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id="1571n5fppxr7" class="inpage_right"> <div id="1571n5fppxr7" class="mbx2"><a href="/">首頁</a> > <a href="/article.html">技術(shù)文章</a> > 耐壓測試儀工作原理</div> <div id="1571n5fppxr7" class="inpage_content"> <div id="1571n5fppxr7" class="nr_main_box"> <h1 class="inside_rnewtil">耐壓測試儀工作原理</h1> <div id="1571n5fppxr7" class="inside_rnewtime">點(diǎn)擊次數(shù)：1463 更新時(shí)間：2019-01-20</div> <div id="1571n5fppxr7" class="inside_rnewcon"><p>耐壓測試的基本原理:把一個(gè)高于正常工作的電壓加在被測設(shè)備的絕緣體上，并持續(xù)一段規(guī)定的時(shí)間，如果其間的絕緣性足夠好，加在上面的電壓就只會產(chǎn)生很小的漏電流。如果一個(gè)被測設(shè)備絕緣體在規(guī)定的時(shí)間內(nèi)，其漏電電流保持在規(guī)定的范圍內(nèi)，就可以確定這個(gè)被測設(shè)備可以在正常的運(yùn)行條件下安全運(yùn)行。進(jìn)行耐壓測試時(shí)，技術(shù)規(guī)格不同被測試品，測量標(biāo)準(zhǔn)也就不同。對一般被測設(shè)備，耐壓測試是測量火線與機(jī)殼之間的漏電流值，基本規(guī)定是:以兩倍于被測物的工作電壓再加1000V作為測試的標(biāo)準(zhǔn)電壓。部分產(chǎn)品的測試電壓可能高于這一規(guī)定值。按照IEC61010的規(guī)定，測試電壓必須在5s內(nèi)逐漸地上升到所要求的試驗(yàn)電壓值(例如5kV等)，保證試驗(yàn)電壓值穩(wěn)定加在被測絕緣體上不少于5s，此時(shí)所測回路的漏電流值與標(biāo)準(zhǔn)規(guī)定的泄漏電流閾值相比較，就可以判斷被測產(chǎn)品的絕緣性能是否符合標(biāo)準(zhǔn)。測試結(jié)束后，試驗(yàn)電壓必須在規(guī)定的時(shí)間內(nèi)逐漸地降至零。</p></div> <div id="1571n5fppxr7" class="inside_newsthree"> <p id="newsprev">上一篇：<b class="newsprev"><a href="/Article-1740738.html">耐壓測試儀下限電流的設(shè)定</a></b></p> <p id="newsnext">下一篇：<b class="newsnext"><a href="/Article-1740735.html">接地電阻測試儀儀表別名與儀表特性</a></b></p> <span><a href="/article.html">返回列表>></a></span> </div> </div> </div> </div> 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