{"id":3247,"date":"2019-09-16T06:19:25","date_gmt":"2019-09-16T06:19:25","guid":{"rendered":"http:\/\/aban.vn\/tai-sao-can-lap-dat-thiet-bi-chong-set-lan-truyen-spd\/"},"modified":"2020-09-29T06:58:49","modified_gmt":"2020-09-29T06:58:49","slug":"why-we-need-to-install-surge-protection-devices-spd","status":"publish","type":"post","link":"http:\/\/aban.vn\/en\/why-we-need-to-install-surge-protection-devices-spd\/","title":{"rendered":"WHY DO WE NEED TO INSTALL SURGE PROTECTION DEVICES (SPD)?"},"content":{"rendered":"\n<p>&nbsp;<\/p>\n<p><span style=\"font-size: 16px;\">According to the US Institure of Lightning Safety: \u201cSurge is one of major cause damage to electrical equipments such as overheated transformers, broken power lines, getting fire or human damage in the worst case.\u201d Each surge event can destruct up to trillions dong.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-size: 16px;\"><strong>What is surge?<\/strong><\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-size: 16px;\">Surges, or transients, are brief over voltage spikes or disturbances on a power waveform that can damage, degrade, or destroy electronic equipment within any home, commercial building, industrial, or manufacturing facility.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-size: 16px;\">And surge can originate from many sources:<\/span><\/p>\n<p>&nbsp;<\/p>\n<ul>\n<li><span style=\"font-size: 16px;\">House or manufacturing place nearby lightning area.<\/span><\/li>\n<li><span style=\"font-size: 16px;\">The switching (on and off) and operation of certain electrical loads such as lamp, heat system, motor, laser printer, photocopy machine\u2026 \u2013 whether due to intentional or unintentional operations \u2013 can be a source of surges in the electrical system.<\/span><\/li>\n<li><span style=\"font-size: 16px;\">The outside wires are broken.<\/span><\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-container-2 wp-block-gallery-1 wp-block-gallery columns-3 is-cropped\"><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" width=\"700\" height=\"413\" src=\"http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/chay-no-ra-tai-nha-may-hoa-dau-o-mien-nam-iran_2.jpg\" alt=\"\" data-id=\"3168\" data-link=\"http:\/\/aban.vn\/?attachment_id=3168\" class=\"wp-image-3168\" srcset=\"http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/chay-no-ra-tai-nha-may-hoa-dau-o-mien-nam-iran_2.jpg 700w, http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/chay-no-ra-tai-nha-may-hoa-dau-o-mien-nam-iran_2-300x177.jpg 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" width=\"500\" height=\"375\" src=\"http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/tu-lanh-1501497588470_IAHS.jpg\" alt=\"\" data-id=\"3170\" data-link=\"http:\/\/aban.vn\/?attachment_id=3170\" class=\"wp-image-3170\" srcset=\"http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/tu-lanh-1501497588470_IAHS.jpg 500w, http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/tu-lanh-1501497588470_IAHS-300x225.jpg 300w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" width=\"1024\" height=\"768\" src=\"http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/transienten-1-1024x768.png\" alt=\"\" data-id=\"3166\" data-link=\"http:\/\/aban.vn\/?attachment_id=3166\" class=\"wp-image-3166\" srcset=\"http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/transienten-1-1024x768.png 1024w, http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/transienten-1-300x225.png 300w, http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/transienten-1-768x576.png 768w, http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/transienten-1.png 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" width=\"567\" height=\"291\" src=\"http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/3010_02.jpg\" alt=\"\" data-id=\"3119\" data-link=\"http:\/\/aban.vn\/?attachment_id=3119\" class=\"wp-image-3119\" srcset=\"http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/3010_02.jpg 567w, http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/3010_02-300x154.jpg 300w\" sizes=\"(max-width: 567px) 100vw, 567px\" \/><\/figure><\/li><\/ul>\n\n\n\n<div style=\"width: 1170px;\" class=\"wp-video\"><!--[if lt IE 9]><script>document.createElement('video');<\/script><![endif]-->\n<video class=\"wp-video-shortcode\" id=\"video-3247-1\" width=\"1170\" height=\"658\" preload=\"metadata\" controls=\"controls\"><source type=\"video\/mp4\" src=\"http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/SURGEFREE-ABAN-_-NH\u1eeeNG-\u0110I\u1ec0U-C\u1ea6N-BI\u1ebeT-V\u1ec0-S\u00c9T-LAN-TRUY\u1ec0N-_-SPD.mp4?_=1\" \/><a href=\"http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/SURGEFREE-ABAN-_-NH\u1eeeNG-\u0110I\u1ec0U-C\u1ea6N-BI\u1ebeT-V\u1ec0-S\u00c9T-LAN-TRUY\u1ec0N-_-SPD.mp4\">http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/SURGEFREE-ABAN-_-NH\u1eeeNG-\u0110I\u1ec0U-C\u1ea6N-BI\u1ebeT-V\u1ec0-S\u00c9T-LAN-TRUY\u1ec0N-_-SPD.mp4<\/a><\/video><\/div>\n\n\n\n<p><em><strong>How does lightning strike cause surge?<\/strong><\/em><\/p>\n<p>&nbsp;<\/p>\n<p>As reported by the Earth Physics Institute, Vietnam get 2 million lightning strikes per year. Vietnam is located in the center of Asia thunderstorms, one of three strongest one in the world.<\/p>\n<p>Vietnam thunderstorm season is relatively long starting form April and ending in October.<\/p>\n\n\n\n<ul class=\"wp-container-4 wp-block-gallery-3 wp-block-gallery columns-2 is-cropped\"><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" width=\"582\" height=\"508\" src=\"http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/lightning-map-in-vietnam.png\" alt=\"\" data-id=\"3127\" data-link=\"http:\/\/aban.vn\/?attachment_id=3127\" class=\"wp-image-3127\" srcset=\"http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/lightning-map-in-vietnam.png 582w, http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/lightning-map-in-vietnam-300x262.png 300w\" sizes=\"(max-width: 582px) 100vw, 582px\" \/><figcaption>Lightning pollution in Vi\u1ec7t Nam 2016<\/figcaption><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" width=\"581\" height=\"409\" src=\"http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/lightning-map-in-vietnam-with-directary.png\" alt=\"\" data-id=\"3125\" data-link=\"http:\/\/aban.vn\/?attachment_id=3125\" class=\"wp-image-3125\" srcset=\"http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/lightning-map-in-vietnam-with-directary.png 581w, http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/lightning-map-in-vietnam-with-directary-300x211.png 300w, http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/lightning-map-in-vietnam-with-directary-170x120.png 170w\" sizes=\"(max-width: 581px) 100vw, 581px\" \/><figcaption>lightpollutionmap.info<\/figcaption><\/figure><\/li><\/ul>\n\n\n<p>Lightning is a naturally occurring electrostatic discharge between two electrically charged regions in the atmosphere or ground temporarily equalize themselves. The velocity of lightning is up to 36.000km\/s because of ions rapid movement. We usually catch the brilliant flashes before the thundering because the sound speed moves at 1.230 km\/h and the light speed travels at 299.792 km\/h in normal air condition.<\/p>\n<p><\/p>\n<p>Lightning can reach the temperature of 30,000\u00b0C, 20 times the temperature needed to turn silica into glass (it only takes 1330\u00b0C to melt SiO2).<\/p>\n\n\n<ul class=\"wp-container-6 wp-block-gallery-5 wp-block-gallery columns-3 is-cropped\"><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" width=\"640\" height=\"452\" src=\"http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/khoanh-khac-co-102-khi-thien-loi-noi-gian-tren-toan-trai-dat-2.jpg\" alt=\"\" data-id=\"3129\" data-link=\"http:\/\/aban.vn\/?attachment_id=3129\" class=\"wp-image-3129\" srcset=\"http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/khoanh-khac-co-102-khi-thien-loi-noi-gian-tren-toan-trai-dat-2.jpg 640w, http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/khoanh-khac-co-102-khi-thien-loi-noi-gian-tren-toan-trai-dat-2-300x212.jpg 300w, http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/khoanh-khac-co-102-khi-thien-loi-noi-gian-tren-toan-trai-dat-2-170x120.jpg 170w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" width=\"640\" height=\"480\" src=\"http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/khoanh-khac-co-102-khi-thien-loi-noi-gian-tren-toan-trai-dat-3.jpg\" alt=\"\" data-id=\"3131\" data-link=\"http:\/\/aban.vn\/?attachment_id=3131\" class=\"wp-image-3131\" srcset=\"http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/khoanh-khac-co-102-khi-thien-loi-noi-gian-tren-toan-trai-dat-3.jpg 640w, http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/khoanh-khac-co-102-khi-thien-loi-noi-gian-tren-toan-trai-dat-3-300x225.jpg 300w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" width=\"660\" height=\"504\" src=\"http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/Sydney2_TMUH.jpg\" alt=\"\" data-id=\"3135\" data-link=\"http:\/\/aban.vn\/?attachment_id=3135\" class=\"wp-image-3135\" srcset=\"http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/Sydney2_TMUH.jpg 660w, http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/Sydney2_TMUH-300x229.jpg 300w\" sizes=\"(max-width: 660px) 100vw, 660px\" \/><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" width=\"900\" height=\"600\" src=\"http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/landmark-81-ho-chi-minh-city-tan-le.jpg\" alt=\"\" data-id=\"3133\" data-link=\"http:\/\/aban.vn\/?attachment_id=3133\" class=\"wp-image-3133\" srcset=\"http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/landmark-81-ho-chi-minh-city-tan-le.jpg 900w, http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/landmark-81-ho-chi-minh-city-tan-le-300x200.jpg 300w, http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/landmark-81-ho-chi-minh-city-tan-le-768x512.jpg 768w\" sizes=\"(max-width: 900px) 100vw, 900px\" \/><\/figure><\/li><\/ul>\n\n\n\n<p>The Air discharge of lightning will be producing a wide range of magnetic field which the radius up to thousands of meters. High amperage of lightning generate a rapid but extremely strong transient magnetic field, and the closer the center of lightning is the greater the damage.<\/p>\n<p>&nbsp;<\/p>\n<p>Although the lightning does not hit electrical equipment directly, the power surge still causes damage to devices. Therefore, surge protection should be taken to protect those from direct lightning strikes as well as transient.<\/p>\n\n\n\n<ul class=\"wp-container-8 wp-block-gallery-7 wp-block-gallery columns-1 is-cropped\"><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" width=\"1024\" height=\"696\" src=\"http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/tac-dong-cua-set-toi-cong-trinh_anh-6-1500x844-1024x696.jpg\" alt=\"\" data-id=\"3143\" data-link=\"http:\/\/aban.vn\/?attachment_id=3143\" class=\"wp-image-3143\" srcset=\"http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/tac-dong-cua-set-toi-cong-trinh_anh-6-1500x844-1024x696.jpg 1024w, http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/tac-dong-cua-set-toi-cong-trinh_anh-6-1500x844-300x204.jpg 300w, http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/tac-dong-cua-set-toi-cong-trinh_anh-6-1500x844-768x522.jpg 768w, http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/tac-dong-cua-set-toi-cong-trinh_anh-6-1500x844.jpg 1242w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/li><\/ul>\n\n\n\n<p><em><strong>How to prevent surge?<\/strong><\/em><\/p>\n<p>Beside preventing lightning directly by devices such as lightning rods and grounding systems, we must also prevent surge by surge protection devices.<\/p>\n<p><br>Surge protective device (SPD) is divided into 3 types (Type) based on IEC 61643-11 standard and EN 61643-11 standard according to 3 different levels of testing (Class):<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Type 1 SPD<\/strong><br>It protects electrical installations against direct lightning strokes. It can discharge the back-current from lightning spreading from the earth conductor to the network conductors.<\/p>\n<p><br>Type 1 SPD is characterized by a 10\/350 \u00b5s current wave.<\/p>\n<p><br>This type is also called primary protection: installed at building having lightning rod.<\/p>\n<p><br><strong>Type 2 SPD<\/strong> <br>The Type 2 SPD is the main protection system for all low voltage electrical installations. Installed in each electrical switchboard, it prevents the spread of over voltages in the electrical installations and protects the loads.<\/p>\n<p><br>Type 2 SPD is characterized by an 8\/20 \u00b5s current wave.<\/p>\n<p><br>This type is also called secondary protection: installed at places absent lightning rod.<\/p>\n<p><br><strong>Type 3 SPD<\/strong> <br>These SPDs have a low discharge capacity. They must therefore mandatory be installed as a supplement to Type 2 SPD and in the vicinity of sensitive loads.<\/p>\n<p><br>Type 3 SPD is characterized by a combination of voltage waves (1.2\/50 \u03bcs) and current waves (8\/20 \u03bcs).<\/p>\n<p><br>These type 3 devices are terminal protection: installed for camera, television, phone\u2026<\/p>\n\n\n\n<ul class=\"wp-container-10 wp-block-gallery-9 wp-block-gallery columns-3 is-cropped\"><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" width=\"798\" height=\"798\" src=\"http:\/\/aban.vn\/wp-content\/uploads\/2018\/12\/COAXIAL-PROTECTION.gif\" alt=\"\" data-id=\"440\" data-link=\"http:\/\/aban.vn\/coaxial-protection\/\" class=\"wp-image-440\"\/><figcaption>Signal SPD<\/figcaption><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" width=\"798\" height=\"798\" src=\"http:\/\/aban.vn\/wp-content\/uploads\/2018\/12\/Class-I-II-zero.gif\" alt=\"\" data-id=\"444\" data-link=\"http:\/\/aban.vn\/class-i-ii-zero\/\" class=\"wp-image-444\"\/><figcaption>SPD Class I &amp; II<\/figcaption><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" width=\"798\" height=\"798\" src=\"http:\/\/aban.vn\/wp-content\/uploads\/2018\/12\/Class-II-SZK040.gif\" alt=\"\" data-id=\"451\" data-link=\"http:\/\/aban.vn\/class-ii-szk040\/\" class=\"wp-image-451\"\/><figcaption>SPD Class II<\/figcaption><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" width=\"1024\" height=\"1024\" src=\"http:\/\/aban.vn\/wp-content\/uploads\/2018\/12\/DT40_2753VT-1024x1024.jpg\" alt=\"\" data-id=\"322\" data-link=\"http:\/\/aban.vn\/dt40_2753vt\/\" class=\"wp-image-322\" srcset=\"http:\/\/aban.vn\/wp-content\/uploads\/2018\/12\/DT40_2753VT-1024x1024.jpg 1024w, http:\/\/aban.vn\/wp-content\/uploads\/2018\/12\/DT40_2753VT-150x150.jpg 150w, http:\/\/aban.vn\/wp-content\/uploads\/2018\/12\/DT40_2753VT-300x300.jpg 300w, http:\/\/aban.vn\/wp-content\/uploads\/2018\/12\/DT40_2753VT-768x768.jpg 768w, http:\/\/aban.vn\/wp-content\/uploads\/2018\/12\/DT40_2753VT-345x345.jpg 345w, http:\/\/aban.vn\/wp-content\/uploads\/2018\/12\/DT40_2753VT-50x50.jpg 50w, http:\/\/aban.vn\/wp-content\/uploads\/2018\/12\/DT40_2753VT-200x200.jpg 200w, http:\/\/aban.vn\/wp-content\/uploads\/2018\/12\/DT40_2753VT.jpg 1440w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption>SPD<\/figcaption><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" width=\"1024\" height=\"682\" src=\"http:\/\/aban.vn\/wp-content\/uploads\/2018\/12\/SHD-RJ45-POE-1024x682.png\" alt=\"\" data-id=\"298\" data-link=\"http:\/\/aban.vn\/shd-rj45-poe\/\" class=\"wp-image-298\" srcset=\"http:\/\/aban.vn\/wp-content\/uploads\/2018\/12\/SHD-RJ45-POE-1024x682.png 1024w, http:\/\/aban.vn\/wp-content\/uploads\/2018\/12\/SHD-RJ45-POE-300x200.png 300w, http:\/\/aban.vn\/wp-content\/uploads\/2018\/12\/SHD-RJ45-POE-768x511.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption>Signal &amp; Data SPD <\/figcaption><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" width=\"1024\" height=\"872\" src=\"http:\/\/aban.vn\/wp-content\/uploads\/2018\/12\/SC040-380Y-1024x872.jpg\" alt=\"\" data-id=\"294\" data-link=\"http:\/\/aban.vn\/sc040-380y\/\" class=\"wp-image-294\" srcset=\"http:\/\/aban.vn\/wp-content\/uploads\/2018\/12\/SC040-380Y-1024x872.jpg 1024w, http:\/\/aban.vn\/wp-content\/uploads\/2018\/12\/SC040-380Y-300x255.jpg 300w, http:\/\/aban.vn\/wp-content\/uploads\/2018\/12\/SC040-380Y-768x654.jpg 768w, http:\/\/aban.vn\/wp-content\/uploads\/2018\/12\/SC040-380Y.jpg 1357w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption>SPD for MCCB<\/figcaption><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" width=\"677\" height=\"335\" src=\"http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/vi-tri-lap-dat-chong-set.jpg\" alt=\"\" data-id=\"3145\" data-link=\"http:\/\/aban.vn\/?attachment_id=3145\" class=\"wp-image-3145\" srcset=\"http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/vi-tri-lap-dat-chong-set.jpg 677w, http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/vi-tri-lap-dat-chong-set-300x148.jpg 300w\" sizes=\"(max-width: 677px) 100vw, 677px\" \/><figcaption>Protection Syste<\/figcaption><\/figure><\/li><\/ul>\n\n\n<h4><em><strong><b>SPD normative definition<\/b>:<\/strong><\/em><\/h4>\n<table style=\"height: 390px; border-color: #121010; border-style: inset; background-color: #ffffff;\" border=\"1\">\n<caption>&nbsp;<\/caption>\n<tbody>\n<tr style=\"border-color: #ff7070; background-color: #b0b3ff;\">\n<td style=\"height: 65px; width: 168.267px;\">\n<p><\/p>\n<\/td>\n<td style=\"height: 65px; width: 133.833px;\">\n<p style=\"text-align: center;\">Direct lightning stroke<\/p>\n<\/td>\n<td style=\"height: 65px; width: 255.667px;\" colspan=\"2\">\n<p style=\"text-align: center;\">Indirect lightning stroke<\/p>\n<\/td>\n<\/tr>\n<tr style=\"background-color: #e0e0ff;\">\n<td style=\"height: 65px; width: 168.267px; background-color: #b0b3ff;\">\n<p>IEC 61643-1<\/p>\n<\/td>\n<td style=\"height: 65px; width: 133.833px; text-align: center;\">\n<p>Class I Test<\/p>\n<\/td>\n<td style=\"height: 65px; width: 132.75px; text-align: center;\">\n<p>Class II Test<\/p>\n<\/td>\n<td style=\"height: 65px; width: 120.917px; text-align: center;\">\n<p>Class III Test<\/p>\n<\/td>\n<\/tr>\n<tr style=\"background-color: #e0e0ff;\">\n<td style=\"height: 65px; width: 168.267px; background-color: #b0b3ff;\">\n<p>IEC 61643-11\/2011<\/p>\n<\/td>\n<td style=\"height: 65px; width: 133.833px; text-align: center;\">\n<p>Type 1: T1<\/p>\n<\/td>\n<td style=\"height: 65px; width: 132.75px; text-align: center;\">\n<p>Type 2: T2<\/p>\n<\/td>\n<td style=\"height: 65px; width: 120.917px; text-align: center;\">\n<p>Type 3: T3<\/p>\n<\/td>\n<\/tr>\n<tr style=\"background-color: #e0e0ff;\">\n<td style=\"height: 65px; width: 168.267px; background-color: #b0b3ff;\">\n<p>EN\/IEC 61643-11<\/p>\n<\/td>\n<td style=\"height: 65px; width: 133.833px; text-align: center;\">\n<p>Type 1<\/p>\n<\/td>\n<td style=\"height: 65px; width: 132.75px; text-align: center;\">\n<p>Type 2<\/p>\n<\/td>\n<td style=\"height: 65px; width: 120.917px; text-align: center;\">\n<p>Type 3<\/p>\n<\/td>\n<\/tr>\n<tr style=\"background-color: #e0e0ff;\">\n<td style=\"height: 65px; width: 168.267px; background-color: #b0b3ff;\">\n<p>Former VDE 0675v<\/p>\n<\/td>\n<td style=\"height: 65px; width: 133.833px; text-align: center;\">\n<p>B<\/p>\n<\/td>\n<td style=\"height: 65px; width: 132.75px; text-align: center;\">\n<p>C<\/p>\n<\/td>\n<td style=\"height: 65px; width: 120.917px; text-align: center;\">\n<p>D<\/p>\n<\/td>\n<\/tr>\n<tr style=\"background-color: #e0e0ff;\">\n<td style=\"height: 65px; width: 168.267px; background-color: #b0b3ff;\">\n<p>Type of test wave<\/p>\n<\/td>\n<td style=\"height: 65px; width: 133.833px; text-align: center;\">\n<p>10\/350<\/p>\n<\/td>\n<td style=\"height: 65px; width: 132.75px; text-align: center;\">\n<p>8\/20<\/p>\n<\/td>\n<td style=\"height: 65px; width: 120.917px; text-align: center;\">\n<p>1.2\/50 + 8\/20<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span class=\"tab-note\"> <b>Note 1<\/b>: There exist T1 + T2 SPD (or Type 1 + 2 SPD) combining protection of loads against direct and indirect lightning strokes.<\/span><br><span class=\"tab-note\"> <b>Note 2<\/b>: some T2 SPD can also be declared as T3.<\/span><\/p>\n<p><\/p>\n<h3><em><span id=\"Common_characteristics\" class=\"mw-headline\">Common characteristics:<\/span><\/em><\/h3>\n<ul>\n<li><b>U<sub>c<\/sub><\/b>: Maximum continuous operating voltage<\/li>\n<\/ul>\n<dl>\n<dd>This is the A.C. or D.C. voltage above which the SPD becomes active. This value is chosen according to the rated voltage and the system earthing arrangement.<\/dd>\n<\/dl>\n<ul>\n<li><b>U<sub>p<\/sub><\/b>: Voltage protection level (at In)<\/li>\n<\/ul>\n<dl>\n<dd>This is the maximum voltage across the terminals of the SPD when it is active. This voltage is reached when the current flowing in the SPD is equal to In. The voltage protection level chosen must be below the over voltage withstand capability of the loads. In the event of lightning strokes, the voltage across the terminals of the SPD generally remains less than U<sub>p<\/sub>.<\/dd>\n<\/dl>\n<ul>\n<li><b>I<sub>n<\/sub><\/b>: Nominal discharge current<\/li>\n<\/ul>\n<dl>\n<dd>This is the peak value of a current of 8\/20 \u00b5s waveform that the SPD is capable of discharging minimum 19 times.<sup id=\"cite_ref-Ref1_1-0\" class=\"reference\"><\/sup><\/dd>\n<\/dl>\n<p><\/p>\n<p><\/p>\n<p><em><strong>Special check for each Type of SPD:<\/strong><\/em><\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li style=\"text-align: justify;\"><strong>Type 1 SPD: <\/strong><b>I<sub>imp<\/sub><\/b> &#8211; Impulse current<p><\/p>\n<p><\/p>\n<p><\/p>\n<p><\/p>\n<p><\/p>\n<dl>\n<dd>This is the peak value of a current of 10\/350 \u00b5s waveform that the SPD is capable of discharging of discharging at least one time<\/dd>\n<\/dl>\n<\/li>\n<li style=\"text-align: justify;\"><strong>Type 2 SPD: <\/strong><b>I<sub>max<\/sub><\/b> &#8211; Maximum discharge current\n<dl>\n<dd>This is the peak value of a current of 8\/20 \u00b5s waveform that the SPD is capable of discharging once.<\/dd>\n<\/dl>\n<\/li>\n<li style=\"text-align: justify;\"><strong>Type 3 SPD: <\/strong><b>Uoc <\/b>&#8211; Open-circuit voltage applied during class III (Type 3) tests.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n<ul class=\"wp-container-12 wp-block-gallery-11 wp-block-gallery columns-2 is-cropped\"><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" width=\"500\" height=\"444\" src=\"http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/3010_06-2.jpg\" alt=\"\" data-id=\"3154\" data-link=\"http:\/\/aban.vn\/?attachment_id=3154\" class=\"wp-image-3154\" srcset=\"http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/3010_06-2.jpg 500w, http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/3010_06-2-300x266.jpg 300w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" width=\"1024\" height=\"961\" src=\"http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/SPD-in-panel-board-1024x961.jpg\" alt=\"\" data-id=\"3156\" data-link=\"http:\/\/aban.vn\/?attachment_id=3156\" class=\"wp-image-3156\" srcset=\"http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/SPD-in-panel-board-1024x961.jpg 1024w, http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/SPD-in-panel-board-300x282.jpg 300w, http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/SPD-in-panel-board-768x721.jpg 768w, http:\/\/aban.vn\/wp-content\/uploads\/2019\/09\/SPD-in-panel-board.jpg 1201w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption>Installing SPD in panel board<\/figcaption><\/figure><\/li><\/ul>\n\n\n\n<p>Surgefree SPD Class I, II, III following IEC 61643-11 and EN 61643-11 standard on below:<\/p>\n\n\n\n<ul class=\"wp-container-14 wp-block-gallery-13 wp-block-gallery columns-3 is-cropped\"><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" width=\"798\" height=\"798\" src=\"http:\/\/aban.vn\/wp-content\/uploads\/2018\/12\/Class-II-SZK080.gif\" alt=\"\" data-id=\"453\" data-link=\"http:\/\/aban.vn\/class-ii-szk080\/\" class=\"wp-image-453\"\/><figcaption>SPD Class II<\/figcaption><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" width=\"798\" height=\"798\" src=\"http:\/\/aban.vn\/wp-content\/uploads\/2018\/12\/Class-II-SURGEZERO-1.gif\" alt=\"\" data-id=\"459\" data-link=\"http:\/\/aban.vn\/class-ii-surgezero-1\/\" class=\"wp-image-459\"\/><figcaption>SPD Class II<\/figcaption><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" width=\"1024\" height=\"1000\" src=\"http:\/\/aban.vn\/wp-content\/uploads\/2018\/12\/SZ120-380YC-1024x1000.jpg\" alt=\"\" data-id=\"308\" data-link=\"http:\/\/aban.vn\/sz120-380yc\/\" class=\"wp-image-308\" srcset=\"http:\/\/aban.vn\/wp-content\/uploads\/2018\/12\/SZ120-380YC-1024x1000.jpg 1024w, http:\/\/aban.vn\/wp-content\/uploads\/2018\/12\/SZ120-380YC-300x293.jpg 300w, http:\/\/aban.vn\/wp-content\/uploads\/2018\/12\/SZ120-380YC-768x750.jpg 768w, http:\/\/aban.vn\/wp-content\/uploads\/2018\/12\/SZ120-380YC-50x50.jpg 50w, http:\/\/aban.vn\/wp-content\/uploads\/2018\/12\/SZ120-380YC.jpg 1181w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption>SPD Class I &amp; II<\/figcaption><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" width=\"798\" height=\"798\" src=\"http:\/\/aban.vn\/wp-content\/uploads\/2018\/12\/Class-I-SZK12.5.gif\" alt=\"\" data-id=\"448\" data-link=\"http:\/\/aban.vn\/class-i-szk12-5-2\/\" class=\"wp-image-448\"\/><figcaption>SPD Class I<\/figcaption><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" width=\"710\" height=\"518\" src=\"http:\/\/aban.vn\/wp-content\/uploads\/2018\/12\/STCC-06.png\" alt=\"\" data-id=\"302\" data-link=\"http:\/\/aban.vn\/stcc-06\/\" class=\"wp-image-302\" srcset=\"http:\/\/aban.vn\/wp-content\/uploads\/2018\/12\/STCC-06.png 710w, http:\/\/aban.vn\/wp-content\/uploads\/2018\/12\/STCC-06-300x219.png 300w, http:\/\/aban.vn\/wp-content\/uploads\/2018\/12\/STCC-06-370x270.png 370w\" sizes=\"(max-width: 710px) 100vw, 710px\" \/><figcaption>Signal SPD<\/figcaption><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" width=\"588\" height=\"631\" src=\"http:\/\/aban.vn\/wp-content\/uploads\/2018\/12\/SLXsurgetrap-.jpg\" alt=\"\" data-id=\"300\" data-link=\"http:\/\/aban.vn\/slx-24s\/\" class=\"wp-image-300\" srcset=\"http:\/\/aban.vn\/wp-content\/uploads\/2018\/12\/SLXsurgetrap-.jpg 588w, http:\/\/aban.vn\/wp-content\/uploads\/2018\/12\/SLXsurgetrap--280x300.jpg 280w\" sizes=\"(max-width: 588px) 100vw, 588px\" \/><figcaption>SIgnal SPD<\/figcaption><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" width=\"1024\" height=\"682\" src=\"http:\/\/aban.vn\/wp-content\/uploads\/2018\/12\/SHD-RJ45-POE-1024x682.png\" alt=\"\" data-id=\"298\" data-link=\"http:\/\/aban.vn\/shd-rj45-poe\/\" class=\"wp-image-298\" srcset=\"http:\/\/aban.vn\/wp-content\/uploads\/2018\/12\/SHD-RJ45-POE-1024x682.png 1024w, http:\/\/aban.vn\/wp-content\/uploads\/2018\/12\/SHD-RJ45-POE-300x200.png 300w, http:\/\/aban.vn\/wp-content\/uploads\/2018\/12\/SHD-RJ45-POE-768x511.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption>Signal &amp; Data SPD<\/figcaption><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" width=\"798\" height=\"798\" src=\"http:\/\/aban.vn\/wp-content\/uploads\/2018\/12\/Class-II-SACO-E-SC040-380Y.gif\" alt=\"\" data-id=\"504\" data-link=\"http:\/\/aban.vn\/class-ii-saco-e-sc040-380y\/\" class=\"wp-image-504\"\/><figcaption>SPD Class II for MCCB<\/figcaption><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" width=\"798\" height=\"798\" src=\"http:\/\/aban.vn\/wp-content\/uploads\/2018\/12\/ds40t3v.gif\" alt=\"\" data-id=\"625\" data-link=\"http:\/\/aban.vn\/ds40t3v\/\" class=\"wp-image-625\"\/><figcaption>SPD Class II<\/figcaption><\/figure><\/li><\/ul>\n\n\n\n<p>Reference: Wikipedia, electrical-installation<\/p>\n\n\n\n<ul class=\"wp-container-16 wp-block-gallery-15 wp-block-gallery columns-1 is-cropped http:\/\/aban.vn\/\"><li class=\"blocks-gallery-item\"><figure><a href=\"http:\/\/aban.vn\/en\/what-is-bb-kit-connector-and-how-to-install-it-in-electrical-boards\/med-banneraban-01-2\/\"><img loading=\"lazy\" width=\"1024\" height=\"545\" src=\"http:\/\/aban.vn\/wp-content\/uploads\/2019\/08\/med-banneraban-01-1024x545.jpg\" alt=\"\" data-id=\"3059\" data-link=\"http:\/\/aban.vn\/nhung-dieu-can-biet-ve-bo-ket-noi-bb-kit-va-cach-lap-dat-trong-tu-dien\/med-banneraban-01\/\" class=\"wp-image-3059\" srcset=\"http:\/\/aban.vn\/wp-content\/uploads\/2019\/08\/med-banneraban-01-1024x545.jpg 1024w, http:\/\/aban.vn\/wp-content\/uploads\/2019\/08\/med-banneraban-01-300x160.jpg 300w, http:\/\/aban.vn\/wp-content\/uploads\/2019\/08\/med-banneraban-01-768x409.jpg 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure><\/li><\/ul>\n","protected":false},"excerpt":{"rendered":"<p>According to the US Institure of Lightning Safety: \u201cSurge is one of the leading causes of problems for electrical equipments\u201d. Devices will be turned off suddenly, got fire or worse human damage by surge. Each surge event can destruct up to trillions dong.<\/p>\n","protected":false},"author":2,"featured_media":3157,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[319],"tags":[144,235,200,201,236,237,203,238,239,240,241,242,243,147,148,149,150,151,152,156,157,158,159,160,244,165,245,166,167,208,209,210,246,169,247,248,249,250,251,170,171,252,253,172,211,174,175,254,213,177],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v19.8 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>% - ABAN<\/title>\n<meta name=\"description\" content=\"Ch\u00fang t\u00f4i chuy\u00ean cung c\u1ea5p gi\u1ea3i ph\u00e1p ch\u1ed1ng s\u00e9t lan truy\u1ec1n SURGEFREE, gi\u1ea3i ph\u00e1p t\u1ee7 \u0111i\u1ec7n th\u00f4ng minh GDELECS v\u00e0 thi\u1ebft b\u1ecb \u1ea3o h\u00f3a m\u00e1y t\u00ednh Ncomputing. 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