{"id":27036,"date":"2024-12-30T18:37:41","date_gmt":"2024-12-30T10:37:41","guid":{"rendered":"https:\/\/www.cnspd.com\/?p=27036"},"modified":"2026-04-13T13:08:20","modified_gmt":"2026-04-13T05:08:20","slug":"spd-type1-vs-type2-vs-type-3","status":"publish","type":"post","link":"https:\/\/www.cnspd.com\/fr\/spd-type-1-vs-type-2-vs-type-3\/","title":{"rendered":"Type 1 vs Type 2 vs Type 3 SPD : Le livre blanc d\u00e9finitif pour la protection globale contre les surtensions"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/fr\/spd-type-1-vs-type-2-vs-type-3\/#introduction\" >Introduction<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/fr\/spd-type-1-vs-type-2-vs-type-3\/#part-i-the-technical-foundation-%e2%80%93-defining-spd-types\" >Part I: The Technical Foundation \u2013 Defining SPD Types<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/fr\/spd-type-1-vs-type-2-vs-type-3\/#type-1-spd-lightning-arrester-class-i\" >Type 1 SPD: Lightning Arrester (Class I)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/fr\/spd-type-1-vs-type-2-vs-type-3\/#type-2-spd-main-protection-class-ii\" >Type 2 SPD: Main Protection (Class II)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/fr\/spd-type-1-vs-type-2-vs-type-3\/#type-3-spd-point-of-use-protection-class-iii\" >Type 3 SPD: Point-of-Use Protection (Class III)<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/fr\/spd-type-1-vs-type-2-vs-type-3\/#part-ii-the-physics-of-waveforms-%e2%80%93-10350%c2%b5s-vs-820%c2%b5s\" >Part II: The Physics of Waveforms \u2013 10\/350\u00b5s vs 8\/20\u00b5s<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/fr\/spd-type-1-vs-type-2-vs-type-3\/#10350%c2%b5s-waveform-direct-lightning\" >10\/350\u00b5s Waveform (Direct Lightning)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/fr\/spd-type-1-vs-type-2-vs-type-3\/#820%c2%b5s-waveform-indirect-surge\" >8\/20\u00b5s Waveform (Indirect Surge)<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/fr\/spd-type-1-vs-type-2-vs-type-3\/#part-iii-comparison-table\" >Part III: Comparison Table<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/fr\/spd-type-1-vs-type-2-vs-type-3\/#part-iv-coordination-cascading-%e2%80%93-the-10-meter-rule\" >Part IV: Coordination &amp; Cascading \u2013 The 10 Meter Rule<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/fr\/spd-type-1-vs-type-2-vs-type-3\/#why-coordination-matters\" >Why Coordination Matters<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/fr\/spd-type-1-vs-type-2-vs-type-3\/#coordination-distance\" >Coordination Distance<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/fr\/spd-type-1-vs-type-2-vs-type-3\/#type-12-combined-spd\" >Type 1+2 Combined SPD<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/fr\/spd-type-1-vs-type-2-vs-type-3\/#part-v-b2b-sourcing-advantage-%e2%80%93-the-leeyee-difference\" >Part V: B2B Sourcing Advantage \u2013 The LEEYEE Difference<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/fr\/spd-type-1-vs-type-2-vs-type-3\/#risk-mitigation\" >Risk Mitigation<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/fr\/spd-type-1-vs-type-2-vs-type-3\/#production-capacity\" >Production Capacity<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/fr\/spd-type-1-vs-type-2-vs-type-3\/#part-vi-procurement-guide-%e2%80%93-5-red-flags-when-buying-spds\" >Part VI: Procurement Guide \u2013 5 Red Flags When Buying SPDs<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/fr\/spd-type-1-vs-type-2-vs-type-3\/#1-fake-type-1-claims\" >1. Fake Type 1 Claims<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/fr\/spd-type-1-vs-type-2-vs-type-3\/#2-no-thermal-protection\" >2. No Thermal Protection<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/fr\/spd-type-1-vs-type-2-vs-type-3\/#3-high-voltage-protection-level\" >3. High Voltage Protection Level<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/fr\/spd-type-1-vs-type-2-vs-type-3\/#4-fake-certificates\" >4. Fake Certificates<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/fr\/spd-type-1-vs-type-2-vs-type-3\/#5-no-product-liability-insurance\" >5. No Product Liability Insurance<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/fr\/spd-type-1-vs-type-2-vs-type-3\/#frequently-asked-questions-faq\" >Frequently Asked Questions (FAQ)<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/fr\/spd-type-1-vs-type-2-vs-type-3\/#do-i-need-a-type-1-spd-if-i-dont-have-a-lightning-rod\" >Do I need a Type 1 SPD if I don&#8217;t have a lightning rod?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-25\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/fr\/spd-type-1-vs-type-2-vs-type-3\/#what-is-the-difference-between-iimp-and-imax\" >What is the difference between Iimp and Imax?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-26\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/fr\/spd-type-1-vs-type-2-vs-type-3\/#can-i-use-only-a-type-1-spd\" >Can I use only a Type 1 SPD?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-27\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/fr\/spd-type-1-vs-type-2-vs-type-3\/#how-often-should-spds-be-replaced\" >How often should SPDs be replaced?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-28\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/fr\/spd-type-1-vs-type-2-vs-type-3\/#what-is-a-31-spd-configuration\" >What is a 3+1 SPD configuration?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-29\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/fr\/spd-type-1-vs-type-2-vs-type-3\/#does-leeyee-support-oem-odm\" >Does LEEYEE support OEM \/ ODM?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-30\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/fr\/spd-type-1-vs-type-2-vs-type-3\/#conclusion\" >Conclusion<\/a><\/li><\/ul><\/nav><\/div>\n<h2 data-start=\"565\" data-end=\"580\"><span class=\"ez-toc-section\" id=\"introduction\"><\/span>Introduction<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"582\" data-end=\"779\">In the modern electrical landscape, where infrastructure is increasingly interconnected and sensitive, the <strong data-start=\"689\" data-end=\"722\">Surge Protective Device (SPD)<\/strong> has evolved from a luxury to a non-negotiable necessity.<\/p>\n<p data-start=\"781\" data-end=\"993\">For industrial facilities, commercial complexes, and critical data centers, the choice between <strong data-start=\"876\" data-end=\"911\">Type 1, Type 2, and Type 3 SPDs<\/strong> can determine whether a system remains resilient or suffers catastrophic failure.<\/p>\n<p data-start=\"995\" data-end=\"1110\">A single lightning strike or severe grid transient can cause millions in equipment damage and operational downtime.<\/p>\n<p data-start=\"1112\" data-end=\"1294\">For professional distributors and procurement managers, understanding SPD types is not only about technical compliance but also about <strong data-start=\"1246\" data-end=\"1293\">risk management and long-term profitability<\/strong>.<\/p>\n<p data-start=\"1296\" data-end=\"1549\">At <strong data-start=\"1299\" data-end=\"1319\">LEEYEE Electrics<\/strong>, we have specialized in low-voltage protection devices since <strong data-start=\"1381\" data-end=\"1389\">2009<\/strong>. Operating from our <strong data-start=\"1410\" data-end=\"1469\">8,000 m\u00b2 manufacturing facility with 8 production lines<\/strong>, we supply high-performance SPDs to European, American, and Australian markets.<\/p>\n<p data-start=\"1551\" data-end=\"1676\">This whitepaper explains the <strong data-start=\"1580\" data-end=\"1651\">technical principles, waveform physics, and sourcing considerations<\/strong> for professional buyers.<\/p>\n<hr data-start=\"1678\" data-end=\"1681\" \/>\n<h2 data-start=\"1683\" data-end=\"1739\"><span class=\"ez-toc-section\" id=\"part-i-the-technical-foundation-%e2%80%93-defining-spd-types\"><\/span>Part I: The Technical Foundation \u2013 Defining SPD Types<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"1741\" data-end=\"1877\">Surge Protective Devices are categorized based on their <strong data-start=\"1797\" data-end=\"1822\">installation location<\/strong> and the <strong data-start=\"1831\" data-end=\"1876\">type of surge they are designed to handle<\/strong>.<\/p>\n<p data-start=\"1879\" data-end=\"1931\">This classification follows international standards:<\/p>\n<ul data-start=\"1933\" data-end=\"1969\">\n<li data-start=\"1933\" data-end=\"1951\">\n<p data-start=\"1935\" data-end=\"1951\"><strong data-start=\"1935\" data-end=\"1951\">IEC 61643-11<\/strong><\/p>\n<\/li>\n<li data-start=\"1952\" data-end=\"1969\">\n<p data-start=\"1954\" data-end=\"1969\"><strong data-start=\"1954\" data-end=\"1969\">EN 61643-11<\/strong><\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"1971\" data-end=\"2015\"><span class=\"ez-toc-section\" id=\"type-1-spd-lightning-arrester-class-i\"><\/span>Type 1 SPD: Lightning Arrester (Class I)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"2017\" data-end=\"2089\">Type 1 SPDs are designed to handle <strong data-start=\"2052\" data-end=\"2088\">direct lightning strike currents<\/strong>.<\/p>\n<p data-start=\"2091\" data-end=\"2103\"><strong data-start=\"2091\" data-end=\"2103\">Location<\/strong><\/p>\n<ul data-start=\"2104\" data-end=\"2170\">\n<li data-start=\"2104\" data-end=\"2170\">\n<p data-start=\"2106\" data-end=\"2170\">Installed at the <strong data-start=\"2123\" data-end=\"2170\">service entrance or main distribution board<\/strong><\/p>\n<\/li>\n<\/ul>\n<p data-start=\"2172\" data-end=\"2189\"><strong data-start=\"2172\" data-end=\"2189\">Test Waveform<\/strong><\/p>\n<ul data-start=\"2190\" data-end=\"2227\">\n<li data-start=\"2190\" data-end=\"2227\">\n<p data-start=\"2192\" data-end=\"2227\"><strong data-start=\"2192\" data-end=\"2227\">10\/350\u00b5s impulse current (Iimp)<\/strong><\/p>\n<\/li>\n<\/ul>\n<p data-start=\"2229\" data-end=\"2241\"><strong data-start=\"2229\" data-end=\"2241\">Function<\/strong><\/p>\n<ul data-start=\"2242\" data-end=\"2332\">\n<li data-start=\"2242\" data-end=\"2332\">\n<p data-start=\"2244\" data-end=\"2332\">Diverts massive lightning energy from lightning rods or overhead lines safely to ground.<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"2334\" data-end=\"2354\"><strong data-start=\"2334\" data-end=\"2354\">LEEYEE Advantage<\/strong><\/p>\n<ul data-start=\"2356\" data-end=\"2464\">\n<li data-start=\"2356\" data-end=\"2414\">\n<p data-start=\"2358\" data-end=\"2414\">High-capacity <strong data-start=\"2372\" data-end=\"2414\">Spark Gap or heavy-duty MOV technology<\/strong><\/p>\n<\/li>\n<li data-start=\"2415\" data-end=\"2464\">\n<p data-start=\"2417\" data-end=\"2464\">Iimp capability up to <strong data-start=\"2439\" data-end=\"2464\">25kA or 50kA per pole<\/strong><\/p>\n<\/li>\n<\/ul>\n<hr data-start=\"2466\" data-end=\"2469\" \/>\n<h3 data-start=\"2471\" data-end=\"2513\"><span class=\"ez-toc-section\" id=\"type-2-spd-main-protection-class-ii\"><\/span>Type 2 SPD: Main Protection (Class II)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"2515\" data-end=\"2599\">Type 2 SPDs protect against <strong data-start=\"2543\" data-end=\"2598\">indirect lightning strikes and switching transients<\/strong>.<\/p>\n<p data-start=\"2601\" data-end=\"2613\"><strong data-start=\"2601\" data-end=\"2613\">Location<\/strong><\/p>\n<ul data-start=\"2615\" data-end=\"2685\">\n<li data-start=\"2615\" data-end=\"2685\">\n<p data-start=\"2617\" data-end=\"2685\">Installed in <strong data-start=\"2630\" data-end=\"2685\">main distribution boards or sub-distribution boards<\/strong><\/p>\n<\/li>\n<\/ul>\n<p data-start=\"2687\" data-end=\"2704\"><strong data-start=\"2687\" data-end=\"2704\">Test Waveform<\/strong><\/p>\n<ul data-start=\"2706\" data-end=\"2749\">\n<li data-start=\"2706\" data-end=\"2749\">\n<p data-start=\"2708\" data-end=\"2749\"><strong data-start=\"2708\" data-end=\"2749\">8\/20\u00b5s nominal discharge current (In)<\/strong><\/p>\n<\/li>\n<\/ul>\n<p data-start=\"2751\" data-end=\"2763\"><strong data-start=\"2751\" data-end=\"2763\">Function<\/strong><\/p>\n<ul data-start=\"2765\" data-end=\"2893\">\n<li data-start=\"2765\" data-end=\"2809\">\n<p data-start=\"2767\" data-end=\"2809\">Clamps residual voltage from upstream SPDs<\/p>\n<\/li>\n<li data-start=\"2810\" data-end=\"2893\">\n<p data-start=\"2812\" data-end=\"2893\">Protects against switching surges from motors, transformers, or grid disturbances<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"2895\" data-end=\"2915\"><strong data-start=\"2895\" data-end=\"2915\">LEEYEE Advantage<\/strong><\/p>\n<ul data-start=\"2917\" data-end=\"2998\">\n<li data-start=\"2917\" data-end=\"2944\">\n<p data-start=\"2919\" data-end=\"2944\">Example: <strong data-start=\"2928\" data-end=\"2944\">LY2-C Series<\/strong><\/p>\n<\/li>\n<li data-start=\"2945\" data-end=\"2998\">\n<p data-start=\"2947\" data-end=\"2998\">Optimized <strong data-start=\"2957\" data-end=\"2998\">Voltage Protection Level (Up &lt; 1.5kV)<\/strong><\/p>\n<\/li>\n<\/ul>\n<hr data-start=\"3000\" data-end=\"3003\" \/>\n<h3 data-start=\"3005\" data-end=\"3056\"><span class=\"ez-toc-section\" id=\"type-3-spd-point-of-use-protection-class-iii\"><\/span>Type 3 SPD: Point-of-Use Protection (Class III)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"3058\" data-end=\"3124\">Type 3 SPDs provide <strong data-start=\"3078\" data-end=\"3123\">fine protection for sensitive electronics<\/strong>.<\/p>\n<p data-start=\"3126\" data-end=\"3138\"><strong data-start=\"3126\" data-end=\"3138\">Location<\/strong><\/p>\n<ul data-start=\"3140\" data-end=\"3195\">\n<li data-start=\"3140\" data-end=\"3195\">\n<p data-start=\"3142\" data-end=\"3195\">Installed <strong data-start=\"3152\" data-end=\"3195\">close to equipment (within 5\u201310 meters)<\/strong><\/p>\n<\/li>\n<\/ul>\n<p data-start=\"3197\" data-end=\"3214\"><strong data-start=\"3197\" data-end=\"3214\">Test Waveform<\/strong><\/p>\n<ul data-start=\"3216\" data-end=\"3278\">\n<li data-start=\"3216\" data-end=\"3278\">\n<p data-start=\"3218\" data-end=\"3238\"><strong data-start=\"3218\" data-end=\"3238\">Combination Wave<\/strong><\/p>\n<ul data-start=\"3241\" data-end=\"3278\">\n<li data-start=\"3241\" data-end=\"3259\">\n<p data-start=\"3243\" data-end=\"3259\">1.2\/50\u00b5s voltage<\/p>\n<\/li>\n<li data-start=\"3262\" data-end=\"3278\">\n<p data-start=\"3264\" data-end=\"3278\">8\/20\u00b5s current<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p data-start=\"3280\" data-end=\"3292\"><strong data-start=\"3280\" data-end=\"3292\">Function<\/strong><\/p>\n<ul data-start=\"3294\" data-end=\"3385\">\n<li data-start=\"3294\" data-end=\"3385\">\n<p data-start=\"3296\" data-end=\"3331\">Protects sensitive devices such as:<\/p>\n<ul data-start=\"3334\" data-end=\"3385\">\n<li data-start=\"3334\" data-end=\"3351\">\n<p data-start=\"3336\" data-end=\"3351\">PLC controllers<\/p>\n<\/li>\n<li data-start=\"3354\" data-end=\"3363\">\n<p data-start=\"3356\" data-end=\"3363\">Servers<\/p>\n<\/li>\n<li data-start=\"3366\" data-end=\"3385\">\n<p data-start=\"3368\" data-end=\"3385\">Medical equipment<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p data-start=\"3387\" data-end=\"3407\"><strong data-start=\"3387\" data-end=\"3407\">LEEYEE Advantage<\/strong><\/p>\n<ul data-start=\"3409\" data-end=\"3489\">\n<li data-start=\"3409\" data-end=\"3426\">\n<p data-start=\"3411\" data-end=\"3426\">Compact designs<\/p>\n<\/li>\n<li data-start=\"3427\" data-end=\"3489\">\n<p data-start=\"3429\" data-end=\"3489\">Can be integrated into <strong data-start=\"3452\" data-end=\"3489\">power sockets or small enclosures<\/strong><\/p>\n<\/li>\n<\/ul>\n<hr data-start=\"3491\" data-end=\"3494\" \/>\n<h2 data-start=\"3496\" data-end=\"3553\"><span class=\"ez-toc-section\" id=\"part-ii-the-physics-of-waveforms-%e2%80%93-10350%c2%b5s-vs-820%c2%b5s\"><\/span>Part II: The Physics of Waveforms \u2013 10\/350\u00b5s vs 8\/20\u00b5s<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"3555\" data-end=\"3649\">The key technical difference between <strong data-start=\"3592\" data-end=\"3618\">Type 1 and Type 2 SPDs<\/strong> lies in the <strong data-start=\"3631\" data-end=\"3648\">test waveform<\/strong>.<\/p>\n<h3 data-start=\"3651\" data-end=\"3691\"><span class=\"ez-toc-section\" id=\"10350%c2%b5s-waveform-direct-lightning\"><\/span>10\/350\u00b5s Waveform (Direct Lightning)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"3693\" data-end=\"3747\">This waveform simulates a <strong data-start=\"3719\" data-end=\"3746\">direct lightning strike<\/strong>.<\/p>\n<p data-start=\"3749\" data-end=\"3765\">Characteristics:<\/p>\n<ul data-start=\"3767\" data-end=\"3810\">\n<li data-start=\"3767\" data-end=\"3787\">\n<p data-start=\"3769\" data-end=\"3787\"><strong data-start=\"3769\" data-end=\"3787\">10\u00b5s rise time<\/strong><\/p>\n<\/li>\n<li data-start=\"3788\" data-end=\"3810\">\n<p data-start=\"3790\" data-end=\"3810\"><strong data-start=\"3790\" data-end=\"3810\">350\u00b5s decay time<\/strong><\/p>\n<\/li>\n<\/ul>\n<p data-start=\"3812\" data-end=\"3835\">Energy Characteristics:<\/p>\n<ul data-start=\"3837\" data-end=\"3923\">\n<li data-start=\"3837\" data-end=\"3923\">\n<p data-start=\"3839\" data-end=\"3923\">Contains <strong data-start=\"3848\" data-end=\"3873\">about 20\u00d7 more energy<\/strong> than an 8\/20\u00b5s waveform of the same peak current.<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"3925\" data-end=\"3947\">Engineering Challenge:<\/p>\n<ul data-start=\"3949\" data-end=\"4030\">\n<li data-start=\"3949\" data-end=\"4030\">\n<p data-start=\"3951\" data-end=\"4030\">Only <strong data-start=\"3956\" data-end=\"3976\">true Type 1 SPDs<\/strong> can survive this energy without catastrophic failure.<\/p>\n<\/li>\n<\/ul>\n<hr data-start=\"4032\" data-end=\"4035\" \/>\n<h3 data-start=\"4037\" data-end=\"4073\"><span class=\"ez-toc-section\" id=\"820%c2%b5s-waveform-indirect-surge\"><\/span>8\/20\u00b5s Waveform (Indirect Surge)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"4075\" data-end=\"4151\">This waveform represents <strong data-start=\"4100\" data-end=\"4150\">indirect lightning effects or switching surges<\/strong>.<\/p>\n<p data-start=\"4153\" data-end=\"4169\">Characteristics:<\/p>\n<ul data-start=\"4171\" data-end=\"4212\">\n<li data-start=\"4171\" data-end=\"4190\">\n<p data-start=\"4173\" data-end=\"4190\"><strong data-start=\"4173\" data-end=\"4190\">8\u00b5s rise time<\/strong><\/p>\n<\/li>\n<li data-start=\"4191\" data-end=\"4212\">\n<p data-start=\"4193\" data-end=\"4212\"><strong data-start=\"4193\" data-end=\"4212\">20\u00b5s decay time<\/strong><\/p>\n<\/li>\n<\/ul>\n<p data-start=\"4214\" data-end=\"4237\">Energy Characteristics:<\/p>\n<ul data-start=\"4239\" data-end=\"4301\">\n<li data-start=\"4239\" data-end=\"4267\">\n<p data-start=\"4241\" data-end=\"4267\">Lower energy than 10\/350\u00b5s<\/p>\n<\/li>\n<li data-start=\"4268\" data-end=\"4301\">\n<p data-start=\"4270\" data-end=\"4301\">Occurs <strong data-start=\"4277\" data-end=\"4301\">much more frequently<\/strong><\/p>\n<\/li>\n<\/ul>\n<p data-start=\"4303\" data-end=\"4325\">Engineering Challenge:<\/p>\n<ul data-start=\"4327\" data-end=\"4390\">\n<li data-start=\"4327\" data-end=\"4390\">\n<p data-start=\"4329\" data-end=\"4390\">SPDs must withstand <strong data-start=\"4349\" data-end=\"4389\">thousands of repetitive surge events<\/strong>.<\/p>\n<\/li>\n<\/ul>\n<hr data-start=\"4392\" data-end=\"4395\" \/>\n<h2 data-start=\"4397\" data-end=\"4426\"><span class=\"ez-toc-section\" id=\"part-iii-comparison-table\"><\/span>Part III: Comparison Table<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<div class=\"TyagGW_tableContainer\">\n<div class=\"group TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\">\n<table class=\"w-fit min-w-(--thread-content-width)\" data-start=\"4428\" data-end=\"5058\">\n<thead data-start=\"4428\" data-end=\"4511\">\n<tr data-start=\"4428\" data-end=\"4511\">\n<th class=\"\" data-start=\"4428\" data-end=\"4438\" data-col-size=\"sm\">Feature<\/th>\n<th class=\"\" data-start=\"4438\" data-end=\"4461\" data-col-size=\"sm\">Type 1 SPD (Class I)<\/th>\n<th class=\"\" data-start=\"4461\" data-end=\"4485\" data-col-size=\"sm\">Type 2 SPD (Class II)<\/th>\n<th class=\"\" data-start=\"4485\" data-end=\"4511\" data-col-size=\"sm\">Type 3 SPD (Class III)<\/th>\n<\/tr>\n<\/thead>\n<tbody data-start=\"4530\" data-end=\"5058\">\n<tr data-start=\"4530\" data-end=\"4624\">\n<td data-start=\"4530\" data-end=\"4554\" data-col-size=\"sm\">Primary Test Waveform<\/td>\n<td data-start=\"4554\" data-end=\"4573\" data-col-size=\"sm\">10\/350 \u00b5s (Iimp)<\/td>\n<td data-start=\"4573\" data-end=\"4595\" data-col-size=\"sm\">8\/20 \u00b5s (In \/ Imax)<\/td>\n<td data-start=\"4595\" data-end=\"4624\" data-col-size=\"sm\">1.2\/50 \u00b5s + 8\/20 \u00b5s (Uoc)<\/td>\n<\/tr>\n<tr data-start=\"4625\" data-end=\"4720\">\n<td data-start=\"4625\" data-end=\"4646\" data-col-size=\"sm\">Installation Point<\/td>\n<td data-start=\"4646\" data-end=\"4678\" data-col-size=\"sm\">Service Entrance \/ Main Board<\/td>\n<td data-start=\"4678\" data-end=\"4704\" data-col-size=\"sm\">Sub-distribution Boards<\/td>\n<td data-start=\"4704\" data-end=\"4720\" data-col-size=\"sm\">Point of Use<\/td>\n<\/tr>\n<tr data-start=\"4721\" data-end=\"4824\">\n<td data-start=\"4721\" data-end=\"4739\" data-col-size=\"sm\">Protection Goal<\/td>\n<td data-start=\"4739\" data-end=\"4766\" data-col-size=\"sm\">Direct Lightning Strikes<\/td>\n<td data-start=\"4766\" data-end=\"4799\" data-col-size=\"sm\">Indirect Lightning \/ Switching<\/td>\n<td data-start=\"4799\" data-end=\"4824\" data-col-size=\"sm\">Sensitive Electronics<\/td>\n<\/tr>\n<tr data-start=\"4825\" data-end=\"4884\">\n<td data-start=\"4825\" data-end=\"4843\" data-col-size=\"sm\">Energy Capacity<\/td>\n<td data-start=\"4843\" data-end=\"4860\" data-col-size=\"sm\">Extremely High<\/td>\n<td data-start=\"4860\" data-end=\"4877\" data-col-size=\"sm\">Medium to High<\/td>\n<td data-start=\"4877\" data-end=\"4884\" data-col-size=\"sm\">Low<\/td>\n<\/tr>\n<tr data-start=\"4885\" data-end=\"5002\">\n<td data-start=\"4885\" data-end=\"4900\" data-col-size=\"sm\">Mandatory If<\/td>\n<td data-start=\"4900\" data-end=\"4930\" data-col-size=\"sm\">Building has lightning rods<\/td>\n<td data-start=\"4930\" data-end=\"4967\" data-col-size=\"sm\">Recommended for most installations<\/td>\n<td data-start=\"4967\" data-end=\"5002\" data-col-size=\"sm\">Critical electronics protection<\/td>\n<\/tr>\n<tr data-start=\"5003\" data-end=\"5058\">\n<td data-start=\"5003\" data-end=\"5019\" data-col-size=\"sm\">LEEYEE Series<\/td>\n<td data-start=\"5019\" data-end=\"5034\" data-col-size=\"sm\">LY1-D, LY1-B<\/td>\n<td data-start=\"5034\" data-end=\"5049\" data-col-size=\"sm\">LY2-C, LY2-B<\/td>\n<td data-start=\"5049\" data-end=\"5058\" data-col-size=\"sm\">LY3-D<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<hr data-start=\"5060\" data-end=\"5063\" \/>\n<h2 data-start=\"5065\" data-end=\"5121\"><span class=\"ez-toc-section\" id=\"part-iv-coordination-cascading-%e2%80%93-the-10-meter-rule\"><\/span>Part IV: Coordination &amp; Cascading \u2013 The 10 Meter Rule<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"5123\" data-end=\"5222\">A common mistake is installing <strong data-start=\"5154\" data-end=\"5175\">only a Type 1 SPD<\/strong> and assuming the entire building is protected.<\/p>\n<p data-start=\"5224\" data-end=\"5261\">Surge protection must be <strong data-start=\"5249\" data-end=\"5260\">layered<\/strong>.<\/p>\n<h3 data-start=\"5263\" data-end=\"5291\"><span class=\"ez-toc-section\" id=\"why-coordination-matters\"><\/span>Why Coordination Matters<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"5293\" data-end=\"5352\">If Type 1 and Type 2 SPDs are installed too close together:<\/p>\n<ul data-start=\"5354\" data-end=\"5486\">\n<li data-start=\"5354\" data-end=\"5384\">\n<p data-start=\"5356\" data-end=\"5384\">Type 2 SPD may trigger first<\/p>\n<\/li>\n<li data-start=\"5385\" data-end=\"5442\">\n<p data-start=\"5387\" data-end=\"5442\">It will attempt to absorb high-energy lightning current<\/p>\n<\/li>\n<li data-start=\"5443\" data-end=\"5486\">\n<p data-start=\"5445\" data-end=\"5486\">This can <strong data-start=\"5454\" data-end=\"5486\">destroy the device instantly<\/strong><\/p>\n<\/li>\n<\/ul>\n<hr data-start=\"5488\" data-end=\"5491\" \/>\n<h3 data-start=\"5493\" data-end=\"5518\"><span class=\"ez-toc-section\" id=\"coordination-distance\"><\/span>Coordination Distance<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"5520\" data-end=\"5537\">Recommended rule:<\/p>\n<ul data-start=\"5539\" data-end=\"5621\">\n<li data-start=\"5539\" data-end=\"5621\">\n<p data-start=\"5541\" data-end=\"5621\">Maintain at least <strong data-start=\"5559\" data-end=\"5590\">10 meters of cable distance<\/strong> between Type 1 and Type 2 SPD.<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"5623\" data-end=\"5630\">Reason:<\/p>\n<ul data-start=\"5632\" data-end=\"5709\">\n<li data-start=\"5632\" data-end=\"5668\">\n<p data-start=\"5634\" data-end=\"5668\">Cable inductance creates impedance<\/p>\n<\/li>\n<li data-start=\"5669\" data-end=\"5709\">\n<p data-start=\"5671\" data-end=\"5709\">Ensures <strong data-start=\"5679\" data-end=\"5709\">Type 1 SPD activates first<\/strong><\/p>\n<\/li>\n<\/ul>\n<hr data-start=\"5711\" data-end=\"5714\" \/>\n<h3 data-start=\"5716\" data-end=\"5741\"><span class=\"ez-toc-section\" id=\"type-12-combined-spd\"><\/span>Type 1+2 Combined SPD<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"5743\" data-end=\"5800\">In compact installations where 10 meters is not possible:<\/p>\n<p data-start=\"5802\" data-end=\"5844\"><strong data-start=\"5802\" data-end=\"5844\">LEEYEE provides Type 1+2 combined SPDs<\/strong><\/p>\n<p data-start=\"5846\" data-end=\"5857\">Advantages:<\/p>\n<ul data-start=\"5859\" data-end=\"5949\">\n<li data-start=\"5859\" data-end=\"5882\">\n<p data-start=\"5861\" data-end=\"5882\">Internal coordination<\/p>\n<\/li>\n<li data-start=\"5883\" data-end=\"5907\">\n<p data-start=\"5885\" data-end=\"5907\">Compact modular design<\/p>\n<\/li>\n<li data-start=\"5908\" data-end=\"5949\">\n<p data-start=\"5910\" data-end=\"5949\">Handles both direct and indirect surges<\/p>\n<\/li>\n<\/ul>\n<hr data-start=\"5951\" data-end=\"5954\" \/>\n<h2 data-start=\"5956\" data-end=\"6013\"><span class=\"ez-toc-section\" id=\"part-v-b2b-sourcing-advantage-%e2%80%93-the-leeyee-difference\"><\/span>Part V: B2B Sourcing Advantage \u2013 The LEEYEE Difference<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"6015\" data-end=\"6073\">For professional buyers, supplier reliability is critical.<\/p>\n<h3 data-start=\"6075\" data-end=\"6094\"><span class=\"ez-toc-section\" id=\"risk-mitigation\"><\/span>Risk Mitigation<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"6096\" data-end=\"6112\">LEEYEE provides:<\/p>\n<p data-start=\"6114\" data-end=\"6141\"><strong data-start=\"6114\" data-end=\"6141\">Authentic Certification<\/strong><\/p>\n<ul data-start=\"6143\" data-end=\"6164\">\n<li data-start=\"6143\" data-end=\"6148\">\n<p data-start=\"6145\" data-end=\"6148\">TUV<\/p>\n<\/li>\n<li data-start=\"6149\" data-end=\"6153\">\n<p data-start=\"6151\" data-end=\"6153\">CB<\/p>\n<\/li>\n<li data-start=\"6154\" data-end=\"6158\">\n<p data-start=\"6156\" data-end=\"6158\">CE<\/p>\n<\/li>\n<li data-start=\"6159\" data-end=\"6164\">\n<p data-start=\"6161\" data-end=\"6164\">SAA<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"6166\" data-end=\"6202\">All certificates are <strong data-start=\"6187\" data-end=\"6201\">verifiable<\/strong>.<\/p>\n<p data-start=\"6204\" data-end=\"6229\"><strong data-start=\"6204\" data-end=\"6229\">PICC Global Insurance<\/strong><\/p>\n<p data-start=\"6231\" data-end=\"6306\">All products are insured by <strong data-start=\"6259\" data-end=\"6305\">People&#8217;s Insurance Company of China (PICC)<\/strong>.<\/p>\n<p data-start=\"6308\" data-end=\"6317\">Benefits:<\/p>\n<ul data-start=\"6319\" data-end=\"6379\">\n<li data-start=\"6319\" data-end=\"6341\">\n<p data-start=\"6321\" data-end=\"6341\">Financial protection<\/p>\n<\/li>\n<li data-start=\"6342\" data-end=\"6379\">\n<p data-start=\"6344\" data-end=\"6379\">Liability coverage for distributors<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"6381\" data-end=\"6410\"><strong data-start=\"6381\" data-end=\"6410\">Supply Chain Transparency<\/strong><\/p>\n<p data-start=\"6412\" data-end=\"6423\">We support:<\/p>\n<ul data-start=\"6425\" data-end=\"6490\">\n<li data-start=\"6425\" data-end=\"6441\">\n<p data-start=\"6427\" data-end=\"6441\">Factory audits<\/p>\n<\/li>\n<li data-start=\"6442\" data-end=\"6473\">\n<p data-start=\"6444\" data-end=\"6473\">Production inspection reports<\/p>\n<\/li>\n<li data-start=\"6474\" data-end=\"6490\">\n<p data-start=\"6476\" data-end=\"6490\">Testing videos<\/p>\n<\/li>\n<\/ul>\n<hr data-start=\"6492\" data-end=\"6495\" \/>\n<h3 data-start=\"6497\" data-end=\"6520\"><span class=\"ez-toc-section\" id=\"production-capacity\"><\/span>Production Capacity<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"6522\" data-end=\"6545\">Manufacturing strength:<\/p>\n<ul data-start=\"6547\" data-end=\"6623\">\n<li data-start=\"6547\" data-end=\"6569\">\n<p data-start=\"6549\" data-end=\"6569\"><strong data-start=\"6549\" data-end=\"6569\">8,000 m\u00b2 factory<\/strong><\/p>\n<\/li>\n<li data-start=\"6570\" data-end=\"6594\">\n<p data-start=\"6572\" data-end=\"6594\"><strong data-start=\"6572\" data-end=\"6594\">8 production lines<\/strong><\/p>\n<\/li>\n<li data-start=\"6595\" data-end=\"6623\">\n<p data-start=\"6597\" data-end=\"6623\">Stable delivery capability<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"6625\" data-end=\"6643\">Quality assurance:<\/p>\n<ul data-start=\"6645\" data-end=\"6720\">\n<li data-start=\"6645\" data-end=\"6683\">\n<p data-start=\"6647\" data-end=\"6683\">Professional surge testing equipment<\/p>\n<\/li>\n<li data-start=\"6684\" data-end=\"6720\">\n<p data-start=\"6686\" data-end=\"6720\">Strict batch inspection procedures<\/p>\n<\/li>\n<\/ul>\n<hr data-start=\"6722\" data-end=\"6725\" \/>\n<h2 data-start=\"6727\" data-end=\"6787\"><span class=\"ez-toc-section\" id=\"part-vi-procurement-guide-%e2%80%93-5-red-flags-when-buying-spds\"><\/span>Part VI: Procurement Guide \u2013 5 Red Flags When Buying SPDs<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"6789\" data-end=\"6846\">Professional buyers should watch for the following risks.<\/p>\n<h3 data-start=\"6848\" data-end=\"6873\"><span class=\"ez-toc-section\" id=\"1-fake-type-1-claims\"><\/span>1. Fake Type 1 Claims<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"6875\" data-end=\"6977\">If a supplier claims <strong data-start=\"6896\" data-end=\"6910\">Type 1 SPD<\/strong> but only provides <strong data-start=\"6929\" data-end=\"6944\">8\/20\u00b5s data<\/strong>, it is not a real Type 1 device.<\/p>\n<p data-start=\"6979\" data-end=\"7023\">Always demand <strong data-start=\"6993\" data-end=\"7022\">10\/350\u00b5s (Iimp) test data<\/strong>.<\/p>\n<hr data-start=\"7025\" data-end=\"7028\" \/>\n<h3 data-start=\"7030\" data-end=\"7058\"><span class=\"ez-toc-section\" id=\"2-no-thermal-protection\"><\/span>2. No Thermal Protection<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"7060\" data-end=\"7112\">Low-quality SPDs may lack <strong data-start=\"7086\" data-end=\"7111\">thermal disconnectors<\/strong>.<\/p>\n<p data-start=\"7114\" data-end=\"7119\">Risk:<\/p>\n<ul data-start=\"7121\" data-end=\"7162\">\n<li data-start=\"7121\" data-end=\"7138\">\n<p data-start=\"7123\" data-end=\"7138\">MOV overheating<\/p>\n<\/li>\n<li data-start=\"7139\" data-end=\"7162\">\n<p data-start=\"7141\" data-end=\"7162\">Potential fire hazard<\/p>\n<\/li>\n<\/ul>\n<hr data-start=\"7164\" data-end=\"7167\" \/>\n<h3 data-start=\"7169\" data-end=\"7205\"><span class=\"ez-toc-section\" id=\"3-high-voltage-protection-level\"><\/span>3. High Voltage Protection Level<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"7207\" data-end=\"7279\">If <strong data-start=\"7210\" data-end=\"7224\">Up &gt; 2.5kV<\/strong> for a <strong data-start=\"7231\" data-end=\"7246\">230V system<\/strong>, protection may be insufficient.<\/p>\n<p data-start=\"7281\" data-end=\"7293\">Recommended:<\/p>\n<p data-start=\"7295\" data-end=\"7309\"><strong data-start=\"7295\" data-end=\"7309\">Up &lt; 1.5kV<\/strong><\/p>\n<hr data-start=\"7311\" data-end=\"7314\" \/>\n<h3 data-start=\"7316\" data-end=\"7340\"><span class=\"ez-toc-section\" id=\"4-fake-certificates\"><\/span>4. Fake Certificates<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"7342\" data-end=\"7356\">Always verify:<\/p>\n<ul data-start=\"7358\" data-end=\"7408\">\n<li data-start=\"7358\" data-end=\"7378\">\n<p data-start=\"7360\" data-end=\"7378\">Certificate number<\/p>\n<\/li>\n<li data-start=\"7379\" data-end=\"7408\">\n<p data-start=\"7381\" data-end=\"7408\">Certification body database<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"7410\" data-end=\"7473\">Avoid suppliers providing only <strong data-start=\"7441\" data-end=\"7472\">logos without documentation<\/strong>.<\/p>\n<hr data-start=\"7475\" data-end=\"7478\" \/>\n<h3 data-start=\"7480\" data-end=\"7517\"><span class=\"ez-toc-section\" id=\"5-no-product-liability-insurance\"><\/span>5. No Product Liability Insurance<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"7519\" data-end=\"7588\">Without insurance, distributors bear <strong data-start=\"7556\" data-end=\"7587\">all risk of product failure<\/strong>.<\/p>\n<p data-start=\"7590\" data-end=\"7642\">LEEYEE provides <strong data-start=\"7606\" data-end=\"7641\">PICC product liability coverage<\/strong>.<\/p>\n<hr data-start=\"7644\" data-end=\"7647\" \/>\n<h2 data-start=\"7649\" data-end=\"7684\"><span class=\"ez-toc-section\" id=\"frequently-asked-questions-faq\"><\/span>Frequently Asked Questions (FAQ)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3 data-start=\"7686\" data-end=\"7745\"><span class=\"ez-toc-section\" id=\"do-i-need-a-type-1-spd-if-i-dont-have-a-lightning-rod\"><\/span>Do I need a Type 1 SPD if I don&#8217;t have a lightning rod?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"7747\" data-end=\"7758\">Usually no.<\/p>\n<p data-start=\"7760\" data-end=\"7885\">If there is no external lightning protection and no overhead lines, <strong data-start=\"7828\" data-end=\"7884\">Type 2 SPD at the main board is typically sufficient<\/strong>.<\/p>\n<p data-start=\"7887\" data-end=\"7968\">However, for critical infrastructure, <strong data-start=\"7925\" data-end=\"7967\">Type 1+2 combined SPDs are recommended<\/strong>.<\/p>\n<hr data-start=\"7970\" data-end=\"7973\" \/>\n<h3 data-start=\"7975\" data-end=\"8024\"><span class=\"ez-toc-section\" id=\"what-is-the-difference-between-iimp-and-imax\"><\/span>What is the difference between Iimp and Imax?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"8026\" data-end=\"8034\"><strong data-start=\"8026\" data-end=\"8034\">Iimp<\/strong><\/p>\n<ul data-start=\"8036\" data-end=\"8110\">\n<li data-start=\"8036\" data-end=\"8061\">\n<p data-start=\"8038\" data-end=\"8061\">Used for <strong data-start=\"8047\" data-end=\"8061\">Type 1 SPD<\/strong><\/p>\n<\/li>\n<li data-start=\"8062\" data-end=\"8081\">\n<p data-start=\"8064\" data-end=\"8081\">10\/350\u00b5s waveform<\/p>\n<\/li>\n<li data-start=\"8082\" data-end=\"8110\">\n<p data-start=\"8084\" data-end=\"8110\">Simulates direct lightning<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"8112\" data-end=\"8120\"><strong data-start=\"8112\" data-end=\"8120\">Imax<\/strong><\/p>\n<ul data-start=\"8122\" data-end=\"8193\">\n<li data-start=\"8122\" data-end=\"8147\">\n<p data-start=\"8124\" data-end=\"8147\">Used for <strong data-start=\"8133\" data-end=\"8147\">Type 2 SPD<\/strong><\/p>\n<\/li>\n<li data-start=\"8148\" data-end=\"8165\">\n<p data-start=\"8150\" data-end=\"8165\">8\/20\u00b5s waveform<\/p>\n<\/li>\n<li data-start=\"8166\" data-end=\"8193\">\n<p data-start=\"8168\" data-end=\"8193\">Simulates indirect surges<\/p>\n<\/li>\n<\/ul>\n<hr data-start=\"8195\" data-end=\"8198\" \/>\n<h3 data-start=\"8200\" data-end=\"8232\"><span class=\"ez-toc-section\" id=\"can-i-use-only-a-type-1-spd\"><\/span>Can I use only a Type 1 SPD?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"8234\" data-end=\"8237\">No.<\/p>\n<p data-start=\"8239\" data-end=\"8307\">Type 1 SPDs handle <strong data-start=\"8258\" data-end=\"8268\">energy<\/strong>, but residual voltage may remain high.<\/p>\n<p data-start=\"8309\" data-end=\"8374\">A <strong data-start=\"8311\" data-end=\"8336\">Type 2 SPD downstream<\/strong> is required to clamp voltage further.<\/p>\n<hr data-start=\"8376\" data-end=\"8379\" \/>\n<h3 data-start=\"8381\" data-end=\"8419\"><span class=\"ez-toc-section\" id=\"how-often-should-spds-be-replaced\"><\/span>How often should SPDs be replaced?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"8421\" data-end=\"8461\">Most SPDs include <strong data-start=\"8439\" data-end=\"8460\">status indicators<\/strong>.<\/p>\n<ul data-start=\"8463\" data-end=\"8493\">\n<li data-start=\"8463\" data-end=\"8478\">\n<p data-start=\"8465\" data-end=\"8478\">Green: normal<\/p>\n<\/li>\n<li data-start=\"8479\" data-end=\"8493\">\n<p data-start=\"8481\" data-end=\"8493\">Red: replace<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"8495\" data-end=\"8521\">Inspection is recommended:<\/p>\n<ul data-start=\"8523\" data-end=\"8564\">\n<li data-start=\"8523\" data-end=\"8533\">\n<p data-start=\"8525\" data-end=\"8533\">Annually<\/p>\n<\/li>\n<li data-start=\"8534\" data-end=\"8564\">\n<p data-start=\"8536\" data-end=\"8564\">After major lightning events<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"8566\" data-end=\"8625\">LEEYEE SPDs allow <strong data-start=\"8584\" data-end=\"8607\">modular replacement<\/strong> without rewiring.<\/p>\n<hr data-start=\"8627\" data-end=\"8630\" \/>\n<h3 data-start=\"8632\" data-end=\"8668\"><span class=\"ez-toc-section\" id=\"what-is-a-31-spd-configuration\"><\/span>What is a 3+1 SPD configuration?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"8670\" data-end=\"8686\">In a 4-pole SPD:<\/p>\n<ul data-start=\"8688\" data-end=\"8799\">\n<li data-start=\"8688\" data-end=\"8734\">\n<p data-start=\"8690\" data-end=\"8734\">Three MOVs protect <strong data-start=\"8709\" data-end=\"8734\">L1, L2, L3 to Neutral<\/strong><\/p>\n<\/li>\n<li data-start=\"8735\" data-end=\"8799\">\n<p data-start=\"8737\" data-end=\"8799\">One <strong data-start=\"8741\" data-end=\"8769\">Gas Discharge Tube (GDT)<\/strong> protects <strong data-start=\"8779\" data-end=\"8799\">Neutral to Earth<\/strong><\/p>\n<\/li>\n<\/ul>\n<p data-start=\"8801\" data-end=\"8863\">This configuration is recommended for <strong data-start=\"8839\" data-end=\"8862\">TT and TN-S systems<\/strong>.<\/p>\n<hr data-start=\"8865\" data-end=\"8868\" \/>\n<h3 data-start=\"8870\" data-end=\"8904\"><span class=\"ez-toc-section\" id=\"does-leeyee-support-oem-odm\"><\/span>Does LEEYEE support OEM \/ ODM?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"8906\" data-end=\"8910\">Yes.<\/p>\n<p data-start=\"8912\" data-end=\"8964\">We offer <strong data-start=\"8921\" data-end=\"8952\">free customization services<\/strong>, including:<\/p>\n<ul data-start=\"8966\" data-end=\"9016\">\n<li data-start=\"8966\" data-end=\"8981\">\n<p data-start=\"8968\" data-end=\"8981\">Logo printing<\/p>\n<\/li>\n<li data-start=\"8982\" data-end=\"8997\">\n<p data-start=\"8984\" data-end=\"8997\">Product color<\/p>\n<\/li>\n<li data-start=\"8998\" data-end=\"9016\">\n<p data-start=\"9000\" data-end=\"9016\">Packaging design<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"9018\" data-end=\"9073\">Helping distributors build their <strong data-start=\"9051\" data-end=\"9072\">own private brand<\/strong>.<\/p>\n<hr data-start=\"9075\" data-end=\"9078\" \/>\n<h2 data-start=\"9080\" data-end=\"9093\"><span class=\"ez-toc-section\" id=\"conclusion\"><\/span>Conclusion<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"9095\" data-end=\"9197\">Choosing the correct SPD type is a <strong data-start=\"9130\" data-end=\"9196\">small investment that prevents catastrophic electrical failure<\/strong>.<\/p>\n<p data-start=\"9199\" data-end=\"9268\">By partnering with <strong data-start=\"9218\" data-end=\"9238\">LEEYEE Electrics<\/strong>, distributors gain access to:<\/p>\n<ul data-start=\"9270\" data-end=\"9383\">\n<li data-start=\"9270\" data-end=\"9308\">\n<p data-start=\"9272\" data-end=\"9308\">Advanced surge protection technology<\/p>\n<\/li>\n<li data-start=\"9309\" data-end=\"9349\">\n<p data-start=\"9311\" data-end=\"9349\">Authentic international certifications<\/p>\n<\/li>\n<li data-start=\"9350\" data-end=\"9383\">\n<p data-start=\"9352\" data-end=\"9383\">Reliable manufacturing capacity<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"9385\" data-end=\"9471\">Contact us today to discuss <strong data-start=\"9413\" data-end=\"9470\">wholesale cooperation and private label opportunities<\/strong>.<\/p>\n<hr \/>\n<p><a href=\"https:\/\/www.cnspd.com\/download-category\/all\/\"><img fetchpriority=\"high\" decoding=\"async\" class=\"aligncenter wp-image-26994 size-full\" src=\"https:\/\/www.cnspd.com\/wp-content\/uploads\/2024\/12\/BookCover-3.jpg\" alt=\"SPD catalog\" width=\"600\" height=\"408\" srcset=\"https:\/\/www.cnspd.com\/wp-content\/uploads\/2024\/12\/BookCover-3.jpg 600w, https:\/\/www.cnspd.com\/wp-content\/uploads\/2024\/12\/BookCover-3-150x102.jpg 150w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/a><br \/>\n<script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Do I need a Type 1 SPD if I don't have a lightning rod?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Usually, no. If your building has no external lightning protection and is not fed by overhead lines in a high-lightning area, a Type 2 SPD at the main board is often sufficient. However, for critical infrastructure, a Type 1+2 combined unit is always the safest choice.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the difference between Iimp and Imax?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Iimp (10\/350\u00b5s) is for Type 1 SPDs (direct strikes). Imax (8\/20\u00b5s) is for Type 2 SPDs (indirect strikes). Iimp carries significantly more energy than Imax.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I use a Type 1 SPD alone?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"No. A Type 1 SPD handles the energy but often has a higher 'let-through' voltage. You need a Type 2 SPD downstream to further clamp the voltage to a level safe for your equipment.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How often should I replace an SPD?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Most SPDs have a visual indicator (Green = OK, Red = Replace). They should be inspected annually or after any major lightning event. LEEYEE's modular design allows you to replace just the failed module without rewiring the entire base.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the '3+1' configuration?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"In a 4-pole SPD, the 3+1 configuration means three MOVs protect L1, L2, and L3 against Neutral, and one high-capacity GDT protects Neutral against Earth. This is the safest configuration for TT and TN-S systems.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Does LEEYEE support OEM\/ODM?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. We offer Free Custom Design for your logo, color appearance, and packaging, allowing you to build your own premium brand with our TUV-certified technology.\"\n      }\n    }\n  ]\n}\n<\/script><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Introduction Dans le paysage \u00e9lectrique moderne, o\u00f9 les infrastructures sont de plus en plus interconnect\u00e9es et sensibles, le dispositif de protection contre les surtensions (DPS) est pass\u00e9 d'un luxe \u00e0 une n\u00e9cessit\u00e9 non n\u00e9gociable. Pour les installations industrielles, les complexes commerciaux et les centres de donn\u00e9es critiques, le choix entre les parafoudres de type 1, de type 2 et de type 3 peut d\u00e9terminer si un syst\u00e8me reste r\u00e9silient ou...<\/p>","protected":false},"author":18,"featured_media":25946,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1,488,422],"tags":[],"class_list":["post-27036","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","category-surge-protection","category-industry-news"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Type 1 vs Type 2 vs Type 3 SPD: The Definitive Whitepaper for Global Surge Protection<\/title>\n<meta name=\"description\" content=\"What is a Type 1 SPD? This whitepaper provides a deep technical comparison of Type 1, Type 2, and Type 3 SPDs, explaining 10\/350\u00b5s vs 8\/20\u00b5s waveforms, coordination principles, and B2B sourcing insights for LEEYEE&#039;s TUV-certified, PICC-insured surge protection.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.cnspd.com\/fr\/spd-type-1-vs-type-2-vs-type-3\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Type 1 vs Type 2 vs Type 3 SPD: The Definitive Whitepaper for Global Surge Protection\" \/>\n<meta property=\"og:description\" content=\"What is a Type 1 SPD? This whitepaper provides a deep technical comparison of Type 1, Type 2, and Type 3 SPDs, explaining 10\/350\u00b5s vs 8\/20\u00b5s waveforms, coordination principles, and B2B sourcing insights for LEEYEE&#039;s TUV-certified, PICC-insured surge protection.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.cnspd.com\/fr\/spd-type-1-vs-type-2-vs-type-3\/\" \/>\n<meta property=\"og:site_name\" content=\"Surge Protector, Surge Arrestor, Isolating Switch - LEEYEE\" \/>\n<meta property=\"article:published_time\" content=\"2024-12-30T10:37:41+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-04-13T05:08:20+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.cnspd.com\/wp-content\/uploads\/2024\/06\/\u56fe\u5c4214.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1000\" \/>\n\t<meta property=\"og:image:height\" content=\"1000\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Devin Ling\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"Devin Ling\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"6 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.cnspd.com\/spd-type1-vs-type2-vs-type-3\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.cnspd.com\/spd-type1-vs-type2-vs-type-3\/\"},\"author\":{\"name\":\"Devin Ling\",\"@id\":\"https:\/\/www.cnspd.com\/#\/schema\/person\/f49dbafe62c5b47100ad2d9f88af92d3\"},\"headline\":\"Type 1 vs Type 2 vs Type 3 SPD: The Definitive Whitepaper for Global Surge Protection\",\"datePublished\":\"2024-12-30T10:37:41+00:00\",\"dateModified\":\"2026-04-13T05:08:20+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.cnspd.com\/spd-type1-vs-type2-vs-type-3\/\"},\"wordCount\":1111,\"image\":{\"@id\":\"https:\/\/www.cnspd.com\/spd-type1-vs-type2-vs-type-3\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.cnspd.com\/wp-content\/uploads\/2024\/06\/\u56fe\u5c4214.jpg\",\"articleSection\":[\"News\",\"Surge Protection\",\"Technical Guides\"],\"inLanguage\":\"fr-FR\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.cnspd.com\/spd-type1-vs-type2-vs-type-3\/\",\"url\":\"https:\/\/www.cnspd.com\/spd-type1-vs-type2-vs-type-3\/\",\"name\":\"Type 1 vs Type 2 vs Type 3 SPD: The Definitive Whitepaper for Global Surge Protection\",\"isPartOf\":{\"@id\":\"https:\/\/www.cnspd.com\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.cnspd.com\/spd-type1-vs-type2-vs-type-3\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.cnspd.com\/spd-type1-vs-type2-vs-type-3\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.cnspd.com\/wp-content\/uploads\/2024\/06\/\u56fe\u5c4214.jpg\",\"datePublished\":\"2024-12-30T10:37:41+00:00\",\"dateModified\":\"2026-04-13T05:08:20+00:00\",\"author\":{\"@id\":\"https:\/\/www.cnspd.com\/#\/schema\/person\/f49dbafe62c5b47100ad2d9f88af92d3\"},\"description\":\"What is a Type 1 SPD? 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