{"id":53978,"date":"2016-04-26T06:51:41","date_gmt":"2016-04-26T03:51:41","guid":{"rendered":"https:\/\/yilkomer.com\/asiri-gerilim-sebepleri-nelerdir\/"},"modified":"2026-08-22T18:13:11","modified_gmt":"2026-08-22T15:13:11","slug":"what-are-the-causes-of-overvoltage","status":"publish","type":"post","link":"https:\/\/yilkomer.com\/en\/what-are-the-causes-of-overvoltage\/","title":{"rendered":"What Are the Causes of Overvoltage?"},"content":{"rendered":"<div class=\"vgblk-rw-wrapper limit-wrapper\"><span style=\"color: #ff6600;\"><a style=\"color: #ff6600;\" href=\"https:\/\/yilkomer.com\/en\/surge-protection\/\"><strong>Overvoltage<\/strong><\/a><\/span> is an electrical event that can occur for various reasons, many of which can be destructive for facilities. With the increase of electronic components today, understanding the causes of overvoltage and providing solutions has become even more important. Perhaps the most well-known overvoltage impulse is the lightning strike. This impulse, with a 10\/350 waveform, is the most destructive for facilities. Internal overvoltages, on the other hand, with a <strong>8\/20 waveform<\/strong>, are often neglected impulses that cause most of the damage.<\/p>\n<h2><span style=\"color: #ff6600;\"><strong>Why Does Overvoltage Occur?<\/strong><\/span><\/h2>\n<p><strong>1-Voltage Sag<\/strong><\/p>\n<p>Temporary reductions in AC voltage are called sags. Temporary sags last between 0.5 and 2 seconds and usually occur due to short circuits. Longer-lasting sags are permanent sags.<\/p>\n<p><a href=\"https:\/\/yilkomer.com\/wp-content\/uploads\/2016\/04\/elektrik-%C3%A7%C3%B6k%C3%BCnt%C3%BCs%C3%BC.jpg\"><img fetchpriority=\"high\" decoding=\"async\" class=\"size-full wp-image-5308 aligncenter\" src=\"https:\/\/yilkomer.com\/wp-content\/uploads\/2016\/04\/elektrik-%C3%A7%C3%B6k%C3%BCnt%C3%BCs%C3%BC.jpg\" alt=\"voltage-sag\" width=\"445\" height=\"459\" \/><\/a><\/p>\n<p><strong>2-Voltage Swell<\/strong><\/p>\n<p>Voltage swell, the opposite of sag, can be another cause of sudden overvoltage. Temporary voltage swells last between 0.5 and 2 seconds and usually occur due to short circuits. Longer-lasting swells are permanent and dangerous.<\/p>\n<p><a href=\"https:\/\/yilkomer.com\/wp-content\/uploads\/2016\/04\/gerilim-y%C3%BCkselmesi.jpg\"><img decoding=\"async\" class=\"wp-image-5310 size-full aligncenter\" src=\"https:\/\/yilkomer.com\/wp-content\/uploads\/2016\/04\/gerilim-y%C3%BCkselmesi.jpg\" alt=\"voltage-swell\" width=\"307\" height=\"327\" \/><\/a><\/p>\n<p><strong>3-Impulses<\/strong><\/p>\n<p>Impulses usually have high destructive power and can damage systems if proper protection is not provided. While lightning is the best-known electrical impulse, large motors, transformer switching, <strong>inductive<\/strong> and capacitive effects are other important impulse causes.<\/p>\n<figure id=\"attachment_5311\" aria-describedby=\"caption-attachment-5311\" style=\"width: 293px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/yilkomer.com\/wp-content\/uploads\/2016\/04\/darbe.gif\"><img decoding=\"async\" class=\"wp-image-5311 size-full\" src=\"https:\/\/yilkomer.com\/wp-content\/uploads\/2016\/04\/darbe.gif\" alt=\"impulse\" width=\"293\" height=\"264\" \/><\/a><figcaption id=\"caption-attachment-5311\" class=\"wp-caption-text\">Sudden voltage increase and resulting impulse<\/figcaption><\/figure>\n<figure id=\"attachment_5312\" aria-describedby=\"caption-attachment-5312\" style=\"width: 262px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/yilkomer.com\/wp-content\/uploads\/2016\/04\/y%C4%B1ld%C4%B1r%C4%B1m-darbesi.gif\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-5312 size-full\" src=\"https:\/\/yilkomer.com\/wp-content\/uploads\/2016\/04\/y%C4%B1ld%C4%B1r%C4%B1m-darbesi.gif\" alt=\"lightning-impulse\" width=\"262\" height=\"281\" \/><\/a><figcaption id=\"caption-attachment-5312\" class=\"wp-caption-text\">Impulse peak caused by a lightning strike<\/figcaption><\/figure>\n<p>Other sudden overvoltage causes include:<\/p>\n<ul>\n<li><strong><a href=\"https:\/\/yilkomer.com\/en\/harmonic-measurement-and-report\/\">Harmonics<\/a><\/strong><\/li>\n<li><strong>Switching<\/strong> operations (8\/20 waveform)<\/li>\n<li>Inductive or capacitive coupling<\/li>\n<\/ul>\n<figure id=\"attachment_5314\" aria-describedby=\"caption-attachment-5314\" style=\"width: 408px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/yilkomer.com\/wp-content\/uploads\/2016\/04\/y%C4%B1ld%C4%B1r%C4%B1m-darbesi-yanma.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-5314 size-full\" src=\"https:\/\/yilkomer.com\/wp-content\/uploads\/2016\/04\/y%C4%B1ld%C4%B1r%C4%B1m-darbesi-yanma.jpg\" alt=\"factory-fire-from-lightning\" width=\"408\" height=\"309\" \/><\/a><figcaption id=\"caption-attachment-5314\" class=\"wp-caption-text\">A factory burned due to a lightning impulse<\/figcaption><\/figure>\n<p>&nbsp;<\/p><\/div>\n<p><!-- .vgblk-rw-wrapper --><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overvoltage is an electrical event that can occur for various reasons, many of which can be destructive for facilities. With the increase of electronic components today, understanding the causes of overvoltage and providing solutions has become even more important. Perhaps the most well-known overvoltage impulse is the lightning strike. This impulse, with a 10\/350 waveform,&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-53978","post","type-post","status-publish","format-standard","hentry","category-general"],"_links":{"self":[{"href":"https:\/\/yilkomer.com\/en\/wp-json\/wp\/v2\/posts\/53978","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=53978"}],"version-history":[{"count":1,"href":"https:\/\/yilkomer.com\/en\/wp-json\/wp\/v2\/posts\/53978\/revisions"}],"predecessor-version":[{"id":994149,"href":"https:\/\/yilkomer.com\/en\/wp-json\/wp\/v2\/posts\/53978\/revisions\/994149"}],"wp:attachment":[{"href":"https:\/\/yilkomer.com\/en\/wp-json\/wp\/v2\/media?parent=53978"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/yilkomer.com\/en\/wp-json\/wp\/v2\/categories?post=53978"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/yilkomer.com\/en\/wp-json\/wp\/v2\/tags?post=53978"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}