廣元電線電纜報(bào)價(jià) 創(chuàng)造輝煌成都皖川科技供應(yīng)-b2b網(wǎng)站_b2b電子商務(wù)平臺(tái)【買產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="超負(fù)荷運(yùn)行，由于電流的熱效應(yīng)，負(fù)載電流通過(guò)電纜時(shí)必然導(dǎo)致導(dǎo)體發(fā)熱，同時(shí)電荷的集膚效應(yīng)以及鋼鎧的渦流損耗，廣元電線電纜報(bào)價(jià)、絕緣介質(zhì)損耗也會(huì)產(chǎn)乍附加熱量，從而使電纜溫度升高。長(zhǎng)期超負(fù)荷運(yùn)行時(shí)，過(guò)高的溫度會(huì)加速絕緣的老化，以至絕緣被擊穿。尤其在"><meta name="keywords" content="廣元電線電纜報(bào)價(jià),電線電纜"><link rel="canonical" href="http://www.cdcfah.com/"/><meta name="applicable-device" content="pc"><link rel="shortcut icon" href="/static/new_net_01/images/favicon.ico"><link rel="stylesheet" href="/static/new_net_01/css/slick.css" /><link rel="stylesheet" href="/static/new_net_01/css/addnew.css"><link rel="stylesheet" href="/static/new_net_01/css/sidenav.css"><link rel="stylesheet" href="/static/new_net_01/css/style.css" /><link rel="stylesheet" href="/static/new_net_01/css/tab.css"><link rel="stylesheet" href="/static/new_net_01/css/404.css"> <meta 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class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)格要求：</span>面議</p><p><span>所在地：</span>四川省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>廣元電線電纜報(bào)價(jià),電線電纜</p><p><span>***更新：</span>2020-11-04 09:09:44</p><p><span id="click" >瀏覽次數(shù)：1次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="rgd2ew2" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">成都皖川科技有限公司</a></p><p><span>聯(lián)系人：</span>朱成生</p><p><span>郵箱: </span>cdwckjgs@sina.com</p><p><span>電話: </span>18755046999</p><p><span>傳真: </span>028_87463776</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>028-87463776</p><p><span>地址: </span>四川省成都市青羊區(qū)青羊萬(wàn)達(dá)廣場(chǎng)SOHO公寓2-2-1138室</p><p>[當(dāng)前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="eyazqhg" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="3nuroas" class="box"><p><p style="text-indent:25px">超負(fù)荷運(yùn)行，由于電流的熱效應(yīng)，負(fù)載電流通過(guò)電纜時(shí)必然導(dǎo)致導(dǎo)體發(fā)熱，同時(shí)電荷的集膚效應(yīng)以及鋼鎧的渦流損耗，廣元電線電纜報(bào)價(jià)、絕緣介質(zhì)損耗也會(huì)產(chǎn)乍附加熱量，從而使電纜溫度升高。長(zhǎng)期超負(fù)荷運(yùn)行時(shí)，過(guò)高的溫度會(huì)加速絕緣的老化，以至絕緣被擊穿。尤其在炎熱的夏季，電纜的溫升常常導(dǎo)致電纜絕緣薄弱處首先被擊穿，因此在夏季，電纜的故障也就特別多。電纜接頭是電纜線路中蕞薄弱的環(huán)節(jié)，廣元電線電纜報(bào)價(jià)，廣元電線電纜報(bào)價(jià)，由人員直接過(guò)失(施工不良)引發(fā)的電纜接頭故障時(shí)常發(fā)生。施工人員在制作電纜接頭過(guò)程中，如果有接頭壓接不緊、加熱不充分等原網(wǎng)，都會(huì)導(dǎo)致電纜頭絕緣降低，從而引發(fā)事故。廣元電線電纜報(bào)價(jià)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣元電線電纜報(bào)價(jià),電線電纜" src="http://tyunfile.71360.com/UploadFile/cdwckj/637064055704843750/398763.jpg"></div><p style="text-indent:25px">例如鋁芯絕緣線，環(huán)境溫度為不大于25℃時(shí)的載流量的計(jì)算：當(dāng)截面為6平方毫米時(shí)，算得載流量為30安；當(dāng)截面為150平方毫米時(shí)，算得載流量為300安；當(dāng)截面為70平方毫米時(shí)，算得載流量為175安；從上面的排列還可以看出：倍數(shù)隨截面的增大而減小，在倍數(shù)轉(zhuǎn)變的交界處，誤差稍大些。比如截面25與35是四倍與三倍的分界處，25屬四倍的范圍，它按口訣算為100安，但按手冊(cè)為97安；而35則相反，按口訣算為105安，但查表為117安。不過(guò)這對(duì)使用的影響并不大。當(dāng)然，若能“胸中有數(shù)”，在選擇導(dǎo)線截面時(shí)，25的不讓它滿到100安，35的則可略為超過(guò)105安便更準(zhǔn)確了。同樣，2.5平方毫米的導(dǎo)線位置在五倍的始端，實(shí)際便不止五倍（比較大可達(dá)到20安以上），不過(guò)為了減少導(dǎo)線內(nèi)的電能損耗，通常電流都不用到這么大，手冊(cè)中一般只標(biāo)12安。廣元電線電纜報(bào)價(jià)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣元電線電纜報(bào)價(jià),電線電纜" src="http://tyunfile.71360.com/UploadFile/cdwckj/637064055704824219/8908406.jpg"></div><p style="text-indent:25px">1、每臺(tái)計(jì)算機(jī)耗電約為200～300W(約1～1.5A)，那么10臺(tái)計(jì)算機(jī)就需要一條2.5平方毫米的銅芯電線供電，否則可能發(fā)生火災(zāi)。 2、大3匹空調(diào)耗電約為3000W(約14A)，那么1臺(tái)空調(diào)就需要單獨(dú)的一條2.5平方毫米的銅芯電線供電。 3、現(xiàn)在的住房進(jìn)線一般是4平方毫米的銅線，因此，同時(shí)開(kāi)啟的家用電器不得超過(guò)25A(即5500瓦)，有人將房屋內(nèi)的電線更換成6平方毫米的銅線是沒(méi)有用處的，因?yàn)檫M(jìn)入電表的電線是4平方毫米的。 4、早期的住房(15年前)進(jìn)線一般是2.5平方毫米的鋁線，因此，同時(shí)開(kāi)啟的家用電器不得超過(guò)13A(即2800瓦)。</p><p style="text-indent:25px">若鋁芯絕緣線明敷在環(huán)境溫度長(zhǎng)期高于25℃的地區(qū)，導(dǎo)線載流量可按上述口訣計(jì)算方法算出，然后再打九折即可；當(dāng)使用的不是鋁線而是銅芯絕緣線，它的載流量要比同規(guī)格鋁線略大一些，可按上述口訣方法算出比鋁線加大一個(gè)線號(hào)的載流量。如16mm’銅線的載流量，可按25mm2鋁線計(jì)算。計(jì)算電纜載流量選擇電纜（根據(jù)電流選擇電纜）：導(dǎo)線的載流量與導(dǎo)線截面有關(guān)，也與導(dǎo)線的材料、型號(hào)、敷設(shè)方法以及環(huán)境溫度等有關(guān)，影響的因素較多，計(jì)算也較復(fù)雜。各種導(dǎo)線的載流量通常可以從手冊(cè)中查找。但利用口訣再配合一些簡(jiǎn)單的心算，便可直接算出，不必查表。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣元電線電纜報(bào)價(jià),電線電纜" src="http://tyunfile.71360.com/UploadFile/cdwckj/637064055705166016/6340643.jpg"></div><p style="text-indent:25px">電纜直接埋在有酸堿作用的地區(qū)，往往會(huì)造成電纜的鎧裝、鉛皮或外護(hù)層被腐蝕，保護(hù)層因長(zhǎng)期遭受化學(xué)腐蝕或電解腐蝕，致使保護(hù)層失效，絕緣降低，也會(huì)導(dǎo)致電纜故障?；?jiǎn)挝坏碾娎|腐蝕情況就相當(dāng)嚴(yán)重。這種情況也很常見(jiàn)，一般發(fā)生在直埋或排管里的電纜接頭處。比如：電纜接頭制作不合格和在潮濕的氣候條件下做接頭，會(huì)使接頭進(jìn)水或混入水蒸氣，時(shí)間久了在電場(chǎng)作用下形成水樹(shù)枝，逐漸損害電纜的絕緣強(qiáng)度而造成故障。由近幾年的運(yùn)行分析來(lái)看，尤其是在經(jīng)濟(jì)高速發(fā)展中的現(xiàn)在，現(xiàn)在相當(dāng)多的電纜故障都是由于機(jī)械損傷引起的。廣元電線電纜報(bào)價(jià)</p><p style="text-indent:25px">廣元電線電纜報(bào)價(jià)</p><p style="text-indent:25px">5、耗電量比較大的家用電器是：空調(diào)(1.2匹)，電熱水器，微波爐，電飯煲，洗碗機(jī)，帶烘干功能的洗衣機(jī)十A，電開(kāi)水器四A在電源引起的火災(zāi)中，有90％是由于接頭發(fā)熱造成的，因此所有的接頭均要焊接，不能焊接的接觸器件5～10年必須更換(比如插座、空氣開(kāi)關(guān)等)。銅芯電線電纜載流量標(biāo)準(zhǔn)電纜載流量口決：估算口訣：二點(diǎn)五下乘以九，往上減一順號(hào)走。三十五乘三點(diǎn)五，雙雙成組減點(diǎn)五。條件有變加折算，高溫九折銅升級(jí)。穿管根數(shù)二三四，八七六折滿載流。廣元電線電纜報(bào)價(jià)</p><p style="text-indent:25px">成都皖川科技有限公司致力于儀器儀表，以科技創(chuàng)新實(shí)現(xiàn)***管理的追求。公司自創(chuàng)立以來(lái)，投身于耐磨熱電偶，氣體檢測(cè)儀器，便攜式氣體報(bào)警控制器，雙金屬溫度計(jì)，是儀器儀表的主力軍。成都皖川科技始終以本分踏實(shí)的精神和必勝的信念，影響并帶動(dòng)團(tuán)隊(duì)取得成功。成都皖川科技始終關(guān)注儀器儀表行業(yè)。滿足市場(chǎng)需求，提高產(chǎn)品價(jià)值，是我們前行的力量。</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/1845327.html</p></div></div></div></div></div><div id="32d8axz" class="page-right twoColRt"><div id="3m3mlsu" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="u7pykwt" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)</p></a></div><div id="gam2egn" class="recomPic likePro"><a 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