{"id":3388,"date":"2022-03-30T12:06:26","date_gmt":"2022-03-30T10:06:26","guid":{"rendered":"https:\/\/mi.addevmaterials.com\/?p=3388"},"modified":"2025-07-24T13:19:05","modified_gmt":"2025-07-24T13:19:05","slug":"what-is-an-electrical-insulator-and-in-what-forms-can-it-be-found-2","status":"publish","type":"post","link":"https:\/\/addevmaterials.com\/converting\/what-is-an-electrical-insulator-and-in-what-forms-can-it-be-found-2\/","title":{"rendered":"All about the deterioration of dielectric properties"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"3388\" class=\"elementor elementor-3388\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-10c85a86 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"10c85a86\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t\t<div class=\"elementor-background-overlay\"><\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-55154029\" data-id=\"55154029\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-3ada67e0 elementor-widget elementor-widget-heading\" data-id=\"3ada67e0\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">All about the deterioration of dielectric properties<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5ee4cf69 elementor-widget elementor-widget-shortcode\" data-id=\"5ee4cf69\" data-element_type=\"widget\" data-widget_type=\"shortcode.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-shortcode\"><span><span><a href=\"https:\/\/addevmaterials.com\/converting\/\">Accueil<\/a><\/span><\/span>\n<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-4cb95d4 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"4cb95d4\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-61f2ad0\" data-id=\"61f2ad0\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-bc6fc66 elementor-widget elementor-widget-text-editor\" data-id=\"bc6fc66\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><em>No insulating material has an unlimited lifespan and the dielectric properties can degrade over time.\u00a0Although the deterioration factors for these insulators may vary, the consequences are always the same: failure of the equipment to be protected.\u00a0It is therefore essential to always choose the material adapted to the specifications.<\/em><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-15621a7 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"15621a7\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-8edc832\" data-id=\"8edc832\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-58861f5 elementor-widget elementor-widget-heading\" data-id=\"58861f5\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">What are the deterioration factors of electrical insulators?\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9a65e3b elementor-widget elementor-widget-text-editor\" data-id=\"9a65e3b\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span>Two factors mainly come into play in the deterioration of the dielectric properties of insulators:<\/span><\/p><ol><li><span>temperature\u00a0<\/span><strong><span>:<\/span><\/strong><span>\u00a0It is known that\u00a0<\/span><strong><span>temperature is an aggravating factor<\/span><span>\u00a0,<\/span><\/strong><span>\u00a0because the higher it is, the more malleable the material becomes, which accelerates its degradation under the effect of electricity.<\/span><\/li><li><strong><span>and electrical stress<\/span><\/strong><span>\u00a0caused by partial discharges linked to voltage peaks.<\/span><\/li><\/ol><p><span>Indeed, throughout its life, the electrical insulator is brought to fight against the current.\u00a0This permanent fight weakens it, because the electric current gradually erodes the surface of this insulator.\u00a0After a certain time, an electric arc appears and therefore\u00a0<\/span><strong><span>the insulation function breaks<\/span><\/strong><span>\u00a0.<\/span><\/p><p><span>Furthermore, the more violent the attack of the current, and therefore the higher the voltage, the faster this degradation.<\/span><\/p><p><span>Apart from these factors whose impact is systematic, there are many other deterioration parameters to take into account.\u00a0These are linked to the environment in which the insulation evolves and can be linked to various physico-chemical processes:<\/span><\/p><ul><li><span>effect of UV radiation;<\/span><\/li><li><span>mechanical constraints;<\/span><\/li><li><span>radioactive environment;<\/span><\/li><li><span>corrosive atmosphere;<\/span><\/li><li><span>oxidation;<\/span><\/li><li><span>presence of solvents, etc.<\/span><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-9bd63c8 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"9bd63c8\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-867d75d\" data-id=\"867d75d\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-1962fe0 elementor-widget elementor-widget-heading\" data-id=\"1962fe0\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Deterioration of dielectric properties and its consequences\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ae0e566 elementor-widget elementor-widget-text-editor\" data-id=\"ae0e566\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span>Concretely, the degradation of a material leads to a deterioration of the insulating properties, ie to a reduction in the dielectric strength.<\/span><\/p><p><span>The material will therefore become less resistant to the effects of the electric field and there is then a risk of breaking the dielectric function.<\/span><\/p><p><span>The consequences of a break in the dielectric function of the material are unfortunately often irremediable. In fact, when this occurs following a partial discharge,\u00a0<\/span><strong><span>the insulation is destroyed<\/span><\/strong><span>\u00a0and the electrical equipment it must protect immediately ceases to operate.\u00a0To illustrate, we can therefore say that\u00a0<\/span><strong><span>the electrical insulator behaves like \u201cthe fuse of the insulating function\u201d.<\/span><\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-6ea5616 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"6ea5616\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-28ba890\" data-id=\"28ba890\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-135f6ea elementor-widget elementor-widget-heading\" data-id=\"135f6ea\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">How to avoid deterioration of dielectric properties?\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d9e04fc elementor-widget elementor-widget-text-editor\" data-id=\"d9e04fc\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Anticipating this deterioration is not always easy, because the degradation of the insulation itself is not visible before it breaks.\u00a0This is why it is important to choose quality materials that are adapted to the actual conditions of use.\u00a0Here are 2 essential criteria to take into account:<\/p><h3><u>1. Check that the type of insulation corresponds to the specifications<\/u><\/h3><p>It is essential to\u00a0<strong>know precisely the functional constraints of the equipment<\/strong>\u00a0to be protected, whether it is a rotating machine or a transformer, so as to choose the insulating material which will best correspond to the specifications.<\/p><p>The choice of insulation is thus guided by its dielectric performance but also by its\u00a0<a href=\"https:\/\/mi.addevmaterials.com\/2022\/06\/08\/what-are-the-different-types-of-electrical-insulation-2\/\" rel=\" noopener\">thermal class<\/a>\u00a0, which is why European standards such as IEC and UL certifications play an important role.<\/p><h3><u>2. Choose quality materials<\/u><\/h3><p>Concerning the service life of the insulator, it is known that\u00a0<strong>the dielectric strength varies according to the ranges<\/strong>\u00a0of insulating materials chosen.\u00a0The deterioration of a poor quality insulating material may thus occur prematurely due to defects, such as cavities present in the material.<\/p><p>Thus,\u00a0choosing materials from recognized manufacturers is always advisable\u00a0, because manufacturers engage in a certification process which often guarantees better resistance to the degradation of dielectric properties.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-f0077c2 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"f0077c2\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-df807e6\" data-id=\"df807e6\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-82d1975 elementor-widget elementor-widget-heading\" data-id=\"82d1975\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Conclusion<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-12592e9 elementor-widget elementor-widget-text-editor\" data-id=\"12592e9\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span>During its life, an insulating material is subjected to intense electrical and thermal stress which weakens it and degrades its dielectric properties.\u00a0If the deterioration of an insulator is unavoidable, it can be limited by\u00a0<\/span><span>choosing quality materials and adapted to the real operating conditions<\/span><span>\u00a0.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-490afeac elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"490afeac\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-2da26072\" data-id=\"2da26072\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-3f0e1922 elementor-widget elementor-widget-heading\" data-id=\"3f0e1922\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">A specific need?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7940d0d3 elementor-widget elementor-widget-text-editor\" data-id=\"7940d0d3\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Our teams will answer you as soon as possible<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-55071826 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"55071826\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-117f7dff\" data-id=\"117f7dff\" data-element_type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>All about the deterioration of dielectric properties No insulating material has an unlimited lifespan and the dielectric properties can degrade over time.\u00a0Although the deterioration factors for these insulators may vary, the consequences are always the same: failure of the equipment to be protected.\u00a0It is therefore essential to always choose the material adapted to the specifications. [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3400,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22],"tags":[],"class_list":["post-3388","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-marche"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>All about the deterioration of dielectric properties - ADDEV Materials Converting<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/addevmaterials.com\/converting\/what-is-an-electrical-insulator-and-in-what-forms-can-it-be-found-2\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"All about the deterioration of dielectric properties - ADDEV Materials Converting\" \/>\n<meta property=\"og:description\" content=\"All about the deterioration of dielectric properties No insulating material has an unlimited lifespan and the dielectric properties can degrade over time.\u00a0Although the deterioration factors for these insulators may vary, the consequences are always the same: failure of the equipment to be protected.\u00a0It is therefore essential to always choose the material adapted to the specifications. 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