{"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\/hu\/blog\/what-is-a-type-2-surge-protection-device\/","title":{"rendered":"Mi az a 2-es t\u00edpus\u00fa t\u00falfesz\u00fclts\u00e9g-v\u00e9delmi eszk\u00f6z?"},"content":{"rendered":"<h2 data-start=\"226\" data-end=\"241\">Bevezet\u00e9s<\/h2>\r\n<p data-start=\"243\" data-end=\"597\">A <a href=\"https:\/\/www.britecelectric.com\/hu\/product-category\/ac-power-surge-protection\/type-2-surge-protective-device\/\"><strong data-start=\"245\" data-end=\"279\">2-es t\u00edpus\u00fa t\u00falfesz\u00fclts\u00e9g-v\u00e9delmi eszk\u00f6z<\/strong><\/a> (2. t\u00edpus\u00fa SPD) a t\u00falfesz\u00fclts\u00e9g-v\u00e9delem gerince a modern elektromos rendszerekben. A f\u0151 eloszt\u00f3t\u00e1bl\u00e1ra vagy a vez\u00e9rl\u0151szekr\u00e9nyre szerelve a r\u00e9teges v\u00e9delmi strat\u00e9gia m\u00e1sodik pajzsak\u00e9nt m\u0171k\u00f6dik \u2013 felfogja az upstream 1-es t\u00edpus\u00fa SPD-k \u00e1ltal hagyott marad\u00e9k t\u00falfesz\u00fclts\u00e9geket, \u00e9s elnyomja a h\u00e1l\u00f3zaton bel\u00fcl gener\u00e1lt tranzienseket.<\/p>\r\n<p data-start=\"599\" data-end=\"986\">Ezek az eszk\u00f6z\u00f6k v\u00e9denek a 8\/20 \u03bcs-os impulzus\u00e1ramok ellen, amelyek vill\u00e1ml\u00e1s okozta t\u00falfesz\u00fclts\u00e9gek, kapcsol\u00e1si esem\u00e9nyek vagy k\u00f6z\u00fczemi zavarok miatt l\u00e9pnek fel.<\/p>\r\nA megb\u00edzhat\u00f3, hossz\u00fa t\u00e1v\u00fa v\u00e9delem biztos\u00edt\u00e1sa \u00e9rdek\u00e9ben a m\u00e9rn\u00f6k\u00f6knek \u00e9s a m\u0171szaki v\u00e1s\u00e1rl\u00f3knak meg kell \u00e9rteni\u00fck a 2-es t\u00edpus\u00fa SPD sz\u00e1mos kulcsfontoss\u00e1g\u00fa szempontj\u00e1t:\r\n<ul>\r\n \t<li><b>Meghat\u00e1roz\u00e1s:<\/b> Mi az?<\/li>\r\n \t<li><b>Hogyan m\u0171k\u00f6dik:<\/b> M\u0171k\u00f6d\u00e9si elvei.<\/li>\r\n \t<li><b>Szabv\u00e1nyok:<\/b> Milyen el\u0151\u00edr\u00e1soknak felel meg?<\/li>\r\n \t<li><b>Telep\u00edt\u00e9s \u00e9s kiv\u00e1laszt\u00e1s:<\/b> A helyes kiv\u00e1laszt\u00e1s\u00e1nak \u00e9s telep\u00edt\u00e9s\u00e9nek szab\u00e1lyai.<\/li>\r\n<\/ul>\r\n<h2 data-start=\"993\" data-end=\"1042\">A 2-es t\u00edpus\u00fa t\u00falfesz\u00fclts\u00e9g-v\u00e9delmi eszk\u00f6z meghat\u00e1roz\u00e1sa<\/h2>\r\n<p data-start=\"1044\" data-end=\"1268\">szerint a <a href=\"https:\/\/webstore.iec.ch\/en\/publication\/65314\" target=\"_blank\" rel=\"noopener\"><em><strong>IEC\/EN 61643-11 szabv\u00e1ny<\/strong><\/em><\/a>, a **2-es t\u00edpus\u00fa SPD** II. oszt\u00e1ly\u00fa eszk\u00f6z. Olyan helyekre tervezt\u00e9k, ahol nincs k\u00f6zvetlen vill\u00e1mcsap\u00e1s. Ezeken a helyeken azonban tov\u00e1bbra is fenn\u00e1ll az er\u0151s tranziens t\u00falfesz\u00fclts\u00e9g vesz\u00e9lye.<\/p>\r\n<p data-start=\"1270\" data-end=\"1290\">F\u0151bb jellemz\u0151k:<\/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 \u00e1ram hull\u00e1mform\u00e1ival tesztelve.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1336\" data-end=\"1466\">\r\n<p data-start=\"1338\" data-end=\"1466\">A tipikus n\u00e9vleges kis\u00fcl\u00e9si \u00e1ram (In) 5-20 kA k\u00f6z\u00f6tt van, a maxim\u00e1lis kis\u00fcl\u00e9si \u00e1ram (Imax) pedig 40-80 kA.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1467\" data-end=\"1530\">\r\n<p data-start=\"1469\" data-end=\"1530\">Az elektromos szervizpanel terhel\u00e9si oldal\u00e1ra szerelve.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1531\" data-end=\"1618\">\r\n<p data-start=\"1533\" data-end=\"1618\">V\u00e9delmet ny\u00fajt mind a k\u00fcls\u0151 marad\u00e9k t\u00falfesz\u00fclts\u00e9gek, mind a bels\u0151 kapcsol\u00e1si t\u00falfesz\u00fclts\u00e9gek ellen.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"1620\" data-end=\"1802\">A gyakorlati alkalmaz\u00e1sban a 2-es t\u00edpus\u00fa SPD egy 1-es t\u00edpus\u00fa eszk\u00f6z ut\u00e1n \u00e9s b\u00e1rmely k\u00e9s\u0151bbi, 3-as t\u00edpus\u00fa haszn\u00e1lati pont v\u00e9delem el\u0151tt helyezkedik el, \u00e9s egy t\u00f6bbl\u00e9pcs\u0151s t\u00falfesz\u00fclts\u00e9g-v\u00e9delmi rendszer r\u00e9sz\u00e9t k\u00e9pezi.<\/p>\r\n<p data-start=\"1620\" data-end=\"1802\"><a href=\"https:\/\/www.britecelectric.com\/hu\/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\">Hogyan m\u0171k\u00f6dik a <a href=\"https:\/\/www.britecelectric.com\/hu\/product-category\/ac-power-surge-protection\/type-2-surge-protective-device\/\" target=\"_blank\" rel=\"noopener\">2-es t\u00edpus\u00fa t\u00falfesz\u00fclts\u00e9g-v\u00e9delmi eszk\u00f6z<\/a> munka?<\/h2>\r\n<p data-start=\"1861\" data-end=\"2143\">A 2-es t\u00edpus\u00fa SPD a fesz\u00fclts\u00e9gr\u00f6gz\u00edt\u00e9s elv\u00e9n m\u0171k\u00f6dik. Norm\u00e1l fesz\u00fclts\u00e9g alatt passz\u00edv marad. Ha egy tranziens t\u00falfesz\u00fclts\u00e9g meghaladja a maxim\u00e1lis folyamatos \u00fczemi fesz\u00fclts\u00e9get (Uc), bels\u0151 alkatr\u00e9szei gyorsan vezet\u0151k\u00e9pes \u00e1llapotba kapcsolnak, \u00e9s a felesleges energi\u00e1t a f\u00f6ldre ir\u00e1ny\u00edtj\u00e1k.<\/p>\r\n<p data-start=\"2145\" data-end=\"2176\"><strong data-start=\"2145\" data-end=\"2176\">A tipikus \u00f6sszetev\u0151k a k\u00f6vetkez\u0151k:<\/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 (f\u00e9moxid-varisztor):<\/strong> Az els\u0151dleges szor\u00edt\u00f3elem, amely elnyeli a t\u00falfesz\u00fclts\u00e9get \u00e9s cs\u00f6kkenti a fesz\u00fclts\u00e9get.<\/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\">Hibrid \u00e1ramk\u00f6r\u00f6k (MOV + GDT):<\/strong> Kombin\u00e1lja a nagy t\u00falfesz\u00fclts\u00e9g-kapacit\u00e1st a megn\u00f6velt hossz\u00fa t\u00e1v\u00fa megb\u00edzhat\u00f3s\u00e1ggal.<\/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\">Termikus lev\u00e1laszt\u00f3 rendszer:<\/strong> Elszigeteli az SPD-t az \u00e9lettartam v\u00e9g\u00e9n a biztons\u00e1g meg\u0151rz\u00e9se \u00e9rdek\u00e9ben.<\/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\">\u00c1llapotjelz\u0151:<\/strong> Vizu\u00e1lis ablak vagy \u00e9rintkez\u0151 kimenet az \u00fczem\u00e1llapot megjelen\u00edt\u00e9s\u00e9hez.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"2559\" data-end=\"2582\"><strong data-start=\"2559\" data-end=\"2582\">M\u0171veletek sorrendje:<\/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\">Norm\u00e1l m\u00f3d:<\/strong> Nagy ellen\u00e1ll\u00e1s, nincs hat\u00e1ssal az \u00e1ramk\u00f6rre.<\/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\">T\u00falfesz\u00fclts\u00e9g esem\u00e9ny:<\/strong> A fesz\u00fclts\u00e9g az Uc k\u00fcsz\u00f6b f\u00f6l\u00e9 emelkedik.<\/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\">Befog\u00e1s:<\/strong> Az SPD a t\u00falfesz\u00fclts\u00e9g-\u00e1ramot a f\u00f6ldre tereli, \u00edgy a fesz\u00fclts\u00e9get biztons\u00e1gos Up-ra (fesz\u00fclts\u00e9gv\u00e9delmi szintre) cs\u00f6kkenti.<\/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\">Helyre\u00e1ll\u00edt\u00e1s:<\/strong> Az SPD visszat\u00e9r nagy ellen\u00e1ll\u00e1s\u00fa k\u00e9szenl\u00e9ti \u00e1llapotba.<\/p>\r\n<\/li>\r\n<\/ol>\r\n<h2 data-start=\"2889\" data-end=\"2940\">A 2-es t\u00edpus\u00fa t\u00falfesz\u00fclts\u00e9g-v\u00e9delmi eszk\u00f6z funkci\u00f3ja<\/h2>\r\n<p data-start=\"2942\" data-end=\"3106\">A 2-es t\u00edpus\u00fa t\u00falfesz\u00fclts\u00e9g-v\u00e9delmi k\u00e9sz\u00fcl\u00e9k els\u0151dleges feladata, hogy a tranziens t\u00falfesz\u00fclts\u00e9geket olyan szintre korl\u00e1tozza, amelyet a k\u00e9s\u0151bbi berendez\u00e9sek k\u00e1rosod\u00e1s n\u00e9lk\u00fcl elviselnek.<\/p>\r\n<p data-start=\"3108\" data-end=\"3122\">F\u0151bb funkci\u00f3k:<\/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\">A marad\u00e9k t\u00falfesz\u00fclts\u00e9g korl\u00e1toz\u00e1sa<\/strong> \u2014 cs\u00f6kkenti a fesz\u00fclts\u00e9get, miut\u00e1n az 1. t\u00edpus\u00fa SPD elnyeli az energia nagy r\u00e9sz\u00e9t.<\/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\">Kapcsol\u00e1si t\u00falfesz\u00fclts\u00e9g-elnyom\u00e1s<\/strong> \u2014 cs\u00f6kkenti a motorind\u00edt\u00e1sb\u00f3l, szivatty\u00fakapcsol\u00e1sb\u00f3l vagy m\u00e1s indukt\u00edv terhel\u00e9si m\u0171veletekb\u0151l sz\u00e1rmaz\u00f3 tranzienseket.<\/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\">Berendez\u00e9sv\u00e9delem<\/strong> \u2014 megakad\u00e1lyozza az \u00e9rz\u00e9keny elektronik\u00e1k, PLC-k, automatiz\u00e1l\u00e1si rendszerek \u00e9s vez\u00e9rl\u0151berendez\u00e9sek k\u00e1rosod\u00e1s\u00e1t.<\/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\">A rendszer megb\u00edzhat\u00f3s\u00e1ga<\/strong> \u2013 cs\u00f6kkenti a t\u00falfesz\u00fclts\u00e9g okozta meghib\u00e1sod\u00e1sok miatti \u00e1ll\u00e1sid\u0151t.<\/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\">Egy kaszk\u00e1d r\u00e9sze<\/strong> \u2014 a szolg\u00e1lati bej\u00e1rati v\u00e9delem (1. t\u00edpus) \u00e9s a felhaszn\u00e1l\u00e1si pontok (3. t\u00edpus) k\u00f6z\u00f6tt helyezkedik el.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h2 data-start=\"3666\" data-end=\"3716\">A 2-es t\u00edpus\u00fa t\u00falfesz\u00fclts\u00e9g-v\u00e9delmi eszk\u00f6z\u00f6k alkalmaz\u00e1sai<\/h2>\r\n<a href=\"https:\/\/www.britecelectric.com\/hu\/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\">A 2-es t\u00edpus\u00fa SPD-k telep\u00edtve vannak:<\/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\">Ipari l\u00e9tes\u00edtm\u00e9nyek vill\u00e1mv\u00e9delmi rendszerekkel.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3811\" data-end=\"3891\">\r\n<p data-start=\"3813\" data-end=\"3891\">Kereskedelmi \u00e9p\u00fcletek a HVAC, a liftek, a vil\u00e1g\u00edt\u00e1s \u00e9s az informatikai rendszerek v\u00e9delm\u00e9re.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3892\" data-end=\"3949\">\r\n<p data-start=\"3894\" data-end=\"3949\">G\u00e9pvez\u00e9rl\u0151 szekr\u00e9nyek ipari automatiz\u00e1l\u00e1shoz.<\/p>\r\n<\/li>\r\n \t<li data-start=\"3950\" data-end=\"4034\">\r\n<p data-start=\"3952\" data-end=\"4034\">A meg\u00fajul\u00f3 energiarendszerek \u2013 mint p\u00e9ld\u00e1ul a napelemes inverterek \u00e9s a sz\u00e9lturbin\u00e1k vez\u00e9rl\u00e9sei \u2013 robusztuss\u00e1got ig\u00e9nyelnek <a href=\"https:\/\/www.britecelectric.com\/hu\/product_category\/pv-surge-protection-type-2\/\" target=\"_blank\" rel=\"noopener\">t\u00falfesz\u00fclts\u00e9g elleni v\u00e9delem<\/a> (l\u00e1sd a mi <strong><em><a class=\"\" href=\"https:\/\/www.britecelectric.com\/hu\/blog\/solar-surge-protection-devices-selection-guide\/\" target=\"_blank\" rel=\"noopener\" data-start=\"201\" data-end=\"334\">\u00datmutat\u00f3 a szol\u00e1ris t\u00falfesz\u00fclts\u00e9g-v\u00e9delmi eszk\u00f6z\u00f6k kiv\u00e1laszt\u00e1s\u00e1hoz<\/a><\/em><\/strong> \u00e9s <strong><em><a class=\"\" href=\"https:\/\/www.britecelectric.com\/hu\/blog\/surge-protection-for-solar-photovoltaic-systems\/\" target=\"_blank\" rel=\"noopener\" data-start=\"339\" data-end=\"474\">T\u00falfesz\u00fclts\u00e9g elleni v\u00e9delem fotovoltaikus napelemes rendszerekhez<\/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\">K\u00f3rh\u00e1zak \u00e9s adatk\u00f6zpontok, ahol az \u00fczemid\u0151 kritikus.<\/p>\r\n<\/li>\r\n \t<li data-start=\"4094\" data-end=\"4151\">\r\n<p data-start=\"4096\" data-end=\"4151\">Lakoss\u00e1gi f\u0151panelek az eg\u00e9sz h\u00e1z v\u00e9delm\u00e9re.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h2 data-start=\"262\" data-end=\"316\">1-es, 2-es \u00e9s 3-as t\u00edpus\u00fa t\u00falfesz\u00fclts\u00e9g-v\u00e9delmi eszk\u00f6z\u00f6k<\/h2>\r\n<p data-start=\"318\" data-end=\"648\">A t\u00falfesz\u00fclts\u00e9g-v\u00e9delmi eszk\u00f6z\u00f6knek h\u00e1rom f\u0151 t\u00edpusa van. Mindegyik t\u00edpusnak m\u00e1s-m\u00e1s feladata van az elektromos rendszerben. R\u00e9szletes \u00fatmutat\u00f3nkban itt olvashat b\u0151vebben: <em><strong><a class=\"\" href=\"https:\/\/www.britecelectric.com\/hu\/blog\/difference-between-type-1-type-2-and-type-3-surge-protective-devices\/\" target=\"_blank\" rel=\"noopener\" data-start=\"468\" data-end=\"647\">K\u00fcl\u00f6nbs\u00e9g az 1-es, 2-es \u00e9s 3-as t\u00edpus\u00fa t\u00falfesz\u00fclts\u00e9g-v\u00e9delmi eszk\u00f6z\u00f6k k\u00f6z\u00f6tt<\/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>Funkci\u00f3<\/b><\/strong><\/td>\r\n<td style=\"width: 25.0372%;\" width=\"142\"><strong><b>1. t\u00edpus\u00fa SPD<\/b><\/strong><\/td>\r\n<td style=\"width: 28.1389%;\" width=\"142\"><strong><b>2. t\u00edpus\u00fa SPD<\/b><\/strong><\/td>\r\n<td style=\"width: 58.2638%;\" width=\"142\"><strong><b>3. t\u00edpus\u00fa SPD<\/b><\/strong><\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"width: 20.4466%;\" width=\"142\">Elhelyezked\u00e9s<\/td>\r\n<td style=\"width: 25.0372%;\" width=\"142\">A szervizbej\u00e1rathoz szerelve.<\/td>\r\n<td style=\"width: 28.1389%;\" width=\"142\">A f\u0151 eloszt\u00f3t\u00e1bl\u00e1ra szerelve.<\/td>\r\n<td style=\"width: 58.2638%;\" width=\"142\">\u00c9rz\u00e9keny terhel\u00e9sek k\u00f6zel\u00e9be telep\u00edtve.<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"width: 20.4466%;\" width=\"142\">Teszt hull\u00e1mforma<\/td>\r\n<td style=\"width: 25.0372%;\" width=\"142\">10\/350 \u03bcs vill\u00e1mimpulzussal tesztelve.<\/td>\r\n<td style=\"width: 28.1389%;\" width=\"142\">8\/20 \u03bcs t\u00falfesz\u00fclts\u00e9ggel tesztelve.<\/td>\r\n<td style=\"width: 58.2638%;\" width=\"142\">1,2\/50 \u03bcs fesz\u00fclts\u00e9g + 8\/20 \u03bcs \u00e1ramer\u0151ss\u00e9ggel tesztelve.<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"width: 20.4466%;\" width=\"142\">C\u00e9l<\/td>\r\n<td style=\"width: 25.0372%;\" width=\"142\">Kis\u00fcti az egyen\u00e1ramot.<\/td>\r\n<td style=\"width: 28.1389%;\" width=\"142\">Korl\u00e1tozza a marad\u00e9k t\u00falfesz\u00fclts\u00e9geket \u00e9s a kapcsol\u00e1si t\u00falfesz\u00fclts\u00e9geket.<\/td>\r\n<td style=\"width: 58.2638%;\" width=\"142\">V\u00e9gs\u0151 v\u00e9delmet ny\u00fajt az elektronika sz\u00e1m\u00e1ra.<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"width: 20.4466%;\" width=\"142\">Tipikus fel<\/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\">P\u00e9ld\u00e1k<\/td>\r\n<td style=\"width: 25.0372%;\" width=\"142\">Vill\u00e1mv\u00e9delmi rendszerrel (LPS) felszerelt \u00e9p\u00fcletek.<\/td>\r\n<td style=\"width: 28.1389%;\" width=\"142\">Vez\u00e9rl\u0151panelek \u00e9s aleloszt\u00f3 t\u00e1bl\u00e1k.<\/td>\r\n<td style=\"width: 58.2638%;\" width=\"142\">Informatikai berendez\u00e9sek \u00e9s otthoni elektronika.<\/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\">\u00d6sszegz\u00e9s:<\/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\">1. t\u00edpus\u00fa SPD<\/strong> meg\u00e1ll\u00edtja a vill\u00e1mcsap\u00e1s okozta nagy energi\u00e1j\u00fa t\u00falfesz\u00fclts\u00e9g nagy r\u00e9sz\u00e9t.<\/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\">2. t\u00edpus\u00fa SPD<\/strong> a k\u00f6z\u00e9ps\u0151 v\u00e9delmi vonal. Cs\u00f6kkenti a fennmarad\u00f3 t\u00falfesz\u00fclts\u00e9get \u00e9s szab\u00e1lyozza a kapcsol\u00e1si t\u00falfesz\u00fclts\u00e9get.<\/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\">3. t\u00edpus\u00fa SPD<\/strong> az utols\u00f3 l\u00e9p\u00e9s. Megv\u00e9di az \u00e9rz\u00e9keny elektronik\u00e1t a kis, gyors t\u00falfesz\u00fclts\u00e9gekt\u0151l.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h2 data-start=\"4715\" data-end=\"4766\">Hogyan v\u00e1lasszuk ki a megfelel\u0151 t\u00falfesz\u00fclts\u00e9g-v\u00e9delmi k\u00e9sz\u00fcl\u00e9ket?<\/h2>\r\n<p data-start=\"4768\" data-end=\"4922\">A legjobb 2-es t\u00edpus\u00fa t\u00falfesz\u00fclts\u00e9g-v\u00e9delmi eszk\u00f6z kiv\u00e1laszt\u00e1sakor a rendszer kompatibilit\u00e1sa, a t\u00falfesz\u00fclts\u00e9g kock\u00e1zati szintje \u00e9s a berendez\u00e9s \u00e9rz\u00e9kenys\u00e9ge alapj\u00e1n kell kiv\u00e1lasztani.<\/p>\r\n<p data-start=\"4924\" data-end=\"5057\"><strong data-start=\"4924\" data-end=\"4976\">1. Egyezze meg a rendszer fesz\u00fclts\u00e9g\u00e9t \u00e9s a f\u00f6ldel\u00e9s elrendez\u00e9s\u00e9t<\/strong><br data-start=\"4976\" data-end=\"4979\" \/>A k\u00fcl\u00f6nb\u00f6z\u0151 rendszerek \u2013 TT, TN-S, TN-C, IT \u2013 elt\u00e9r\u0151 SPD konfigur\u00e1ci\u00f3t ig\u00e9nyelnek:<\/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> (minden p\u00f3lus\u00fa v\u00e9delem) TN rendszerekhez.<\/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> konfigur\u00e1ci\u00f3 (L-N v\u00e9delem plusz N-PE modul) TT rendszerek sz\u00e1m\u00e1ra az N-PE t\u00falfesz\u00fclts\u00e9gi esem\u00e9nyek kezel\u00e9s\u00e9re.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"5214\" data-end=\"5404\"><strong data-start=\"5214\" data-end=\"5272\">2. Hat\u00e1rozza meg az Uc \u00e9rt\u00e9ket (maxim\u00e1lis folyamatos \u00fczemi fesz\u00fclts\u00e9g)<\/strong><br data-start=\"5272\" data-end=\"5275\" \/>Az Uc-nek valamivel a n\u00e9vleges rendszerfesz\u00fclts\u00e9g felett kell lennie, hogy elker\u00fclje a sz\u00fcks\u00e9gtelen kiold\u00e1st, de el\u00e9g alacsonynak kell lennie a hat\u00e9kony v\u00e9delemhez.<\/p>\r\n<p data-start=\"5406\" data-end=\"5449\"><strong data-start=\"5406\" data-end=\"5447\">3. Ellen\u0151rizze a kis\u00fcl\u00e9si \u00e1ram k\u00e9pess\u00e9g\u00e9t<\/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\">N\u00e9vleges kis\u00fcl\u00e9si \u00e1ram (In):<\/strong> 5-20 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\">Maxim\u00e1lis kis\u00fcl\u00e9si \u00e1ram (Imax):<\/strong> 20-80 kA a kock\u00e1zati szintt\u0151l f\u00fcgg\u0151en.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"5572\" data-end=\"5721\"><strong data-start=\"5572\" data-end=\"5608\">4. Fesz\u00fclts\u00e9gv\u00e9delmi szint (Fel)<\/strong><br data-start=\"5608\" data-end=\"5611\" \/>A Lower Up jobb v\u00e9delmet jelent \u2013 \u200b\u200bc\u00e9l \u2264 2,5 kV az \u00e1ltal\u00e1nos berendez\u00e9sekn\u00e9l, \u2264 1,5 kV az \u00e9rz\u00e9keny elektronik\u00e1kn\u00e1l.<\/p>\r\n<p data-start=\"5723\" data-end=\"5862\"><strong data-start=\"5723\" data-end=\"5767\">5. Ideiglenes t\u00falfesz\u00fclts\u00e9g (TOV) ellen\u00e1ll\u00e1s<\/strong><br data-start=\"5767\" data-end=\"5770\" \/>Gy\u0151z\u0151dj\u00f6n meg arr\u00f3l, hogy az SPD t\u00fal\u00e9li a hib\u00e1kb\u00f3l vagy kapcsol\u00e1si esem\u00e9nyekb\u0151l sz\u00e1rmaz\u00f3 \u00e1tmeneti t\u00falfesz\u00fclts\u00e9get.<\/p>\r\n<p data-start=\"5864\" data-end=\"5892\"><strong data-start=\"5864\" data-end=\"5890\">6. Tov\u00e1bbi szolg\u00e1ltat\u00e1sok<\/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\">Csatlakoztathat\u00f3 modulok a gyors karbantart\u00e1s\u00e9rt.<\/p>\r\n<\/li>\r\n \t<li data-start=\"5936\" data-end=\"5975\">\r\n<p data-start=\"5938\" data-end=\"5975\">T\u00e1voli riaszt\u00e1si \u00e9rintkez\u0151k fel\u00fcgyelethez.<\/p>\r\n<\/li>\r\n \t<li data-start=\"5976\" data-end=\"6019\">\r\n<p data-start=\"5978\" data-end=\"6019\">Termikus lev\u00e1laszt\u00e1s \u00e9s vizu\u00e1lis jelz\u0151k.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<h2 data-start=\"6026\" data-end=\"6076\">2-es t\u00edpus\u00fa t\u00falfesz\u00fclts\u00e9g-v\u00e9delmi k\u00e9sz\u00fcl\u00e9k felszerel\u00e9se<\/h2>\r\n<a href=\"https:\/\/www.britecelectric.com\/hu\/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\">Helysz\u00edni m\u00e9rn\u00f6ki tapasztalatb\u00f3l sz\u00e1rmaz\u00f3 bev\u00e1lt telep\u00edt\u00e9si gyakorlatok:<\/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\">Elhelyezked\u00e9s<\/strong> \u2014 Szerelje fel a lehet\u0151 legk\u00f6zelebb a f\u0151eloszt\u00f3 gy\u0171jt\u0151s\u00ednekhez vagy a v\u00e9deni k\u00edv\u00e1nt berendez\u00e9shez.<\/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\">P\u00e1rhuzamos kapcsolat<\/strong> \u2014 A 2-es t\u00edpus\u00fa SPD-ket \u00e1ltal\u00e1ban p\u00e1rhuzamosan k\u00f6tik a t\u00e1pegys\u00e9ggel.<\/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\">Vezet\u00e9k hossza<\/strong> \u2014 A f\u00e1zis-, nulla- \u00e9s f\u00f6ldel\u0151vezet\u00e9kek egy\u00fcttes hossz\u00e1t tartsa 0,5 m alatt, hogy elker\u00fclje a v\u00e9delmi fesz\u00fclts\u00e9g emelked\u00e9s\u00e9t.<\/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\">Vezet\u0151 keresztmetszete<\/strong> \u2014 Legal\u00e1bb 6 mm\u00b2 r\u00e9z a 2. t\u00edpushoz; nagyobb m\u00e9retek nagyobb kapacit\u00e1s\u00fa k\u00e9sz\u00fcl\u00e9kekhez.<\/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\">F\u00f6ldel\u00e9s<\/strong> \u2014 Csatlakoztassa k\u00f6zvetlen\u00fcl a f\u0151 potenci\u00e1lkiegyenl\u00edt\u0151 r\u00fadhoz a legr\u00f6videbb \u00faton.<\/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\">T\u00fal\u00e1ram v\u00e9delem<\/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\">Koordin\u00e1ci\u00f3 l\u00e9pcs\u0151zetes rendszerekben<\/strong> \u2014 Ha az 1-es t\u00edpus\u00fa SPD ut\u00e1n van felszerelve, tartsa be a t\u00e1vols\u00e1got (&gt;10 m), vagy szereljen be egy lev\u00e1laszt\u00f3 tekercset a megfelel\u0151 energiamegoszt\u00e1s biztos\u00edt\u00e1sa \u00e9rdek\u00e9ben.<\/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\">Rendszerspecifikus vezet\u00e9kez\u00e9s<\/strong> \u2014 A TT-rendszerekhez tartalmazzon N-PE v\u00e9delmi modult a semleges-f\u00f6ld k\u00f6z\u00f6tti t\u00falfesz\u00fclts\u00e9g kezel\u00e9s\u00e9re.<\/p>\r\n<\/li>\r\n<\/ol>\r\n<p data-start=\"7147\" data-end=\"7255\">Ezen ir\u00e1nyelvek betart\u00e1sa biztos\u00edtja, hogy az SPD megfeleljen a specifik\u00e1ci\u00f3nak \u00e9s megfelel az elektromos szabv\u00e1nyoknak.<\/p>\r\n\r\n<h2 data-start=\"7262\" data-end=\"7275\">K\u00f6vetkeztet\u00e9s<\/h2>\r\n<p data-start=\"7277\" data-end=\"7508\">A <em><a href=\"https:\/\/www.britecelectric.com\/hu\/product-category\/ac-power-surge-protection\/type-2-surge-protective-device\/\" target=\"_blank\" rel=\"noopener\"><strong data-start=\"7279\" data-end=\"7313\">2-es t\u00edpus\u00fa t\u00falfesz\u00fclts\u00e9g-v\u00e9delmi eszk\u00f6z<\/strong><\/a><\/em> a r\u00e9teges elektromos v\u00e9delem l\u00e9tfontoss\u00e1g\u00fa eleme. V\u00e9delmet ny\u00fajt a vill\u00e1mcsap\u00e1sb\u00f3l \u00e9s a bels\u0151 kapcsol\u00e1si esem\u00e9nyekb\u0151l sz\u00e1rmaz\u00f3 marad\u00e9k t\u00falfesz\u00fclts\u00e9g ellen, biztos\u00edtva a berendez\u00e9s hossz\u00fa \u00e9lettartam\u00e1t \u00e9s m\u0171k\u00f6d\u00e9si stabilit\u00e1s\u00e1t.<\/p>\r\n<p data-start=\"7510\" data-end=\"7767\">A m\u0171k\u00f6d\u00e9si elv, a telep\u00edt\u00e9si szab\u00e1lyok \u00e9s a kiv\u00e1laszt\u00e1si param\u00e9terek meg\u00e9rt\u00e9s\u00e9vel a m\u00e9rn\u00f6k\u00f6k \u00e9s a beszerz\u00e9si menedzserek olyan eszk\u00f6z\u00f6ket hat\u00e1rozhatnak meg, amelyek megfelelnek a rendszerk\u00f6vetelm\u00e9nyeknek, megfelelnek az IEC\/EN 61643-11 szabv\u00e1nynak, \u00e9s megb\u00edzhat\u00f3 v\u00e9delmet ny\u00fajtanak az elk\u00f6vetkez\u0151 \u00e9vekben.<\/p>\r\n<p data-start=\"7769\" data-end=\"7951\">A helyesen telep\u00edtett 2-es t\u00edpus\u00fa SPD nem csak egy alkatr\u00e9sz \u2013 ez egy biztos\u00edt\u00e1si k\u00f6tv\u00e9ny az \u00d6n elektromos rendszer\u00e9re. Tov\u00e1bbi inform\u00e1ci\u00f3: <strong><em><a class=\"\" href=\"https:\/\/www.britecelectric.com\/hu\/blog\/surge-protection-for-solar-photovoltaic-systems\/\" target=\"_blank\" rel=\"noopener\" data-start=\"1609\" data-end=\"1719\">szol\u00e1ris SPD alkalmaz\u00e1sok<\/a><\/em><\/strong> \u00e9s hogyan v\u00e1lasszuk ki a megfelel\u0151t.<\/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\/hu\/wp-json\/wp\/v2\/blog\/2154","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.britecelectric.com\/hu\/wp-json\/wp\/v2\/blog"}],"about":[{"href":"https:\/\/www.britecelectric.com\/hu\/wp-json\/wp\/v2\/types\/blog"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.britecelectric.com\/hu\/wp-json\/wp\/v2\/media\/2160"}],"wp:attachment":[{"href":"https:\/\/www.britecelectric.com\/hu\/wp-json\/wp\/v2\/media?parent=2154"}],"wp:term":[{"taxonomy":"blog_category","embeddable":true,"href":"https:\/\/www.britecelectric.com\/hu\/wp-json\/wp\/v2\/blog_category?post=2154"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}