{"id":51322,"date":"2015-09-25T12:31:37","date_gmt":"2015-09-25T09:31:37","guid":{"rendered":"https:\/\/yilkomer.com\/yildirimdan-korunma-sistemi-ayirma-mesafesi-ve-izoleli-yildirim-inis-iletkeni\/"},"modified":"2026-08-24T06:13:09","modified_gmt":"2026-08-24T03:13:09","slug":"separation-distance-in-lightning-protection-systems-and-insulated-lightning-down-conductor","status":"publish","type":"post","link":"https:\/\/yilkomer.com\/en\/separation-distance-in-lightning-protection-systems-and-insulated-lightning-down-conductor\/","title":{"rendered":"Separation Distance in Lightning Protection Systems and Insulated Lightning Down Conductor"},"content":{"rendered":"<div class=\"vgblk-rw-wrapper limit-wrapper\">\n<h2><strong><span style=\"color: #ff6600;\">S Protection Distance<\/span><\/strong><\/h2>\n<p>An S protection distance must always be maintained between the lightning down conductor, the building structure, and electrical cables according to <em><strong>IEC 62305<\/strong><\/em> standards. In addition to the thermal effect of lightning strikes reaching up to 28,000 \u00b0C, the magnetic effect can damage our equipment. Therefore, the S protection distance is required. If this distance cannot be maintained during the down conductor installation, <em><strong><span style=\"color: #ff6600;\"><a style=\"color: #ff6600;\" href=\"https:\/\/yilkomer.com\/en\/insulated-lightning-rod-down-conductor-hvi-iscon\/\" target=\"_blank\" rel=\"noopener\">insulated lightning down conductors<\/a><\/span><\/strong><\/em> should be used.<\/p>\n<h2><strong><span style=\"color: #ff6600;\">How is S Distance Calculated?<\/span><\/strong><\/h2>\n<figure id=\"attachment_4427\" aria-describedby=\"caption-attachment-4427\" style=\"width: 347px\" class=\"wp-caption alignnone\"><img fetchpriority=\"high\" decoding=\"async\" class=\"size-full wp-image-4427\" src=\"https:\/\/yilkomer.com\/wp-content\/uploads\/2015\/09\/s-mesafesi-hesaplama.png\" alt=\"S Distance Formula\" width=\"347\" height=\"180\" srcset=\"https:\/\/yilkomer.com\/wp-content\/uploads\/2015\/09\/s-mesafesi-hesaplama.png 347w, https:\/\/yilkomer.com\/wp-content\/uploads\/2015\/09\/s-mesafesi-hesaplama-300x156.png 300w\" sizes=\"(max-width: 347px) 100vw, 347px\" \/><figcaption id=\"caption-attachment-4427\" class=\"wp-caption-text\"><br \/>S Distance Formula<\/figcaption><\/figure>\n<ul>\n<li>kc: Depends on down conductor design.<\/li>\n<li>ki: Depends on protection class.<\/li>\n<li>km: Depends on system materials.<\/li>\n<li>l: Distance to the nearest potential equalization point.<\/li>\n<\/ul>\n<h3><span style=\"color: #ff6600;\">Protection Class Table<\/span><\/h3>\n<figure id=\"attachment_4428\" aria-describedby=\"caption-attachment-4428\" style=\"width: 602px\" class=\"wp-caption alignnone\"><img decoding=\"async\" class=\"size-full wp-image-4428\" src=\"https:\/\/yilkomer.com\/wp-content\/uploads\/2015\/09\/koruma-s%C4%B1n%C4%B1f-cizelgesi.png\" alt=\"Protection Class Table\" width=\"602\" height=\"178\" \/><figcaption id=\"caption-attachment-4428\" class=\"wp-caption-text\"><br \/>Protection Class Table<\/figcaption><\/figure>\n<figure id=\"attachment_4430\" aria-describedby=\"caption-attachment-4430\" style=\"width: 232px\" class=\"wp-caption alignnone\"><img decoding=\"async\" class=\"wp-image-4430 size-full\" src=\"https:\/\/yilkomer.com\/wp-content\/uploads\/2015\/09\/kc-hesab%C4%B1.png\" alt=\"kc Calculation\" width=\"232\" height=\"112\" \/><figcaption id=\"caption-attachment-4430\" class=\"wp-caption-text\"><br \/>Calculation of kc<\/figcaption><\/figure>\n<ul>\n<li>h: Total number of conductors<\/li>\n<li>c: Distance between down conductors<\/li>\n<li>h: Distance between ring conductors<\/li>\n<\/ul>\n<blockquote><p>If the S Protection Distance cannot be maintained, an Insulated Lightning Down Conductor System must be used.<\/p><\/blockquote>\n<p>For HVI and ISCON insulated lightning down conductors and system design, please contact the <strong><span style=\"color: #ff6600;\"><a style=\"color: #ff6600;\" href=\"https:\/\/yilkomer.com\/en\/\" target=\"_blank\" rel=\"noopener\">Lightning Protection Center<\/a><\/span><\/strong> expert engineers. For fire and magnetic field protection, do not install bare copper conductors without proper calculations. Technical analyses are mandatory according to IEC standards.<\/p>\n<figure id=\"attachment_4435\" aria-describedby=\"caption-attachment-4435\" style=\"width: 533px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-4435\" src=\"https:\/\/yilkomer.com\/wp-content\/uploads\/2015\/09\/s-inis-iletkeni.jpg\" alt=\"S distance calculation\" width=\"533\" height=\"399\" srcset=\"https:\/\/yilkomer.com\/wp-content\/uploads\/2015\/09\/s-inis-iletkeni.jpg 533w, https:\/\/yilkomer.com\/wp-content\/uploads\/2015\/09\/s-inis-iletkeni-300x225.jpg 300w\" sizes=\"(max-width: 533px) 100vw, 533px\" \/><figcaption id=\"caption-attachment-4435\" class=\"wp-caption-text\"><br \/>Calculation of S distance<\/figcaption><\/figure>\n<figure id=\"attachment_4433\" aria-describedby=\"caption-attachment-4433\" style=\"width: 608px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-4433\" src=\"https:\/\/yilkomer.com\/wp-content\/uploads\/2015\/09\/paratoner-inis-iletkeni.png\" alt=\"Insulated Lightning Down Conductor System\" width=\"608\" height=\"355\" srcset=\"https:\/\/yilkomer.com\/wp-content\/uploads\/2015\/09\/paratoner-inis-iletkeni.png 608w, https:\/\/yilkomer.com\/wp-content\/uploads\/2015\/09\/paratoner-inis-iletkeni-300x175.png 300w\" sizes=\"(max-width: 608px) 100vw, 608px\" \/><figcaption id=\"caption-attachment-4433\" class=\"wp-caption-text\"><br \/>Use an Insulated Lightning Down Conductor System if S Distance cannot be maintained<\/figcaption><\/figure>\n<p>&nbsp;<\/p><\/div>\n<p><!-- .vgblk-rw-wrapper --><\/p>\n","protected":false},"excerpt":{"rendered":"<p>S Protection Distance An S protection distance must always be maintained between the lightning down conductor, the building structure, and electrical cables according to IEC 62305 standards. In addition to the thermal effect of lightning strikes reaching up to 28,000 \u00b0C, the magnetic effect can damage our equipment. Therefore, the S protection distance is required&#8230;.<\/p>\n","protected":false},"author":1,"featured_media":994457,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-51322","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-general"],"_links":{"self":[{"href":"https:\/\/yilkomer.com\/en\/wp-json\/wp\/v2\/posts\/51322","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/yilkomer.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/yilkomer.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/yilkomer.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/yilkomer.com\/en\/wp-json\/wp\/v2\/comments?post=51322"}],"version-history":[{"count":1,"href":"https:\/\/yilkomer.com\/en\/wp-json\/wp\/v2\/posts\/51322\/revisions"}],"predecessor-version":[{"id":994212,"href":"https:\/\/yilkomer.com\/en\/wp-json\/wp\/v2\/posts\/51322\/revisions\/994212"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/yilkomer.com\/en\/wp-json\/wp\/v2\/media\/994457"}],"wp:attachment":[{"href":"https:\/\/yilkomer.com\/en\/wp-json\/wp\/v2\/media?parent=51322"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/yilkomer.com\/en\/wp-json\/wp\/v2\/categories?post=51322"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/yilkomer.com\/en\/wp-json\/wp\/v2\/tags?post=51322"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}