{"version":"1.0","provider_name":"LS power Transformator, die Linie Reaktor, Hohe-Spannung Transformator, \u00d6l-eingetaucht Transformator-CHANGSHA LUSHAN ELECTRONIC TECHNOLOGY CO.,LTD","provider_url":"https:\/\/www.lstransformer.com\/de","author_name":"369703005","author_url":"https:\/\/www.lstransformer.com\/de\/author\/369703005\/","title":"What\u2019s the Purpose and Significance of Partial Discharge Testing - LS power transformer, Line reactor, High-voltage transformer, Oil-immersed transformer-CHANGSHA LUSHAN ELECTRONIC TECHNOLOGY CO.,LTD","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"2CBftVkKjW\"><a href=\"https:\/\/www.lstransformer.com\/de\/whats-thepurpose-and-significance-of-partial-discharge-testing\/\">What\u2019s the Purpose and Significance of Partial Discharge Testing<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.lstransformer.com\/de\/whats-thepurpose-and-significance-of-partial-discharge-testing\/embed\/#?secret=2CBftVkKjW\" width=\"600\" height=\"338\" title=\"&#8222;What\u2019s the Purpose and Significance of Partial Discharge Testing&#8220; &#8211; LS power transformer, Line reactor, High-voltage transformer, Oil-immersed transformer-CHANGSHA LUSHAN ELECTRONIC TECHNOLOGY CO.,LTD\" data-secret=\"2CBftVkKjW\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script>\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/\/# sourceURL=https:\/\/www.lstransformer.com\/wp-includes\/js\/wp-embed.min.js\n<\/script>","thumbnail_url":"https:\/\/www.lstransformer.com\/wp-content\/uploads\/2026\/07\/1742021235912180.png","thumbnail_width":370,"thumbnail_height":276,"description":"Partial discharge refers to the phenomenon of discharge that occurs between electrodes but does not penetrate them. It is caused by weaknesses in the insulation of electrical equipment or defects in the manufacturing process, leading to repeated breakdowns and extinguishing under high electric field intensity. This discharge manifests as breakdown of insulation gas, local breakdown of solid or liquid media within a small range, and local breakdown discharge caused by the concentration of electric field strength at the edges and corners of metal surfaces. Although the energy of this discharge is small, its short-term existence does not affect the insulation strength of electrical equipment. However, if partial discharge occurs continuously under the operating voltage of electrical equipment, these weak discharges will accumulate, gradually deteriorating the dielectric performance of insulation and enlarging local defects, ultimately leading to insulation breakdown."}