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class="desc">JYM-3G互感器校驗儀電流互感器和變壓器很相像，變壓器接在線路上，主要用來改變線路的電壓，而電流互感器接在線路上，主要用來改變線路的電流，所以電流互感器從前也叫做變流器。后來，一般把直流電變成交流電的儀器設(shè)備叫做變流器，把改變線路上電流大小的電器，根據(jù)它通過互感的工作原理，叫做電流互感器</div> </p></p> </div>  <div id="f55nvtnxj1n" class="x-1"> <div id="f55nvtnxj1n" class="b-1">產(chǎn)品特性<span>Product characteristics</span></div> <link type="text/css" rel="stylesheet" href="/css/property.css"> <script> window.onload=function(){ changeTableHeight(); } window.onresize=function(){ changeTableHeight(); } function changeTableHeight(){ $(".proshowParameter table th").each(function?(i,o){ ????var $this=$(o),? ????height=$this.next().height(); ????$(this).css("height",height); var obj = $(o); var val = obj.text(); if(val == '' || val == null || val == undefined){ $(this).addClass('none'); }else{ $(this).removeClass('none'); } }); $(".proshowParameter table td").each(function?(i,o){ var obj = $(o); var val = obj.text(); if(val == '' || val == null || val == undefined){ $(this).addClass('none'); }else{ $(this).removeClass('none'); } }); } </script> <section class="proshowParameter"> <table style=" margin-bottom:20px;"> <tbody> </tbody> </table> </section><p>JYM-3G互感器校驗儀</p><p>JYM-3G互感器校驗儀</p><p></p><p>電流互感器和變壓器很相像，變壓器接在線路上，主要用來改變線路的電壓，而電流互感器接在線路上，主要用來改變線路的電流，所以電流互感器從前也叫做變流器。后來，一般把直流電變成交流電的儀器設(shè)備叫做變流器，把改變線路上電流大小的電器，根據(jù)它通過互感的工作原理，叫做電流互感器。</p><p><img src="http://www.singtront.com/templets/xingchuang/images/htcp_img25.jpg" style="margin:0px 8px 0px 0px" />產(chǎn)品別稱</p><p><img alt="" src="http://www.singtront.com/uploads/allimg/150429/1-1504291451090-L.jpg" style="height:381px; margin:0px; width:520px" /></p><p>測量用電流互感器的用途，主要有下列兩方面：<br />⑴用來測量高壓線路上的電流和功率，起絕緣隔離的作用，以保證操作人員和儀表的安全。<br />⑵來測量高壓或低壓線路上的大電流和大功率，使用統(tǒng)一的5A的二次線路和測量儀表。<br />因此，對于測量用電流互感器主要有三個要求：*，絕緣必須可靠；第二，必須有一定的測量準(zhǔn)確度；第三，儀表保安系數(shù)Fs較小。<br />電流互感器在測量時，實測的二次電流都是按額定電流比折算為一次電流。這樣的折算實際上是有誤差的。也就是說，電流互感器實際電流比并不等于額定電流比，二者之間具有一定的誤差。因此，測量用電流互感器根據(jù)變電流時所產(chǎn)生的誤差，規(guī)定電流互感器的準(zhǔn)確級。國產(chǎn)電流互感器的準(zhǔn)確級計有：0.01級、0.02級、0.05級、0.1級、0.2級、0.5級、1級、3級和5級等。各級電流互感器的允許誤差都有詳細的規(guī)定。但是在額定電流附近，各級電流互感器的誤差，也可以大致簡單的認(rèn)為，相應(yīng)于0.01級……5級，其允許誤差為0.01%……5%。</p><p>工作范圍：<br />⑴電流：（1%－120%）In （In =5A）<br />（5%－120%）In （In =1A）<br />壓：（5%－120%）Un （Un =100V，150V，100V/<img src="file:///C:/DOCUME~1/ADMINI~1/LOCALS~1/Temp/msohtml1/01/clip_image002.gif" style="height:24px; margin:0px; width:24px" />）（5%－120%）Un （Un =100V/3）<br />工作負(fù)荷：<br />⑴電流：TO對TX＜0.12Ω cosΦ=1<br />⑵電壓：a對x＜0.25VA （100V）<br />極性錯誤指示<br />額定工作電流（電壓）的5%以上，誤差超過180%時，應(yīng)對如極性指示。<br />注意：如果大于額定工作電流（電壓）的10%以上，仍未出現(xiàn)應(yīng)有的極性指示，說明有故障，請不要再增加電流（電壓），以免燒壞儀器。<br />2. 5變比錯誤指示：<br />額定工作電流（電壓）的5%以上，誤差超過30%而小于180%時，應(yīng)有變比錯誤指示。<br />絕緣和耐壓試驗及說明：<br />電源插座對外殼能承受1.5kV,1min耐壓</p> </div> <link rel="stylesheet" type="text/css" href="/css/MessageBoard_style.css"> <script 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