{"version":"1.0","provider_name":"Walcher GmbH &amp; Co. KG","provider_url":"https:\/\/www.walcher.com\/en\/","author_name":"Wlad Leirich","author_url":"https:\/\/www.walcher.com\/en\/author\/wlad-leirich\/","title":"WA-DR8\/G speed relay &#8211; Walcher GmbH &amp; Co. KG","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"8Tlp0TZL8i\"><a href=\"https:\/\/www.walcher.com\/en\/p\/wa-dr8-g-speed-relay\/\">WA-DR8\/G speed relay<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.walcher.com\/en\/p\/wa-dr8-g-speed-relay\/embed\/#?secret=8Tlp0TZL8i\" width=\"600\" height=\"338\" title=\"&#8220;WA-DR8\/G speed relay&#8221; &#8212; Walcher GmbH &amp; Co. KG\" data-secret=\"8Tlp0TZL8i\" 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.walcher.com\/wp-includes\/js\/wp-embed.min.js\n<\/script>\n","thumbnail_url":"https:\/\/www.walcher.com\/wp-content\/uploads\/2022\/10\/image_manager__12col_wa-dr8g-1-3.jpeg","thumbnail_width":1200,"thumbnail_height":798,"description":"Speed measurement without sensors using remanent voltage The WA-DR8\/G speed relay measures the speed of generators and motors. The principle is based on a frequency measurement of the generator\u2019s voltage. The remanent voltage of an asynchronous generator is sufficient, as amplitudes are measured from just 0.7 V. No sensors are required, due to the measurement\u2026"}