{"id":53798,"date":"2016-03-07T09:45:36","date_gmt":"2016-03-07T07:45:36","guid":{"rendered":"https:\/\/yilkomer.com\/asiri-gerilim-ve-yildirimdan-korunma-sistemlerinde-dogru-bilinen-yanlislar\/"},"modified":"2025-12-20T00:41:23","modified_gmt":"2025-12-19T21:41:23","slug":"common-misconceptions-in-overvoltage-and-lightning-protection-systems","status":"publish","type":"post","link":"https:\/\/yilkomer.com\/en\/common-misconceptions-in-overvoltage-and-lightning-protection-systems\/","title":{"rendered":"Common Misconceptions in Overvoltage and Lightning Protection Systems"},"content":{"rendered":"<p>As the <span style=\"color: #ff6600;\"><strong>Lightning Protection Center<\/strong><\/span>, we have aimed to compile information that is commonly believed to be correct but is actually incorrect regarding <strong><em><a href=\"https:\/\/yilkomer.com\/en\/\" target=\"_blank\" rel=\"noopener noreferrer\">LV Surge Protection (SPD)<\/a><\/em><\/strong> Systems, External Lightning Protection Systems, Earthing, and Equipotential Bonding Systems, which fall within our main fields of expertise.<\/p>\n<p>1- Having a lightning rod or any external lightning protection system does not mean that your electrical systems are protected. In order to provide protection, an <strong>LV Surge Protection<\/strong> system must be used.<\/p>\n<p>2- Using an LV Surge Protection device only in the Main Distribution Board does not protect the entire system. Power, data, and coaxial lines must also be protected.<\/p>\n<p><img decoding=\"async\" class=\"size-full wp-image-12090 aligncenter\" src=\"https:\/\/yilkomer.com\/wp-content\/uploads\/2016\/07\/RayDat-NET-6-POE.jpg\" alt=\"raycap RayDat NET 6 POE\" width=\"209\" height=\"436\" srcset=\"https:\/\/yilkomer.com\/wp-content\/uploads\/2016\/07\/RayDat-NET-6-POE.jpg 209w, https:\/\/yilkomer.com\/wp-content\/uploads\/2016\/07\/RayDat-NET-6-POE-144x300.jpg 144w, https:\/\/yilkomer.com\/wp-content\/uploads\/2016\/07\/RayDat-NET-6-POE-70x146.jpg 70w, https:\/\/yilkomer.com\/wp-content\/uploads\/2016\/07\/RayDat-NET-6-POE-24x50.jpg 24w, https:\/\/yilkomer.com\/wp-content\/uploads\/2016\/07\/RayDat-NET-6-POE-36x75.jpg 36w\" sizes=\"(max-width:767px) 209px, 209px\" \/><\/p>\n<p>3- The down conductor of an external lightning protection system does not have to be made of solid copper. Within the scope of the IEC 62305 Standard, different types of conductors can be used as lightning protection conductors.<\/p>\n<p>4- Earthing a lightning rod at a distance of 20 meters or at a certain distance does not eliminate its impact on the system. The earthing of the external lightning protection system must be included in the equipotential bonding system.<\/p>\n<p>5- When selecting LV Surge Protection Devices, a risk analysis must be performed and the kiloampere (kA) level should be selected accordingly. It is not mandatory to use a 100 kA product in every project just because it is written in some specifications.<\/p>\n<div id=\"attachment_4963\" style=\"width: 563px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/yilkomer.com\/wp-content\/uploads\/2016\/02\/b-c-sinifi.jpg\" rel=\"attachment wp-att-4963\"><img decoding=\"async\" aria-describedby=\"caption-attachment-4963\" class=\" wp-image-4963\" src=\"https:\/\/yilkomer.com\/wp-content\/uploads\/2016\/02\/b-c-sinifi.jpg\" alt=\"LV surge protection systems should be selected based on risk analysis.\" width=\"553\" height=\"334\" \/><\/a><p id=\"caption-attachment-4963\" class=\"wp-caption-text\">LV surge protection systems should be selected based on risk analysis.<\/p><\/div>\n<p>6- Directly fixing the lightning down conductor openly onto the building surface is hazardous. To prevent the risk of flashover to electrical lines, the S separation distance must be calculated or insulated down conductors should be preferred.<\/p>\n<div id=\"attachment_3295\" style=\"width: 603px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/yilkomer.com\/wp-content\/uploads\/2014\/02\/Y\u0131ld\u0131r\u0131m1.jpg\" rel=\"attachment wp-att-3295\"><img decoding=\"async\" aria-describedby=\"caption-attachment-3295\" class=\" wp-image-3295\" src=\"https:\/\/yilkomer.com\/wp-content\/uploads\/2014\/02\/Y\u0131ld\u0131r\u0131m1.jpg\" alt=\"Calculation of lightning and S separation distance\" width=\"593\" height=\"307\" srcset=\"https:\/\/yilkomer.com\/wp-content\/uploads\/2014\/02\/Y\u0131ld\u0131r\u0131m1.jpg 967w, https:\/\/yilkomer.com\/wp-content\/uploads\/2014\/02\/Y\u0131ld\u0131r\u0131m1-300x155.jpg 300w, https:\/\/yilkomer.com\/wp-content\/uploads\/2014\/02\/Y\u0131ld\u0131r\u0131m1-706x366.jpg 706w, https:\/\/yilkomer.com\/wp-content\/uploads\/2014\/02\/Y\u0131ld\u0131r\u0131m1-788x408.jpg 788w, https:\/\/yilkomer.com\/wp-content\/uploads\/2014\/02\/Y\u0131ld\u0131r\u0131m1-697x361.jpg 697w, https:\/\/yilkomer.com\/wp-content\/uploads\/2014\/02\/Y\u0131ld\u0131r\u0131m1-515x267.jpg 515w\" sizes=\"(max-width:767px) 480px, 593px\" \/><\/a><p id=\"caption-attachment-3295\" class=\"wp-caption-text\">Calculation of lightning and S separation distance<\/p><\/div>\n<p>7- Not all LV Surge Protection Devices are varistor-based. In newly developed technologies, varistors and gas discharge tubes are located within the same cartridge, resulting in highly durable products.<\/p>\n<p>8- Using only a <strong>TYPE 3 LV Surge Protection Device<\/strong> does not provide protection against lightning currents. In accordance with IEC standards, coordinated (cascaded) protection must be implemented.<\/p>\n<p>9- In short distances, three-stage protection can be achieved using Type 1 + Type 2 + Type 3 devices. However, in high-rise buildings and long systems, this threefold effect is lost when distances exceed 20 meters, and new products must be used.<\/p>\n<div id=\"attachment_4746\" style=\"width: 557px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/yilkomer.com\/wp-content\/uploads\/2015\/12\/24-v-koruma.jpg\" rel=\"attachment wp-att-4746\"><img decoding=\"async\" aria-describedby=\"caption-attachment-4746\" class=\" wp-image-4746\" src=\"https:\/\/yilkomer.com\/wp-content\/uploads\/2015\/12\/24-v-koruma.jpg\" alt=\"Terminal-type surge protection devices used for protecting sensitive systems\" width=\"547\" height=\"470\" srcset=\"https:\/\/yilkomer.com\/wp-content\/uploads\/2015\/12\/24-v-koruma.jpg 650w, https:\/\/yilkomer.com\/wp-content\/uploads\/2015\/12\/24-v-koruma-300x258.jpg 300w, https:\/\/yilkomer.com\/wp-content\/uploads\/2015\/12\/24-v-koruma-170x146.jpg 170w, https:\/\/yilkomer.com\/wp-content\/uploads\/2015\/12\/24-v-koruma-50x43.jpg 50w, https:\/\/yilkomer.com\/wp-content\/uploads\/2015\/12\/24-v-koruma-87x75.jpg 87w\" sizes=\"(max-width:767px) 480px, 547px\" \/><\/a><p id=\"caption-attachment-4746\" class=\"wp-caption-text\">Terminal-type surge protection devices used for protecting sensitive systems<\/p><\/div>\n<p>10- In our country, there is currently no standard for the <span style=\"color: #ff6600;\"><em><strong><a href=\"https:\/\/yilkomer.com\/en\/active-lightning-rod\/\" target=\"_blank\" rel=\"noopener noreferrer\">active lightning rod<\/a><\/strong><\/em><\/span> system. The IEC 62305 standard is adopted as TSE EN 62305, which foresees system installation using <strong>passive air terminals<\/strong> in accordance with the rolling sphere method.<\/p>\n<p>11- The use of lightning rods in areas such as solar power plants, flammable and explosive facilities, and fuel stations is risky. The most appropriate solution is a design using passive air terminals that do not attract lightning by ion emission.<\/p>\n<p>12- Whether or not an external lightning protection system exists in a facility, an <span style=\"text-decoration: underline;\"><strong><em>LV SURGE PROTECTION<\/em><\/strong><\/span> system must be used.<\/p>\n<p>13- LV Surge Protection Devices do not only protect against lightning strikes; they also provide protection against grid transients, harmonics, sudden voltage drops, and switching surges.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>As the Lightning Protection Center, we have aimed to compile information that is commonly believed to be correct but is actually incorrect regarding LV Surge Protection<span class=\"excerpt-hellip\"> [\u2026]<\/span><\/p>\n","protected":false},"author":1,"featured_media":53799,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_joinchat":[],"footnotes":""},"categories":[193],"tags":[],"class_list":["post-53798","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-general"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v19.2.1 (Yoast SEO v27.7) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Common Misconceptions in Overvoltage<\/title>\n<meta name=\"description\" content=\"In low-voltage surge protection systems, external lightning protection systems, grounding, and equipotential systems, there are concepts that are fundamentally believed to be correct but are actually incorrect\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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