1.0Electrical Riddlehttps://electrical-riddle.com/faElectrical Riddlehttps://electrical-riddle.com/faProtection Riddle No.63 - Over Design Restricted Earth Fault Protection - Electrical Riddlerich600338<blockquote class="wp-embedded-content" data-secret="YVOJgxUvpf"><a href="https://electrical-riddle.com/fa/forums/topic/444/">Protection Riddle No.63 – Over Design Restricted Earth Fault Protection</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://electrical-riddle.com/fa/forums/topic/444/embed/#?secret=YVOJgxUvpf" width="600" height="338" title="“Protection Riddle No.63 – Over Design Restricted Earth Fault Protection” — Electrical Riddle" data-secret="YVOJgxUvpf" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script>
/*! This file is auto-generated */
!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);
//# sourceURL=https://electrical-riddle.com/wp-includes/js/wp-embed.min.js
</script>In an executed REF protection, the neutral CT No.1 after many years of system operation is fronted to burning due to unknown accident (see below figure). In an executed REF protection, the neutral CT No.1 after many years of system operation is fronted to burning due to unknown accident (see below figure). Operator group decide … ادامه »https://electrical-riddle.com/wp-content/uploads/2021/08/697214245_298.gif