數(shù)字接地電阻測試儀使用范圍主要特點-上?？档请姎饪萍加邢薰?/title> <link type="text/css" rel="stylesheet" href="/Skins/106676/css/index.css" /> <script src="/skins/106676/js/jquery-3.6.0.min.js"></script> <link rel="stylesheet" type="text/css" href="/skins/106676/css/swiper.min.css"> <script type="text/javascript" src="/skins/106676/js/swiper.min.js"></script>  <script language="javascript" type="text/javascript"> var nav= '5'; var menu= '0'; </script>  <link rel="shortcut icon" href="/skins/106676/favicon.ico"> <script type="application/ld+json"> { "@context": "https://ziyuan.baidu.com/contexts/cambrian.jsonld", "@id": "http://m.globalchairs.cn/Article-1087045.html", "title": "數(shù)字接地電阻測試儀使用范圍主要特點", "pubDate": "2016-12-23T18:58:29", "upDate": "2016-12-23T18:58:29" }</script> <script language="javaScript" src="/js/JSChat.js"></script><script language="javaScript">function ChatBoxClickGXH() { DoChatBoxClickGXH('https://chat.chem17.com',83189) }</script><script>!window.jQuery && document.write('<script 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class="wrapper w_100">  <div id="yq00aqiue" class="t-bg w_100"> <div id="yq00aqiue" class="topline w_1100"> <p class="fl">歡迎訪問上?？档请姎饪萍加邢薰揪W(wǎng)站</p> <p class="fr"><a href="/" class="wx">返回首頁</a>|<a href="/contact.html" target="_blank">聯(lián)系我們</a></p> </div> </div>  <div id="yq00aqiue" class="header w_1100"> <div id="yq00aqiue" class="logo"><a href="/"><img src="/Skins/106676/images/logo.jpg" alt="上?？档请姎饪萍加邢薰? /></a></div> <div id="yq00aqiue" class="top_tel"><p>全國統(tǒng)一服務(wù)熱線：</p><span>18317043208</span></div> </div>  <div id="yq00aqiue" class="h-bg w_100"> <div id="yq00aqiue" class="inner w_1100"> <div id="yq00aqiue" class="topmenu"> <ul> <li id="navId1"><a href="/">網(wǎng)站首頁</a></li> <li id="navId2"><a href="/aboutus.html">公司簡介</a></li> <li id="navId3"><a href="/products.html">產(chǎn)品中心</a></li> <li id="navId4"><a href="/news.html">新聞資訊</a></li> <li id="navId5"><a href="/article.html">技術(shù)文章</a></li> <li id="navId8"><a href="/down.html">資料下載</a></li> <li id="navId6"><a 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href="/article.html">技術(shù)文章</a> > 數(shù)字接地電阻測試儀使用范圍主要特點</span></div>  <div id="yq00aqiue" class="n-3 c-news"> <div id="yq00aqiue" class="newsnr"> <h1>數(shù)字接地電阻測試儀使用范圍主要特點</h1> <p class="source"><span>日期：2016-12-23</span><span>瀏覽：1567次</span></p> <div> <p> </p><p> <span style="font-size:16px"> 數(shù)字接地電阻測試儀使用范圍主要特點？</span></p><p><span style="font-size:16px"><span style="font-family:nsimsun"> 數(shù)字接地電阻測試儀</span><span style="font-family:宋體">工作原理</span><span style="font-family:宋體">本表摒棄傳統(tǒng)的人工手搖發(fā)電工作方式，采用*的中大規(guī)模集成電路，應(yīng)用DC/AC變換技術(shù)將三端鈕、四端鈕測量方式合并為一種機型的新型接地電阻測量儀。</span><br /><span style="font-family:宋體">工作原理為由機內(nèi)DC/AC變換器將直流變?yōu)榻涣鞯牡皖l恒流，經(jīng)過輔助接地極C和被測物E組成回路，被測物上產(chǎn)生交流壓降，經(jīng)輔助接地極P送入交流放大器放大，再經(jīng)過檢波送入表頭顯示。借助倍率開關(guān)，可得到三個不同的量限：0～2Ω，0～20Ω，0～200Ω。</span><br /><span style="font-family:宋體">2、使用范圍</span><br /><span style="font-family:宋體">本表適用于電力、郵電、鐵路、通信、礦山等部門測量各種裝置的接地電阻以及測量低電阻的導(dǎo)體電阻值；本表還可測量土壤電阻率及地電壓。</span><br /><span style="font-family:宋體">3、主要特點</span><br /><span style="font-family:宋體">· 結(jié)構(gòu)上采用高強度鋁合金作為機殼，電路上為防止工頻、射頻干擾采用鎖相環(huán)同步跟蹤檢波方式并配以開關(guān)電容濾波器，使儀表有較好的抗干擾能力。</span><br /><span style="font-family:宋體">· 采用DC/AC變換技術(shù)將直流變?yōu)榻涣鞯牡皖l恒定電流以便于測量。</span><br /><span style="font-family:宋體">· 允許輔助接地電阻在0～2KΩ（RC），0～40KΩ（RP）之間變化，不致于影響測量結(jié)果。</span><br /><span style="font-family:宋體">·本儀表不需人工調(diào)節(jié)平衡，3(1/2)位LCD顯示，除測地電阻外，還可測低電阻導(dǎo)體電阻、土壤電阻率以及交流地電壓。</span><br /><span style="font-family:宋體">·如若測試回路不通表頭顯示“1”代表溢出，符合常規(guī)測量習(xí)慣。</span><br /><br /><span style="font-family:宋體">二、</span><span style="font-family:nsimsun">HT2571數(shù)字接地電阻測試儀</span><span style="font-family:宋體">技術(shù)指標(biāo)</span><br /><span style="font-family:宋體">1、使用條件</span><br /><span style="font-family:宋體">環(huán)境溫度：0℃～+45℃</span><br /><span style="font-family:宋體">相對濕度：≤85%RH</span><br /><span style="font-family:宋體">2、測量范圍及恒流值（有效值）</span><br /><span style="font-family:宋體">電阻：0～2Ω（10mA），2～20Ω(10mA)，20～200Ω(1mA)</span><br /><span style="font-family:宋體">電壓：AC 0～20V</span><br /><span style="font-family:宋體">3、測量精度及分辨率</span><br /><span style="font-family:宋體">精度：0～0.2Ω≤±3%±1d</span><br /><span style="font-family:宋體">0.2Ω～200Ω≤±1.5%±1d</span><br /><span style="font-family:宋體">1～20V≤±3%±1d</span><br /><span style="font-family:宋體">分辨率：0.001Ω、0.01Ω、0.1Ω、0.01V</span><br /><span style="font-family:宋體">4、輔助接地電阻及地電壓引起的測量誤差</span><br /><span style="font-family:宋體">·允許輔助接地電阻RC（C1與C2之間）</span><br /><span style="font-family:宋體">0～2Ω，2～20Ω ≤1KΩ</span><br /><span style="font-family:宋體">20～200Ω ≤2KΩ</span><br /><span style="font-family:宋體">RP（P1與P2之間）<40KΩ 誤差≤±5%</span><br /><span style="font-family:宋體">·允許地電壓（工頻有效值）≤5V 誤差≤±5%</span><br /><span style="font-family:宋體">5、電源及功耗</span><br /><span style="font-family:宋體">zui大功率損耗≤2W</span><br /><span style="font-family:宋體">直流：8×1.5V(AA，R6)電池</span><br /><span style="font-family:宋體">交流：220V/50Hz</span><br /><span style="font-family:宋體">6、體積與重量</span><br /><span style="font-family:宋體">體積：220mm×200mm×105mm</span><br /><span style="font-family:宋體">重量：≤1.4kg</span><br /><br /><span style="font-family:宋體">三、</span><span style="font-family:nsimsun">HT2571數(shù)字接地電阻測試儀</span><span style="font-family:宋體">使用方法</span><br /><span style="font-family:宋體">1、接地電阻測量（如圖一）</span><br /><br /><img alt="" src="http://i01.yizimg.com/ComFolder/586162/201403/%E5%9B%BE%E7%89%87111.jpg" style="height:auto; margin:0px auto 5px !important; width:280px" /><br /><span style="font-family:宋體">· 沿被測接地極E（C2、P2）和電位探針P1及電流探針C1，依直線彼此相距20米，使電位探針處于E、C中間位置，按要求將探針插入大地。</span><br /><span style="font-family:宋體">· 用導(dǎo)線將地阻儀端子E（C2、P2）、P1、C1與探針?biāo)谖恢脤?yīng)聯(lián)接。</span><br /><span style="font-family:宋體">· 開啟地阻儀電源開關(guān)“ON”，選擇合適擋位輕按一下鍵該檔指標(biāo)燈亮，表頭LCD顯示的數(shù)值即為被測得的地電阻。</span><br /><span style="font-family:宋體">2、土壤電阻率測量（如圖二）</span><br /><br /><img alt="" src="http://i01.yizimg.com/ComFolder/586162/201403/%E6%88%AA%E5%9B%BE20140324135627.jpg" style="height:auto; margin:0px auto 5px !important; width:262px" /><br /><span style="font-family:宋體">· 測量時在被測的土壤中沿直線插入四根探針，并使各探針間距相等，各間距的距離為L，要求探針入地深度為L/20cm，用導(dǎo)線分別從C1、P1、P2、C2各端子與四根探針相連接。若地阻儀測出電阻值為R，則土壤電阻率按下式計算：</span><br /><span style="font-family:宋體">Ф=2πRL</span><span style="font-family:宋體"> </span><br /><span style="font-family:宋體">其中</span><br /><span style="font-family:宋體">Ф—土壤電阻率（Ω·cm）</span><br /><span style="font-family:宋體">L—探針與探針之間的距離(cm)</span><br /><span style="font-family:宋體">R—地阻儀的讀數(shù)（Ω）</span><br /><span style="font-family:宋體">用此法測得的土壤電阻率可近似認(rèn)為是被埋入探針之間區(qū)域內(nèi)的平均土壤電阻率。</span><br /><span style="font-family:宋體">· 測地電阻、土壤電阻率所用的探針一般用鋁合金管或圓鋼。</span><br /><span style="font-family:宋體">3、導(dǎo)體電阻測量（圖三）</span><br /><img alt="" src="http://i01.yizimg.com/ComFolder/586162/201403/%E6%88%AA%E5%9B%BE20140324135716.jpg" style="height:auto; margin:0px auto 5px !important; width:287px" /><br /><span style="font-family:宋體">4、地電壓測量</span><br /><span style="font-family:宋體">測量接線如圖一，撥掉C1插頭，E、P1間的插頭保留，啟動地電壓（EV）檔，指示燈亮，讀取表頭數(shù)值即為E、P1間的交流地電壓值。</span><br /><span style="font-family:宋體">5、測量完畢按一下電源“OFF”鍵，儀表關(guān)機。</span><br /><span style="font-family:宋體">四、注意事項</span><br /><span style="font-family:宋體">1、存放保管本表時，應(yīng)注意環(huán)境溫度濕度，應(yīng)放在干燥通風(fēng)的地方為宜，避免受潮，應(yīng)防止酸堿及腐蝕氣體。</span><br /><span style="font-family:宋體">2、測量保護(hù)接地電阻時，一定要斷開電氣設(shè)備與電源連接點。在測量小于1Ω的接地電阻時，應(yīng)分別用導(dǎo)線連在接地體上，C2在外側(cè)P2在內(nèi)側(cè)如圖四所示：</span><br /><br /><img alt="" src="http://i01.yizimg.com/ComFolder/586162/201403/%E6%88%AA%E5%9B%BE20140324135754.jpg" style="height:auto; margin:0px auto 5px !important; width:315px" /><br /><span style="font-family:宋體">3、測量大型接地網(wǎng)接地電阻時，不能按一般接線方法測量，可參照電流表、電壓表測量法中的規(guī)定選定埋插點。</span><br /><span style="font-family:宋體">4、測量地電阻時反復(fù)在不同的方向測量3～4次，取其平均值。</span><br /><span style="font-family:宋體">5、本儀表為交直流兩用，不接交流電時，儀表使用電池供電，接入交流時，優(yōu)先使用交流電。</span><br /><span style="font-family:宋體">6、當(dāng)表頭左上角顯示“←”時表示電池電壓不足，應(yīng)更換新電池。儀表長期不用時，應(yīng)將電池全部取出，以免銹蝕儀表。</span><br /><br /><span style="font-family:宋體">五、附件清單</span><br /><span style="font-family:宋體">１．儀器主機 1臺</span><br /><span style="font-family:宋體">２．測試線共4根</span><br /><span style="font-family:宋體">包含：1.5m紅線 1根</span><br /><span style="font-family:宋體">1.5m黑線 1根</span><br /><span style="font-family:宋體">20m黑線 1根</span><br /><span style="font-family:宋體">40m紅線 1根</span><br /><span style="font-family:宋體">3．接地探針 2根</span><br /><span style="font-family:宋體">4. 電池 8節(jié)</span><br /><span style="font-family:宋體">5．電源線 1根</span><br /><span style="font-family:宋體">6．產(chǎn)品使用說明書 1本</span><br /><span style="font-family:宋體">7. 出廠報告 1份</span><br /><span style="font-family:宋體">8．合格證 1張</span></span></p> <div id="yq00aqiue" class="clear"></div> </div> <div id="yq00aqiue" class="article"> <p>上一篇：<a 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SMHY電動自控試壓泵</a></li> <li><a href="/SonList-1323450.html">> 電動切管套絲機</a></li> <li><a href="/SonList-1323449.html">> 手動試壓泵</a></li> <li><a href="/SonList-1323448.html">> 電動試壓泵</a></li> <li><a href="/SonList-1323446.html">> 臥式液壓彎管機</a></li> <li><a href="/SonList-1323445.html">> 液壓電動彎管機</a></li> </ul> </div> </li> <li><a href="/ParentList-1324114.html" onmouseover="showsubmenu('紅外線測溫儀')" class="yj">紅外線測溫儀</a> <div class="yq00aqiue" id="submenu_紅外線測溫儀" style="display:none"> <ul> <li><a href="/SonList-1416980.html">> ET紅外線測溫儀</a></li> <li><a href="/SonList-1416968.html">> SM紅外線測溫儀</a></li> <li><a href="/SonList-1341762.html">> OT-8898紅外線測溫儀</a></li> <li><a href="/SonList-1324120.html">> 噪聲儀</a></li> <li><a href="/SonList-1324119.html">> 測厚儀</a></li> <li><a href="/SonList-1324118.html">> 軸承故障測試儀</a></li> <li><a href="/SonList-1324117.html">> 測振儀</a></li> <li><a href="/SonList-1324116.html">> 轉(zhuǎn)速表</a></li> <li><a href="/SonList-1324115.html">> 測溫儀</a></li> </ul> </div> </li> <li><a 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