{"id":2117,"date":"2025-06-21T14:43:49","date_gmt":"2025-06-21T06:43:49","guid":{"rendered":"https:\/\/www.britecelectric.com\/?post_type=blog&#038;p=2117"},"modified":"2025-06-21T14:43:49","modified_gmt":"2025-06-21T06:43:49","slug":"solar-surge-protection-devices-selection-guide","status":"publish","type":"blog","link":"https:\/\/www.britecelectric.com\/hu\/blog\/solar-surge-protection-devices-selection-guide\/","title":{"rendered":"\u00c1tfog\u00f3 \u00fatmutat\u00f3 a szol\u00e1ris t\u00falfesz\u00fclts\u00e9g-v\u00e9delmi eszk\u00f6z\u00f6k (Solar SPD) kiv\u00e1laszt\u00e1s\u00e1hoz"},"content":{"rendered":"<p data-pm-slice=\"1 3 []\">Surge protection is not just a precaution\u2014it's an essential part of a well-designed solar photovoltaic (PV) system. With the increasing adoption of solar energy worldwide, protecting these valuable systems against electrical transients is more critical than ever. This guide will walk you through everything you need to know about Solar Surge Protection Devices (Solar SPDs): what they are, why they matter, and how to choose the right one for your system.<\/p>\r\n\r\n<h2>1. Mik azok a szol\u00e1ris t\u00falfesz\u00fclts\u00e9g-v\u00e9delmi eszk\u00f6z\u00f6k (Solar SPD)?<\/h2>\r\nA Solar Surge Protection Device (Solar SPD) is a protective electrical component designed to divert or absorb transient overvoltage events, such as lightning strikes or switching operations, before they can damage sensitive solar equipment. These devices are installed at key locations in a solar PV system, including at the DC combiner box, photovoltaic inverter, and AC distribution panel.\r\n\r\nSolar SPDs are categorized by waveform response, discharge capacity, and installation location. They typically use components like Metal Oxide Varistors (MOVs), Gas Discharge Tubes (GDTs), and Transient Voltage Suppression (TVS) diodes to protect against overvoltage events.\r\n\r\n<a href=\"https:\/\/www.britecelectric.com\/hu\/attachment\/pv-surge-protector-type-2\/\" target=\"_blank\" rel=\"noopener\"><img class=\"alignnone wp-image-2118\" src=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2025\/06\/PV-Surge-Protector-Type-2-1024x1024.webp\" alt=\"K\u00ednai szol\u00e1ris t\u00falfesz\u00fclts\u00e9g-v\u00e9delmi eszk\u00f6z\u00f6k\" width=\"794\" height=\"794\" \/><\/a>\r\n<h2>2. Mi\u00e9rt van sz\u00fcks\u00e9ge t\u00falfesz\u00fclts\u00e9g elleni v\u00e9delemre?<\/h2>\r\nSurges pose a significant threat to solar systems. Here's why surge protection is a must:\r\n<h3>Vill\u00e1mcsap\u00e1s \u00e9s kapcsol\u00e1si t\u00falfesz\u00fclts\u00e9g kock\u00e1zatai<\/h3>\r\n<ul data-spread=\"false\">\r\n \t<li>A k\u00f6zvetlen vill\u00e1mcsap\u00e1sok nagy energi\u00e1j\u00fa impulzusokat (10\/350 \u00b5s hull\u00e1mforma) fecskendezhetnek k\u00f6zvetlen\u00fcl a PV-t\u00f6mb\u00f6kbe, katasztrof\u00e1lis k\u00e1rokat okozva.<\/li>\r\n \t<li>A k\u00f6zvetett vill\u00e1mcsap\u00e1s vagy elektrom\u00e1gneses csatol\u00e1s (8\/20 \u00b5s hull\u00e1mforma) terjeszti a fesz\u00fclts\u00e9gl\u00f6k\u00e9seket hossz\u00fa k\u00e1beleken kereszt\u00fcl, k\u00e1ros\u00edtva az invertereket, a vez\u00e9rl\u0151ket \u00e9s a fel\u00fcgyeleti rendszereket.<\/li>\r\n \t<li>A h\u00e1l\u00f3zati kapcsol\u00e1si m\u0171veletek fesz\u00fclts\u00e9gtranzienseket okoznak a kondenz\u00e1tortelepekr\u0151l vagy terhel\u00e9scs\u00f6kken\u00e9st, amelyek visszaver\u0151dnek az AC csatlakoz\u00e1son.<\/li>\r\n<\/ul>\r\n<h3>A megb\u00edzhat\u00f3s\u00e1g jav\u00edt\u00e1sa \u00e9s a berendez\u00e9sek \u00e9lettartam\u00e1nak meghosszabb\u00edt\u00e1sa<\/h3>\r\n<ul data-spread=\"false\">\r\n \t<li>A t\u00falfesz\u00fclts\u00e9gek megterhelik a bels\u0151 alkatr\u00e9szeket, m\u00e9g akkor is, ha nem t\u00f6rt\u00e9nik azonnali meghib\u00e1sod\u00e1s.<\/li>\r\n \t<li>Az ism\u00e9tl\u0151d\u0151 tranziensek rontj\u00e1k a szigetel\u00e9st \u00e9s cs\u00f6kkentik a meghib\u00e1sod\u00e1sok k\u00f6z\u00f6tti \u00e1tlagos id\u0151t (MTBF).<\/li>\r\n \t<li>Megfelel\u0151 haszn\u00e1lat\u00e1val <a href=\"https:\/\/www.britecelectric.com\/hu\/product-category\/dc-surge-protector\/\" target=\"_blank\" rel=\"noopener\"><em><strong>DC SPD<\/strong><\/em><\/a> A napelemes napelemes t\u00falfesz\u00fclts\u00e9g-v\u00e9delmet biztos\u00edt, amely \u00e9vekig online \u00e9s hat\u00e9konyan tartja a rendszereket.<\/li>\r\n<\/ul>\r\n<h3>Fokozza az elektromos biztons\u00e1got<\/h3>\r\n<ul data-spread=\"false\">\r\n \t<li>A t\u00falfesz\u00fclts\u00e9g \u00edvhib\u00e1kat, a szigetel\u00e9s meghib\u00e1sod\u00e1s\u00e1t \u00e9s ak\u00e1r t\u00fczet is okozhat.<\/li>\r\n \t<li>A kiv\u00e1l\u00f3 min\u0151s\u00e9g\u0171 Solar Surge Protection Device a t\u00falfesz\u00fclts\u00e9get a csatlakoztatott eszk\u00f6z\u00f6k ellen\u00e1ll\u00f3 k\u00e9pess\u00e9ge alatti szintre korl\u00e1tozza.<\/li>\r\n<\/ul>\r\n<h3>Szabv\u00e1nyoknak val\u00f3 megfelel\u00e9s<\/h3>\r\n<ul data-spread=\"false\">\r\n \t<li>Az UL 1449, IEC 61643-31 \u00e9s IEC 62109 szabv\u00e1nyok SPD oszt\u00e1lyoz\u00e1si, tesztel\u00e9si \u00e9s telep\u00edt\u00e9si k\u00f6vetelm\u00e9nyeket hat\u00e1roznak meg a fotovoltaikus rendszerekre vonatkoz\u00f3an.<\/li>\r\n \t<li>Az NEC 690.7(C) \u00e9s az NFPA 780 szabv\u00e1nyok SPD-t \u00edrnak el\u0151 a fotovoltaikus rendszerekhez, k\u00fcl\u00f6n\u00f6sen a kitett k\u00fclt\u00e9ri ter\u00fcleteken.<\/li>\r\n<\/ul>\r\n<h3>LPZ (vill\u00e1mv\u00e9delmi z\u00f3n\u00e1k) integr\u00e1ci\u00f3<\/h3>\r\n<ul data-spread=\"false\">\r\n \t<li>A Lightning Protection Zone (LPZ) koncepci\u00f3 seg\u00edt meghat\u00e1rozni, hogy hol \u00e9s milyen t\u00edpus\u00fa SPD-t kell telep\u00edteni.<\/li>\r\n \t<li>Az 1-es t\u00edpus\u00fa SPD-k hat\u00e1rv\u00e9delemre szolg\u00e1lnak (LPZ 0-t\u00f3l LPZ 1-ig), m\u00edg a 2-es \u00e9s a 3-as t\u00edpus\u00fa a bels\u0151 z\u00f3n\u00e1kat fedi le.<\/li>\r\n<\/ul>\r\nHa \u00e1tfog\u00f3bb k\u00e9pet szeretne l\u00e1tni arr\u00f3l, hogy a t\u00falfesz\u00fclts\u00e9g-v\u00e9delem hogyan v\u00e9di meg a fotovoltaikus rendszereket a vill\u00e1mcsap\u00e1st\u00f3l \u00e9s a h\u00e1l\u00f3zati zavarokt\u00f3l, tekintse meg alapvet\u0151 \u00fatmutat\u00f3nkat:<br data-start=\"726\" data-end=\"729\" \/>\ud83d\udc49 <strong data-start=\"734\" data-end=\"873\"><a class=\"\" href=\"https:\/\/www.britecelectric.com\/hu\/blog\/surge-protection-for-solar-photovoltaic-systems\/\" target=\"_new\" rel=\"noopener\" data-start=\"736\" data-end=\"871\">T\u00falfesz\u00fclts\u00e9g elleni v\u00e9delem fotovoltaikus napelemes rendszerekhez<\/a><\/strong>.\r\n<h2>3. Hogyan v\u00e1lasszuk ki a megfelel\u0151 napelemes SPD-t<\/h2>\r\nThis section is the heart of your decision-making process. Let's break down the most important criteria that engineers and procurement specialists should consider.\r\n<h3>3.1 Az SPD-k \u00e9s a fotovoltaikus rendszer p\u00e1ros\u00edt\u00e1sa<\/h3>\r\n<h4>3.1.1 Fesz\u00fclts\u00e9gszint (Ucpv)<\/h4>\r\nA szol\u00e1ris t\u00falfesz\u00fclts\u00e9g-v\u00e9delmi eszk\u00f6zt a maxim\u00e1lis rendszerfesz\u00fclts\u00e9gre kell m\u00e9retezni. Mindig:\r\n<ul data-spread=\"false\">\r\n \t<li>\u00c1ll\u00edtsa be az MCOV-t (maxim\u00e1lis folyamatos \u00fczemi fesz\u00fclts\u00e9g) \u00fagy, hogy legal\u00e1bb 10% legyen a rendszer Voc (nyitott \u00e1ramk\u00f6ri fesz\u00fclts\u00e9ge) felett.<\/li>\r\n \t<li>P\u00e9ld\u00e1ul egy 1000 V-os napelemes rendszerben v\u00e1lasszon 1100 V-os vagy magasabb n\u00e9vleges SPD-ket a megfelel\u0151 belmagass\u00e1g \u00e9s a hossz\u00fa t\u00e1v\u00fa stabilit\u00e1s biztos\u00edt\u00e1sa \u00e9rdek\u00e9ben.<\/li>\r\n \t<li>Haszn\u00e1ljon DC SPD-t a napenergi\u00e1hoz az egyen\u00e1ram\u00fa oldalon \u00e9s AC SPD-ket a h\u00e1l\u00f3zati csatlakoz\u00e1sokhoz.<\/li>\r\n<\/ul>\r\n<h4>3.1.2 A rendszer fel\u00e9p\u00edt\u00e9se<\/h4>\r\nA k\u00fcl\u00f6nb\u00f6z\u0151 rendszerarchitekt\u00far\u00e1k elt\u00e9r\u0151 SPD-konfigur\u00e1ci\u00f3t ig\u00e9nyelnek:\r\n<ul data-spread=\"false\">\r\n \t<li>String inverterek: SPD inverter k\u00f6zel\u00e9ben, DC bemenet \u00e9s AC kimenet.<\/li>\r\n \t<li>K\u00f6zponti inverterek: 1. t\u00edpus\u00fa SPD-t haszn\u00e1ljon a f\u0151 megszak\u00edt\u00f3 k\u00f6zel\u00e9ben.<\/li>\r\n \t<li>T\u00f6bb MPPT: Minden nyomk\u00f6vet\u0151nek sz\u00fcks\u00e9ge lehet egy dedik\u00e1ltra <a href=\"https:\/\/www.britecelectric.com\/hu\/product_category\/pv-surge-protection-type-2\/\" target=\"_blank\" rel=\"noopener\"><em><strong>2. t\u00edpus\u00fa SPD<\/strong><\/em><\/a>.<\/li>\r\n \t<li>Floating or Unearthed PV Systems: Y-configuration SPDs or symmetrical protection from both + and - to ground.<\/li>\r\n<\/ul>\r\n<h3 data-pm-slice=\"1 1 []\">3.2 Az \u00e9rt\u00e9kelend\u0151 legfontosabb SPD teljes\u00edtm\u00e9nyparam\u00e9terek<\/h3>\r\n<table style=\"width: 65.8612%;\">\r\n<tbody>\r\n<tr>\r\n<td style=\"width: 29.3919%; text-align: center;\" width=\"189\"><strong><b>Param\u00e9ter<\/b><\/strong><\/td>\r\n<td style=\"width: 36.8153%; text-align: center;\" width=\"189\"><strong><b>Le\u00edr\u00e1s<\/b><\/strong><\/td>\r\n<td style=\"width: 59.7317%; text-align: center;\" width=\"189\"><strong><b>Aj\u00e1nlott \u00e9rt\u00e9k<\/b><\/strong><\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"width: 29.3919%; text-align: center;\" width=\"189\">Imax<\/td>\r\n<td style=\"width: 36.8153%; text-align: center;\" width=\"189\">Maxim\u00e1lis egyszeri kis\u00fcl\u00e9si \u00e1ram (8\/20 \u00b5s)<\/td>\r\n<td style=\"width: 59.7317%; text-align: center;\" width=\"189\">40-80 kA<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"width: 29.3919%; text-align: center;\" width=\"189\">In<\/td>\r\n<td style=\"width: 36.8153%; text-align: center;\" width=\"189\">N\u00e9vleges kis\u00fcl\u00e9si \u00e1ram<\/td>\r\n<td style=\"width: 59.7317%; text-align: center;\" width=\"189\">\u226510 kA<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"width: 29.3919%; text-align: center;\" width=\"189\">Fel<\/td>\r\n<td style=\"width: 36.8153%; text-align: center;\" width=\"189\">Fesz\u00fclts\u00e9gv\u00e9delmi szint (szor\u00edt\u00f3fesz\u00fclts\u00e9g)<\/td>\r\n<td style=\"width: 59.7317%; text-align: center;\" width=\"189\">20% a berendez\u00e9s szigetel\u00e9si szintje alatt<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"width: 29.3919%; text-align: center;\" width=\"189\">vissza\u00e9l\u00e9s<\/td>\r\n<td style=\"width: 36.8153%; text-align: center;\" width=\"189\">Az SPD v\u00e1laszideje<\/td>\r\n<td style=\"width: 59.7317%; text-align: center;\" width=\"189\">&lt;25 ns (MOV-alap\u00fa SPD-k eset\u00e9n)<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<p data-pm-slice=\"1 1 []\">Ensure these parameters are matched to your installation's lightning flash density, fault current level, and system insulation strength.<\/p>\r\n\r\n<h3>3.3 Az SPD-t\u00edpusok magyar\u00e1zata (1., 2., 3., 1+2. t\u00edpus)<\/h3>\r\n<table style=\"width: 66.2713%;\">\r\n<tbody>\r\n<tr>\r\n<td style=\"width: 17.211%; text-align: center;\" width=\"142\"><strong><b>\u00cdrja be<\/b><\/strong><\/td>\r\n<td style=\"width: 30.605%; text-align: center;\" width=\"142\"><strong><b>Haszn\u00e1lati eset<\/b><\/strong><\/td>\r\n<td style=\"width: 20.8522%; text-align: center;\" width=\"142\"><strong><b>Hull\u00e1mforma<\/b><\/strong><\/td>\r\n<td style=\"width: 60.8315%; text-align: center;\" width=\"142\"><strong><b>Elhelyezked\u00e9s<\/b><\/strong><\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"width: 17.211%; text-align: center;\" width=\"142\">1. t\u00edpus<\/td>\r\n<td style=\"width: 30.605%; text-align: center;\" width=\"142\">K\u00f6zvetlen vill\u00e1ml\u00e1s (nagy energi\u00e1j\u00fa)<\/td>\r\n<td style=\"width: 20.8522%; text-align: center;\" width=\"142\">10\/350 \u00b5s<\/td>\r\n<td style=\"width: 60.8315%; text-align: center;\" width=\"142\">A t\u00f6mb \u00e9s a f\u0151 megszak\u00edt\u00e1s k\u00f6z\u00f6tt<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"width: 17.211%; text-align: center;\" width=\"142\">2. t\u00edpus<\/td>\r\n<td style=\"width: 30.605%; text-align: center;\" width=\"142\">K\u00f6zvetett t\u00falfesz\u00fclts\u00e9gek, kapcsol\u00e1s<\/td>\r\n<td style=\"width: 20.8522%; text-align: center;\" width=\"142\">8\/20 \u00b5s<\/td>\r\n<td style=\"width: 60.8315%; text-align: center;\" width=\"142\">Inverter bemenet, MPPT, kombin\u00e1l\u00f3 doboz<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"width: 17.211%; text-align: center;\" width=\"142\">3. t\u00edpus<\/td>\r\n<td style=\"width: 30.605%; text-align: center;\" width=\"142\">V\u00e9gs\u0151 v\u00e9delem a terhel\u00e9s v\u00e9g\u00e9n<\/td>\r\n<td style=\"width: 20.8522%; text-align: center;\" width=\"142\">Gyorsan \u00e1tmeneti<\/td>\r\n<td style=\"width: 60.8315%; text-align: center;\" width=\"142\">Monitoring, kommunik\u00e1ci\u00f3s portok<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"width: 17.211%; text-align: center;\" width=\"142\">1+2 t\u00edpus<\/td>\r\n<td style=\"width: 30.605%; text-align: center;\" width=\"142\">A teljes v\u00e1laszt\u00e9khoz kombin\u00e1lva<\/td>\r\n<td style=\"width: 20.8522%; text-align: center;\" width=\"142\">10\/350 + 8\/20 \u00b5s<\/td>\r\n<td style=\"width: 60.8315%; text-align: center;\" width=\"142\">Kritikus rendszerek (nagy PV er\u0151m\u0171vek)<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<p data-start=\"857\" data-end=\"1217\">Nem tudja, miben k\u00fcl\u00f6nb\u00f6zik az 1., 2. \u00e9s 3. t\u00edpus a funkcionalit\u00e1s, a hull\u00e1mforma v\u00e1lasz \u00e9s a haszn\u00e1lati esetek tekintet\u00e9ben? Lefedt\u00fck a <span style=\"text-decoration: underline;\"><a href=\"https:\/\/www.britecelectric.com\/hu\/blog\/difference-between-type-1-type-2-and-type-3-surge-protective-devices\/\"><span style=\"font-size: 20px;\"><em><strong data-start=\"964\" data-end=\"1152\">f\u0151 k\u00fcl\u00f6nbs\u00e9gek az 1-es, 2-es \u00e9s 3-as t\u00edpus\u00fa t\u00falfesz\u00fclts\u00e9g-v\u00e9delmi eszk\u00f6z\u00f6k k\u00f6z\u00f6tt<\/strong><\/em><\/span><\/a><\/span> egy r\u00e9szletes \u00f6sszehasonl\u00edt\u00f3 blogban, amely seg\u00edt a helyes v\u00e1laszt\u00e1sban.<\/p>\r\n<p data-start=\"1219\" data-end=\"1380\">Haszn\u00e1ljon 1-es t\u00edpus\u00fa szol\u00e1ris t\u00falfesz\u00fclts\u00e9g-v\u00e9delmi eszk\u00f6z\u00f6ket, ha a napelemes rendszer k\u00fcls\u0151 vill\u00e1mv\u00e9delmi rendszerhez (LPS) csatlakozik, \u00e9s nincs megfelel\u0151 t\u00e1vols\u00e1g (az IEC 62305-3 szerint).<\/p>\r\n\r\n<h3>3.4 Az SPD biztons\u00e1g\u00e1nak \u00e9s a term\u00e9k hossz\u00fa \u00e9lettartam\u00e1nak biztos\u00edt\u00e1sa<\/h3>\r\n<ul data-spread=\"false\">\r\n \t<li>V\u00e1lasszon SPD-ket be\u00e9p\u00edtett h\u0151szakaszol\u00f3kkal \u00e9s vizu\u00e1lis hibajelz\u0151kkel a val\u00f3s idej\u0171 \u00e1llapotfigyel\u00e9shez.<\/li>\r\n \t<li>Gy\u0151z\u0151dj\u00f6n meg arr\u00f3l, hogy a r\u00f6vidz\u00e1rlati ellen\u00e1ll\u00e1s nagyobb, mint a rendszer Isc (z\u00e1rlati \u00e1ram).<\/li>\r\n \t<li>If the SPD doesn't include internal overcurrent protection, always install an external fuse or circuit breaker in series.<\/li>\r\n \t<li>Soha ne haszn\u00e1ljon v\u00e1ltakoz\u00f3 \u00e1ram\u00fa SPD-t a napelemes rendszer egyen\u00e1ram\u00fa oldal\u00e1n \u2013 ez ellen\u0151rizetlen \u00edvgyullad\u00e1shoz, alkatr\u00e9szhib\u00e1khoz vagy ak\u00e1r t\u00fczet is okozhat az egyen\u00e1ram folyamatos jellege miatt.<\/li>\r\n<\/ul>\r\nAz AC \u00e9s DC t\u00falfesz\u00fclts\u00e9g elleni v\u00e9delem k\u00f6z\u00f6tti k\u00fcl\u00f6nbs\u00e9g meg\u00e9rt\u00e9se elengedhetetlen az ilyen helytelen alkalmaz\u00e1sok elker\u00fcl\u00e9se \u00e9rdek\u00e9ben. Fedezze fel az alapvet\u0151 <a href=\"https:\/\/www.britecelectric.com\/hu\/blog\/ac-vs-dc-surge-protection-whats-the-difference\/\"><span style=\"text-decoration: underline;\"><strong><em><span style=\"font-size: 20px;\">k\u00fcl\u00f6nbs\u00e9geket az AC \u00e9s DC SPD-k k\u00f6z\u00f6tt, \u00e9s tanulja meg, hogyan v\u00e1lassza ki a megfelel\u0151t a rendszer\u00e9hez<\/span><\/em><\/strong><\/span><\/a>.\r\n<h3>3.5 Megfelel\u0151s\u00e9g \u00e9s tesztel\u00e9s<\/h3>\r\nKeresse ezeket a jeleket \u00e9s specifik\u00e1ci\u00f3kat:\r\n<ul data-spread=\"false\">\r\n \t<li>UL 1449 5. kiad\u00e1s (\u00c9szak-Amerika)<\/li>\r\n \t<li><a href=\"https:\/\/cdn.standards.iteh.ai\/samples\/21306\/41f061cefcac43b0927ce5f0b8eb9b2d\/IEC-61643-31-2018.pdf\" target=\"_blank\" rel=\"nofollow noopener\"><strong>IEC 61643-31<\/strong><\/a> (PV DC SPD-k)<\/li>\r\n \t<li>IEC 61643-11 (AC SPD-k)<\/li>\r\n \t<li><a href=\"https:\/\/webstore.iec.ch\/en\/publication\/6471\"><strong>IEC 62109-1\/2<\/strong><\/a> (Inverterbe integr\u00e1lt SPD biztons\u00e1g)<\/li>\r\n \t<li>Harmadik f\u00e9l tan\u00fas\u00edt\u00e1sa: T\u00dcV, CE, Intertek, ETL<\/li>\r\n<\/ul>\r\n<h3>3.6 Telep\u00edt\u00e9s \u00e9s karbantarthat\u00f3s\u00e1g<\/h3>\r\n<ul data-spread=\"false\">\r\n \t<li>Telep\u00edtse az SPD-ket a v\u00e9dett eszk\u00f6z el\u00e9 (a panel \u00e9s az inverter k\u00f6z\u00e9).<\/li>\r\n \t<li>K\u00f6vesse a  10 m, szerelje fel az SPD-t mindk\u00e9t v\u00e9g\u00e9re.<\/li>\r\n \t<li>Tartsa r\u00f6viden a k\u00e1bel hossz\u00e1t (ide\u00e1lis esetben &lt;0,5 m), minimaliz\u00e1lja a hurok ter\u00fclet\u00e9t.<\/li>\r\n \t<li>Az \u00f6sszes SPD-t egy\u00e9rtelm\u0171en c\u00edmk\u00e9zze fel, \u00e9s haszn\u00e1ljon \u00e1llapotjelz\u0151ket vagy fel\u00fcgyeleti modulokat.<\/li>\r\n<\/ul>\r\n<h3>3.7 Alkalmaz\u00e1si k\u00f6rnyezet<\/h3>\r\n<ul data-spread=\"false\">\r\n \t<li>Szabadt\u00e9ri? Haszn\u00e1ljon SPD-ket a NEMA 4X \/ IP65+ burkolatokkal.<\/li>\r\n \t<li>Kem\u00e9ny \u00e9ghajlat? Keresse az UV-\u00e1ll\u00f3, magas h\u0151m\u00e9rs\u00e9klet toleranci\u00e1t.<\/li>\r\n \t<li>Vegye figyelembe az SPD teljes\u00edtm\u00e9ny\u00e9t \u201340\u00b0C \u00e9s +85\u00b0C k\u00f6z\u00f6tt.<\/li>\r\n<\/ul>\r\n<h3>3.8 K\u00f6lts\u00e9gmegfontol\u00e1sok<\/h3>\r\n<ul data-spread=\"false\">\r\n \t<li>Egyens\u00faly a k\u00f6lts\u00e9gek \u00e9s a v\u00e9delem k\u00f6z\u00f6tt \u2013 ne v\u00e9dje alul az $10 000 invertert az $30 megtakar\u00edt\u00e1s\u00e1hoz.<\/li>\r\n \t<li>Vegye figyelembe az \u00e9letciklus k\u00f6lts\u00e9geit: egy olcs\u00f3 SPD, amely 2 \u00e9v alatt meghib\u00e1sodik, t\u00f6bbe ker\u00fcl az \u00e1ll\u00e1sid\u0151ben.<\/li>\r\n \t<li>Hasonl\u00edtsa \u00f6ssze a Solar Surge Protection Device csereciklus\u00e1t, a garanci\u00e1lis id\u0151szakot \u00e9s a rendelkez\u00e9sre \u00e1ll\u00e1st.<\/li>\r\n<\/ul>\r\n<h3>3.9 Gyakori v\u00e1laszt\u00e1si hib\u00e1k, amelyeket el kell ker\u00fclni<\/h3>\r\n<ul data-spread=\"false\">\r\n \t<li>A 2-es t\u00edpus haszn\u00e1lata, ahol az 1-es t\u00edpus sz\u00fcks\u00e9ges<\/li>\r\n \t<li>AC SPD kiv\u00e1laszt\u00e1sa egyen\u00e1ram\u00fa \u00e1ramk\u00f6r\u00f6kh\u00f6z<\/li>\r\n \t<li>A villan\u00e1ss\u0171r\u0171s\u00e9g \u00e9s a hull\u00e1mforma figyelmen k\u00edv\u00fcl hagy\u00e1sa<\/li>\r\n \t<li>Nincs v\u00e9delem a rendszer AC oldal\u00e1n<\/li>\r\n \t<li>Nincs koordin\u00e1ci\u00f3 az LPS-sel (vill\u00e1mv\u00e9delmi rendszer)<\/li>\r\n \t<li>Nincs vizu\u00e1lis jelz\u0151 vagy fel\u00fcgyeleti rendszer<\/li>\r\n<\/ul>\r\n<h2 data-pm-slice=\"1 1 []\">4. K\u00f6vetkeztet\u00e9s<\/h2>\r\nChoosing the right Solar Surge Protection Device is not just a box-checking task\u2014it's a strategic step to protect your photovoltaic investment, ensure reliable energy output, and comply with safety standards.\r\n\r\nBy understanding Solar Surge Protection Device types, performance metrics, system compatibility, and environmental considerations, technical engineers and purchasing specialists can build robust PV systems that stand up to the test of time, lightning, and everything in between.\r\n\r\nDon\u2019t leave your system vulnerable. Choose the right solar SPD with the right certifications and specs\u2014and you\u2019ll gain peace of mind, long-term savings, and uninterrupted power.","protected":false},"featured_media":2118,"parent":0,"menu_order":129,"template":"","meta":{"_acf_changed":false},"blog_category":[9],"class_list":["post-2117","blog","type-blog","status-publish","has-post-thumbnail","hentry","blog_category-industry-news"],"acf":{"des":"Learn how to choose the right Solar Surge Protection Devices (SPDs) for your PV system. This guide covers SPD types, key selection criteria, AC vs. DC protection differences, and best practices to ensure long-term safety and performance.","txt":"<p data-pm-slice=\"1 3 []\">Surge protection is not just a precaution\u2014it's an essential part of a well-designed solar photovoltaic (PV) system. With the increasing adoption of solar energy worldwide, protecting these valuable systems against electrical transients is more critical than ever. This guide will walk you through everything you need to know about Solar Surge Protection Devices (Solar SPDs): what they are, why they matter, and how to choose the right one for your system.<\/p>\r\n\r\n<h2>1. What Are Solar Surge Protection Devices (Solar SPDs)?<\/h2>\r\nA Solar Surge Protection Device (Solar SPD) is a protective electrical component designed to divert or absorb transient overvoltage events, such as lightning strikes or switching operations, before they can damage sensitive solar equipment. These devices are installed at key locations in a solar PV system, including at the DC combiner box, photovoltaic inverter, and AC distribution panel.\r\n\r\nSolar SPDs are categorized by waveform response, discharge capacity, and installation location. They typically use components like Metal Oxide Varistors (MOVs), Gas Discharge Tubes (GDTs), and Transient Voltage Suppression (TVS) diodes to protect against overvoltage events.\r\n\r\n<a href=\"https:\/\/www.britecelectric.com\/attachment\/pv-surge-protector-type-2\/\" target=\"_blank\" rel=\"noopener\"><img class=\"alignnone wp-image-2118\" src=\"https:\/\/www.britecelectric.com\/wp-content\/uploads\/2025\/06\/PV-Surge-Protector-Type-2-1024x1024.webp\" alt=\"China Solar Surge Protection Devices\" width=\"794\" height=\"794\" \/><\/a>\r\n<h2>2. Why Do You Need Solar Surge Protection Devices?<\/h2>\r\nSurges pose a significant threat to solar systems. Here's why surge protection is a must:\r\n<h3>Lightning and Switching Overvoltage Risks<\/h3>\r\n<ul data-spread=\"false\">\r\n \t<li>Direct lightning strikes can inject high-energy impulses (10\/350 \u00b5s waveform) directly into PV arrays, causing catastrophic damage.<\/li>\r\n \t<li>Indirect lightning or electromagnetic coupling (8\/20 \u00b5s waveform) spreads voltage surges through long cables, damaging inverters, controllers, and monitoring systems.<\/li>\r\n \t<li>Grid switching operations cause voltage transients from capacitor banks or load shedding, which reflect through the AC connection.<\/li>\r\n<\/ul>\r\n<h3>Improve Reliability and Extend Equipment Lifespan<\/h3>\r\n<ul data-spread=\"false\">\r\n \t<li>Surges stress internal components, even if no immediate failure occurs.<\/li>\r\n \t<li>Repeated transients degrade insulation and reduce the Mean Time Between Failures (MTBF).<\/li>\r\n \t<li>Using proper <a href=\"https:\/\/www.britecelectric.com\/product-category\/dc-surge-protector\/\" target=\"_blank\" rel=\"noopener\"><em><strong>DC SPD<\/strong><\/em><\/a> for solar ensures photovoltaic surge protection that keeps systems online and efficient for years.<\/li>\r\n<\/ul>\r\n<h3>Enhance Electrical Safety<\/h3>\r\n<ul data-spread=\"false\">\r\n \t<li>Overvoltages can cause arc faults, insulation breakdown, and even fires.<\/li>\r\n \t<li>A high-quality Solar Surge Protection Device limits overvoltage to levels below the withstand capability of connected devices.<\/li>\r\n<\/ul>\r\n<h3>Standards Compliance<\/h3>\r\n<ul data-spread=\"false\">\r\n \t<li>UL 1449, IEC 61643-31, and IEC 62109 define SPD classification, testing, and installation requirements for PV systems.<\/li>\r\n \t<li>NEC 690.7(C) and NFPA 780 require SPDs for PV systems, especially in exposed outdoor areas.<\/li>\r\n<\/ul>\r\n<h3>LPZ (Lightning Protection Zones) Integration<\/h3>\r\n<ul data-spread=\"false\">\r\n \t<li>The Lightning Protection Zone (LPZ) concept helps determine where and what type of SPD should be installed.<\/li>\r\n \t<li>Type 1 SPDs are for boundary protection (LPZ 0 to LPZ 1), while Type 2 and Type 3 cover internal zones.<\/li>\r\n<\/ul>\r\nFor a broader look at how surge protection safeguards photovoltaic systems from lightning and grid disturbances, check out our foundational guide:<br data-start=\"726\" data-end=\"729\" \/>\ud83d\udc49 <strong data-start=\"734\" data-end=\"873\"><a class=\"\" href=\"https:\/\/www.britecelectric.com\/blog\/surge-protection-for-solar-photovoltaic-systems\/\" target=\"_new\" rel=\"noopener\" data-start=\"736\" data-end=\"871\">Surge Protection for Solar Photovoltaic Systems<\/a><\/strong>.\r\n<h2>3. How to Choose the Right Solar SPD<\/h2>\r\nThis section is the heart of your decision-making process. Let's break down the most important criteria that engineers and procurement specialists should consider.\r\n<h3>3.1 How to Match SPDs with Your PV System<\/h3>\r\n<h4>3.1.1 Voltage Level (Ucpv)<\/h4>\r\nYour Solar Surge Protection Device must be rated for the maximum system voltage. Always:\r\n<ul data-spread=\"false\">\r\n \t<li>Match the MCOV (Maximum Continuous Operating Voltage) to be at least 10% above the system Voc (Open Circuit Voltage).<\/li>\r\n \t<li>For example, in a 1000V PV system, choose SPDs rated at 1100V or higher to ensure proper headroom and long-term stability.<\/li>\r\n \t<li>Use DC SPD for solar on the DC side and AC SPDs for grid connections.<\/li>\r\n<\/ul>\r\n<h4>3.1.2 System Structure<\/h4>\r\nDifferent system architectures require different SPD configurations:\r\n<ul data-spread=\"false\">\r\n \t<li>String Inverters: SPD near inverter, DC input, and AC output.<\/li>\r\n \t<li>Central Inverters: Use Type 1 SPD near main disconnect.<\/li>\r\n \t<li>Multiple MPPT: Each tracker may require a dedicated <a href=\"https:\/\/www.britecelectric.com\/product_category\/pv-surge-protection-type-2\/\" target=\"_blank\" rel=\"noopener\"><em><strong>Type 2 SPD<\/strong><\/em><\/a>.<\/li>\r\n \t<li>Floating or Unearthed PV Systems: Y-configuration SPDs or symmetrical protection from both + and - to ground.<\/li>\r\n<\/ul>\r\n<h3 data-pm-slice=\"1 1 []\">3.2 Key SPD Performance Parameters to Evaluate<\/h3>\r\n<table style=\"width: 65.8612%;\">\r\n<tbody>\r\n<tr>\r\n<td style=\"width: 29.3919%; text-align: center;\" width=\"189\"><strong><b>Parameter<\/b><\/strong><\/td>\r\n<td style=\"width: 36.8153%; text-align: center;\" width=\"189\"><strong><b>Description<\/b><\/strong><\/td>\r\n<td style=\"width: 59.7317%; text-align: center;\" width=\"189\"><strong><b>Recommended Value<\/b><\/strong><\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"width: 29.3919%; text-align: center;\" width=\"189\">Imax<\/td>\r\n<td style=\"width: 36.8153%; text-align: center;\" width=\"189\">Maximum single discharge current (8\/20 \u00b5s)<\/td>\r\n<td style=\"width: 59.7317%; text-align: center;\" width=\"189\">40\u201380 kA<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"width: 29.3919%; text-align: center;\" width=\"189\">In<\/td>\r\n<td style=\"width: 36.8153%; text-align: center;\" width=\"189\">Nominal discharge current<\/td>\r\n<td style=\"width: 59.7317%; text-align: center;\" width=\"189\">\u226510 kA<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"width: 29.3919%; text-align: center;\" width=\"189\">Up<\/td>\r\n<td style=\"width: 36.8153%; text-align: center;\" width=\"189\">Voltage protection level (clamping voltage)<\/td>\r\n<td style=\"width: 59.7317%; text-align: center;\" width=\"189\">20% below the equipment insulation level<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"width: 29.3919%; text-align: center;\" width=\"189\">tresponse<\/td>\r\n<td style=\"width: 36.8153%; text-align: center;\" width=\"189\">Response time of the SPD<\/td>\r\n<td style=\"width: 59.7317%; text-align: center;\" width=\"189\">&lt;25 ns (for MOV-based SPDs)<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<p data-pm-slice=\"1 1 []\">Ensure these parameters are matched to your installation's lightning flash density, fault current level, and system insulation strength.<\/p>\r\n\r\n<h3>3.3 SPD Types Explained (Type 1, 2, 3, 1+2)<\/h3>\r\n<table style=\"width: 66.2713%;\">\r\n<tbody>\r\n<tr>\r\n<td style=\"width: 17.211%; text-align: center;\" width=\"142\"><strong><b>Type<\/b><\/strong><\/td>\r\n<td style=\"width: 30.605%; text-align: center;\" width=\"142\"><strong><b>Use Case<\/b><\/strong><\/td>\r\n<td style=\"width: 20.8522%; text-align: center;\" width=\"142\"><strong><b>Waveform<\/b><\/strong><\/td>\r\n<td style=\"width: 60.8315%; text-align: center;\" width=\"142\"><strong><b>Location<\/b><\/strong><\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"width: 17.211%; text-align: center;\" width=\"142\">Type 1<\/td>\r\n<td style=\"width: 30.605%; text-align: center;\" width=\"142\">Direct lightning (high energy)<\/td>\r\n<td style=\"width: 20.8522%; text-align: center;\" width=\"142\">10\/350 \u00b5s<\/td>\r\n<td style=\"width: 60.8315%; text-align: center;\" width=\"142\">Between the array &amp; main disconnect<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"width: 17.211%; text-align: center;\" width=\"142\">Type 2<\/td>\r\n<td style=\"width: 30.605%; text-align: center;\" width=\"142\">Indirect surges, switching<\/td>\r\n<td style=\"width: 20.8522%; text-align: center;\" width=\"142\">8\/20 \u00b5s<\/td>\r\n<td style=\"width: 60.8315%; text-align: center;\" width=\"142\">Inverter input, MPPT, combiner box<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"width: 17.211%; text-align: center;\" width=\"142\">Type 3<\/td>\r\n<td style=\"width: 30.605%; text-align: center;\" width=\"142\">Final protection at the load end<\/td>\r\n<td style=\"width: 20.8522%; text-align: center;\" width=\"142\">Fast transient<\/td>\r\n<td style=\"width: 60.8315%; text-align: center;\" width=\"142\">Monitoring, comm ports<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"width: 17.211%; text-align: center;\" width=\"142\">Type 1+2<\/td>\r\n<td style=\"width: 30.605%; text-align: center;\" width=\"142\">Combined for the full range<\/td>\r\n<td style=\"width: 20.8522%; text-align: center;\" width=\"142\">10\/350 + 8\/20 \u00b5s<\/td>\r\n<td style=\"width: 60.8315%; text-align: center;\" width=\"142\">Critical systems (large PV plants)<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<p data-start=\"857\" data-end=\"1217\">Not sure how Type 1, 2, and 3 differ in functionality, waveform response, and use cases? We\u2019ve covered the <span style=\"text-decoration: underline;\"><a href=\"https:\/\/www.britecelectric.com\/blog\/difference-between-type-1-type-2-and-type-3-surge-protective-devices\/\"><span style=\"font-size: 20px;\"><em><strong data-start=\"964\" data-end=\"1152\">key differences between Type 1, Type 2, and Type 3 surge protective devices<\/strong><\/em><\/span><\/a><\/span> in a detailed comparison blog to help you make the right choice.<\/p>\r\n<p data-start=\"1219\" data-end=\"1380\">Use Type 1 Solar Surge Protection Devices if the PV system is connected to an external lightning protection system (LPS) with insufficient separation distance (as per IEC 62305-3).<\/p>\r\n\r\n<h3>3.4 How to Ensure SPD Safety and Product Longevity<\/h3>\r\n<ul data-spread=\"false\">\r\n \t<li>Choose SPDs with built-in thermal disconnectors and visual failure indicators for real-time status monitoring.<\/li>\r\n \t<li>Ensure the short-circuit withstand rating is greater than the system\u2019s Isc (short-circuit current).<\/li>\r\n \t<li>If the SPD doesn't include internal overcurrent protection, always install an external fuse or circuit breaker in series.<\/li>\r\n \t<li>Never use an AC SPD on the DC side of a solar PV system\u2014it can lead to uncontrolled arcing, component failure, or even fire due to the continuous nature of direct current.<\/li>\r\n<\/ul>\r\nUnderstanding the distinction between AC and DC surge protection is essential to avoid such misapplications. Explore the fundamental <a href=\"https:\/\/www.britecelectric.com\/blog\/ac-vs-dc-surge-protection-whats-the-difference\/\"><span style=\"text-decoration: underline;\"><strong><em><span style=\"font-size: 20px;\">differences between AC and DC SPDs and learn how to select the right one for your system<\/span><\/em><\/strong><\/span><\/a>.\r\n<h3>3.5 Compliance &amp; Testing<\/h3>\r\nLook for these marks and specs:\r\n<ul data-spread=\"false\">\r\n \t<li>UL 1449 5th Edition (North America)<\/li>\r\n \t<li><a href=\"https:\/\/cdn.standards.iteh.ai\/samples\/21306\/41f061cefcac43b0927ce5f0b8eb9b2d\/IEC-61643-31-2018.pdf\" target=\"_blank\" rel=\"nofollow noopener\"><strong>IEC 61643-31<\/strong><\/a> (PV DC SPDs)<\/li>\r\n \t<li>IEC 61643-11 (AC SPDs)<\/li>\r\n \t<li><a href=\"https:\/\/webstore.iec.ch\/en\/publication\/6471\"><strong>IEC 62109-1\/2<\/strong><\/a> (Inverter-integrated SPD safety)<\/li>\r\n \t<li>Third-party certification: T\u00dcV, CE, Intertek, ETL<\/li>\r\n<\/ul>\r\n<h3>3.6 Installation &amp; Maintainability<\/h3>\r\n<ul data-spread=\"false\">\r\n \t<li>Install SPDs upstream of the protected device (between the panel and the inverter).<\/li>\r\n \t<li>Follow the &lt; 10-meter rule: if the cable is&gt;10m, install SPD at both ends.<\/li>\r\n \t<li>Keep cable length short (&lt;0.5 m ideally), minimize loop area.<\/li>\r\n \t<li>Label all SPDs clearly, and use status indicators or monitoring modules.<\/li>\r\n<\/ul>\r\n<h3>3.7 Application Environment<\/h3>\r\n<ul data-spread=\"false\">\r\n \t<li>Outdoor? Use SPDs with NEMA 4X \/ IP65+ enclosures.<\/li>\r\n \t<li>Harsh climates? Look for UV-resistant, high-temperature tolerance.<\/li>\r\n \t<li>Consider SPD performance at \u221240\u00b0C to +85\u00b0C range.<\/li>\r\n<\/ul>\r\n<h3>3.8 Cost Considerations<\/h3>\r\n<ul data-spread=\"false\">\r\n \t<li>Balance cost vs. protection \u2014 don\u2019t under-protect a $10,000 inverter to save $30.<\/li>\r\n \t<li>Consider lifecycle cost: a cheap SPD that fails in 2 years costs more in downtime.<\/li>\r\n \t<li>Compare Solar Surge Protection Device replacement cycle, warranty period, and availability.<\/li>\r\n<\/ul>\r\n<h3>3.9 Common Selection Mistakes to Avoid<\/h3>\r\n<ul data-spread=\"false\">\r\n \t<li>Using Type 2 where Type 1 is required<\/li>\r\n \t<li>Selecting AC SPD for DC circuits<\/li>\r\n \t<li>Ignoring flash density and waveform<\/li>\r\n \t<li>No protection on the AC side of the system<\/li>\r\n \t<li>No coordination with LPS (Lightning Protection System)<\/li>\r\n \t<li>No visual indicator or monitoring system<\/li>\r\n<\/ul>\r\n<h2 data-pm-slice=\"1 1 []\">4. Conclusion<\/h2>\r\nChoosing the right Solar Surge Protection Device is not just a box-checking task\u2014it's a strategic step to protect your photovoltaic investment, ensure reliable energy output, and comply with safety standards.\r\n\r\nBy understanding Solar Surge Protection Device types, performance metrics, system compatibility, and environmental considerations, technical engineers and purchasing specialists can build robust PV systems that stand up to the test of time, lightning, and everything in between.\r\n\r\nDon\u2019t leave your system vulnerable. Choose the right solar SPD with the right certifications and specs\u2014and you\u2019ll gain peace of mind, long-term savings, and uninterrupted power."},"_links":{"self":[{"href":"https:\/\/www.britecelectric.com\/hu\/wp-json\/wp\/v2\/blog\/2117","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\/2118"}],"wp:attachment":[{"href":"https:\/\/www.britecelectric.com\/hu\/wp-json\/wp\/v2\/media?parent=2117"}],"wp:term":[{"taxonomy":"blog_category","embeddable":true,"href":"https:\/\/www.britecelectric.com\/hu\/wp-json\/wp\/v2\/blog_category?post=2117"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}