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關(guān)于高頻變壓器的基本常識(shí)</h3>
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<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??014-11-21 15:26:00</span>
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<p> <span style="font-size: 16px">變壓器是一種能夠?qū)㈦姽β蔬M(jìn)行傳送的電力設(shè)備，原則上說(shuō)變壓器由于設(shè)計(jì)制造使得自身會(huì)消耗掉一局部電功率，但是說(shuō)道變壓器的功率時(shí)大多是將自身這部分消耗忽略不計(jì)的，也就是變壓器銘牌上標(biāo)稱的額定功率，指的變壓器每個(gè)線圈的額定功率，就拿雙卷變壓器來(lái)說(shuō)吧，無(wú)論高壓側(cè)還是低壓側(cè)其額定功率都是一樣的也就是說(shuō)電壓高的一側(cè)繞組，其額定電流要小，而電壓低的一側(cè)其額定電流要大一些，總之每側(cè)繞組的電流和電壓的乘積是相等的，即功率是相等的，這些都是遵照能量守恒的原則的，還有就是電力變壓器一經(jīng)制造完成其額定功率、各側(cè)的額定電流和額定電壓、變比等也就基本確定了至于你說(shuō)的增壓，一般電力變壓器所能進(jìn)行的，電壓的調(diào)整都是相對(duì)很小的，也就是通過(guò)調(diào)整裝置在高壓側(cè)線圈上的分接開(kāi)關(guān)的位置，改變高壓側(cè)線圈接入電路中的電阻的大小來(lái)改變低壓側(cè)的電壓或電流的大小，也就是說(shuō)變壓器字面上看是變壓，其實(shí)在變壓的同時(shí)也就改變了電流的大小，總之額定功率一定時(shí)，電壓高的一側(cè)電流就小，電壓低的一側(cè)電流就大，但是各側(cè)電流和電壓的乘積是相等的，準(zhǔn)確地說(shuō)變壓器的功率不會(huì)隨著電壓和電流的變化而變化的??/span></p>
<p> </p>
<p><span style="font-size: 16px"> 常用??/span><strong><a href="http://www.linhang.com.cn/Products/products-12081703391.html"><span style="font-size: 16px">高頻變壓??/span></a></strong><span style="font-size: 16px">的種類與特點(diǎn)??/span></p>
<p> </p>
<p><span style="font-size: 16px"> 一、常用變壓器的分類可歸納如下??/span></p>
<p> </p>
<p><span style="font-size: 16px"> 1、按相數(shù)分：</span></p>
<p> </p>
<p><span style="font-size: 16px"> 1)、單相變壓器：用于單相負(fù)荷和三相變壓器組??/span></p>
<p> </p>
<p><span style="font-size: 16px"> 2)、三相變壓器：用于三相系統(tǒng)的升、降電壓??/span></p>
<p> </p>
<p><span style="font-size: 16px"> 2、按冷卻方式分：</span></p>
<p> </p>
<p><span style="font-size: 16px"> 1)干式變壓器：一般用于局部照明、電子線路等小容量變壓器。依靠空氣對(duì)流進(jìn)行冷卻??/span></p>
<p> </p>
<p><span style="font-size: 16px"> 2)油浸式變壓器：依靠油作冷卻介質(zhì)、如油浸自冷、油浸風(fēng)冷、油浸水冷、強(qiáng)迫油循環(huán)等??/span></p>
<p> </p>
<p><span style="font-size: 16px"> 3、按用途分??/span></p>
<p> </p>
<p><span style="font-size: 16px"> 1)電力變壓器：用于輸配電系統(tǒng)的升、降電壓??/span></p>
<p> </p>
<p><span style="font-size: 16px"> 2)儀用變壓器：如電壓互感器、電流互感器、用于丈量?jī)x表和繼電保護(hù)裝置??/span></p>
<p> </p>
<p><span style="font-size: 16px"> 3)試驗(yàn)變壓器：能產(chǎn)生高壓，對(duì)電氣設(shè)備進(jìn)行高壓試驗(yàn)??/span></p>
<p> </p>
<p><span style="font-size: 16px"> 4)特種變壓器：如電爐變壓器、整流變壓器、調(diào)整變壓器等??/span></p>
<p> </p>
<p><span style="font-size: 16px"> 4、按繞組形式分：</span></p>
<p> </p>
<p><span style="font-size: 16px"> 1)雙繞組變壓器：用于連接電力系統(tǒng)中的兩個(gè)電壓等級(jí)??/span></p>
<p> </p>
<p><span style="font-size: 16px"> 2)三繞組變壓器：一般用于電力系統(tǒng)區(qū)域變電站中，連接三個(gè)電壓等級(jí)??/span></p>
<p> </p>
<p><span style="font-size: 16px"> 3)自耦變電器：用于連接不同電壓的電力系統(tǒng)。也可做為普通的升壓或降后變壓器用??/span></p>
<p> </p>
<p><span style="font-size: 16px"> 5、按鐵芯形式分：</span></p>
<p> </p>
<p><span style="font-size: 16px"> 1)芯式變壓器：用于高壓的電力變壓器??/span></p>
<p> </p>
<p><span style="font-size: 16px"> 2)殼式變壓器：用于大電流的特殊變壓器，如電爐變壓器、電焊變壓器;或用于電子儀器及電視、收音機(jī)等的電源變壓器??/span></p>
<p> </p>
<p><span style="font-size: 16px"> 變壓器是變換交流電壓、電流和阻抗的器件，當(dāng)初級(jí)線圈中通有交流電流時(shí)，鐵芯(或磁??中便發(fā)生交流磁通，使次級(jí)線圈中 感應(yīng)出電??或電??變壓器由鐵芯(或磁??和線圈組成，線圈有兩個(gè)或兩個(gè)以上的繞組，其中接電源的繞組叫初級(jí)線圈，其余 繞組叫次級(jí)線圈??/span></p>
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