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</div> </li> </ul> </div> </div></div> <div id="1571n5fppxr7" class="inpage_right"> <div id="1571n5fppxr7" class="mbx2"><a href="/">首頁(yè)</a> > <a href="/article.html">技術(shù)文章</a> > 鉗形接地電阻測(cè)試儀應(yīng)該如何正確使用</div> <div id="1571n5fppxr7" class="inpage_content"> <div id="1571n5fppxr7" class="nr_main_box"> <h1 class="inside_rnewtil">鉗形接地電阻測(cè)試儀應(yīng)該如何正確使用</h1> <div id="1571n5fppxr7" class="inside_rnewtime">點(diǎn)擊次數(shù)：522 更新時(shí)間：2022-04-24</div> <div id="1571n5fppxr7" class="inside_rnewcon"><div><span style="font-size: 16px;"> </span></div><div><span style="font-size: 16px;">　　<span style="color: rgb(0, 0, 0);"><strong><a href="http://bihix.cn/Products-27985060.html" target="_blank"><span style="color: rgb(0, 0, 0);">鉗形接地電阻測(cè)試儀</span></a></strong></span>在測(cè)量有回路的接地系統(tǒng)的時(shí)候，不需要斷開(kāi)接地引下線，不需要輔助電極，安全快速，能測(cè)量出傳統(tǒng)方法無(wú)法測(cè)量的接地故障，可以自動(dòng)檢測(cè)出各接口連接狀況以及地網(wǎng)的干擾電壓，干擾頻率，并具有數(shù)值保持以及智能提示等*功能，所以深受電力工作者的喜愛(ài)，那么鉗形接地電阻測(cè)試儀的工作原理是怎樣的呢。<br /> </span></div><div><span style="font-size: 16px;">　　如何正確的使用</span><strong style="font-size: 16px;">鉗形接地電阻測(cè)試儀</strong><span style="font-size: 16px;">去精確測(cè)量接地電阻。<br /> </span></div><div><span style="font-size: 16px;">　　首先，必須要了解其精確測(cè)量工作原理。鉗型接地電阻測(cè)試儀是用來(lái)精確測(cè)量任何有控制回路系統(tǒng)之接地電阻，該儀器本身能產(chǎn)生一個(gè)電源電勢(shì)，在任何有控制回路系統(tǒng)中就能產(chǎn)生電流，因而其精確測(cè)量工作原理簡(jiǎn)而言之是全電路歐姆定律，它測(cè)出的是這個(gè)控制回路系統(tǒng)的環(huán)路電阻值。<br /> </span></div><div><span style="font-size: 16px;">　　用鉗型接地電阻測(cè)試儀精確測(cè)量電力線路桿塔接地電阻方法簡(jiǎn)單，精確測(cè)量結(jié)果準(zhǔn)確性高，但只能用于有架空地線的高壓線路上，精確測(cè)量時(shí)待測(cè)桿塔只允許普遍存在一條接地引下線，如各塔腳的地網(wǎng)并不是連通的，應(yīng)將其余各腳的接地引下線拆開(kāi)后用臨時(shí)線與精確測(cè)量腳的引下線連通(連通點(diǎn)在鉗表之下)。通過(guò)對(duì)精確測(cè)量結(jié)果的分析，可以判斷出各塔腳的地網(wǎng)是否連通，接地引下線是否普遍存在接觸不良的隱患。<br /> </span></div><div><span style="font-size: 16px;">　　—、接地電阻測(cè)試儀的發(fā)展與選用<br /> </span></div><div><span style="font-size: 16px;">　　接地電阻測(cè)試儀是檢驗(yàn)精確測(cè)量接地電阻的常用儀表，也是電氣設(shè)備安全檢查與接地工程竣工驗(yàn)收*的專(zhuān)用工具，近些年來(lái)由于互聯(lián)網(wǎng)技術(shù)的迅猛發(fā)展，因而接地電阻測(cè)試儀也滲入了大量的微處理機(jī)技術(shù)，其精確測(cè)星功能，內(nèi)容與精密度是一般儀器所不能相比的?，F(xiàn)如今*地電阻測(cè)試儀能滿(mǎn)足所有接地精確測(cè)量要求。運(yùn)用新式鉗口法，不需要打樁施工放線進(jìn)行在線直接精確測(cè)量。一臺(tái)功能強(qiáng)大的地阻測(cè)試儀均由微處理器控制，可自動(dòng)檢測(cè)各接口連接狀況及地網(wǎng)的電磁干擾電壓、電磁千擾頻率，并具備有數(shù)值始終保持及智能提示等*功能。<br /> </span></div><div><span style="font-size: 16px;">　　二、接地電阻測(cè)試儀與發(fā)展<br /> </span></div><div><span style="font-size: 16px;">　　最初人們對(duì)接地電阻的測(cè)量是用伏、安法，這類(lèi)試驗(yàn)是非常原始的。用安培計(jì)、伏特計(jì)的測(cè)量方法。在測(cè)量電阻時(shí)須先估計(jì)電流的大小，選出適當(dāng)截面的絕緣導(dǎo)線，在預(yù)備試驗(yàn)時(shí)可充分利用可變電阻R調(diào)整電流，當(dāng)正式測(cè)量時(shí)，則將可變電阻短路，由安培計(jì)和伏特計(jì)所得的數(shù)值可以算出接地電阻。<br /> </span></div></div> <div id="1571n5fppxr7" class="inside_newsthree"> <p id="newsprev">上一篇：<b class="newsprev"><a href="/Article-3001605.html">DMG2671數(shù)字兆歐表的簡(jiǎn)介</a></b></p> <p id="newsnext">下一篇：<b class="newsnext"><a 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