{"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\/tr\/blog\/classification-of-spds\/","title":{"rendered":"SPD'lerin s\u0131n\u0131fland\u0131r\u0131lmas\u0131"},"content":{"rendered":"A\u015f\u0131r\u0131 gerilim koruyucu cihaz (SPD), ge\u00e7ici voltajlar\u0131 s\u0131n\u0131rlayarak ve a\u015f\u0131r\u0131 ak\u0131mlar\u0131 y\u00f6nlendirerek elektrik sistemlerini ve ekipmanlar\u0131n\u0131 a\u015f\u0131r\u0131 gerilim olaylar\u0131na kar\u015f\u0131 korur.\r\n<h2><strong>SPD'nin \u00f6nemli teknik \u00f6zellikleri:<\/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\">Maksimum s\u00fcrekli \u00e7al\u0131\u015fma voltaj\u0131 (UC)<\/p>\r\n<\/li>\r\n \t<li data-start=\"567\" data-end=\"607\">\r\n<p data-start=\"569\" data-end=\"607\">Y\u0131ld\u0131r\u0131m darbe ak\u0131m\u0131 (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 de\u015farj ak\u0131m\u0131 (I)<\/p>\r\n<\/li>\r\n \t<li data-start=\"647\" data-end=\"684\">\r\n<p data-start=\"649\" data-end=\"684\">Gerilim koruma seviyesi (Yukar\u0131)<\/p>\r\n<\/li>\r\n \t<li data-start=\"685\" data-end=\"735\">\r\n<p data-start=\"687\" data-end=\"735\">K\u0131sa devreye dayanma kapasitesi (Isccr)<\/p>\r\n<\/li>\r\n \t<li data-start=\"736\" data-end=\"792\">\r\n<p data-start=\"738\" data-end=\"792\">Uc'de (Ifi) serbest d\u00f6n\u00fc\u015fl\u00fc kesinti kapasitesi<\/p>\r\n<\/li>\r\n \t<li data-start=\"793\" data-end=\"826\">\r\n<p data-start=\"795\" data-end=\"826\">Ge\u00e7ici a\u015f\u0131r\u0131 gerilim (TOV)<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"828\" data-end=\"1016\">Bu parametreler, SPD'nin farkl\u0131 ar\u0131za ko\u015fullar\u0131 alt\u0131ndaki performans\u0131n\u0131 belirler ve sistemin voltaj\u0131na, kurulum noktas\u0131na ve beklenen dalgalanma ortam\u0131na g\u00f6re dikkatli bir \u015fekilde e\u015fle\u015ftirilmelidir.<\/p>\r\n\r\n<h2><strong>SPD Kategorileri veya T\u00fcrleri<\/strong><\/h2>\r\n<p data-start=\"1055\" data-end=\"1156\">SPD'ler genellikle dahili \u00e7al\u0131\u015fma prensiplerine ve standart test y\u00f6ntemlerine g\u00f6re s\u0131n\u0131fland\u0131r\u0131l\u0131r.<\/p>\r\n\r\n<h3 data-start=\"1158\" data-end=\"1187\"><strong data-start=\"1162\" data-end=\"1187\">Bile\u015fen Davran\u0131\u015f\u0131na G\u00f6re<\/strong><\/h3>\r\n<p data-start=\"1189\" data-end=\"1220\">\u0130ki ana SPD t\u00fcr\u00fc \u015funlard\u0131r:<\/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\">Gerilim s\u0131n\u0131rlama bile\u015fenleri<\/p>\r\n<\/li>\r\n \t<li data-start=\"1258\" data-end=\"1292\">\r\n<p data-start=\"1260\" data-end=\"1292\">Gerilim anahtarlama bile\u015fenleri<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"1294\" data-end=\"1417\">\u00c7o\u011fu modern SPD, her birinin avantajlar\u0131n\u0131 birle\u015ftirmek ve ilgili zay\u0131fl\u0131klar\u0131n\u0131 azaltmak i\u00e7in her iki bile\u015fen tipini de i\u00e7erir.<\/p>\r\n<p data-start=\"1419\" data-end=\"1461\">Gerilim s\u0131n\u0131rlay\u0131c\u0131 bile\u015fenler \u015funlar\u0131 i\u00e7erir:<\/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 Oksit Varist\u00f6rler (MOV'ler)<\/p>\r\n<\/li>\r\n \t<li data-start=\"1495\" data-end=\"1539\">\r\n<p data-start=\"1497\" data-end=\"1539\">Ge\u00e7ici Gerilim Bast\u0131rma (TVS) diyotlar\u0131<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"1541\" data-end=\"1584\">Gerilim anahtarlama bile\u015fenleri \u015funlar\u0131 i\u00e7erir:<\/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\">Gaz De\u015farj T\u00fcpleri (GDT'ler)<\/p>\r\n<\/li>\r\n \t<li data-start=\"1616\" data-end=\"1628\">\r\n<p data-start=\"1618\" data-end=\"1628\">K\u0131v\u0131lc\u0131m bo\u015fluklar\u0131<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"1630\" data-end=\"1725\">Bu bile\u015fenler tepki h\u0131z\u0131, enerji i\u015fleme kapasitesi ve eskime \u00f6zellikleri a\u00e7\u0131s\u0131ndan farkl\u0131l\u0131k g\u00f6sterir.<\/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\">Standartlara G\u00f6re SPD S\u0131n\u0131fland\u0131rmas\u0131<\/strong><\/h2>\r\n<p data-start=\"1772\" data-end=\"1941\">ANSI\/IEEE C62.41, IEC 61643-11 ve VDE S\u0131n\u0131fland\u0131rmas\u0131na g\u00f6re, test edilen dalga bi\u00e7imine ve uygulama d\u00fczeyine ba\u011fl\u0131 olarak \u00fc\u00e7 standart SPD t\u00fcr\u00fc vard\u0131r.<\/p>\r\n\r\n<h3 data-start=\"1943\" data-end=\"1961\"><strong data-start=\"1947\" data-end=\"1961\">Tip 1 SPD<\/strong><\/h3>\r\n<a href=\"https:\/\/www.britecelectric.com\/tr\/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=\"Tip 1 A\u015f\u0131r\u0131 Gerilim Koruma Cihaz\u0131\" 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\">Darbe de\u015farj ak\u0131m\u0131 Iimp (tipik olarak 10\/350 \u00b5s) ile test edilmi\u015ftir<\/p>\r\n<\/li>\r\n \t<li data-start=\"2036\" data-end=\"2085\">\r\n<p data-start=\"2038\" data-end=\"2085\">Ayr\u0131ca 8\/20 \u00b5s ak\u0131m darbeleriyle test edilmi\u015ftir<\/p>\r\n<\/li>\r\n \t<li data-start=\"2086\" data-end=\"2139\">\r\n<p data-start=\"2088\" data-end=\"2139\">Servis giri\u015finde kurulum i\u00e7in tasarlanm\u0131\u015ft\u0131r<\/p>\r\n<\/li>\r\n \t<li data-start=\"2140\" data-end=\"2210\">\r\n<p data-start=\"2142\" data-end=\"2210\">Do\u011frudan y\u0131ld\u0131r\u0131m ak\u0131m\u0131na ve y\u00fcksek enerjili dalgalanmalara kar\u015f\u0131 koruma sa\u011flar<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"2212\" data-end=\"2230\"><strong data-start=\"2216\" data-end=\"2230\">Tip 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\">(8\/20 \u00b5s) nominal de\u015farj ak\u0131m\u0131yla test edilmi\u015ftir<\/p>\r\n<\/li>\r\n \t<li data-start=\"2291\" data-end=\"2362\">\r\n<p data-start=\"2293\" data-end=\"2362\">\u0130ste\u011fe ba\u011fl\u0131 olarak maksimum de\u015farj ak\u0131m\u0131 Imax (8\/20 \u00b5s) ile test edilmi\u015ftir<\/p>\r\n<\/li>\r\n \t<li data-start=\"2363\" data-end=\"2429\">\r\n<p data-start=\"2365\" data-end=\"2429\">Not: Imax, SPD se\u00e7imi i\u00e7in temel olarak \u00f6nerilmez<\/p>\r\n<\/li>\r\n \t<li data-start=\"2430\" data-end=\"2525\">\r\n<p data-start=\"2432\" data-end=\"2525\">Gerilim anahtarlama bile\u015fenlerine sahip SPD'ler i\u00e7in ayr\u0131ca 1,2\/50 \u00b5s gerilim darbeleriyle test edilmi\u015ftir.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2526\" data-end=\"2586\">\r\n<p data-start=\"2528\" data-end=\"2586\">Alt da\u011f\u0131t\u0131m panolar\u0131na veya ekipman giri\u015flerine kurulur<\/p>\r\n<\/li>\r\n \t<li data-start=\"2587\" data-end=\"2651\">\r\n<p data-start=\"2589\" data-end=\"2651\">Anahtarlama dalgalanmalar\u0131na ve dolayl\u0131 y\u0131ld\u0131r\u0131ma kar\u015f\u0131 koruma sa\u011flar<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"2653\" data-end=\"2671\"><strong data-start=\"2657\" data-end=\"2671\">Tip 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\">Kombinasyon dalga \u00fcreteci ile test edilmi\u015ftir:<\/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\">A\u00e7\u0131k devre gerilimi 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\">K\u0131sa devre ak\u0131m\u0131 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 \u00e7\u0131k\u0131\u015f empedans\u0131: 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\">Hassas koruma i\u00e7in hassas terminal ekipman\u0131n\u0131n yak\u0131n\u0131na monte edilir<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h2 data-start=\"2920\" data-end=\"2960\"><strong data-start=\"2923\" data-end=\"2960\">G\u00fc\u00e7 Sistemlerinde SPD Uygulamalar\u0131<\/strong><\/h2>\r\n<p data-start=\"2962\" data-end=\"3069\">SPD'ler, her biri \u00f6zel tasar\u0131m ve se\u00e7im gereksinimlerine sahip olan \u00e7ok \u00e7e\u015fitli AC ve DC sistemlerinde kullan\u0131l\u0131r.<\/p>\r\n\r\n<h3 data-start=\"3071\" data-end=\"3110\"><strong data-start=\"3075\" data-end=\"3110\">1. AC G\u00fc\u00e7 Sistemi Uygulamalar\u0131<\/strong><\/h3>\r\n<a href=\"https:\/\/www.britecelectric.com\/tr\/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 G\u00fc\u00e7 Dalgalanma Koruma Cihaz\u0131\" width=\"868\" height=\"868\" \/><\/a>\r\n<p data-start=\"3112\" data-end=\"3303\">AC da\u011f\u0131t\u0131m sistemlerinde SPD'ler esas olarak ekipman\u0131 ve g\u00fc\u00e7 a\u011flar\u0131n\u0131 y\u0131ld\u0131r\u0131m \u00e7arpmas\u0131, \u015febeke anahtarlamas\u0131 ve ar\u0131za giderme olaylar\u0131n\u0131n neden oldu\u011fu ge\u00e7ici a\u015f\u0131r\u0131 gerilimlerden korumak i\u00e7in kullan\u0131l\u0131r.<\/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\">Tip 1 SPD'ler<\/strong>: Y\u00fcksek enerjili dalgalanmalar\u0131 y\u00f6netmek i\u00e7in ana da\u011f\u0131t\u0131m panolar\u0131na monte edilir<\/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\">Tip 2 SPD'ler<\/strong>: Yerel koruma i\u00e7in a\u015fa\u011f\u0131 y\u00f6nde kurulur<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"3455\" data-end=\"3591\">AC i\u00e7in SPD'ler, yeterli k\u0131sa devre dayan\u0131m kapasitesi (Isccr) sunarken sistemin nominal voltaj\u0131 ve Uc ile e\u015fle\u015fmelidir.<\/p>\r\n<p data-start=\"3593\" data-end=\"3629\">Tipik dahili bile\u015fenler \u015funlar\u0131 i\u00e7erir:<\/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\">H\u0131zl\u0131 tepki ve gerilim kelep\u00e7eleme i\u00e7in MOV'lar<\/p>\r\n<\/li>\r\n \t<li data-start=\"3678\" data-end=\"3736\">\r\n<p data-start=\"3680\" data-end=\"3736\">Y\u00fcksek enerji kullan\u0131m\u0131 ve s\u0131z\u0131nt\u0131dan izolasyon i\u00e7in GDT'ler<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"3738\" data-end=\"3801\">Her ikisinin kombinasyonu h\u0131zl\u0131 bask\u0131lama ve uzun \u00f6m\u00fcr sa\u011flar.<\/p>\r\n\r\n<h3 data-start=\"3808\" data-end=\"3847\"><strong data-start=\"3812\" data-end=\"3847\">2. DC G\u00fc\u00e7 Sistemi Uygulamalar\u0131<\/strong><\/h3>\r\n<p data-start=\"3849\" data-end=\"3868\">A\u015fa\u011f\u0131daki gibi DC sistemleri:<\/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\">Telekom baz istasyonlar\u0131<\/p>\r\n<\/li>\r\n \t<li data-start=\"3895\" data-end=\"3926\">\r\n<p data-start=\"3897\" data-end=\"3926\">End\u00fcstriyel kontrol kabinleri<\/p>\r\n<\/li>\r\n \t<li data-start=\"3927\" data-end=\"3946\">\r\n<p data-start=\"3929\" data-end=\"3946\">Pil depolama<\/p>\r\n<\/li>\r\n \t<li data-start=\"3947\" data-end=\"3962\">\r\n<p data-start=\"3949\" data-end=\"3962\">EV \u015farj\u0131<\/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 otob\u00fcsler<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"3981\" data-end=\"4095\">\u2026s\u0131f\u0131r ge\u00e7i\u015fi olmayan ve arklar\u0131 s\u00fcrd\u00fcrebilen, s\u00fcrekli do\u011frudan voltaj i\u00e7in \u00f6zel olarak tasarlanm\u0131\u015f SPD'ler gerektirir.<\/p>\r\n<p data-start=\"4097\" data-end=\"4105\">DC SPD'ler:<\/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\">Tipik olarak y\u00fcksek voltajl\u0131 MOV'lar kullan\u0131n<\/p>\r\n<\/li>\r\n \t<li data-start=\"4144\" data-end=\"4208\">\r\n<p data-start=\"4146\" data-end=\"4208\">A\u015f\u0131r\u0131 \u0131s\u0131nma olmadan y\u00fcksek kararl\u0131 durum DC voltaj\u0131yla ba\u015fa \u00e7\u0131kmal\u0131d\u0131r<\/p>\r\n<\/li>\r\n \t<li data-start=\"4209\" data-end=\"4270\">\r\n<p data-start=\"4211\" data-end=\"4270\">DC panellere, invert\u00f6r giri\u015flerine veya ak\u00fc bankalar\u0131na tak\u0131l\u0131r<\/p>\r\n<\/li>\r\n \t<li data-start=\"4271\" data-end=\"4332\">\r\n<p data-start=\"4273\" data-end=\"4332\">Dalgalanmalar veya anahtarlama g\u00fcr\u00fclt\u00fcs\u00fc nedeniyle sistemin kapal\u0131 kalmas\u0131n\u0131 \u00f6nlemeye yard\u0131mc\u0131 olun<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"4339\" data-end=\"4387\"><strong data-start=\"4343\" data-end=\"4387\">3. Fotovoltaik (PV) Sistem Uygulamalar\u0131<\/strong><\/h3>\r\n<p data-start=\"4389\" data-end=\"4540\">PV sistemleri, y\u00fcksek DC voltajlar\u0131 (1500 VDC'ye kadar), geni\u015f dizi y\u00fczeyleri ve \u00e7at\u0131 veya saha montaj\u0131 nedeniyle y\u0131ld\u0131r\u0131m dalgalanmalar\u0131na s\u0131k s\u0131k maruz kalmay\u0131 i\u00e7erir.<\/p>\r\n<p data-start=\"4542\" data-end=\"4576\">PV'ye \u00f6zg\u00fc SPD'ler a\u015fa\u011f\u0131dakilere uygun olmal\u0131d\u0131r:<\/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\">\u015euralarda konu\u015fland\u0131r\u0131l\u0131rlar:<\/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 taraf\u0131<\/strong>: PV dizisi ile evirici aras\u0131nda<\/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\">\u0130nvert\u00f6r giri\u015fi<\/strong>: Dahili DC bara korumas\u0131 i\u00e7in<\/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 taraf\u0131<\/strong>: \u0130nvert\u00f6r ile \u015febeke aray\u00fcz\u00fc aras\u0131nda<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"4793\" data-end=\"4814\">Gereksinimler \u015funlar\u0131 i\u00e7erir:<\/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\">Y\u00fcksek 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\">D\u00fc\u015f\u00fck koruma seviyesi (Yukar\u0131)<\/p>\r\n<\/li>\r\n \t<li data-start=\"4872\" data-end=\"4891\">\r\n<p data-start=\"4874\" data-end=\"4891\">Uzun dalgalanma \u00f6mr\u00fc<\/p>\r\n<\/li>\r\n \t<li data-start=\"4892\" data-end=\"4942\">\r\n<p data-start=\"4894\" data-end=\"4942\">Hava ko\u015fullar\u0131na ve UV \u0131\u015f\u0131nlar\u0131na dayan\u0131kl\u0131l\u0131k (d\u0131\u015f mekan DC kutular\u0131 i\u00e7in)<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"4944\" data-end=\"5038\">\u0130yi yerle\u015ftirilmi\u015f PV SPD'ler, ekipman de\u011fi\u015ftirme maliyetlerini azalt\u0131r ve sistem g\u00fcvenilirli\u011fini ve yat\u0131r\u0131m getirisini art\u0131r\u0131r.<\/p>\r\n\r\n<h2 data-start=\"5045\" data-end=\"5094\"><strong data-start=\"5048\" data-end=\"5094\">SPD Derecelendirmelerinde Iimp ve Imax'\u0131 Anlamak<\/strong><\/h2>\r\n<h3 data-start=\"5096\" data-end=\"5136\"><strong data-start=\"5100\" data-end=\"5136\">Darbe De\u015farj Ak\u0131m\u0131 (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\">Tip 1 SPD'nin \u00d6zellikleri<\/p>\r\n<\/li>\r\n \t<li data-start=\"5175\" data-end=\"5216\">\r\n<p data-start=\"5177\" data-end=\"5216\">Do\u011frudan y\u0131ld\u0131r\u0131m \u00e7arpmas\u0131n\u0131 sim\u00fcle eder<\/p>\r\n<\/li>\r\n \t<li data-start=\"5217\" data-end=\"5255\">\r\n<p data-start=\"5219\" data-end=\"5255\">10\/350 \u00b5s dalga formuyla test edilmi\u015ftir<\/p>\r\n<\/li>\r\n \t<li data-start=\"5256\" data-end=\"5325\">\r\n<p data-start=\"5258\" data-end=\"5325\">SPD'nin tek bir a\u015f\u0131r\u0131 dalgalanmayla ba\u015fa \u00e7\u0131kma kapasitesini temsil eder<\/p>\r\n<\/li>\r\n \t<li data-start=\"5326\" data-end=\"5403\">\r\n<p data-start=\"5328\" data-end=\"5403\">A\u015fa\u011f\u0131 y\u00f6ndeki bina giri\u015f noktalar\u0131 veya paratonerler i\u00e7in uygundur<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h3 data-start=\"5405\" data-end=\"5445\"><strong data-start=\"5409\" data-end=\"5445\">Maksimum De\u015farj Ak\u0131m\u0131 (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\">Tip 2 SPD'nin \u00d6zellikleri<\/p>\r\n<\/li>\r\n \t<li data-start=\"5484\" data-end=\"5567\">\r\n<p data-start=\"5486\" data-end=\"5567\">Anahtarlama veya dolayl\u0131 y\u0131ld\u0131r\u0131mdan kaynaklanan \u00e7ok say\u0131da d\u00fc\u015f\u00fck enerjili dalgalanmay\u0131 sim\u00fcle eder<\/p>\r\n<\/li>\r\n \t<li data-start=\"5568\" data-end=\"5604\">\r\n<p data-start=\"5570\" data-end=\"5604\">8\/20 \u00b5s dalga formuyla test edilmi\u015ftir<\/p>\r\n<\/li>\r\n \t<li data-start=\"5605\" data-end=\"5643\">\r\n<p data-start=\"5607\" data-end=\"5643\">Uzun vadeli dalgalanma dayan\u0131kl\u0131l\u0131\u011f\u0131n\u0131 yans\u0131t\u0131r<\/p>\r\n<\/li>\r\n \t<li data-start=\"5644\" data-end=\"5717\">\r\n<p data-start=\"5646\" data-end=\"5717\">Da\u011f\u0131t\u0131m panolar\u0131 ve ekipman d\u00fczeyinde koruma i\u00e7in uygundur<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"5719\" data-end=\"5737\"><strong data-start=\"5722\" data-end=\"5736\">\u00d6zetle<\/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\">topallamak<\/strong> = Nadir, y\u00fcksek enerjili olaylar i\u00e7in en y\u00fcksek dayan\u0131kl\u0131l\u0131k<\/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> = S\u0131k d\u00fc\u015f\u00fck enerjili ge\u00e7i\u015fler i\u00e7in tekrarlayan dayan\u0131kl\u0131l\u0131k<br data-start=\"5867\" data-end=\"5870\" \/>Her ikisi de \u00e7ok seviyeli bir SPD koruma stratejisi olu\u015fturmak i\u00e7in gereklidir.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h2 data-start=\"5950\" data-end=\"5967\"><strong data-start=\"5953\" data-end=\"5967\">\u00c7\u00f6z\u00fcm<\/strong><\/h2>\r\n<p data-start=\"5969\" data-end=\"6277\">A\u015f\u0131r\u0131 gerilim koruyucu cihazlar, modern g\u00fc\u00e7 sistemleri i\u00e7in ekipman g\u00fcvenli\u011fini ve g\u00fc\u00e7 s\u00fcreklili\u011fini sa\u011flamak i\u00e7in gereklidir. Uc, Up, Iimp ve Imax gibi teknik parametrelerin anla\u015f\u0131lmas\u0131yla birlikte bunlar\u0131n Tip 1, 2 ve 3 olarak s\u0131n\u0131fland\u0131r\u0131lmas\u0131, do\u011fru se\u00e7im ve uygulama i\u00e7in hayati \u00f6neme sahiptir.<\/p>\r\n<p data-start=\"6279\" data-end=\"6457\">AC sistemlerini, DC otomasyonunu veya solar PV'yi korurken, uygun derecelendirmelere sahip do\u011fru SPD'yi se\u00e7mek hasar\u0131n azalt\u0131lmas\u0131na, \u0130\u015fletme ve Bak\u0131m maliyetlerinin d\u00fc\u015f\u00fcr\u00fclmesine ve sistem \u00f6mr\u00fcn\u00fcn uzat\u0131lmas\u0131na yard\u0131mc\u0131 olur.<\/p>\r\n<p data-start=\"6459\" data-end=\"6579\">\u0130yi tasarlanm\u0131\u015f bir SPD plan\u0131, b\u00fcy\u00fck \u00f6l\u00e7ekli altyap\u0131n\u0131z\u0131 geri d\u00f6n\u00fc\u015f\u00fc olmayan hasarlardan koruyan k\u00fc\u00e7\u00fck bir yat\u0131r\u0131md\u0131r.<\/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\/tr\/wp-json\/wp\/v2\/blog\/784","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.britecelectric.com\/tr\/wp-json\/wp\/v2\/blog"}],"about":[{"href":"https:\/\/www.britecelectric.com\/tr\/wp-json\/wp\/v2\/types\/blog"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.britecelectric.com\/tr\/wp-json\/wp\/v2\/media\/785"}],"wp:attachment":[{"href":"https:\/\/www.britecelectric.com\/tr\/wp-json\/wp\/v2\/media?parent=784"}],"wp:term":[{"taxonomy":"blog_category","embeddable":true,"href":"https:\/\/www.britecelectric.com\/tr\/wp-json\/wp\/v2\/blog_category?post=784"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}