{"id":2154,"date":"2025-08-13T17:13:07","date_gmt":"2025-08-13T09:13:07","guid":{"rendered":"https:\/\/www.britecelectric.com\/?post_type=blog&#038;p=2154"},"modified":"2025-08-13T17:13:07","modified_gmt":"2025-08-13T09:13:07","slug":"what-is-a-type-2-surge-protection-device","status":"publish","type":"blog","link":"https:\/\/www.britecelectric.com\/tr\/blog\/what-is-a-type-2-surge-protection-device\/","title":{"rendered":"Tip 2 A\u015f\u0131r\u0131 Gerilim Koruma Cihaz\u0131 Nedir?"},"content":{"rendered":"<h2 data-start=\"226\" data-end=\"241\">girii\u015f<\/h2>\r\n<p data-start=\"243\" data-end=\"597\">A <a href=\"https:\/\/www.britecelectric.com\/tr\/product-category\/ac-power-surge-protection\/type-2-surge-protective-device\/\"><strong data-start=\"245\" data-end=\"279\">Tip 2 A\u015f\u0131r\u0131 Gerilim Koruma Cihaz\u0131<\/strong><\/a> (Tip 2 SPD), modern elektrik sistemlerindeki a\u015f\u0131r\u0131 gerilim koruman\u0131n omurgas\u0131d\u0131r. Ana da\u011f\u0131t\u0131m panosuna veya kontrol kabinine monte edildi\u011finde, katmanl\u0131 bir savunma stratejisinde ikinci kalkan g\u00f6revi g\u00f6r\u00fcr; yukar\u0131 y\u00f6ndeki Tip 1 SPD'lerin b\u0131rakt\u0131\u011f\u0131 art\u0131k dalgalanmalar\u0131 yakalar ve a\u011f i\u00e7inde olu\u015fturulan ge\u00e7ici ak\u0131mlar\u0131 bast\u0131r\u0131r.<\/p>\r\n<p data-start=\"599\" data-end=\"986\">Bu cihazlar, y\u0131ld\u0131r\u0131m\u0131n neden oldu\u011fu dalgalanmalardan, anahtarlama olaylar\u0131ndan veya \u015febeke kesintilerinden kaynaklanan 8\/20 \u03bcs darbe ak\u0131mlar\u0131na kar\u015f\u0131 koruma sa\u011flar.<\/p>\r\nG\u00fcvenilir, uzun vadeli koruma sa\u011flamak i\u00e7in m\u00fchendislerin ve teknik al\u0131c\u0131lar\u0131n Tip 2 SPD'nin birka\u00e7 temel y\u00f6n\u00fcn\u00fc anlamas\u0131 gerekir:\r\n<ul>\r\n \t<li><b>Tan\u0131m:<\/b> Nedir?<\/li>\r\n \t<li><b>Nas\u0131l \u00e7al\u0131\u015f\u0131r:<\/b> \u00c7al\u0131\u015fma prensipleri.<\/li>\r\n \t<li><b>Standartlar:<\/b> Hangi d\u00fczenlemelere uygundur?<\/li>\r\n \t<li><b>Kurulum ve Se\u00e7im:<\/b> Do\u011fru se\u00e7imi ve kurulumu i\u00e7in kurallar.<\/li>\r\n<\/ul>\r\n<h2 data-start=\"993\" data-end=\"1042\">Tip 2 A\u015f\u0131r\u0131 Gerilim Koruma Cihaz\u0131n\u0131n Tan\u0131m\u0131<\/h2>\r\n<p data-start=\"1044\" data-end=\"1268\">g\u00f6re <a href=\"https:\/\/webstore.iec.ch\/en\/publication\/65314\" target=\"_blank\" rel=\"noopener\"><em><strong>IEC\/EN 61643-11 standard\u0131<\/strong><\/em><\/a>, **Tip 2 SPD**, S\u0131n\u0131f II bir cihazd\u0131r. Do\u011frudan y\u0131ld\u0131r\u0131m d\u00fc\u015fmeyen yerler i\u00e7in tasarlanm\u0131\u015ft\u0131r. Ancak bu konumlar hala g\u00fc\u00e7l\u00fc ge\u00e7ici a\u015f\u0131r\u0131 gerilim riskiyle kar\u015f\u0131 kar\u015f\u0131yad\u0131r.<\/p>\r\n<p data-start=\"1270\" data-end=\"1290\">Anahtar \u00f6zellikler:<\/p>\r\n\r\n<ul data-start=\"1291\" data-end=\"1618\">\r\n \t<li data-start=\"1291\" data-end=\"1335\">\r\n<p data-start=\"1293\" data-end=\"1335\">8\/20 \u03bcs ak\u0131m dalga formlar\u0131yla test edilmi\u015ftir.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1336\" data-end=\"1466\">\r\n<p data-start=\"1338\" data-end=\"1466\">Tipik nominal de\u015farj ak\u0131m\u0131 (In) 5\u201320 kA aras\u0131ndad\u0131r ve maksimum de\u015farj ak\u0131m\u0131 (Imax) 40\u201380 kA'ya kadard\u0131r.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1467\" data-end=\"1530\">\r\n<p data-start=\"1469\" data-end=\"1530\">Elektrik servis panelinin y\u00fck taraf\u0131na monte edilir.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1531\" data-end=\"1618\">\r\n<p data-start=\"1533\" data-end=\"1618\">Hem harici art\u0131k dalgalanmalara hem de dahili anahtarlama dalgalanmalar\u0131na kar\u015f\u0131 koruma sa\u011flar.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"1620\" data-end=\"1802\">Pratik uygulamada, Tip 2 SPD, Tip 1 cihazdan sonra ve herhangi bir alt Tip 3 kullan\u0131m noktas\u0131 korumas\u0131ndan \u00f6nce yer al\u0131r ve \u00e7ok a\u015famal\u0131 a\u015f\u0131r\u0131 gerilim koruma sisteminin bir par\u00e7as\u0131n\u0131 olu\u015fturur.<\/p>\r\n<p data-start=\"1620\" data-end=\"1802\"><a href=\"https:\/\/www.britecelectric.com\/tr\/product-category\/ac-power-surge-protection\/type-2-surge-protective-device\/\" target=\"_blank\" rel=\"noopener\"><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-1024x1024.webp\" alt=\"\" width=\"900\" height=\"900\" \/><\/a><\/p>\r\n\r\n<h2 data-start=\"1809\" data-end=\"1859\">nas\u0131l bir <a href=\"https:\/\/www.britecelectric.com\/tr\/product-category\/ac-power-surge-protection\/type-2-surge-protective-device\/\" target=\"_blank\" rel=\"noopener\">Tip 2 A\u015f\u0131r\u0131 Gerilim Koruma Cihaz\u0131<\/a> i\u015f?<\/h2>\r\n<p data-start=\"1861\" data-end=\"2143\">Tip 2 SPD, gerilim kenetleme prensibine g\u00f6re \u00e7al\u0131\u015f\u0131r. Normal voltaj alt\u0131nda pasif kal\u0131r. Ge\u00e7ici bir dalgalanma maksimum s\u00fcrekli \u00e7al\u0131\u015fma voltaj\u0131n\u0131 (Uc) a\u015ft\u0131\u011f\u0131nda, dahili bile\u015fenleri h\u0131zla iletken duruma ge\u00e7erek fazla enerjiyi topra\u011fa y\u00f6nlendirir.<\/p>\r\n<p data-start=\"2145\" data-end=\"2176\"><strong data-start=\"2145\" data-end=\"2176\">Tipik bile\u015fenler \u015funlar\u0131 i\u00e7erir:<\/strong><\/p>\r\n\r\n<ul data-start=\"2177\" data-end=\"2557\">\r\n \t<li data-start=\"2177\" data-end=\"2285\">\r\n<p data-start=\"2179\" data-end=\"2285\"><strong data-start=\"2179\" data-end=\"2210\">MOV (Metal Oksit Varist\u00f6r):<\/strong> Dalgalanma enerjisini emen ve voltaj\u0131 azaltan birincil s\u0131k\u0131\u015ft\u0131rma eleman\u0131.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2286\" data-end=\"2385\">\r\n<p data-start=\"2288\" data-end=\"2385\"><strong data-start=\"2288\" data-end=\"2320\">Hibrit devreler (MOV + GDT):<\/strong> Y\u00fcksek dalgalanma kapasitesini geli\u015ftirilmi\u015f uzun vadeli g\u00fcvenilirlikle birle\u015ftirin.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2386\" data-end=\"2470\">\r\n<p data-start=\"2388\" data-end=\"2470\"><strong data-start=\"2388\" data-end=\"2418\">Termal ba\u011flant\u0131 kesme sistemi:<\/strong> G\u00fcvenli\u011fi korumak i\u00e7in kullan\u0131m \u00f6mr\u00fc sonunda SPD'yi izole eder.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2471\" data-end=\"2557\">\r\n<p data-start=\"2473\" data-end=\"2557\"><strong data-start=\"2473\" data-end=\"2494\">Durum g\u00f6stergesi:<\/strong> \u00c7al\u0131\u015fma durumunu g\u00f6steren g\u00f6rsel pencere veya kontak \u00e7\u0131k\u0131\u015f\u0131.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"2559\" data-end=\"2582\"><strong data-start=\"2559\" data-end=\"2582\">Operasyon s\u0131ras\u0131:<\/strong><\/p>\r\n\r\n<ol data-start=\"2583\" data-end=\"2882\">\r\n \t<li data-start=\"2583\" data-end=\"2645\">\r\n<p data-start=\"2586\" data-end=\"2645\"><strong data-start=\"2586\" data-end=\"2602\">Normal mod:<\/strong> Y\u00fcksek diren\u00e7, devreye etki etmez.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2646\" data-end=\"2699\">\r\n<p data-start=\"2649\" data-end=\"2699\"><strong data-start=\"2649\" data-end=\"2665\">Dalgalanma olay\u0131:<\/strong> Gerilim Uc e\u015fi\u011finin \u00fczerine \u00e7\u0131kar.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2700\" data-end=\"2819\">\r\n<p data-start=\"2703\" data-end=\"2819\"><strong data-start=\"2703\" data-end=\"2716\">S\u0131k\u0131\u015ft\u0131rma:<\/strong> SPD, dalgalanma ak\u0131m\u0131n\u0131 topra\u011fa y\u00f6nlendirerek voltaj\u0131 g\u00fcvenli bir Yukar\u0131ya (voltaj koruma seviyesi) d\u00fc\u015f\u00fcr\u00fcr.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2820\" data-end=\"2882\">\r\n<p data-start=\"2823\" data-end=\"2882\"><strong data-start=\"2823\" data-end=\"2836\">\u0130yile\u015fmek:<\/strong> SPD y\u00fcksek diren\u00e7li bekleme durumuna geri d\u00f6ner.<\/p>\r\n<\/li>\r\n<\/ol>\r\n<h2 data-start=\"2889\" data-end=\"2940\">Tip 2 A\u015f\u0131r\u0131 Gerilim Koruma Cihaz\u0131n\u0131n i\u015flevi<\/h2>\r\n<p data-start=\"2942\" data-end=\"3106\">Tip 2 a\u015f\u0131r\u0131 gerilim koruma cihaz\u0131n\u0131n birincil rol\u00fc, ge\u00e7ici a\u015f\u0131r\u0131 gerilimleri, a\u015fa\u011f\u0131 y\u00f6ndeki ekipman\u0131n hasar g\u00f6rmeden dayanabilece\u011fi bir seviyeye s\u0131n\u0131rlamakt\u0131r.<\/p>\r\n<p data-start=\"3108\" data-end=\"3122\">Anahtar i\u015flevler:<\/p>\r\n\r\n<ul data-start=\"3123\" data-end=\"3659\">\r\n \t<li data-start=\"3123\" data-end=\"3228\">\r\n<p data-start=\"3125\" data-end=\"3228\"><strong data-start=\"3125\" data-end=\"3154\">Art\u0131k dalgalanma s\u0131n\u0131rlamas\u0131<\/strong> \u2014 Tip 1 SPD enerjinin b\u00fcy\u00fck k\u0131sm\u0131n\u0131 emdikten sonra voltaj\u0131 azalt\u0131r.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3229\" data-end=\"3356\">\r\n<p data-start=\"3231\" data-end=\"3356\"><strong data-start=\"3231\" data-end=\"3262\">Anahtarlama dalgalanmas\u0131 bast\u0131rma<\/strong> \u2014 motor ba\u015flatma, pompa de\u011fi\u015ftirme veya di\u011fer end\u00fcktif y\u00fck operasyonlar\u0131ndan kaynaklanan ge\u00e7ici durumlar\u0131 azalt\u0131r.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3357\" data-end=\"3471\">\r\n<p data-start=\"3359\" data-end=\"3471\"><strong data-start=\"3359\" data-end=\"3383\">Ekipman korumas\u0131<\/strong> \u2014 hassas elektroniklerin, PLC'lerin, otomasyon sistemlerinin ve kontrol donan\u0131m\u0131n\u0131n hasar g\u00f6rmesini \u00f6nler.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3472\" data-end=\"3544\">\r\n<p data-start=\"3474\" data-end=\"3544\"><strong data-start=\"3474\" data-end=\"3496\">Sistem g\u00fcvenilirli\u011fi<\/strong> \u2014 A\u015f\u0131r\u0131 gerilimden kaynaklanan ar\u0131zalardan kaynaklanan kesinti s\u00fcresini azalt\u0131r.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3545\" data-end=\"3659\">\r\n<p data-start=\"3547\" data-end=\"3659\"><strong data-start=\"3547\" data-end=\"3568\">Bir \u00e7a\u011flayan\u0131n par\u00e7as\u0131<\/strong> \u2014 servis giri\u015f korumas\u0131 (Tip 1) ile kullan\u0131m noktas\u0131 cihazlar\u0131 (Tip 3) aras\u0131nda bulunur.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h2 data-start=\"3666\" data-end=\"3716\">Tip 2 A\u015f\u0131r\u0131 Gerilim Koruma Cihazlar\u0131n\u0131n Uygulamalar\u0131<\/h2>\r\n<a href=\"https:\/\/www.britecelectric.com\/tr\/attachment\/spd-install\/\" rel=\"attachment wp-att-2159\"><img class=\"alignnone size-full wp-image-2159\" src=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2025\/08\/SPD-install.jpg\" alt=\"\" width=\"745\" height=\"609\" \/><\/a>\r\n<p data-start=\"3718\" data-end=\"3747\">Tip 2 SPD'ler \u015furalara kuruludur:<\/p>\r\n\r\n<ul data-start=\"3748\" data-end=\"4151\">\r\n \t<li data-start=\"3748\" data-end=\"3810\">\r\n<p data-start=\"3750\" data-end=\"3810\">Y\u0131ld\u0131r\u0131mdan korunma sistemlerine sahip end\u00fcstriyel tesisler.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3811\" data-end=\"3891\">\r\n<p data-start=\"3813\" data-end=\"3891\">HVAC, asans\u00f6rler, ayd\u0131nlatma ve BT sistemlerini korumaya y\u00f6nelik ticari binalar.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3892\" data-end=\"3949\">\r\n<p data-start=\"3894\" data-end=\"3949\">End\u00fcstriyel otomasyon i\u00e7in makine kontrol kabinleri.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3950\" data-end=\"4034\">\r\n<p data-start=\"3952\" data-end=\"4034\">G\u00fcne\u015f PV invert\u00f6rleri ve r\u00fczgar t\u00fcrbini kontrolleri gibi yenilenebilir enerji sistemleri sa\u011flam gerektirir <a href=\"https:\/\/www.britecelectric.com\/tr\/product_category\/pv-surge-protection-type-2\/\" target=\"_blank\" rel=\"noopener\">dalgalanma korumas\u0131<\/a> (bkz. bizim <strong><em><a class=\"\" href=\"https:\/\/www.britecelectric.com\/tr\/blog\/solar-surge-protection-devices-selection-guide\/\" target=\"_blank\" rel=\"noopener\" data-start=\"201\" data-end=\"334\">Solar A\u015f\u0131r\u0131 Gerilim Koruma Cihazlar\u0131 Se\u00e7im K\u0131lavuzu<\/a><\/em><\/strong> Ve <strong><em><a class=\"\" href=\"https:\/\/www.britecelectric.com\/tr\/blog\/surge-protection-for-solar-photovoltaic-systems\/\" target=\"_blank\" rel=\"noopener\" data-start=\"339\" data-end=\"474\">G\u00fcne\u015f Fotovoltaik Sistemleri i\u00e7in A\u015f\u0131r\u0131 Gerilim Korumas\u0131<\/a><\/em><\/strong>).<\/p>\r\n<\/li>\r\n \t<li data-start=\"4035\" data-end=\"4093\">\r\n<p data-start=\"4037\" data-end=\"4093\">\u00c7al\u0131\u015fma s\u00fcresinin kritik oldu\u011fu hastaneler ve veri merkezleri.<\/p>\r\n<\/li>\r\n \t<li data-start=\"4094\" data-end=\"4151\">\r\n<p data-start=\"4096\" data-end=\"4151\">T\u00fcm evin korunmas\u0131 i\u00e7in konut ana panelleri.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h2 data-start=\"262\" data-end=\"316\">Tip 1, Tip 2 ve Tip 3 A\u015f\u0131r\u0131 Gerilim Koruma Cihazlar\u0131<\/h2>\r\n<p data-start=\"318\" data-end=\"648\">A\u015f\u0131r\u0131 gerilim koruma cihazlar\u0131n\u0131n \u00fc\u00e7 ana t\u00fcr\u00fc vard\u0131r. Her t\u00fcr\u00fcn elektrik sisteminde farkl\u0131 bir g\u00f6revi vard\u0131r. Ayr\u0131nt\u0131l\u0131 k\u0131lavuzumuzda daha fazlas\u0131n\u0131 buradan okuyabilirsiniz: <em><strong><a class=\"\" href=\"https:\/\/www.britecelectric.com\/tr\/blog\/difference-between-type-1-type-2-and-type-3-surge-protective-devices\/\" target=\"_blank\" rel=\"noopener\" data-start=\"468\" data-end=\"647\">Tip 1, Tip 2 ve Tip 3 A\u015f\u0131r\u0131 Gerilim Koruma Cihazlar\u0131 Aras\u0131ndaki Fark<\/a>.<\/strong><\/em><\/p>\r\n\r\n<table style=\"width: 60.5183%;\">\r\n<tbody>\r\n<tr>\r\n<td style=\"width: 20.4466%;\" width=\"142\"><strong><b>\u00d6zellik<\/b><\/strong><\/td>\r\n<td style=\"width: 25.0372%;\" width=\"142\"><strong><b>Tip 1 SPD<\/b><\/strong><\/td>\r\n<td style=\"width: 28.1389%;\" width=\"142\"><strong><b>Tip 2 SPD<\/b><\/strong><\/td>\r\n<td style=\"width: 58.2638%;\" width=\"142\"><strong><b>Tip 3 SPD<\/b><\/strong><\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"width: 20.4466%;\" width=\"142\">Konum<\/td>\r\n<td style=\"width: 25.0372%;\" width=\"142\">Servis giri\u015fine monte edilir.<\/td>\r\n<td style=\"width: 28.1389%;\" width=\"142\">Ana da\u011f\u0131t\u0131m panosuna monte edilir.<\/td>\r\n<td style=\"width: 58.2638%;\" width=\"142\">Hassas y\u00fcklerin yak\u0131n\u0131na monte edilir.<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"width: 20.4466%;\" width=\"142\">Dalga bi\u00e7imini test edin<\/td>\r\n<td style=\"width: 25.0372%;\" width=\"142\">10\/350 \u03bcs y\u0131ld\u0131r\u0131m darbesiyle test edilmi\u015ftir.<\/td>\r\n<td style=\"width: 28.1389%;\" width=\"142\">8\/20 \u03bcs dalgalanma ak\u0131m\u0131yla test edilmi\u015ftir.<\/td>\r\n<td style=\"width: 58.2638%;\" width=\"142\">1,2\/50 \u03bcs voltaj + 8\/20 \u03bcs ak\u0131mla test edilmi\u015ftir.<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"width: 20.4466%;\" width=\"142\">Ama\u00e7<\/td>\r\n<td style=\"width: 25.0372%;\" width=\"142\">Do\u011frudan y\u0131ld\u0131r\u0131m ak\u0131m\u0131n\u0131 bo\u015falt\u0131r.<\/td>\r\n<td style=\"width: 28.1389%;\" width=\"142\">Art\u0131k dalgalanmalar\u0131 ve anahtarlama dalgalanmalar\u0131n\u0131 s\u0131n\u0131rlar.<\/td>\r\n<td style=\"width: 58.2638%;\" width=\"142\">Elektronikler i\u00e7in nihai koruma sa\u011flar.<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"width: 20.4466%;\" width=\"142\">Tipik Yukar\u0131<\/td>\r\n<td style=\"width: 25.0372%;\" width=\"142\">\u2264 4 kV.<\/td>\r\n<td style=\"width: 28.1389%;\" width=\"142\">\u2264 2,5 kV.<\/td>\r\n<td style=\"width: 58.2638%;\" width=\"142\">\u2264 1,5 kV.<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"width: 20.4466%;\" width=\"142\">\u00d6rnekler<\/td>\r\n<td style=\"width: 25.0372%;\" width=\"142\">Y\u0131ld\u0131r\u0131mdan korunma sistemine (LPS) sahip binalar.<\/td>\r\n<td style=\"width: 28.1389%;\" width=\"142\">Kontrol panelleri ve alt da\u011f\u0131t\u0131m panolar\u0131.<\/td>\r\n<td style=\"width: 58.2638%;\" width=\"142\">BT ekipmanlar\u0131 ve ev elektroni\u011fi.<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<p data-start=\"1409\" data-end=\"1423\"><strong data-start=\"1409\" data-end=\"1421\">\u00d6zet:<\/strong><\/p>\r\n\r\n<ul data-start=\"1424\" data-end=\"1706\">\r\n \t<li data-start=\"1424\" data-end=\"1494\">\r\n<p data-start=\"1426\" data-end=\"1494\"><strong data-start=\"1426\" data-end=\"1440\">Tip 1 SPD<\/strong> Y\u0131ld\u0131r\u0131mdan kaynaklanan y\u00fcksek enerjili dalgalanman\u0131n \u00e7o\u011funu durdurur.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1495\" data-end=\"1610\">\r\n<p data-start=\"1497\" data-end=\"1610\"><strong data-start=\"1497\" data-end=\"1511\">Tip 2 SPD<\/strong> savunman\u0131n orta hatt\u0131d\u0131r. Kalan a\u015f\u0131r\u0131 gerilim voltaj\u0131n\u0131 azalt\u0131r ve anahtarlama dalgalanmalar\u0131n\u0131 kontrol eder.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1611\" data-end=\"1706\">\r\n<p data-start=\"1613\" data-end=\"1706\"><strong data-start=\"1613\" data-end=\"1627\">Tip 3 SPD<\/strong> son ad\u0131md\u0131r. Hassas elektronikleri k\u00fc\u00e7\u00fck, h\u0131zl\u0131 dalgalanmalardan korur.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h2 data-start=\"4715\" data-end=\"4766\">Do\u011fru a\u015f\u0131r\u0131 gerilim koruma cihaz\u0131 nas\u0131l se\u00e7ilir?<\/h2>\r\n<p data-start=\"4768\" data-end=\"4922\">En iyi Tip 2 a\u015f\u0131r\u0131 gerilim koruma cihaz\u0131n\u0131 se\u00e7erken se\u00e7im, sistem uyumlulu\u011funa, a\u015f\u0131r\u0131 gerilim risk d\u00fczeyine ve ekipman hassasiyetine g\u00f6re yap\u0131lmal\u0131d\u0131r.<\/p>\r\n<p data-start=\"4924\" data-end=\"5057\"><strong data-start=\"4924\" data-end=\"4976\">1. Sistem voltaj\u0131n\u0131 ve topraklama d\u00fczenini e\u015fle\u015ftirin<\/strong><br data-start=\"4976\" data-end=\"4979\" \/>Farkl\u0131 sistemler (TT, TN-S, TN-C, IT) farkl\u0131 SPD yap\u0131land\u0131rmalar\u0131 gerektirir:<\/p>\r\n\r\n<ul data-start=\"5058\" data-end=\"5212\">\r\n \t<li data-start=\"5058\" data-end=\"5104\">\r\n<p data-start=\"5060\" data-end=\"5104\"><strong data-start=\"5060\" data-end=\"5066\">4P<\/strong> (t\u00fcm kutup korumas\u0131) TN sistemleri i\u00e7in.<\/p>\r\n<\/li>\r\n \t<li data-start=\"5105\" data-end=\"5212\">\r\n<p data-start=\"5107\" data-end=\"5212\"><strong data-start=\"5107\" data-end=\"5114\">3+1<\/strong> TT sistemlerinin N-PE a\u015f\u0131r\u0131 gerilim olaylar\u0131n\u0131 ele almas\u0131 i\u00e7in yap\u0131land\u0131rma (L-N koruma art\u0131 N-PE mod\u00fcl\u00fc).<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"5214\" data-end=\"5404\"><strong data-start=\"5214\" data-end=\"5272\">2. Uc'yi (Maksimum S\u00fcrekli \u00c7al\u0131\u015fma Gerilimi) belirleyin<\/strong><br data-start=\"5272\" data-end=\"5275\" \/>Uc, gereksiz tetiklemeyi \u00f6nlemek i\u00e7in nominal sistem voltaj\u0131n\u0131n biraz \u00fczerinde olmal\u0131, ancak etkili koruma i\u00e7in yeterince d\u00fc\u015f\u00fck olmal\u0131d\u0131r.<\/p>\r\n<p data-start=\"5406\" data-end=\"5449\"><strong data-start=\"5406\" data-end=\"5447\">3. De\u015farj ak\u0131m\u0131 kapasitesini kontrol edin<\/strong><\/p>\r\n\r\n<ul data-start=\"5450\" data-end=\"5570\">\r\n \t<li data-start=\"5450\" data-end=\"5496\">\r\n<p data-start=\"5452\" data-end=\"5496\"><strong data-start=\"5452\" data-end=\"5487\">Nominal de\u015farj ak\u0131m\u0131 (In):<\/strong> 5\u201320 kA.<\/p>\r\n<\/li>\r\n \t<li data-start=\"5497\" data-end=\"5570\">\r\n<p data-start=\"5499\" data-end=\"5570\"><strong data-start=\"5499\" data-end=\"5536\">Maksimum de\u015farj ak\u0131m\u0131 (Imax):<\/strong> Risk seviyesine ba\u011fl\u0131 olarak 20\u201380 kA.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"5572\" data-end=\"5721\"><strong data-start=\"5572\" data-end=\"5608\">4. Gerilim koruma seviyesi (Yukar\u0131)<\/strong><br data-start=\"5608\" data-end=\"5611\" \/>A\u015fa\u011f\u0131 Yukar\u0131 daha iyi koruma anlam\u0131na gelir; genel ekipmanlar i\u00e7in \u2264 2,5 kV, hassas elektronik cihazlar i\u00e7in \u2264 1,5 kV hedefleyin.<\/p>\r\n<p data-start=\"5723\" data-end=\"5862\"><strong data-start=\"5723\" data-end=\"5767\">5. Ge\u00e7ici a\u015f\u0131r\u0131 gerilime (TOV) dayan\u0131m<\/strong><br data-start=\"5767\" data-end=\"5770\" \/>SPD'nin ar\u0131zalardan veya anahtarlama olaylar\u0131ndan kaynaklanan ge\u00e7ici a\u015f\u0131r\u0131 gerilim ko\u015fullar\u0131na dayanabilece\u011finden emin olun.<\/p>\r\n<p data-start=\"5864\" data-end=\"5892\"><strong data-start=\"5864\" data-end=\"5890\">6. Ek \u00f6zellikler<\/strong><\/p>\r\n\r\n<ul data-start=\"5893\" data-end=\"6019\">\r\n \t<li data-start=\"5893\" data-end=\"5935\">\r\n<p data-start=\"5895\" data-end=\"5935\">H\u0131zl\u0131 bak\u0131m i\u00e7in tak\u0131labilir mod\u00fcller.<\/p>\r\n<\/li>\r\n \t<li data-start=\"5936\" data-end=\"5975\">\r\n<p data-start=\"5938\" data-end=\"5975\">\u0130zleme i\u00e7in uzaktan alarm kontaklar\u0131.<\/p>\r\n<\/li>\r\n \t<li data-start=\"5976\" data-end=\"6019\">\r\n<p data-start=\"5978\" data-end=\"6019\">Termal ba\u011flant\u0131 kesme ve g\u00f6rsel g\u00f6stergeler.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h2 data-start=\"6026\" data-end=\"6076\">Tip 2 a\u015f\u0131r\u0131 gerilim koruma cihaz\u0131 nas\u0131l kurulur<\/h2>\r\n<a href=\"https:\/\/www.britecelectric.com\/tr\/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\" height=\"615\" \/><\/a>\r\n<p data-start=\"6078\" data-end=\"6144\"><strong data-start=\"6078\" data-end=\"6144\">Saha m\u00fchendisli\u011fi deneyiminden elde edilen en iyi kurulum uygulamalar\u0131:<\/strong><\/p>\r\n\r\n<ol data-start=\"6145\" data-end=\"7145\">\r\n \t<li data-start=\"6145\" data-end=\"6266\">\r\n<p data-start=\"6148\" data-end=\"6266\"><strong data-start=\"6148\" data-end=\"6160\">Konum<\/strong> \u2014 Ana da\u011f\u0131t\u0131m panosu baralar\u0131na veya korumak istedi\u011finiz ekipmana m\u00fcmk\u00fcn oldu\u011funca yak\u0131n monte edin.<\/p>\r\n<\/li>\r\n \t<li data-start=\"6267\" data-end=\"6362\">\r\n<p data-start=\"6270\" data-end=\"6362\"><strong data-start=\"6270\" data-end=\"6293\">Paralel ba\u011flant\u0131<\/strong> \u2014 Tip 2 SPD'ler genellikle g\u00fc\u00e7 kayna\u011f\u0131na paralel olarak ba\u011flan\u0131r.<\/p>\r\n<\/li>\r\n \t<li data-start=\"6363\" data-end=\"6506\">\r\n<p data-start=\"6366\" data-end=\"6506\"><strong data-start=\"6366\" data-end=\"6381\">Kur\u015fun uzunlu\u011fu<\/strong> \u2014 Koruma voltaj\u0131n\u0131n y\u00fckselmesini \u00f6nlemek i\u00e7in faz, n\u00f6tr ve toprak iletkenlerinin toplam uzunlu\u011funu 0,5 m'nin alt\u0131nda tutun.<\/p>\r\n<\/li>\r\n \t<li data-start=\"6507\" data-end=\"6619\">\r\n<p data-start=\"6510\" data-end=\"6619\"><strong data-start=\"6510\" data-end=\"6537\">\u0130letken kesiti<\/strong> \u2014 Tip 2 i\u00e7in en az 6 mm\u00b2 bak\u0131r; Daha y\u00fcksek kapasiteli cihazlar i\u00e7in daha b\u00fcy\u00fck boyutlar.<\/p>\r\n<\/li>\r\n \t<li data-start=\"6620\" data-end=\"6716\">\r\n<p data-start=\"6623\" data-end=\"6716\"><strong data-start=\"6623\" data-end=\"6635\">Topraklama<\/strong> \u2014 En k\u0131sa yol ile do\u011frudan ana e\u015fpotansiyel ku\u015faklama \u00e7ubu\u011funa ba\u011flay\u0131n.<\/p>\r\n<\/li>\r\n \t<li data-start=\"6717\" data-end=\"6840\">\r\n<p data-start=\"6720\" data-end=\"6840\"><strong data-start=\"6720\" data-end=\"6746\">A\u015f\u0131r\u0131 ak\u0131m korumas\u0131<\/strong> \u2014 Use fuses or circuit breakers sized according to the SPD's maximum short-circuit withstand.<\/p>\r\n<\/li>\r\n \t<li data-start=\"6841\" data-end=\"7028\">\r\n<p data-start=\"6844\" data-end=\"7028\"><strong data-start=\"6844\" data-end=\"6880\">Kademeli sistemlerde koordinasyon<\/strong> \u2014 Tip 1 SPD'nin a\u015fa\u011f\u0131 ak\u0131\u015f\u0131na monte edilirse, uygun enerji payla\u015f\u0131m\u0131n\u0131 sa\u011flamak i\u00e7in bir ay\u0131rma mesafesini (&gt;10 m) koruyun veya bir dekuplaj ind\u00fckt\u00f6r\u00fc tak\u0131n.<\/p>\r\n<\/li>\r\n \t<li data-start=\"7029\" data-end=\"7145\">\r\n<p data-start=\"7032\" data-end=\"7145\"><strong data-start=\"7032\" data-end=\"7058\">Sisteme \u00f6zel kablolama<\/strong> \u2014 TT sistemleri i\u00e7in, n\u00f6trden topra\u011fa olan dalgalanmalara kar\u015f\u0131 bir N-PE koruma mod\u00fcl\u00fc ekleyin.<\/p>\r\n<\/li>\r\n<\/ol>\r\n<p data-start=\"7147\" data-end=\"7255\">Bu y\u00f6nergelere uyulmas\u0131, SPD'nin spesifikasyonlara uygun performans g\u00f6stermesini ve elektrik standartlar\u0131yla uyumlu olmas\u0131n\u0131 sa\u011flar.<\/p>\r\n\r\n<h2 data-start=\"7262\" data-end=\"7275\">\u00c7\u00f6z\u00fcm<\/h2>\r\n<p data-start=\"7277\" data-end=\"7508\">A <em><a href=\"https:\/\/www.britecelectric.com\/tr\/product-category\/ac-power-surge-protection\/type-2-surge-protective-device\/\" target=\"_blank\" rel=\"noopener\"><strong data-start=\"7279\" data-end=\"7313\">Tip 2 A\u015f\u0131r\u0131 Gerilim Koruma Cihaz\u0131<\/strong><\/a><\/em> katmanl\u0131 elektriksel korumada hayati bir unsurdur. Y\u0131ld\u0131r\u0131mdan ve dahili anahtarlama olaylar\u0131ndan kaynaklanan art\u0131k dalgalanmalara kar\u015f\u0131 koruma sa\u011flayarak ekipman\u0131n uzun \u00f6m\u00fcrl\u00fc olmas\u0131n\u0131 ve operasyonel stabiliteyi sa\u011flar.<\/p>\r\n<p data-start=\"7510\" data-end=\"7767\">M\u00fchendisler ve sat\u0131n alma y\u00f6neticileri, \u00e7al\u0131\u015fma prensibini, kurulum kurallar\u0131n\u0131 ve se\u00e7im parametrelerini anlayarak sistem gereksinimlerini kar\u015f\u0131layan, IEC\/EN 61643-11 ile uyumlu ve gelecek y\u0131llar boyunca g\u00fcvenilir koruma sa\u011flayan cihazlar\u0131 belirleyebilir.<\/p>\r\n<p data-start=\"7769\" data-end=\"7951\">Do\u011fru tak\u0131ld\u0131\u011f\u0131nda Tip 2 SPD yaln\u0131zca bir bile\u015fen de\u011fildir; elektrik sisteminiz i\u00e7in bir sigorta poli\u00e7esidir. Hakk\u0131nda daha fazla bilgi edinin <strong><em><a class=\"\" href=\"https:\/\/www.britecelectric.com\/tr\/blog\/surge-protection-for-solar-photovoltaic-systems\/\" target=\"_blank\" rel=\"noopener\" data-start=\"1609\" data-end=\"1719\">g\u00fcne\u015f SPD uygulamalar\u0131<\/a><\/em><\/strong> ve do\u011fru olan\u0131 nas\u0131l se\u00e7ece\u011finiz.<\/p>","protected":false},"featured_media":2160,"parent":0,"menu_order":127,"template":"","meta":{"_acf_changed":false},"blog_category":[9],"class_list":["post-2154","blog","type-blog","status-publish","has-post-thumbnail","hentry","blog_category-industry-news"],"acf":{"des":"A Type 2 Surge Protection Device protects electrical systems from residual surges and switching surges. It is installed at the main distribution board. It works with Type 1 and Type 3 SPDs to form layered protection. This blog explains how it works, where to use it, how to choose it, and how to install it.","txt":"<h2 data-start=\"226\" data-end=\"241\">Introduction<\/h2>\r\n<p data-start=\"243\" data-end=\"597\">A <a href=\"https:\/\/www.britecelectric.com\/product-category\/ac-power-surge-protection\/type-2-surge-protective-device\/\"><strong data-start=\"245\" data-end=\"279\">Type 2 Surge Protection Device<\/strong><\/a> (Type 2 SPD) is the backbone of surge protection inside modern electrical systems. Installed at the main distribution board or control cabinet, it acts as the second shield in a layered defense strategy \u2014 catching residual surges left by upstream Type 1 SPDs and suppressing transients generated inside the network.<\/p>\r\n<p data-start=\"599\" data-end=\"986\">These devices protect against 8\/20 \u03bcs impulse currents that occur from lightning-induced surges, switching events, or utility disturbances.<\/p>\r\nTo ensure reliable, long-term protection, engineers and technical buyers need to understand several key aspects of a Type 2 SPD:\r\n<ul>\r\n \t<li><b>Definition:<\/b> What is it?<\/li>\r\n \t<li><b>How it works:<\/b> Its operating principles.<\/li>\r\n \t<li><b>Standards:<\/b> Which regulations does it meet?<\/li>\r\n \t<li><b>Installation and Selection:<\/b> The rules for choosing and installing it correctly.<\/li>\r\n<\/ul>\r\n<h2 data-start=\"993\" data-end=\"1042\">Definition of a Type 2 Surge Protection Device<\/h2>\r\n<p data-start=\"1044\" data-end=\"1268\">According to the <a href=\"https:\/\/webstore.iec.ch\/en\/publication\/65314\" target=\"_blank\" rel=\"noopener\"><em><strong>IEC\/EN 61643-11 standard<\/strong><\/em><\/a>, a **Type 2 SPD** is a Class II device. It is designed for locations that do not have direct lightning strikes. However, these locations still face a risk of strong transient overvoltages..<\/p>\r\n<p data-start=\"1270\" data-end=\"1290\">Key characteristics:<\/p>\r\n\r\n<ul data-start=\"1291\" data-end=\"1618\">\r\n \t<li data-start=\"1291\" data-end=\"1335\">\r\n<p data-start=\"1293\" data-end=\"1335\">Tested with 8\/20 \u03bcs current waveforms.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1336\" data-end=\"1466\">\r\n<p data-start=\"1338\" data-end=\"1466\">Typical nominal discharge current (In) is between 5\u201320 kA, with maximum discharge current (Imax) up to 40\u201380 kA.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1467\" data-end=\"1530\">\r\n<p data-start=\"1469\" data-end=\"1530\">Mounted on the load side of the electrical service panel.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1531\" data-end=\"1618\">\r\n<p data-start=\"1533\" data-end=\"1618\">Protects against both external residual surges and internal switching surges.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"1620\" data-end=\"1802\">In practical application, a Type 2 SPD sits after a Type 1 device and before any downstream Type 3 point-of-use protection, forming part of a multi-stage surge protection system.<\/p>\r\n<p data-start=\"1620\" data-end=\"1802\"><a href=\"https:\/\/www.britecelectric.com\/product-category\/ac-power-surge-protection\/type-2-surge-protective-device\/\" target=\"_blank\" rel=\"noopener\"><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-1024x1024.webp\" alt=\"\" width=\"900\" height=\"900\" \/><\/a><\/p>\r\n\r\n<h2 data-start=\"1809\" data-end=\"1859\">How does a <a href=\"https:\/\/www.britecelectric.com\/product-category\/ac-power-surge-protection\/type-2-surge-protective-device\/\" target=\"_blank\" rel=\"noopener\">Type 2 Surge Protection Device<\/a> work?<\/h2>\r\n<p data-start=\"1861\" data-end=\"2143\">A Type 2 SPD operates on the voltage clamping principle. Under normal voltage, it remains passive. When a transient surge exceeds its maximum continuous operating voltage (Uc), its internal components switch rapidly to a conductive state, shunting excess energy to ground.<\/p>\r\n<p data-start=\"2145\" data-end=\"2176\"><strong data-start=\"2145\" data-end=\"2176\">Typical components include:<\/strong><\/p>\r\n\r\n<ul data-start=\"2177\" data-end=\"2557\">\r\n \t<li data-start=\"2177\" data-end=\"2285\">\r\n<p data-start=\"2179\" data-end=\"2285\"><strong data-start=\"2179\" data-end=\"2210\">MOV (Metal Oxide Varistor):<\/strong> The primary clamping element, absorbing surge energy and reducing voltage.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2286\" data-end=\"2385\">\r\n<p data-start=\"2288\" data-end=\"2385\"><strong data-start=\"2288\" data-end=\"2320\">Hybrid circuits (MOV + GDT):<\/strong> Combine high surge capacity with improved long-term reliability.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2386\" data-end=\"2470\">\r\n<p data-start=\"2388\" data-end=\"2470\"><strong data-start=\"2388\" data-end=\"2418\">Thermal disconnect system:<\/strong> Isolates the SPD at end-of-life to maintain safety.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2471\" data-end=\"2557\">\r\n<p data-start=\"2473\" data-end=\"2557\"><strong data-start=\"2473\" data-end=\"2494\">Status indicator:<\/strong> Visual window or contact output to show operational condition.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"2559\" data-end=\"2582\"><strong data-start=\"2559\" data-end=\"2582\">Operation sequence:<\/strong><\/p>\r\n\r\n<ol data-start=\"2583\" data-end=\"2882\">\r\n \t<li data-start=\"2583\" data-end=\"2645\">\r\n<p data-start=\"2586\" data-end=\"2645\"><strong data-start=\"2586\" data-end=\"2602\">Normal mode:<\/strong> High resistance, no impact on the circuit.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2646\" data-end=\"2699\">\r\n<p data-start=\"2649\" data-end=\"2699\"><strong data-start=\"2649\" data-end=\"2665\">Surge event:<\/strong> Voltage rises above the Uc threshold.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2700\" data-end=\"2819\">\r\n<p data-start=\"2703\" data-end=\"2819\"><strong data-start=\"2703\" data-end=\"2716\">Clamping:<\/strong> SPD diverts surge current to ground, lowering the voltage to a safe Up (voltage protection level).<\/p>\r\n<\/li>\r\n \t<li data-start=\"2820\" data-end=\"2882\">\r\n<p data-start=\"2823\" data-end=\"2882\"><strong data-start=\"2823\" data-end=\"2836\">Recovery:<\/strong> SPD returns to high-resistance standby state.<\/p>\r\n<\/li>\r\n<\/ol>\r\n<h2 data-start=\"2889\" data-end=\"2940\">The function of a Type 2 Surge Protection Device<\/h2>\r\n<p data-start=\"2942\" data-end=\"3106\">The primary role of a surge protection device Type 2 is to limit transient overvoltages to a level that downstream equipment can withstand without damage.<\/p>\r\n<p data-start=\"3108\" data-end=\"3122\">Key functions:<\/p>\r\n\r\n<ul data-start=\"3123\" data-end=\"3659\">\r\n \t<li data-start=\"3123\" data-end=\"3228\">\r\n<p data-start=\"3125\" data-end=\"3228\"><strong data-start=\"3125\" data-end=\"3154\">Residual surge limitation<\/strong> \u2014 reduces voltage after a Type 1 SPD has absorbed the bulk of the energy.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3229\" data-end=\"3356\">\r\n<p data-start=\"3231\" data-end=\"3356\"><strong data-start=\"3231\" data-end=\"3262\">Switching surge suppression<\/strong> \u2014 mitigates transients from motor starts, pump switching, or other inductive load operations.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3357\" data-end=\"3471\">\r\n<p data-start=\"3359\" data-end=\"3471\"><strong data-start=\"3359\" data-end=\"3383\">Equipment protection<\/strong> \u2014 prevents damage to sensitive electronics, PLCs, automation systems, and control gear.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3472\" data-end=\"3544\">\r\n<p data-start=\"3474\" data-end=\"3544\"><strong data-start=\"3474\" data-end=\"3496\">System reliability<\/strong> \u2014 reduces downtime from surge-related failures.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3545\" data-end=\"3659\">\r\n<p data-start=\"3547\" data-end=\"3659\"><strong data-start=\"3547\" data-end=\"3568\">Part of a cascade<\/strong> \u2014 sits between the service entrance protection (Type 1) and point-of-use devices (Type 3).<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h2 data-start=\"3666\" data-end=\"3716\">Applications of Type 2 Surge Protection Devices<\/h2>\r\n<a href=\"https:\/\/www.britecelectric.com\/attachment\/spd-install\/\" rel=\"attachment wp-att-2159\"><img class=\"alignnone size-full wp-image-2159\" src=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2025\/08\/SPD-install.jpg\" alt=\"\" width=\"745\" height=\"609\" \/><\/a>\r\n<p data-start=\"3718\" data-end=\"3747\">Type 2 SPDs are installed in:<\/p>\r\n\r\n<ul data-start=\"3748\" data-end=\"4151\">\r\n \t<li data-start=\"3748\" data-end=\"3810\">\r\n<p data-start=\"3750\" data-end=\"3810\">Industrial facilities with lightning protection systems.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3811\" data-end=\"3891\">\r\n<p data-start=\"3813\" data-end=\"3891\">Commercial buildings to protect HVAC, elevators, lighting, and IT systems.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3892\" data-end=\"3949\">\r\n<p data-start=\"3894\" data-end=\"3949\">Machine control cabinets for industrial automation.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3950\" data-end=\"4034\">\r\n<p data-start=\"3952\" data-end=\"4034\">Renewable energy systems\u2014such as solar PV inverters and wind turbine controls\u2014require robust <a href=\"https:\/\/www.britecelectric.com\/product_category\/pv-surge-protection-type-2\/\" target=\"_blank\" rel=\"noopener\">surge protection<\/a> (see our <strong><em><a class=\"\" href=\"https:\/\/www.britecelectric.com\/blog\/solar-surge-protection-devices-selection-guide\/\" target=\"_blank\" rel=\"noopener\" data-start=\"201\" data-end=\"334\">Solar Surge Protection Devices Selection Guide<\/a><\/em><\/strong> and <strong><em><a class=\"\" href=\"https:\/\/www.britecelectric.com\/blog\/surge-protection-for-solar-photovoltaic-systems\/\" target=\"_blank\" rel=\"noopener\" data-start=\"339\" data-end=\"474\">Surge Protection for Solar Photovoltaic Systems<\/a><\/em><\/strong>).<\/p>\r\n<\/li>\r\n \t<li data-start=\"4035\" data-end=\"4093\">\r\n<p data-start=\"4037\" data-end=\"4093\">Hospitals and data centers where uptime is critical.<\/p>\r\n<\/li>\r\n \t<li data-start=\"4094\" data-end=\"4151\">\r\n<p data-start=\"4096\" data-end=\"4151\">Residential main panels for whole-house protection.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h2 data-start=\"262\" data-end=\"316\">Type 1, Type 2, and Type 3 Surge Protection Devices<\/h2>\r\n<p data-start=\"318\" data-end=\"648\">Surge protection devices have three main types. Each type has a different job in the electrical system. You can read more in our detailed guide here: <em><strong><a class=\"\" href=\"https:\/\/www.britecelectric.com\/blog\/difference-between-type-1-type-2-and-type-3-surge-protective-devices\/\" target=\"_blank\" rel=\"noopener\" data-start=\"468\" data-end=\"647\">Difference Between Type 1, Type 2, and Type 3 Surge Protective Devices<\/a>.<\/strong><\/em><\/p>\r\n\r\n<table style=\"width: 60.5183%;\">\r\n<tbody>\r\n<tr>\r\n<td style=\"width: 20.4466%;\" width=\"142\"><strong><b>Feature<\/b><\/strong><\/td>\r\n<td style=\"width: 25.0372%;\" width=\"142\"><strong><b>Type 1 SPD<\/b><\/strong><\/td>\r\n<td style=\"width: 28.1389%;\" width=\"142\"><strong><b>Type 2 SPD<\/b><\/strong><\/td>\r\n<td style=\"width: 58.2638%;\" width=\"142\"><strong><b>Type 3 SPD<\/b><\/strong><\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"width: 20.4466%;\" width=\"142\">Location<\/td>\r\n<td style=\"width: 25.0372%;\" width=\"142\">Installed at the service entrance.<\/td>\r\n<td style=\"width: 28.1389%;\" width=\"142\">Installed at the main distribution board.<\/td>\r\n<td style=\"width: 58.2638%;\" width=\"142\">Installed close to sensitive loads.<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"width: 20.4466%;\" width=\"142\">Test waveform<\/td>\r\n<td style=\"width: 25.0372%;\" width=\"142\">Tested with 10\/350 \u03bcs lightning impulse.<\/td>\r\n<td style=\"width: 28.1389%;\" width=\"142\">Tested with 8\/20 \u03bcs surge current.<\/td>\r\n<td style=\"width: 58.2638%;\" width=\"142\">Tested with 1.2\/50 \u03bcs voltage + 8\/20 \u03bcs current.<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"width: 20.4466%;\" width=\"142\">Purpose<\/td>\r\n<td style=\"width: 25.0372%;\" width=\"142\">Discharges direct lightning current.<\/td>\r\n<td style=\"width: 28.1389%;\" width=\"142\">Limits residual surges and switching surges.<\/td>\r\n<td style=\"width: 58.2638%;\" width=\"142\">Gives final protection for electronics.<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"width: 20.4466%;\" width=\"142\">Typical Up<\/td>\r\n<td style=\"width: 25.0372%;\" width=\"142\">\u2264 4 kV.<\/td>\r\n<td style=\"width: 28.1389%;\" width=\"142\">\u2264 2.5 kV.<\/td>\r\n<td style=\"width: 58.2638%;\" width=\"142\">\u2264 1.5 kV.<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"width: 20.4466%;\" width=\"142\">Examples<\/td>\r\n<td style=\"width: 25.0372%;\" width=\"142\">Buildings with a lightning protection system (LPS).<\/td>\r\n<td style=\"width: 28.1389%;\" width=\"142\">Control panels and sub-distribution boards.<\/td>\r\n<td style=\"width: 58.2638%;\" width=\"142\">IT equipment and home electronics.<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<p data-start=\"1409\" data-end=\"1423\"><strong data-start=\"1409\" data-end=\"1421\">Summary:<\/strong><\/p>\r\n\r\n<ul data-start=\"1424\" data-end=\"1706\">\r\n \t<li data-start=\"1424\" data-end=\"1494\">\r\n<p data-start=\"1426\" data-end=\"1494\"><strong data-start=\"1426\" data-end=\"1440\">Type 1 SPD<\/strong> stops most of the high-energy surge from lightning.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1495\" data-end=\"1610\">\r\n<p data-start=\"1497\" data-end=\"1610\"><strong data-start=\"1497\" data-end=\"1511\">Type 2 SPD<\/strong> is the middle line of defense. It reduces remaining surge voltage and controls switching surges.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1611\" data-end=\"1706\">\r\n<p data-start=\"1613\" data-end=\"1706\"><strong data-start=\"1613\" data-end=\"1627\">Type 3 SPD<\/strong> is the last step. It protects sensitive electronics from small, fast surges.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h2 data-start=\"4715\" data-end=\"4766\">How to select the right surge protection device?<\/h2>\r\n<p data-start=\"4768\" data-end=\"4922\">When choosing the best Type 2 surge protection device, selection should be based on system compatibility, surge risk level, and equipment sensitivity.<\/p>\r\n<p data-start=\"4924\" data-end=\"5057\"><strong data-start=\"4924\" data-end=\"4976\">1. Match system voltage and earthing arrangement<\/strong><br data-start=\"4976\" data-end=\"4979\" \/>Different systems \u2014 TT, TN-S, TN-C, IT \u2014 require different SPD configurations:<\/p>\r\n\r\n<ul data-start=\"5058\" data-end=\"5212\">\r\n \t<li data-start=\"5058\" data-end=\"5104\">\r\n<p data-start=\"5060\" data-end=\"5104\"><strong data-start=\"5060\" data-end=\"5066\">4P<\/strong> (all-pole protection) for TN systems.<\/p>\r\n<\/li>\r\n \t<li data-start=\"5105\" data-end=\"5212\">\r\n<p data-start=\"5107\" data-end=\"5212\"><strong data-start=\"5107\" data-end=\"5114\">3+1<\/strong> configuration (L-N protection plus N-PE module) for TT systems to handle N-PE overvoltage events.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"5214\" data-end=\"5404\"><strong data-start=\"5214\" data-end=\"5272\">2. Determine Uc (Maximum Continuous Operating Voltage)<\/strong><br data-start=\"5272\" data-end=\"5275\" \/>Uc should be slightly above the nominal system voltage to prevent unnecessary triggering but low enough for effective protection.<\/p>\r\n<p data-start=\"5406\" data-end=\"5449\"><strong data-start=\"5406\" data-end=\"5447\">3. Check discharge current capability<\/strong><\/p>\r\n\r\n<ul data-start=\"5450\" data-end=\"5570\">\r\n \t<li data-start=\"5450\" data-end=\"5496\">\r\n<p data-start=\"5452\" data-end=\"5496\"><strong data-start=\"5452\" data-end=\"5487\">Nominal discharge current (In):<\/strong> 5\u201320 kA.<\/p>\r\n<\/li>\r\n \t<li data-start=\"5497\" data-end=\"5570\">\r\n<p data-start=\"5499\" data-end=\"5570\"><strong data-start=\"5499\" data-end=\"5536\">Maximum discharge current (Imax):<\/strong> 20\u201380 kA depending on risk level.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"5572\" data-end=\"5721\"><strong data-start=\"5572\" data-end=\"5608\">4. Voltage protection level (Up)<\/strong><br data-start=\"5608\" data-end=\"5611\" \/>Lower Up means better protection \u2014 aim for \u2264 2.5 kV for general equipment, \u2264 1.5 kV for sensitive electronics.<\/p>\r\n<p data-start=\"5723\" data-end=\"5862\"><strong data-start=\"5723\" data-end=\"5767\">5. Temporary overvoltage (TOV) withstand<\/strong><br data-start=\"5767\" data-end=\"5770\" \/>Ensure the SPD can survive temporary overvoltage conditions from faults or switching events.<\/p>\r\n<p data-start=\"5864\" data-end=\"5892\"><strong data-start=\"5864\" data-end=\"5890\">6. Additional features<\/strong><\/p>\r\n\r\n<ul data-start=\"5893\" data-end=\"6019\">\r\n \t<li data-start=\"5893\" data-end=\"5935\">\r\n<p data-start=\"5895\" data-end=\"5935\">Pluggable modules for quick maintenance.<\/p>\r\n<\/li>\r\n \t<li data-start=\"5936\" data-end=\"5975\">\r\n<p data-start=\"5938\" data-end=\"5975\">Remote alarm contacts for monitoring.<\/p>\r\n<\/li>\r\n \t<li data-start=\"5976\" data-end=\"6019\">\r\n<p data-start=\"5978\" data-end=\"6019\">Thermal disconnect and visual indicators.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h2 data-start=\"6026\" data-end=\"6076\">How to install a Type 2 surge protection device<\/h2>\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\" height=\"615\" \/><\/a>\r\n<p data-start=\"6078\" data-end=\"6144\"><strong data-start=\"6078\" data-end=\"6144\">Installation best practices from field engineering experience:<\/strong><\/p>\r\n\r\n<ol data-start=\"6145\" data-end=\"7145\">\r\n \t<li data-start=\"6145\" data-end=\"6266\">\r\n<p data-start=\"6148\" data-end=\"6266\"><strong data-start=\"6148\" data-end=\"6160\">Location<\/strong> \u2014 Mount as close as possible to the main distribution board busbars or the equipment you want to protect.<\/p>\r\n<\/li>\r\n \t<li data-start=\"6267\" data-end=\"6362\">\r\n<p data-start=\"6270\" data-end=\"6362\"><strong data-start=\"6270\" data-end=\"6293\">Parallel connection<\/strong> \u2014 Type 2 SPDs are usually connected in parallel to the power supply.<\/p>\r\n<\/li>\r\n \t<li data-start=\"6363\" data-end=\"6506\">\r\n<p data-start=\"6366\" data-end=\"6506\"><strong data-start=\"6366\" data-end=\"6381\">Lead length<\/strong> \u2014 Keep the combined length of phase, neutral, and ground conductors under 0.5 m to avoid raising the protection voltage.<\/p>\r\n<\/li>\r\n \t<li data-start=\"6507\" data-end=\"6619\">\r\n<p data-start=\"6510\" data-end=\"6619\"><strong data-start=\"6510\" data-end=\"6537\">Conductor cross-section<\/strong> \u2014 At least 6 mm\u00b2 copper for Type 2; larger sizes for higher-capacity devices.<\/p>\r\n<\/li>\r\n \t<li data-start=\"6620\" data-end=\"6716\">\r\n<p data-start=\"6623\" data-end=\"6716\"><strong data-start=\"6623\" data-end=\"6635\">Earthing<\/strong> \u2014 Connect directly to the main equipotential bonding bar with the shortest path.<\/p>\r\n<\/li>\r\n \t<li data-start=\"6717\" data-end=\"6840\">\r\n<p data-start=\"6720\" data-end=\"6840\"><strong data-start=\"6720\" data-end=\"6746\">Overcurrent protection<\/strong> \u2014 Use fuses or circuit breakers sized according to the SPD's maximum short-circuit withstand.<\/p>\r\n<\/li>\r\n \t<li data-start=\"6841\" data-end=\"7028\">\r\n<p data-start=\"6844\" data-end=\"7028\"><strong data-start=\"6844\" data-end=\"6880\">Coordination in cascaded systems<\/strong> \u2014 If installed downstream of a Type 1 SPD, maintain a separation distance (&gt;10 m) or install a decoupling inductor to ensure proper energy sharing.<\/p>\r\n<\/li>\r\n \t<li data-start=\"7029\" data-end=\"7145\">\r\n<p data-start=\"7032\" data-end=\"7145\"><strong data-start=\"7032\" data-end=\"7058\">System-specific wiring<\/strong> \u2014 For TT systems, include an N-PE protection module to handle neutral-to-earth surges.<\/p>\r\n<\/li>\r\n<\/ol>\r\n<p data-start=\"7147\" data-end=\"7255\">Following these guidelines ensures the SPD performs to specification and complies with electrical standards.<\/p>\r\n\r\n<h2 data-start=\"7262\" data-end=\"7275\">Conclusion<\/h2>\r\n<p data-start=\"7277\" data-end=\"7508\">A <em><a href=\"https:\/\/www.britecelectric.com\/product-category\/ac-power-surge-protection\/type-2-surge-protective-device\/\" target=\"_blank\" rel=\"noopener\"><strong data-start=\"7279\" data-end=\"7313\">Type 2 Surge Protection Device<\/strong><\/a><\/em> is a vital element in layered electrical protection. It safeguards against residual surges from lightning and internal switching events, ensuring equipment longevity and operational stability.<\/p>\r\n<p data-start=\"7510\" data-end=\"7767\">By understanding its working principle, installation rules, and selection parameters, engineers and procurement managers can specify devices that meet system requirements, comply with IEC\/EN 61643-11, and deliver reliable protection for years to come.<\/p>\r\n<p data-start=\"7769\" data-end=\"7951\">Correctly installed, a Type 2 SPD is not just a component \u2014 it\u2019s an insurance policy for your electrical system. Learn more about <strong><em><a class=\"\" href=\"https:\/\/www.britecelectric.com\/blog\/surge-protection-for-solar-photovoltaic-systems\/\" target=\"_blank\" rel=\"noopener\" data-start=\"1609\" data-end=\"1719\">solar SPD applications<\/a><\/em><\/strong> and how to choose the right one.<\/p>"},"_links":{"self":[{"href":"https:\/\/www.britecelectric.com\/tr\/wp-json\/wp\/v2\/blog\/2154","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\/2160"}],"wp:attachment":[{"href":"https:\/\/www.britecelectric.com\/tr\/wp-json\/wp\/v2\/media?parent=2154"}],"wp:term":[{"taxonomy":"blog_category","embeddable":true,"href":"https:\/\/www.britecelectric.com\/tr\/wp-json\/wp\/v2\/blog_category?post=2154"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}