li data-start=\"608\" data-end=\"646\">\r\n<p data-start=\"610\" data-end=\"646\">Nominalny pr\u0105d roz\u0142adowania (I)<\/p>\r\n<\/li>\r\n \t<li data-start=\"647\" data-end=\"684\">\r\n<p data-start=\"649\" data-end=\"684\">Poziom ochrony napi\u0119cia (w g\u00f3r\u0119)<\/p>\r\n<\/li>\r\n \t<li data-start=\"685\" data-end=\"735\">\r\n<p data-start=\"687\" data-end=\"735\">Wytrzyma\u0142o\u015b\u0107 zwarciowa (Iscr)<\/p>\r\n<\/li>\r\n \t<li data-start=\"736\" data-end=\"792\">\r\n<p data-start=\"738\" data-end=\"792\">Mo\u017cliwo\u015b\u0107 przerwania swobodnego w Uc (Ifi)<\/p>\r\n<\/li>\r\n \t<li data-start=\"793\" data-end=\"826\">\r\n<p data-start=\"795\" data-end=\"826\">Przej\u015bciowe przepi\u0119cie (TOV)<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"828\" data-end=\"1016\">Parametry te okre\u015blaj\u0105 dzia\u0142anie SPD w r\u00f3\u017cnych warunkach awaryjnych i musz\u0105 by\u0107 starannie dobrane do napi\u0119cia systemu, punktu instalacji i spodziewanego \u015brodowiska przepi\u0119ciowego.<\/p>\r\n\r\n<h2><strong>Kategorie lub typy SPD<\/strong><\/h2>\r\n<p data-start=\"1055\" data-end=\"1156\">SPD s\u0105 og\u00f3lnie klasyfikowane w oparciu o wewn\u0119trzne zasady dzia\u0142ania i standardowe metody testowania.<\/p>\r\n\r\n<h3 data-start=\"1158\" data-end=\"1187\"><strong data-start=\"1162\" data-end=\"1187\">Wed\u0142ug zachowania komponentu<\/strong><\/h3>\r\n<p data-start=\"1189\" data-end=\"1220\">Dwa g\u0142\u00f3wne typy SPD to:<\/p>\r\n\r\n<ul data-start=\"1222\" data-end=\"1292\">\r\n \t<li data-start=\"1222\" data-end=\"1257\">\r\n<p data-start=\"1224\" data-end=\"1257\">Elementy ograniczaj\u0105ce napi\u0119cie<\/p>\r\n<\/li>\r\n \t<li data-start=\"1258\" data-end=\"1292\">\r\n<p data-start=\"1260\" data-end=\"1292\">Elementy prze\u0142\u0105czaj\u0105ce napi\u0119cie<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"1294\" data-end=\"1417\">Wi\u0119kszo\u015b\u0107 nowoczesnych SPD zawiera oba typy komponent\u00f3w, aby po\u0142\u0105czy\u0107 zalety ka\u017cdego z nich i zmniejszy\u0107 ich s\u0142abe strony.<\/p>\r\n<p data-start=\"1419\" data-end=\"1461\">Elementy ograniczaj\u0105ce napi\u0119cie obejmuj\u0105:<\/p>\r\n\r\n<ul data-start=\"1462\" data-end=\"1539\">\r\n \t<li data-start=\"1462\" data-end=\"1494\">\r\n<p data-start=\"1464\" data-end=\"1494\">Warystory tlenku metalu (MOV)<\/p>\r\n<\/li>\r\n \t<li data-start=\"1495\" data-end=\"1539\">\r\n<p data-start=\"1497\" data-end=\"1539\">Diody t\u0142umi\u0105ce napi\u0119cie przej\u015bciowe (TVS).<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"1541\" data-end=\"1584\">Elementy prze\u0142\u0105czaj\u0105ce napi\u0119cie obejmuj\u0105:<\/p>\r\n\r\n<ul data-start=\"1585\" data-end=\"1628\">\r\n \t<li data-start=\"1585\" data-end=\"1615\">\r\n<p data-start=\"1587\" data-end=\"1615\">Rury wy\u0142adowcze gazu (GDT)<\/p>\r\n<\/li>\r\n \t<li data-start=\"1616\" data-end=\"1628\">\r\n<p data-start=\"1618\" data-end=\"1628\">Przerwy iskrowe<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"1630\" data-end=\"1725\">Komponenty te r\u00f3\u017cni\u0105 si\u0119 szybko\u015bci\u0105 reakcji, zdolno\u015bci\u0105 przenoszenia energii i charakterystyk\u0105 starzenia.<\/p>\r\n<img class=\"size-full wp-image-17918 aligncenter\" src=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/12\/26.png\" sizes=\"(max-width: 570px) 100vw, 570px\" srcset=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/12\/26.png 570w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/12\/26-400x247.png 400w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/12\/26-150x93.png 150w\" alt=\"\" width=\"570\" height=\"352\" \/>\r\n<h2 data-start=\"1732\" data-end=\"1770\"><strong data-start=\"1735\" data-end=\"1770\">Klasyfikacja SPD wed\u0142ug norm<\/strong><\/h2>\r\n<p data-start=\"1772\" data-end=\"1941\">Zgodnie z ANSI\/IEEE C62.41, IEC 61643-11 i klasyfikacj\u0105 VDE, istniej\u0105 trzy standardowe typy SPD w oparciu o przetestowany kszta\u0142t fali i poziom aplikacji.<\/p>\r\n\r\n<h3 data-start=\"1943\" data-end=\"1961\"><strong data-start=\"1947\" data-end=\"1961\">SPD typu 1<\/strong><\/h3>\r\n<a href=\"https:\/\/www.britecelectric.com\/pl\/product\/brpv3-1000-12-5vg-1000v-12-5ka-type-12-pv-class-i-class-ii-spd\/\" rel=\"attachment wp-att-2104\"><img class=\"alignnone wp-image-2104\" src=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/12\/PV-Power-Surge-Protection-1024x1024.webp\" alt=\"Urz\u0105dzenie przeciwprzepi\u0119ciowe typu 1\" width=\"742\" height=\"742\" \/><\/a>\r\n<ul data-start=\"1963\" data-end=\"2210\">\r\n \t<li data-start=\"1963\" data-end=\"2035\">\r\n<p data-start=\"1965\" data-end=\"2035\">Testowany impulsowym pr\u0105dem wy\u0142adowczym Iimp (zwykle 10\/350 \u00b5s)<\/p>\r\n<\/li>\r\n \t<li data-start=\"2036\" data-end=\"2085\">\r\n<p data-start=\"2038\" data-end=\"2085\">Testowany r\u00f3wnie\u017c z impulsami pr\u0105dowymi 8\/20 \u00b5s<\/p>\r\n<\/li>\r\n \t<li data-start=\"2086\" data-end=\"2139\">\r\n<p data-start=\"2088\" data-end=\"2139\">Przeznaczony do monta\u017cu przy wej\u015bciu serwisowym<\/p>\r\n<\/li>\r\n \t<li data-start=\"2140\" data-end=\"2210\">\r\n<p data-start=\"2142\" data-end=\"2210\">Chroni przed bezpo\u015brednim pr\u0105dem piorunowym i przepi\u0119ciami o du\u017cej energii<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"2212\" data-end=\"2230\"><strong data-start=\"2216\" data-end=\"2230\">SPD typu 2<\/strong><\/h3>\r\n<ul data-start=\"2232\" data-end=\"2651\">\r\n \t<li data-start=\"2232\" data-end=\"2290\">\r\n<p data-start=\"2234\" data-end=\"2290\">Testowane przy nominalnym pr\u0105dzie wy\u0142adowczym w (8\/20 \u00b5s)<\/p>\r\n<\/li>\r\n \t<li data-start=\"2291\" data-end=\"2362\">\r\n<p data-start=\"2293\" data-end=\"2362\">Opcjonalnie testowany maksymalnym pr\u0105dem wy\u0142adowczym Imax (8\/20 \u00b5s)<\/p>\r\n<\/li>\r\n \t<li data-start=\"2363\" data-end=\"2429\">\r\n<p data-start=\"2365\" data-end=\"2429\">Uwaga: Imax nie jest zalecane jako podstawa wyboru SPD<\/p>\r\n<\/li>\r\n \t<li data-start=\"2430\" data-end=\"2525\">\r\n<p data-start=\"2432\" data-end=\"2525\">Do SPD z elementami prze\u0142\u0105czaj\u0105cymi napi\u0119cie, testowane r\u00f3wnie\u017c z impulsami napi\u0119ciowymi 1,2\/50 \u00b5s.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2526\" data-end=\"2586\">\r\n<p data-start=\"2528\" data-end=\"2586\">Instalowany na podrozdzielniach lub wej\u015bciach urz\u0105dze\u0144<\/p>\r\n<\/li>\r\n \t<li data-start=\"2587\" data-end=\"2651\">\r\n<p data-start=\"2589\" data-end=\"2651\">Chroni przed przepi\u0119ciami \u0142\u0105czeniowymi i piorunami po\u015brednimi<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"2653\" data-end=\"2671\"><strong data-start=\"2657\" data-end=\"2671\">SPD typu 3<\/strong><\/h3>\r\n<ul data-start=\"2673\" data-end=\"2913\">\r\n \t<li data-start=\"2673\" data-end=\"2843\">\r\n<p data-start=\"2675\" data-end=\"2722\">Testowane z kombinowanym generatorem fal:<\/p>\r\n\r\n<ul data-start=\"2725\" data-end=\"2843\">\r\n \t<li data-start=\"2725\" data-end=\"2765\">\r\n<p data-start=\"2727\" data-end=\"2765\">Napi\u0119cie obwodu otwartego Uoc (1,2\/50 \u00b5s)<\/p>\r\n<\/li>\r\n \t<li data-start=\"2768\" data-end=\"2807\">\r\n<p data-start=\"2770\" data-end=\"2807\">Pr\u0105d zwarciowy Icw (8\/20 \u00b5s)<\/p>\r\n<\/li>\r\n \t<li data-start=\"2810\" data-end=\"2843\">\r\n<p data-start=\"2812\" data-end=\"2843\">Nominalna impedancja wyj\u015bciowa: 2 \u03a9<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"2844\" data-end=\"2913\">\r\n<p data-start=\"2846\" data-end=\"2913\">Zainstalowany w pobli\u017cu wra\u017cliwych urz\u0105dze\u0144 ko\u0144cowych w celu zapewnienia doskona\u0142ej ochrony<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h2 data-start=\"2920\" data-end=\"2960\"><strong data-start=\"2923\" data-end=\"2960\">Zastosowania SPD w systemach elektroenergetycznych<\/strong><\/h2>\r\n<p data-start=\"2962\" data-end=\"3069\">Urz\u0105dzenia SPD s\u0105 stosowane w szerokiej gamie system\u00f3w pr\u0105du przemiennego i sta\u0142ego, z kt\u00f3rych ka\u017cdy ma specyficzne wymagania dotycz\u0105ce projektu i doboru.<\/p>\r\n\r\n<h3 data-start=\"3071\" data-end=\"3110\"><strong data-start=\"3075\" data-end=\"3110\">1. Zastosowania system\u00f3w zasilania pr\u0105dem przemiennym<\/strong><\/h3>\r\n<a href=\"https:\/\/www.britecelectric.com\/pl\/classification-of-spds\/attachment\/ac-power-surge-protection-2\/\" rel=\"attachment wp-att-2103\"><img class=\"alignnone wp-image-2103\" src=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/12\/AC-Power-Surge-Protection-1024x1024.webp\" alt=\"Urz\u0105dzenie zabezpieczaj\u0105ce przed przepi\u0119ciami pr\u0105du przemiennego\" width=\"868\" height=\"868\" \/><\/a>\r\n<p data-start=\"3112\" data-end=\"3303\">W systemach dystrybucji pr\u0105du przemiennego SPD s\u0105 u\u017cywane g\u0142\u00f3wnie do ochrony sprz\u0119tu i sieci elektroenergetycznych przed przej\u015bciowymi przepi\u0119ciami spowodowanymi uderzeniami pioruna, prze\u0142\u0105czaniem medi\u00f3w i zdarzeniami zwi\u0105zanymi z usuwaniem usterek.<\/p>\r\n\r\n<ul data-start=\"3305\" data-end=\"3453\">\r\n \t<li data-start=\"3305\" data-end=\"3392\">\r\n<p data-start=\"3307\" data-end=\"3392\"><strong data-start=\"3307\" data-end=\"3322\">SPD typu 1<\/strong>: Instalowany na g\u0142\u00f3wnych tablicach rozdzielczych w celu obs\u0142ugi przepi\u0119\u0107 o du\u017cej energii<\/p>\r\n<\/li>\r\n \t<li data-start=\"3393\" data-end=\"3453\">\r\n<p data-start=\"3395\" data-end=\"3453\"><strong data-start=\"3395\" data-end=\"3410\">SPD typu 2<\/strong>: Zainstalowany poni\u017cej w celu zapewnienia lokalnej ochrony<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"3455\" data-end=\"3591\">Urz\u0105dzenia SPD dla pr\u0105du przemiennego musz\u0105 odpowiada\u0107 napi\u0119ciu znamionowemu systemu i Uc, zapewniaj\u0105c jednocze\u015bnie wystarczaj\u0105c\u0105 odporno\u015b\u0107 na zwarcia (Isccr).<\/p>\r\n<p data-start=\"3593\" data-end=\"3629\">Typowe komponenty wewn\u0119trzne obejmuj\u0105:<\/p>\r\n\r\n<ul data-start=\"3630\" data-end=\"3736\">\r\n \t<li data-start=\"3630\" data-end=\"3677\">\r\n<p data-start=\"3632\" data-end=\"3677\">MOV zapewniaj\u0105ce szybk\u0105 reakcj\u0119 i stabilizacj\u0119 napi\u0119cia<\/p>\r\n<\/li>\r\n \t<li data-start=\"3678\" data-end=\"3736\">\r\n<p data-start=\"3680\" data-end=\"3736\">GDT do przenoszenia du\u017cej energii i izolacji przed wyciekami<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"3738\" data-end=\"3801\">Po\u0142\u0105czenie obu zapewnia szybkie t\u0142umienie i d\u0142ugowieczno\u015b\u0107.<\/p>\r\n\r\n<h3 data-start=\"3808\" data-end=\"3847\"><strong data-start=\"3812\" data-end=\"3847\">2. Zastosowania system\u00f3w zasilania pr\u0105dem sta\u0142ym<\/strong><\/h3>\r\n<p data-start=\"3849\" data-end=\"3868\">Systemy pr\u0105du sta\u0142ego takie jak:<\/p>\r\n\r\n<ul data-start=\"3869\" data-end=\"3979\">\r\n \t<li data-start=\"3869\" data-end=\"3894\">\r\n<p data-start=\"3871\" data-end=\"3894\">Telekomunikacyjne stacje bazowe<\/p>\r\n<\/li>\r\n \t<li data-start=\"3895\" data-end=\"3926\">\r\n<p data-start=\"3897\" data-end=\"3926\">Przemys\u0142owe szafy sterownicze<\/p>\r\n<\/li>\r\n \t<li data-start=\"3927\" data-end=\"3946\">\r\n<p data-start=\"3929\" data-end=\"3946\">Przechowywanie baterii<\/p>\r\n<\/li>\r\n \t<li data-start=\"3947\" data-end=\"3962\">\r\n<p data-start=\"3949\" data-end=\"3962\">\u0141adowanie pojazd\u00f3w elektrycznych<\/p>\r\n<\/li>\r\n \t<li data-start=\"3963\" data-end=\"3979\">\r\n<p data-start=\"3965\" data-end=\"3979\">Autobusy zasilane energi\u0105 s\u0142oneczn\u0105 pr\u0105du sta\u0142ego<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"3981\" data-end=\"4095\">\u2026wymagaj\u0105 SPD zaprojektowanych specjalnie dla ci\u0105g\u0142ego napi\u0119cia sta\u0142ego, kt\u00f3re nie przechodzi przez zero i mo\u017ce wytrzyma\u0107 \u0142uki.<\/p>\r\n<p data-start=\"4097\" data-end=\"4105\">SPD pr\u0105du sta\u0142ego:<\/p>\r\n\r\n<ul data-start=\"4106\" data-end=\"4332\">\r\n \t<li data-start=\"4106\" data-end=\"4143\">\r\n<p data-start=\"4108\" data-end=\"4143\">Zwykle u\u017cywaj MOV wysokiego napi\u0119cia<\/p>\r\n<\/li>\r\n \t<li data-start=\"4144\" data-end=\"4208\">\r\n<p data-start=\"4146\" data-end=\"4208\">Musi wytrzyma\u0107 wysokie, sta\u0142e napi\u0119cie pr\u0105du sta\u0142ego bez przegrzania<\/p>\r\n<\/li>\r\n \t<li data-start=\"4209\" data-end=\"4270\">\r\n<p data-start=\"4211\" data-end=\"4270\">Instalowany na panelach pr\u0105du sta\u0142ego, wej\u015bciach falownika lub bateriach akumulator\u00f3w<\/p>\r\n<\/li>\r\n \t<li data-start=\"4271\" data-end=\"4332\">\r\n<p data-start=\"4273\" data-end=\"4332\">Pom\u00f3\u017c unikn\u0105\u0107 przestoj\u00f3w systemu z powodu przepi\u0119\u0107 lub szum\u00f3w prze\u0142\u0105czania<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"4339\" data-end=\"4387\"><strong data-start=\"4343\" data-end=\"4387\">3. Zastosowania system\u00f3w fotowoltaicznych (PV).<\/strong><\/h3>\r\n<p data-start=\"4389\" data-end=\"4540\">Systemy fotowoltaiczne charakteryzuj\u0105 si\u0119 wysokim napi\u0119ciem sta\u0142ym (do 1500 VDC), du\u017cymi powierzchniami tablic i cz\u0119stym nara\u017ceniem na przepi\u0119cia piorunowe w zwi\u0105zku z monta\u017cem na dachu lub w terenie.<\/p>\r\n<p data-start=\"4542\" data-end=\"4576\">SPD specyficzne dla fotowoltaiki musz\u0105 spe\u0142nia\u0107:<\/p>\r\n\r\n<ul data-start=\"4577\" data-end=\"4615\">\r\n \t<li data-start=\"4577\" data-end=\"4597\">\r\n<p data-start=\"4579\" data-end=\"4597\"><a href=\"https:\/\/webstore.iec.ch\/en\/publication\/26931\" target=\"_blank\" rel=\"nofollow noopener\"><strong data-start=\"4579\" data-end=\"4595\">IEC 61643-31<\/strong><\/a><\/p>\r\n<\/li>\r\n \t<li data-start=\"4598\" data-end=\"4615\">\r\n<p data-start=\"4600\" data-end=\"4615\"><a href=\"https:\/\/cdn.standards.iteh.ai\/samples\/22527\/5b6a4f03275341d2bd18880b7a0877e7\/SIST-EN-50539-11-2013.pdf\" target=\"_blank\" rel=\"nofollow noopener\"><strong data-start=\"4600\" data-end=\"4615\">EN 50539-11<\/strong><\/a><\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"4617\" data-end=\"4638\">S\u0105 one rozmieszczone pod adresem:<\/p>\r\n\r\n<ul data-start=\"4639\" data-end=\"4791\">\r\n \t<li data-start=\"4639\" data-end=\"4685\">\r\n<p data-start=\"4641\" data-end=\"4685\"><strong data-start=\"4641\" data-end=\"4652\">Strona DC<\/strong>: Pomi\u0119dzy panelem fotowoltaicznym a falownikiem<\/p>\r\n<\/li>\r\n \t<li data-start=\"4686\" data-end=\"4740\">\r\n<p data-start=\"4688\" data-end=\"4740\"><strong data-start=\"4688\" data-end=\"4706\">Wej\u015bcie falownika<\/strong>: Do wewn\u0119trznego zabezpieczenia szyny DC<\/p>\r\n<\/li>\r\n \t<li data-start=\"4741\" data-end=\"4791\">\r\n<p data-start=\"4743\" data-end=\"4791\"><strong data-start=\"4743\" data-end=\"4754\">Strona AC<\/strong>: Pomi\u0119dzy falownikiem a interfejsem sieciowym<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"4793\" data-end=\"4814\">Wymagania obejmuj\u0105:<\/p>\r\n\r\n<ul data-start=\"4815\" data-end=\"4942\">\r\n \t<li data-start=\"4815\" data-end=\"4837\">\r\n<p data-start=\"4817\" data-end=\"4837\">Wysokie MCOV (Uc)<\/p>\r\n<\/li>\r\n \t<li data-start=\"4838\" data-end=\"4871\">\r\n<p data-start=\"4840\" data-end=\"4871\">Niski poziom ochrony (g\u00f3rny)<\/p>\r\n<\/li>\r\n \t<li data-start=\"4872\" data-end=\"4891\">\r\n<p data-start=\"4874\" data-end=\"4891\">D\u0142uga \u017cywotno\u015b\u0107<\/p>\r\n<\/li>\r\n \t<li data-start=\"4892\" data-end=\"4942\">\r\n<p data-start=\"4894\" data-end=\"4942\">Odporno\u015b\u0107 na warunki atmosferyczne i promieniowanie UV (do zewn\u0119trznych skrzynek DC)<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"4944\" data-end=\"5038\">Dobrze rozmieszczone SPD fotowoltaiczne zmniejszaj\u0105 koszty wymiany sprz\u0119tu i poprawiaj\u0105 niezawodno\u015b\u0107 systemu oraz zwrot z inwestycji.<\/p>\r\n\r\n<h2 data-start=\"5045\" data-end=\"5094\"><strong data-start=\"5048\" data-end=\"5094\">Zrozumienie Iimp i Imax w ratingach SPD<\/strong><\/h2>\r\n<h3 data-start=\"5096\" data-end=\"5136\"><strong data-start=\"5100\" data-end=\"5136\">Impulsowy pr\u0105d roz\u0142adowania (Iimp)<\/strong><\/h3>\r\n<ul data-start=\"5138\" data-end=\"5403\">\r\n \t<li data-start=\"5138\" data-end=\"5174\">\r\n<p data-start=\"5140\" data-end=\"5174\">Charakterystyka SPD typu 1<\/p>\r\n<\/li>\r\n \t<li data-start=\"5175\" data-end=\"5216\">\r\n<p data-start=\"5177\" data-end=\"5216\">Symuluje bezpo\u015brednie uderzenie pioruna<\/p>\r\n<\/li>\r\n \t<li data-start=\"5217\" data-end=\"5255\">\r\n<p data-start=\"5219\" data-end=\"5255\">Testowano przy przebiegu 10\/350 \u00b5s<\/p>\r\n<\/li>\r\n \t<li data-start=\"5256\" data-end=\"5325\">\r\n<p data-start=\"5258\" data-end=\"5325\">Reprezentuje zdolno\u015b\u0107 SPD do radzenia sobie z pojedynczym ekstremalnym przepi\u0119ciem<\/p>\r\n<\/li>\r\n \t<li data-start=\"5326\" data-end=\"5403\">\r\n<p data-start=\"5328\" data-end=\"5403\">Nadaje si\u0119 do budowy punkt\u00f3w wej\u015bciowych lub odgromnik\u00f3w poni\u017cej<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"5405\" data-end=\"5445\"><strong data-start=\"5409\" data-end=\"5445\">Maksymalny pr\u0105d roz\u0142adowania (Imax)<\/strong><\/h3>\r\n<ul data-start=\"5447\" data-end=\"5717\">\r\n \t<li data-start=\"5447\" data-end=\"5483\">\r\n<p data-start=\"5449\" data-end=\"5483\">Charakterystyka SPD typu 2<\/p>\r\n<\/li>\r\n \t<li data-start=\"5484\" data-end=\"5567\">\r\n<p data-start=\"5486\" data-end=\"5567\">Symuluje wiele przepi\u0119\u0107 o ni\u017cszej energii spowodowanych wy\u0142adowaniami prze\u0142\u0105czaj\u0105cymi lub po\u015brednimi<\/p>\r\n<\/li>\r\n \t<li data-start=\"5568\" data-end=\"5604\">\r\n<p data-start=\"5570\" data-end=\"5604\">Testowano przy przebiegu fali 8\/20 \u00b5s<\/p>\r\n<\/li>\r\n \t<li data-start=\"5605\" data-end=\"5643\">\r\n<p data-start=\"5607\" data-end=\"5643\">Odzwierciedla d\u0142ugoterminow\u0105 wytrzyma\u0142o\u015b\u0107 na przepi\u0119cia<\/p>\r\n<\/li>\r\n \t<li data-start=\"5644\" data-end=\"5717\">\r\n<p data-start=\"5646\" data-end=\"5717\">Nadaje si\u0119 do tablic rozdzielczych i ochrony na poziomie sprz\u0119tu<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"5719\" data-end=\"5737\"><strong data-start=\"5722\" data-end=\"5736\">Podsumowuj\u0105c<\/strong>:<\/p>\r\n\r\n<ul data-start=\"5738\" data-end=\"5943\">\r\n \t<li data-start=\"5738\" data-end=\"5796\">\r\n<p data-start=\"5740\" data-end=\"5796\"><strong data-start=\"5740\" data-end=\"5748\">Iimp<\/strong> = Szczytowa wytrzyma\u0142o\u015b\u0107 w przypadku rzadkich wydarze\u0144 o du\u017cej energii<\/p>\r\n<\/li>\r\n \t<li data-start=\"5797\" data-end=\"5943\">\r\n<p data-start=\"5799\" data-end=\"5943\"><strong data-start=\"5799\" data-end=\"5807\">Imaks<\/strong> = Powtarzalna wytrzyma\u0142o\u015b\u0107 w przypadku cz\u0119stych stan\u00f3w nieustalonych o ni\u017cszej energii<br data-start=\"5867\" data-end=\"5870\" \/>Obydwa s\u0105 niezb\u0119dne w budowaniu wielopoziomowej strategii ochrony SPD.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h2 data-start=\"5950\" data-end=\"5967\"><strong data-start=\"5953\" data-end=\"5967\">Wniosek<\/strong><\/h2>\r\n<p data-start=\"5969\" data-end=\"6277\">Ograniczniki przepi\u0119\u0107 s\u0105 niezb\u0119dne w nowoczesnych systemach elektroenergetycznych, zapewniaj\u0105c bezpiecze\u0144stwo urz\u0105dze\u0144 i ci\u0105g\u0142o\u015b\u0107 zasilania. Ich klasyfikacja na typ 1, 2 i 3, wraz ze zrozumieniem parametr\u00f3w technicznych, takich jak Uc, Up, Iimp i Imax, jest niezb\u0119dna do prawid\u0142owego wyboru i wdro\u017cenia.<\/p>\r\n<p data-start=\"6279\" data-end=\"6457\">Niezale\u017cnie od tego, czy chodzi o ochron\u0119 system\u00f3w pr\u0105du przemiennego, automatyki pr\u0105du sta\u0142ego czy fotowoltaiki, wyb\u00f3r odpowiedniego SPD o odpowiednich parametrach pomaga zmniejszy\u0107 uszkodzenia, obni\u017cy\u0107 koszty eksploatacji i konserwacji oraz wyd\u0142u\u017cy\u0107 \u017cywotno\u015b\u0107 systemu.<\/p>\r\n<p data-start=\"6459\" data-end=\"6579\">Dobrze zaprojektowany plan SPD to niewielka inwestycja, kt\u00f3ra chroni du\u017c\u0105 infrastruktur\u0119 przed nieodwracalnymi uszkodzeniami.<\/p>","protected":false},"featured_media":785,"parent":0,"menu_order":182,"template":"","meta":{"_acf_changed":false},"blog_category":[8],"class_list":["post-784","blog","type-blog","status-publish","has-post-thumbnail","hentry","blog_category-company-news"],"acf":{"des":"A surge protective device (SPD) is designed to protect electrical systems and equipment from surge events by limiting transient voltages and diverting surge currents.","txt":"A surge protective device (SPD) protects electrical systems and equipment from surge events by limiting transient voltages and diverting surge currents.\r\n<h2><strong>The important technical characteristics of SPD:<\/strong><\/h2>\r\n<ul data-start=\"517\" data-end=\"826\">\r\n \t<li data-start=\"517\" data-end=\"566\">\r\n<p data-start=\"519\" data-end=\"566\">Maximum continuous operating voltage (Uc)<\/p>\r\n<\/li>\r\n \t<li data-start=\"567\" data-end=\"607\">\r\n<p data-start=\"569\" data-end=\"607\">Lightning impulse current (Iimp)<\/p>\r\n<\/li>\r\n \t<li data-start=\"608\" data-end=\"646\">\r\n<p data-start=\"610\" data-end=\"646\">Nominal discharge current (I)<\/p>\r\n<\/li>\r\n \t<li data-start=\"647\" data-end=\"684\">\r\n<p data-start=\"649\" data-end=\"684\">Voltage protection level (Up)<\/p>\r\n<\/li>\r\n \t<li data-start=\"685\" data-end=\"735\">\r\n<p data-start=\"687\" data-end=\"735\">Short circuit withstand capability (Isccr)<\/p>\r\n<\/li>\r\n \t<li data-start=\"736\" data-end=\"792\">\r\n<p data-start=\"738\" data-end=\"792\">Freewheeling interruption capability at Uc (Ifi)<\/p>\r\n<\/li>\r\n \t<li data-start=\"793\" data-end=\"826\">\r\n<p data-start=\"795\" data-end=\"826\">Transient overvoltage (TOV)<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"828\" data-end=\"1016\">These parameters determine the SPD\u2019s performance under different fault conditions and must be matched carefully to the system\u2019s voltage, installation point, and expected surge environment.<\/p>\r\n\r\n<h2><strong>SPD Categories or Types<\/strong><\/h2>\r\n<p data-start=\"1055\" data-end=\"1156\">SPDs are generally classified based on internal working principles and standard testing methods.<\/p>\r\n\r\n<h3 data-start=\"1158\" data-end=\"1187\"><strong data-start=\"1162\" data-end=\"1187\">By Component Behavior<\/strong><\/h3>\r\n<p data-start=\"1189\" data-end=\"1220\">The two main types of SPDs are:<\/p>\r\n\r\n<ul data-start=\"1222\" data-end=\"1292\">\r\n \t<li data-start=\"1222\" data-end=\"1257\">\r\n<p data-start=\"1224\" data-end=\"1257\">Voltage limiting components<\/p>\r\n<\/li>\r\n \t<li data-start=\"1258\" data-end=\"1292\">\r\n<p data-start=\"1260\" data-end=\"1292\">Voltage switching components<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"1294\" data-end=\"1417\">Most modern SPDs incorporate both component types to combine the advantages of each and reduce their respective weaknesses.<\/p>\r\n<p data-start=\"1419\" data-end=\"1461\">Voltage limiting components include:<\/p>\r\n\r\n<ul data-start=\"1462\" data-end=\"1539\">\r\n \t<li data-start=\"1462\" data-end=\"1494\">\r\n<p data-start=\"1464\" data-end=\"1494\">Metal Oxide Varistors (MOVs)<\/p>\r\n<\/li>\r\n \t<li data-start=\"1495\" data-end=\"1539\">\r\n<p data-start=\"1497\" data-end=\"1539\">Transient Voltage Suppression (TVS) diodes<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"1541\" data-end=\"1584\">Voltage switching components include:<\/p>\r\n\r\n<ul data-start=\"1585\" data-end=\"1628\">\r\n \t<li data-start=\"1585\" data-end=\"1615\">\r\n<p data-start=\"1587\" data-end=\"1615\">Gas Discharge Tubes (GDTs)<\/p>\r\n<\/li>\r\n \t<li data-start=\"1616\" data-end=\"1628\">\r\n<p data-start=\"1618\" data-end=\"1628\">Spark gaps<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"1630\" data-end=\"1725\">These components differ in response speed, energy-handling capacity, and aging characteristics.<\/p>\r\n<img class=\"size-full wp-image-17918 aligncenter\" src=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/12\/26.png\" sizes=\"(max-width: 570px) 100vw, 570px\" srcset=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/12\/26.png 570w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/12\/26-400x247.png 400w, https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/12\/26-150x93.png 150w\" alt=\"\" width=\"570\" height=\"352\" \/>\r\n<h2 data-start=\"1732\" data-end=\"1770\"><strong data-start=\"1735\" data-end=\"1770\">SPD Classification by Standards<\/strong><\/h2>\r\n<p data-start=\"1772\" data-end=\"1941\">According to ANSI\/IEEE C62.41, IEC 61643-11, and VDE Classification, there are three standard SPD types based on their tested waveform and application level.<\/p>\r\n\r\n<h3 data-start=\"1943\" data-end=\"1961\"><strong data-start=\"1947\" data-end=\"1961\">Type 1 SPD<\/strong><\/h3>\r\n<a href=\"https:\/\/www.britecelectric.com\/product\/brpv3-1000-12-5vg-1000v-12-5ka-type-12-pv-class-i-class-ii-spd\/\" rel=\"attachment wp-att-2104\"><img class=\"alignnone wp-image-2104\" src=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/12\/PV-Power-Surge-Protection-1024x1024.webp\" alt=\"Type 1 Surge Protection Device\" width=\"742\" height=\"742\" \/><\/a>\r\n<ul data-start=\"1963\" data-end=\"2210\">\r\n \t<li data-start=\"1963\" data-end=\"2035\">\r\n<p data-start=\"1965\" data-end=\"2035\">Tested with impulse discharge current Iimp (typically 10\/350 \u00b5s)<\/p>\r\n<\/li>\r\n \t<li data-start=\"2036\" data-end=\"2085\">\r\n<p data-start=\"2038\" data-end=\"2085\">Also tested with 8\/20 \u00b5s current impulses<\/p>\r\n<\/li>\r\n \t<li data-start=\"2086\" data-end=\"2139\">\r\n<p data-start=\"2088\" data-end=\"2139\">Designed for installation at the service entrance<\/p>\r\n<\/li>\r\n \t<li data-start=\"2140\" data-end=\"2210\">\r\n<p data-start=\"2142\" data-end=\"2210\">Protects against direct lightning current and high-energy surges<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"2212\" data-end=\"2230\"><strong data-start=\"2216\" data-end=\"2230\">Type 2 SPD<\/strong><\/h3>\r\n<ul data-start=\"2232\" data-end=\"2651\">\r\n \t<li data-start=\"2232\" data-end=\"2290\">\r\n<p data-start=\"2234\" data-end=\"2290\">Tested with nominal discharge current in (8\/20 \u00b5s)<\/p>\r\n<\/li>\r\n \t<li data-start=\"2291\" data-end=\"2362\">\r\n<p data-start=\"2293\" data-end=\"2362\">Optionally tested with maximum discharge current Imax (8\/20 \u00b5s)<\/p>\r\n<\/li>\r\n \t<li data-start=\"2363\" data-end=\"2429\">\r\n<p data-start=\"2365\" data-end=\"2429\">Note: Imax is not recommended as a basis for SPD selection<\/p>\r\n<\/li>\r\n \t<li data-start=\"2430\" data-end=\"2525\">\r\n<p data-start=\"2432\" data-end=\"2525\">For SPDs with voltage switching components, also tested with 1.2\/50 \u00b5s voltage impulses.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2526\" data-end=\"2586\">\r\n<p data-start=\"2528\" data-end=\"2586\">Installed at sub-distribution boards or equipment inputs<\/p>\r\n<\/li>\r\n \t<li data-start=\"2587\" data-end=\"2651\">\r\n<p data-start=\"2589\" data-end=\"2651\">Protects against switching surges and indirect lightning<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"2653\" data-end=\"2671\"><strong data-start=\"2657\" data-end=\"2671\">Type 3 SPD<\/strong><\/h3>\r\n<ul data-start=\"2673\" data-end=\"2913\">\r\n \t<li data-start=\"2673\" data-end=\"2843\">\r\n<p data-start=\"2675\" data-end=\"2722\">Tested with a combination wave generator:<\/p>\r\n\r\n<ul data-start=\"2725\" data-end=\"2843\">\r\n \t<li data-start=\"2725\" data-end=\"2765\">\r\n<p data-start=\"2727\" data-end=\"2765\">Open-circuit voltage Uoc (1.2\/50 \u00b5s)<\/p>\r\n<\/li>\r\n \t<li data-start=\"2768\" data-end=\"2807\">\r\n<p data-start=\"2770\" data-end=\"2807\">Short-circuit current Icw (8\/20 \u00b5s)<\/p>\r\n<\/li>\r\n \t<li data-start=\"2810\" data-end=\"2843\">\r\n<p data-start=\"2812\" data-end=\"2843\">Nominal output impedance: 2 \u03a9<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li data-start=\"2844\" data-end=\"2913\">\r\n<p data-start=\"2846\" data-end=\"2913\">Installed near sensitive terminal equipment for fine protection<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h2 data-start=\"2920\" data-end=\"2960\"><strong data-start=\"2923\" data-end=\"2960\">SPD Applications in Power Systems<\/strong><\/h2>\r\n<p data-start=\"2962\" data-end=\"3069\">SPDs are used in a wide range of AC and DC systems, each having specific design and selection requirements.<\/p>\r\n\r\n<h3 data-start=\"3071\" data-end=\"3110\"><strong data-start=\"3075\" data-end=\"3110\">1. AC Power System Applications<\/strong><\/h3>\r\n<a href=\"https:\/\/www.britecelectric.com\/classification-of-spds\/attachment\/ac-power-surge-protection-2\/\" rel=\"attachment wp-att-2103\"><img class=\"alignnone wp-image-2103\" src=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2023\/12\/AC-Power-Surge-Protection-1024x1024.webp\" alt=\"AC Power Surge Protection Device\" width=\"868\" height=\"868\" \/><\/a>\r\n<p data-start=\"3112\" data-end=\"3303\">In AC distribution systems, SPDs are mainly used to protect equipment and power networks from transient overvoltages caused by lightning strikes, utility switching, and fault-clearing events.<\/p>\r\n\r\n<ul data-start=\"3305\" data-end=\"3453\">\r\n \t<li data-start=\"3305\" data-end=\"3392\">\r\n<p data-start=\"3307\" data-end=\"3392\"><strong data-start=\"3307\" data-end=\"3322\">Type 1 SPDs<\/strong>: Installed at main distribution boards to handle high-energy surges<\/p>\r\n<\/li>\r\n \t<li data-start=\"3393\" data-end=\"3453\">\r\n<p data-start=\"3395\" data-end=\"3453\"><strong data-start=\"3395\" data-end=\"3410\">Type 2 SPDs<\/strong>: Installed downstream for local protection<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"3455\" data-end=\"3591\">SPDs for AC must match the system\u2019s nominal voltage and Uc while offering sufficient short-circuit withstand capability (Isccr).<\/p>\r\n<p data-start=\"3593\" data-end=\"3629\">Typical internal components include:<\/p>\r\n\r\n<ul data-start=\"3630\" data-end=\"3736\">\r\n \t<li data-start=\"3630\" data-end=\"3677\">\r\n<p data-start=\"3632\" data-end=\"3677\">MOVs for fast response and voltage clamping<\/p>\r\n<\/li>\r\n \t<li data-start=\"3678\" data-end=\"3736\">\r\n<p data-start=\"3680\" data-end=\"3736\">GDTs for high energy handling and isolation from leakage<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"3738\" data-end=\"3801\">The combination of both ensures fast suppression and longevity.<\/p>\r\n\r\n<h3 data-start=\"3808\" data-end=\"3847\"><strong data-start=\"3812\" data-end=\"3847\">2. DC Power System Applications<\/strong><\/h3>\r\n<p data-start=\"3849\" data-end=\"3868\">DC systems such as:<\/p>\r\n\r\n<ul data-start=\"3869\" data-end=\"3979\">\r\n \t<li data-start=\"3869\" data-end=\"3894\">\r\n<p data-start=\"3871\" data-end=\"3894\">Telecom base stations<\/p>\r\n<\/li>\r\n \t<li data-start=\"3895\" data-end=\"3926\">\r\n<p data-start=\"3897\" data-end=\"3926\">Industrial control cabinets<\/p>\r\n<\/li>\r\n \t<li data-start=\"3927\" data-end=\"3946\">\r\n<p data-start=\"3929\" data-end=\"3946\">Battery storage<\/p>\r\n<\/li>\r\n \t<li data-start=\"3947\" data-end=\"3962\">\r\n<p data-start=\"3949\" data-end=\"3962\">EV charging<\/p>\r\n<\/li>\r\n \t<li data-start=\"3963\" data-end=\"3979\">\r\n<p data-start=\"3965\" data-end=\"3979\">Solar DC buses<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"3981\" data-end=\"4095\">\u2026require SPDs designed specifically for continuous direct voltage, which lacks zero crossing and can sustain arcs.<\/p>\r\n<p data-start=\"4097\" data-end=\"4105\">DC SPDs:<\/p>\r\n\r\n<ul data-start=\"4106\" data-end=\"4332\">\r\n \t<li data-start=\"4106\" data-end=\"4143\">\r\n<p data-start=\"4108\" data-end=\"4143\">Typically use high-voltage MOVs<\/p>\r\n<\/li>\r\n \t<li data-start=\"4144\" data-end=\"4208\">\r\n<p data-start=\"4146\" data-end=\"4208\">Must handle high steady-state DC voltage without overheating<\/p>\r\n<\/li>\r\n \t<li data-start=\"4209\" data-end=\"4270\">\r\n<p data-start=\"4211\" data-end=\"4270\">Installed at DC panels, inverter inputs, or battery banks<\/p>\r\n<\/li>\r\n \t<li data-start=\"4271\" data-end=\"4332\">\r\n<p data-start=\"4273\" data-end=\"4332\">Help avoid system downtime due to surges or switching noise<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"4339\" data-end=\"4387\"><strong data-start=\"4343\" data-end=\"4387\">3. Photovoltaic (PV) System Applications<\/strong><\/h3>\r\n<p data-start=\"4389\" data-end=\"4540\">PV systems involve high DC voltages (up to 1500 VDC), large array surfaces, and frequent exposure to lightning surges due to rooftop or field mounting.<\/p>\r\n<p data-start=\"4542\" data-end=\"4576\">PV-specific SPDs must comply with:<\/p>\r\n\r\n<ul data-start=\"4577\" data-end=\"4615\">\r\n \t<li data-start=\"4577\" data-end=\"4597\">\r\n<p data-start=\"4579\" data-end=\"4597\"><a href=\"https:\/\/webstore.iec.ch\/en\/publication\/26931\" target=\"_blank\" rel=\"nofollow noopener\"><strong data-start=\"4579\" data-end=\"4595\">IEC 61643-31<\/strong><\/a><\/p>\r\n<\/li>\r\n \t<li data-start=\"4598\" data-end=\"4615\">\r\n<p data-start=\"4600\" data-end=\"4615\"><a href=\"https:\/\/cdn.standards.iteh.ai\/samples\/22527\/5b6a4f03275341d2bd18880b7a0877e7\/SIST-EN-50539-11-2013.pdf\" target=\"_blank\" rel=\"nofollow noopener\"><strong data-start=\"4600\" data-end=\"4615\">EN 50539-11<\/strong><\/a><\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"4617\" data-end=\"4638\">They are deployed at:<\/p>\r\n\r\n<ul data-start=\"4639\" data-end=\"4791\">\r\n \t<li data-start=\"4639\" data-end=\"4685\">\r\n<p data-start=\"4641\" data-end=\"4685\"><strong data-start=\"4641\" data-end=\"4652\">DC side<\/strong>: Between the PV array and the inverter<\/p>\r\n<\/li>\r\n \t<li data-start=\"4686\" data-end=\"4740\">\r\n<p data-start=\"4688\" data-end=\"4740\"><strong data-start=\"4688\" data-end=\"4706\">Inverter input<\/strong>: For internal DC bus protection<\/p>\r\n<\/li>\r\n \t<li data-start=\"4741\" data-end=\"4791\">\r\n<p data-start=\"4743\" data-end=\"4791\"><strong data-start=\"4743\" data-end=\"4754\">AC side<\/strong>: Between the inverter and the grid interface<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"4793\" data-end=\"4814\">Requirements include:<\/p>\r\n\r\n<ul data-start=\"4815\" data-end=\"4942\">\r\n \t<li data-start=\"4815\" data-end=\"4837\">\r\n<p data-start=\"4817\" data-end=\"4837\">High MCOV (Uc)<\/p>\r\n<\/li>\r\n \t<li data-start=\"4838\" data-end=\"4871\">\r\n<p data-start=\"4840\" data-end=\"4871\">Low protection level (Up)<\/p>\r\n<\/li>\r\n \t<li data-start=\"4872\" data-end=\"4891\">\r\n<p data-start=\"4874\" data-end=\"4891\">Long surge life<\/p>\r\n<\/li>\r\n \t<li data-start=\"4892\" data-end=\"4942\">\r\n<p data-start=\"4894\" data-end=\"4942\">Weather and UV resistance (for outdoor DC boxes)<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"4944\" data-end=\"5038\">Well-placed PV SPDs reduce equipment replacement costs and improve system reliability and ROI.<\/p>\r\n\r\n<h2 data-start=\"5045\" data-end=\"5094\"><strong data-start=\"5048\" data-end=\"5094\">Understanding Iimp vs. Imax in SPD Ratings<\/strong><\/h2>\r\n<h3 data-start=\"5096\" data-end=\"5136\"><strong data-start=\"5100\" data-end=\"5136\">Impulse Discharge Current (Iimp)<\/strong><\/h3>\r\n<ul data-start=\"5138\" data-end=\"5403\">\r\n \t<li data-start=\"5138\" data-end=\"5174\">\r\n<p data-start=\"5140\" data-end=\"5174\">Characteristic of Type 1 SPD<\/p>\r\n<\/li>\r\n \t<li data-start=\"5175\" data-end=\"5216\">\r\n<p data-start=\"5177\" data-end=\"5216\">Simulates a direct lightning strike<\/p>\r\n<\/li>\r\n \t<li data-start=\"5217\" data-end=\"5255\">\r\n<p data-start=\"5219\" data-end=\"5255\">Tested with 10\/350 \u00b5s waveform<\/p>\r\n<\/li>\r\n \t<li data-start=\"5256\" data-end=\"5325\">\r\n<p data-start=\"5258\" data-end=\"5325\">Represents the SPD\u2019s capacity to handle a single extreme surge<\/p>\r\n<\/li>\r\n \t<li data-start=\"5326\" data-end=\"5403\">\r\n<p data-start=\"5328\" data-end=\"5403\">Suitable for building entry points or lightning arrestors downstream<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"5405\" data-end=\"5445\"><strong data-start=\"5409\" data-end=\"5445\">Maximum Discharge Current (Imax)<\/strong><\/h3>\r\n<ul data-start=\"5447\" data-end=\"5717\">\r\n \t<li data-start=\"5447\" data-end=\"5483\">\r\n<p data-start=\"5449\" data-end=\"5483\">Characteristic of Type 2 SPD<\/p>\r\n<\/li>\r\n \t<li data-start=\"5484\" data-end=\"5567\">\r\n<p data-start=\"5486\" data-end=\"5567\">Simulates multiple lower-energy surges from switching or indirect lightning<\/p>\r\n<\/li>\r\n \t<li data-start=\"5568\" data-end=\"5604\">\r\n<p data-start=\"5570\" data-end=\"5604\">Tested with 8\/20 \u00b5s waveform<\/p>\r\n<\/li>\r\n \t<li data-start=\"5605\" data-end=\"5643\">\r\n<p data-start=\"5607\" data-end=\"5643\">Reflects long-term surge endurance<\/p>\r\n<\/li>\r\n \t<li data-start=\"5644\" data-end=\"5717\">\r\n<p data-start=\"5646\" data-end=\"5717\">Suitable for distribution boards and equipment-level protection<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"5719\" data-end=\"5737\"><strong data-start=\"5722\" data-end=\"5736\">In summary<\/strong>:<\/p>\r\n\r\n<ul data-start=\"5738\" data-end=\"5943\">\r\n \t<li data-start=\"5738\" data-end=\"5796\">\r\n<p data-start=\"5740\" data-end=\"5796\"><strong data-start=\"5740\" data-end=\"5748\">Iimp<\/strong> = Peak endurance for rare, high-energy events<\/p>\r\n<\/li>\r\n \t<li data-start=\"5797\" data-end=\"5943\">\r\n<p data-start=\"5799\" data-end=\"5943\"><strong data-start=\"5799\" data-end=\"5807\">Imax<\/strong> = Repetitive endurance for frequent lower-energy transients<br data-start=\"5867\" data-end=\"5870\" \/>Both are essential in building a multi-level SPD protection strategy.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h2 data-start=\"5950\" data-end=\"5967\"><strong data-start=\"5953\" data-end=\"5967\">Conclusion<\/strong><\/h2>\r\n<p data-start=\"5969\" data-end=\"6277\">Surge protective devices are essential for modern power systems, ensuring equipment safety and power continuity. Their classification into Type 1, 2, and 3, along with the understanding of technical parameters like Uc, Up, Iimp, and Imax, is vital for proper selection and implementation.<\/p>\r\n<p data-start=\"6279\" data-end=\"6457\">Whether protecting AC systems, DC automation, or solar PV, selecting the right SPD with suitable ratings helps reduce damage, lower O&amp;M costs, and extend system life.<\/p>\r\n<p data-start=\"6459\" data-end=\"6579\">A well-engineered SPD plan is a small investment that protects your large-scale infrastructure from irreversible damage.<\/p>"},"_links":{"self":[{"href":"https:\/\/www.britecelectric.com\/pl\/wp-json\/wp\/v2\/blog\/784","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.britecelectric.com\/pl\/wp-json\/wp\/v2\/blog"}],"about":[{"href":"https:\/\/www.britecelectric.com\/pl\/wp-json\/wp\/v2\/types\/blog"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.britecelectric.com\/pl\/wp-json\/wp\/v2\/media\/785"}],"wp:attachment":[{"href":"https:\/\/www.britecelectric.com\/pl\/wp-json\/wp\/v2\/media?parent=784"}],"wp:term":[{"taxonomy":"blog_category","embeddable":true,"href":"https:\/\/www.britecelectric.com\/pl\/wp-json\/wp\/v2\/blog_category?post=784"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}