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id="6aplaizydtj" class="info_con_tit"> <div id="6aplaizydtj" class="n_tit"> <span>文章出處??a href=""><a >深圳市晨飛電子有限公??/a></a></span><span>網(wǎng)責(zé)任編輯：<a >NSW</a></span><span>作者：<a >NSW</a></span><span>人氣??span id="cntrHits">-</span></span><span>發(fā)表時(shí)間??014-06-07 10:52:00</span> <div id="6aplaizydtj" class="newchang">  <div class="6aplaizydtj" id="ckepop"> <a class="jiathis jiathis_txt jtico jtico_jiathis" target="_blank">分享到：</a> <a class="jiathis_button_qzone">QQ空間</a> <a class="jiathis_button_tsina"> 新浪微博</a> <a class="jiathis_button_tqq">騰訊微博</a> <a class="jiathis_button_tsohu">搜狐微博</a> <a class="jiathis_button_t163">網(wǎng)易微博</a> <a class="jiathis_button_tools_1"></a><a class="jiathis_button_tools_2"></a> </div> <script type="text/javascript"> var jiathis_config = { "data_track_clickback": true };</script> <script type="text/javascript" src="http://v2.jiathis.com/code/jia.js?uid=899792" charset="utf-8"></script>  </div> </div> </div> </div> <div class="6aplaizydtj" id="cntrBody"> <p> <span style="font-size: 16px">怎樣才能稱之為開(kāi)關(guān)電源變壓器的壽??絕緣溫度指的又是什??</span></p> <p> </p> <p><span style="font-size: 16px">　　</span><strong><a href="http://www.linhang.com.cn/product/"><span style="font-size: 16px">開(kāi)關(guān)電源變壓器</span></a></strong><span style="font-size: 16px">在額定電壓和額定負(fù)載下正常運(yùn)行的時(shí)間，稱為變壓器的使用壽命。制造變壓器的材料主要包括金屬材料和絕緣材料兩大類。若變壓器的運(yùn)行溫度長(zhǎng)時(shí)間超過(guò)允許值，則變壓器的絕緣材料容易損壞。因?yàn)榻^緣材料長(zhǎng)期受熱老化，溫度越高絕緣材料老化越快。當(dāng)絕緣材料老化到一定程度時(shí)，在運(yùn)行震動(dòng)和電動(dòng)力的作用下，造成絕緣材料破裂，易發(fā)生電氣擊穿的故障，導(dǎo)致變壓器使用壽命減少，所以溫度是影響變壓器使用壽命的主要因素之一。變壓器的壽命在一定意義上可以說(shuō)就是絕緣材料的壽命??/span></p> <p> </p> <p><span style="font-size: 16px">　　1. 正確調(diào)整變壓器負(fù)荷，使變壓器達(dá)到理想的使用年限：</span></p> <p> </p> <p><span style="font-size: 16px">　　變壓器內(nèi)部的絕緣溫度在電壓基本一定的前提下，主要與負(fù)荷電流大小有關(guān)，即負(fù)荷電流大，絕緣溫度則高，反之負(fù)荷電流小絕緣溫度低??/span></p> <p> </p> <p><span style="font-size: 16px">　　變壓器在運(yùn)行中過(guò)負(fù)荷或夏季帶額定負(fù)荷運(yùn)行時(shí)，內(nèi)部絕緣處在高溫下運(yùn)行，變壓器的壽命損失將加快。若變壓器處于輕負(fù)荷或冬季帶額定負(fù)荷運(yùn)行時(shí)，其內(nèi)部絕緣在低溫下運(yùn)行，變壓器壽命損失則可減緩。因此為了使變壓器負(fù)荷能力在全年得到充分利用又不影響變壓器正常使用壽命，每個(gè)月負(fù)荷可適當(dāng)調(diào)整??/span></p> <p> </p> <p><span style="font-size: 16px">　　2. 變壓器使用壽命與絕緣溫度的關(guān)系：</span></p> <p> </p> <p><span style="font-size: 16px">　　我國(guó)電力變壓器，大部分采用油紙絕緣即A級(jí)絕緣。對(duì)于A級(jí)絕緣的變壓器，在正常運(yùn)行中，當(dāng)周圍空氣溫度??0℃時(shí)，變壓器繞組的極限工作溫度為105℃??/span></p> <p><span style="font-size: 16px">　　實(shí)踐和研究表明，如果繞組能連續(xù)維??5℃溫度，可以保證變壓器具??0年的使用壽命。根據(jù)溫度與壽命的關(guān)系，還可引出一個(gè)所??℃定則：以上述溫度下的壽命為基礎(chǔ)，繞組溫度每升高8℃，變壓器使用壽命就縮短1/2??/span></p> <p> </p> <p><span style="font-size: 16px">　　據(jù)有關(guān)資料和實(shí)踐證明??/span></p> <p> </p> <p><span style="font-size: 16px">　　變壓器絕緣工作溫度在95℃時(shí)，變壓器使用壽命??0年??/span></p> <p> </p> <p><span style="font-size: 16px">　　變壓器絕緣工作溫度在105℃，變壓器使用壽命為7年??/span></p> <p> </p> <p><span style="font-size: 16px">　　變壓器絕緣工作溫度在120℃時(shí)，變壓器使用壽命??年??/span></p> </div> <div id="6aplaizydtj" class="apage" id="showfenye">  <script type="text/javascript"> var pagecont=1; if(pagecont > 2) { var ss = new Cls_jsPage(1, 1, 5, "ss"); ss.setPageSE("kaiguandianyuanbianyjywd_1_", ".html"); ss.setPageInput("Page"); ss.setUrl(""); ss.setPageFrist("<a disabled='true'class='ob'>首頁(yè)</a>", "首頁(yè)"); ss.setPagePrev("<a disabled='true'class='ob'>上一??/a>", "上一??); ss.setPageNext("<a disabled='true'class='ob'>下一??/a>", "下一??); ss.setPageLast("<a disabled='true'class='ob'>尾頁(yè)</a>", "尾頁(yè)"); ss.setPageText("{$PageNum}", "{$PageNum}"); ss.setPageTextF("{$PageTextF}", "{$PageTextF}"); ss.setPageSelect("{$PageNum}", "{$PageNum}"); ss.setPageCss("o", "", ""); ss.setHtml("<div id="6aplaizydtj" class='o'>{$PageFrist}{$PagePrev}{$PageText}{$PageNext}{$PageLast}</div>"); ss.Write(); } else { document.getElementById("showfenye").style.display="none"; } </script>  </div> <div id="6aplaizydtj" class="gduo"> 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