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class="b-1">產(chǎn)品特性<span>Product characteristics</span></div> <link type="text/css" rel="stylesheet" href="/css/property.css"> <script> window.onload=function(){ changeTableHeight(); } window.onresize=function(){ changeTableHeight(); } function changeTableHeight(){ $(".proshowParameter table th").each(function?(i,o){ ????var $this=$(o),? ????height=$this.next().height(); ????$(this).css("height",height); var obj = $(o); var val = obj.text(); if(val == '' || val == null || val == undefined){ $(this).addClass('none'); }else{ $(this).removeClass('none'); } }); $(".proshowParameter table td").each(function?(i,o){ var obj = $(o); var val = obj.text(); if(val == '' || val == null || val == undefined){ $(this).addClass('none'); }else{ $(this).removeClass('none'); } }); } </script> <section class="proshowParameter"> <table style=" margin-bottom:20px;"> <tbody> <tr><th>品牌</th><td>其他品牌</td><th>產(chǎn)地類別</th><td>國產(chǎn)</td></tr><tr><th>類型</th><td>數(shù)字式電阻測試儀</td><th>測量范圍</th><td>0.010Ω~1200ΩMΩ</td></tr><tr><th>電源</th><td>5號(hào)電池（LR6）x4節(jié)</td><th>測試電壓</th><td>150vV</td></tr><tr><th>精度</th><td> ±1% </td><th>重復(fù)誤差</th><td> ±0.01Ω*</td></tr><tr><th>環(huán)境溫度</th><td>35</td><th>相對濕度</th><td>85</td></tr><tr><th>校準(zhǔn)周期</th><td>3</td><th>尺寸</th><td>285mm×85mm×56mmkg</td></tr><tr><th>重量</th><td>1160g kg</td><th>應(yīng)用領(lǐng)域</th><td>醫(yī)療衛(wèi)生,環(huán)保,石油,電子,交通</td></tr> </tbody> </table> </section><p><span style="color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px">ETCR2000+鉗形接地電阻測試儀，接地電阻和回路電阻測量（量程：0.010Ω~1200Ω）。在測量有回路的接地系統(tǒng)時(shí)，不需斷開接地引下線，不需輔助電極，只需把鉗表直接鉗在接地引下線上即可，此時(shí)鉗表顯示值是接地體電阻和接地引線電阻的綜合值，該測量方法能快速、安全的得出測量結(jié)果。</span></p><p><span style="color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px">ETCR鉗形接地電阻儀能測量出用傳統(tǒng)方法無法測量的接地故障，能應(yīng)用于傳統(tǒng)方法無法測量的場合，并且廣泛應(yīng)用于各種設(shè)備的接地電阻測量。</span></p><p> </p><p style="text-align:center"><img alt="ETCR2000+鉗形接地電阻測試儀" src="http://res.etcr.com.cn/yitai/CgAGfFo2K36AbyDHAAEgBjKo8b4718.png" style="height:auto" /></p><p style="text-align:center"> </p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px;"><span style="font-size:16px; margin:0px"><strong style="margin:0px">現(xiàn)場應(yīng)用</strong></span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-size: 14px; font-family: 宋體, Tahoma, Arial;"><span style="color:rgb(63, 63, 63); font-size:16px; margin:0px"><span style="font-family:微軟雅黑,microsoft yahei; margin:0px">當(dāng)使用</span></span><span style="font-size:16px; margin:0px"><span style="font-family:微軟雅黑,microsoft yahei; margin:0px">ETCR2000系列鉗形表</span></span><span style="color:rgb(63, 63, 63); font-size:16px; margin:0px"><span style="font-family:微軟雅黑,microsoft yahei; margin:0px">( 以下簡稱鉗形表) 進(jìn)行測試時(shí)，對于有雙接地引下線的線路桿塔，連通圖如圖1，該法實(shí)際上測量的是回路的導(dǎo)通電阻。</span><span style="font-family:microsoft yahei,微軟雅黑,sans-serif; margin:0px">測試回路導(dǎo)通電阻時(shí)，回路中包含有接地網(wǎng)回</span><span style="font-family:microsoft yahei,微軟雅黑,sans-serif; margin:0px">路的導(dǎo)通電阻、接地引下線的電阻、桿塔本身的導(dǎo)通電阻。因而桿塔本身的狀態(tài)也會(huì)影響鉗形表的測試結(jié)果。</span><span style="font-family:microsoft yahei,微軟雅黑,sans-serif; margin:0px">需要注意的是，引</span><span style="font-family:microsoft yahei,微軟雅黑,sans-serif; margin:0px">下線與大地的接觸電阻、桿塔本身接地引下線處涂防腐漆等也是影響回路導(dǎo)通電阻的影響因素。</span></span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-size: 14px; font-family: 宋體, Tahoma, Arial;"> </p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-size: 14px; font-family: 宋體, Tahoma, Arial;"> </p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-size: 14px; font-family: 宋體, Tahoma, Arial; text-align: center;"><img alt="輸電線路桿塔接地網(wǎng)導(dǎo)通電阻測試圖桿塔接地" data-bd-imgshare-binded="1" src="http://00.rc.xiniu.com/g2/M00/58/D3/CgAGe1pu3YeAML46AABcjI4hgVc650.png" style="border:0px; height:236px; margin:0px; max-width:100%; padding:0px; width:370px" /></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-size: 14px; font-family: 宋體, Tahoma, Arial; text-align: center;"><span style="color:rgb(63, 63, 63); font-size:16px; margin:0px">圖1 輸電線路桿塔接地網(wǎng)導(dǎo)通電阻測試圖</span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-size: 14px; font-family: 宋體, Tahoma, Arial;"><span style="color:rgb(63, 63, 63); font-size:16px; margin:0px">若2 根引下線有1 根斷開或者是單接地引下線<span style="font-family:microsoft yahei,微軟雅黑,sans-serif; margin:0px">的線路桿塔，則引下線可以通過避雷線和其他桿塔地網(wǎng)與本塔地網(wǎng)構(gòu)成回路，此時(shí)測量的是接地電阻。如圖2。</span></span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-size: 14px; font-family: 宋體, Tahoma, Arial; text-align: center;"><span style="color:rgb(63, 63, 63); font-family:microsoft yahei,微軟雅黑,sans-serif; font-size:16px; margin:0px"><img alt="輸電線路接地電阻測試原理圖" data-bd-imgshare-binded="1" src="http://00.rc.xiniu.com/g2/M00/58/D3/CgAGe1pu3hKAZZeMAABwLrVk-Sk545.png" style="border:0px; height:239px; margin:0px; max-width:100%; padding:0px; width:473px" /></span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-size: 14px; font-family: 宋體, Tahoma, Arial; text-align: center;"><span style="color:rgb(63, 63, 63); font-family:microsoft yahei,微軟雅黑,sans-serif; font-size:16px; margin:0px">圖2 輸電線路接地電阻測試原理圖</span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-size: 14px; font-family: 宋體, Tahoma, Arial; text-align: center;"><span style="color:rgb(63, 63, 63); font-family:microsoft yahei,微軟雅黑,sans-serif; font-size:16px; margin:0px"><img alt="鉗形表測量線路桿塔接地電阻等值電路圖" data-bd-imgshare-binded="1" src="http://00.rc.xiniu.com/g2/M00/58/D4/CgAGe1pu3mqAIjrwAABcaBd-ZR0178.png" style="border:0px; height:157px; margin:0px; max-width:100%; padding:0px; width:473px" /></span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-size: 14px; font-family: 宋體, Tahoma, Arial; text-align: center;"><span style="color:rgb(63, 63, 63); font-family:microsoft yahei,微軟雅黑,sans-serif; font-size:16px; margin:0px">圖3 鉗形表測量線路桿塔接地電阻等值電路圖</span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-size: 14px; font-family: 宋體, Tahoma, Arial;"><span style="color:rgb(63, 63, 63); font-family:microsoft yahei,微軟雅黑,sans-serif; font-size:16px; margin:0px">圖3則為利用鉗形表測量輸電線路桿塔接地阻抗其中R1+jXg 為欲測桿塔的接地阻抗。在接地電阻的測試回路中，還包含有避雷器阻抗( Z = R+jX) 和桿塔之間電阻的互阻抗( 在接地回路正常的情況下很小) 以及其它桿塔的接地電阻并聯(lián)后的等效電阻。根據(jù)鉗形表的測試原理，實(shí)際上鉗形表測試出的電阻就是上述4 個(gè)數(shù)值的和。所以一般來講，其測試數(shù)值是大于ZC-8 接地?fù)u表數(shù)值的。</span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-size: 14px; font-family: 宋體, Tahoma, Arial;"> </p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-size: 14px; font-family: 宋體, Tahoma, Arial;"><span style="color:rgb(63, 63, 63); font-size:16px; margin:0px">分別用鉗形表和接地?fù)u表對湖南省內(nèi)100多處基<span style="font-family:microsoft yahei,微軟雅黑,sans-serif; margin:0px">涉及不同電壓等級(jí)的輸電線路桿塔的接地電阻和接地導(dǎo)通電阻進(jìn)行了測量，通過大量現(xiàn)場試驗(yàn)發(fā)現(xiàn): 鉗形表測量的接地電阻一般較接地?fù)u表測量結(jié)果偏大，誤差一般小于1 Ω。而鉗形表的導(dǎo)通電阻測量結(jié)果為接地?fù)u表的8 ～ 10 倍。從2 種測試儀器的測試數(shù)據(jù)來看: 鉗形表測量的導(dǎo)通電阻包含有接地網(wǎng)回路的導(dǎo)通電阻、接地引下線的電阻、桿塔本身的導(dǎo)通電阻。而接地?fù)u表僅測試部分引下線和接地網(wǎng)回路的導(dǎo)通電阻值。因而鉗形表測試數(shù)據(jù)遠(yuǎn)較接地?fù)u表測試導(dǎo)通電阻大，但是更為實(shí)用。</span></span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-size: 14px; font-family: 宋體, Tahoma, Arial;"> </p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-size: 14px; font-family: 宋體, Tahoma, Arial;"><span style="color:rgb(63, 63, 63); font-size:16px; margin:0px">通過大量現(xiàn)場試驗(yàn)發(fā)現(xiàn): 在利用鉗形表<span style="font-family:microsoft yahei,微軟雅黑,sans-serif; margin:0px">對輸電線路桿塔地網(wǎng)接地導(dǎo)通進(jìn)行測量時(shí)，只要是針對不同引下線測試桿塔回路導(dǎo)通電阻數(shù)值沒有大的偏差，并且導(dǎo)通電阻值測量值在2 Ω 以下的，桿塔接地網(wǎng)本身導(dǎo)通便不存在銹斷或脫落的情況，只是桿塔接地網(wǎng)有腐蝕而已。圖4為在湖南某電業(yè)局</span><span style="font-family:microsoft yahei,微軟雅黑,sans-serif; margin:0px">進(jìn)行線路( 220 kV 宗柏線001 號(hào)) 導(dǎo)通電阻測試</span><span style="font-family:microsoft yahei,微軟雅黑,sans-serif; margin:0px">時(shí)發(fā)現(xiàn)導(dǎo)通電阻嚴(yán)重偏大后現(xiàn)場開挖的圖片，也驗(yàn)證了利用鉗形表測量輸電線路桿塔導(dǎo)通的有效性及實(shí)用性。</span></span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-size: 14px; font-family: 宋體, Tahoma, Arial; text-align: center;"><img alt="桿塔接地裝置現(xiàn)場開挖圖" data-bd-imgshare-binded="1" src="http://00.rc.xiniu.com/g2/M00/58/DD/CgAGe1pu5OqASMVWAAJzFMsU5O4757.png" style="border:0px; height:266px; margin:0px; max-width:100%; padding:0px; width:472px" /></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-size: 14px; font-family: 宋體, Tahoma, Arial; text-align: center;"><span style="color:rgb(63, 63, 63); font-size:16px; margin:0px">圖4 桿塔接地裝置現(xiàn)場開挖圖</span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-size: 14px; font-family: 宋體, Tahoma, Arial;"><span style="color:rgb(63, 63, 63); font-size:16px; margin:0px">對比傳統(tǒng)的<span style="font-family:微軟雅黑,microsoft yahei; margin:0px">接地?fù)u表，</span>鉗形表攜帶方便，操作簡單，讀數(shù)快捷，<span style="font-family:microsoft yahei,微軟雅黑,sans-serif; margin:0px">大大縮短了測試桿塔接地電阻和導(dǎo)通電阻的時(shí)間，提高了工作效率。利用鉗形表測量，可對桿塔導(dǎo)通是否存在銹斷或被偷盜的情況作出判斷，為在線監(jiān)測發(fā)展奠定了基礎(chǔ)。</span></span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-size: 14px; font-family: 宋體, Tahoma, Arial;"><img alt="" data-bd-imgshare-binded="1" src="https://img47.chem17.com/gxhpic_884f2b1889/40ae40a7fdb8a92131f06d6719f22892008f26f46cbc8a75ef202dd45416e23ad2d8658ea5beb9b8.png" style="border:0px; height:489px; margin:0px; max-width:100%; padding:0px; width:492px" /></p><p style="text-align:center"> </p><p style="text-align:center"> </p><p style="text-align:center"> </p><table border="1" cellpadding="0" cellspacing="0" class="ueditorTableStyle" style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); -webkit-user-drag:none; background-color:rgb(255, 255, 255); border-collapse:collapse; border-spacing:0px; box-sizing:border-box; color:rgb(51, 51, 51); empty-cells:show; font-family:微軟雅黑; font-size:12px; margin:0px; max-width:100%; outline:0px; padding:0px; text-size-adjust:none; width:852px"><tbody><tr><td><span style="color:rgb(63, 63, 63); font-size:16px">電源</span></td><td><span style="color:rgb(63, 63, 63); font-size:16px">5號(hào)電池（LR6）x4節(jié)</span></td></tr><tr><td><span style="color:rgb(63, 63, 63); font-size:16px">鉗口尺寸</span></td><td><span style="color:rgb(63, 63, 63); font-size:16px">65mm×32mm</span></td></tr><tr><td><span style="color:rgb(63, 63, 63); font-size:16px">液晶尺寸</span></td><td><span style="color:rgb(63, 63, 63); font-size:16px">4位LCD數(shù)字顯示，長寬47mm×28.5mm</span></td></tr><tr><td><span style="color:rgb(63, 63, 63); font-size:16px">量程</span></td><td><span style="color:rgb(63, 63, 63); font-size:16px">0.010Ω~1200Ω</span></td></tr><tr><td><span style="color:rgb(63, 63, 63); font-size:16px">分辨力</span></td><td><span style="color:rgb(63, 63, 63); font-size:16px">0.001Ω</span></td></tr><tr><td><span style="color:rgb(63, 63, 63); font-size:16px">精度</span></td><td><span style="color:rgb(63, 63, 63); font-size:16px">±1%±0.01Ω*（z 高精度）</span></td></tr><tr><td><span style="color:rgb(63, 63, 63); font-size:16px">數(shù)據(jù)存儲(chǔ)</span></td><td><span style="color:rgb(63, 63, 63); font-size:16px">99組</span></td></tr><tr><td><span style="color:rgb(63, 63, 63); font-size:16px">數(shù)據(jù)上傳功能</span></td><td><span style="color:rgb(63, 63, 63); font-size:16px">選購</span></td></tr><tr><td><span style="color:rgb(63, 63, 63); font-size:16px">自動(dòng)關(guān)機(jī)</span></td><td><span style="color:rgb(63, 63, 63); font-size:16px">5分鐘左右自動(dòng)關(guān)機(jī)</span></td></tr><tr><td><span style="color:rgb(63, 63, 63); font-size:16px">功耗</span></td><td><span style="color:rgb(63, 63, 63); font-size:16px">≤50mA，連續(xù)工作約30小時(shí)</span></td></tr><tr><td><span style="color:rgb(63, 63, 63); font-size:16px">工作環(huán)境</span></td><td><span style="color:rgb(63, 63, 63); font-size:16px">-20℃~55℃；20%rh~80%rh</span></td></tr><tr><td><span style="color:rgb(63, 63, 63); font-size:16px">存放環(huán)境</span></td><td><span style="color:rgb(63, 63, 63); font-size:16px">-20℃~60℃；90%rh以下</span></td></tr><tr><td><span style="color:rgb(63, 63, 63); font-size:16px">報(bào)警臨界值設(shè)定范圍</span></td><td><span style="color:rgb(63, 63, 63); font-size:16px">電阻：1~199Ω</span></td></tr><tr><td><span style="color:rgb(63, 63, 63); font-size:16px">聲光報(bào)警</span></td><td><span style="color:rgb(63, 63, 63); font-size:16px">“嘟--嘟--嘟--”報(bào)警聲，報(bào)警符號(hào)閃爍，按AL鍵開啟、關(guān)閉、設(shè)置</span></td></tr><tr><td><span style="color:rgb(63, 63, 63); font-size:16px">干擾信號(hào)識(shí)別功能</span></td><td><span style="color:rgb(63, 63, 63); font-size:16px">“嘟--嘟--嘟--”提示音，NOISE符號(hào)閃爍顯示</span></td></tr><tr><td><span style="color:rgb(63, 63, 63); font-size:16px">保護(hù)等級(jí)</span></td><td><span style="color:rgb(63, 63, 63); font-size:16px">雙重絕緣</span></td></tr><tr><td><span style="color:rgb(63, 63, 63); font-size:16px">結(jié)構(gòu)特點(diǎn)</span></td><td><span style="color:rgb(63, 63, 63); font-size:16px">鉗形CT</span></td></tr><tr><td><span style="color:rgb(63, 63, 63); font-size:16px">換檔</span></td><td><span style="color:rgb(63, 63, 63); font-size:16px">全自動(dòng)換檔</span></td></tr><tr><td><span style="color:rgb(63, 63, 63); font-size:16px">外部磁場</span></td><td><span style="color:rgb(63, 63, 63); font-size:16px">＜40A/m</span></td></tr><tr><td><span style="color:rgb(63, 63, 63); font-size:16px">外部電場</span></td><td><span style="color:rgb(63, 63, 63); font-size:16px">＜1V/m</span></td></tr><tr><td><span style="color:rgb(63, 63, 63); font-size:16px">單次測量時(shí)間</span></td><td><span style="color:rgb(63, 63, 63); font-size:16px">0.5秒</span></td></tr><tr><td><span style="color:rgb(63, 63, 63); font-size:16px">電阻測量頻率</span></td><td><span style="color:rgb(63, 63, 63); font-size:16px">＞1KHz</span></td></tr><tr><td><span style="color:rgb(63, 63, 63); font-size:16px">被測電流頻率</span></td><td><span style="color:rgb(63, 63, 63); font-size:16px">50/60Hz自動(dòng)</span></td></tr><tr><td><span style="color:rgb(63, 63, 63); font-size:16px">電池電壓低指示功能</span></td><td><span style="color:rgb(63, 63, 63); font-size:16px">當(dāng)電池電壓低于5.3V時(shí)，電池電壓低符號(hào)顯示</span></td></tr><tr><td><span style="color:rgb(63, 63, 63); font-size:16px">存儲(chǔ)數(shù)據(jù)已滿指示</span></td><td><span style="color:rgb(63, 63, 63); font-size:16px">存儲(chǔ)數(shù)據(jù)已滿99組，閃爍顯示“MEM”符號(hào)</span></td></tr><tr><td><span style="color:rgb(63, 63, 63); font-size:16px">超量程指示</span></td><td><span style="color:rgb(63, 63, 63); font-size:16px">超量程指示“OL Ω”、“L0.01”或“OL A”</span></td></tr><tr><td><span style="color:rgb(63, 63, 63); font-size:16px">鉗表質(zhì)量</span></td><td><span style="color:rgb(63, 63, 63); font-size:16px">1160g (含電池)</span></td></tr><tr><td><span style="color:rgb(63, 63, 63); font-size:16px">鉗表尺寸</span></td><td><span style="color:rgb(63, 63, 63); font-size:16px">長x寬x厚：285mm×85mm×56mm</span><br /> </td></tr></tbody></table> </div> <link rel="stylesheet" type="text/css" href="/css/MessageBoard_style.css"> <script language="javascript" src="/skins/Scripts/order.js?v=20210318" type="text/javascript"></script> <a name="order" id="order"></a> <div id="yq00aqiue" class="ly_msg" id="ly_msg"> <form method="post" name="form2" id="form2"> <h3>留言框 </h3> <ul> <li> <h4 class="xh">產(chǎn)品：</h4> <div id="yq00aqiue" class="msg_ipt1"><input class="textborder" size="30" name="Product" id="Product" value="鉗形接地電阻測試儀" placeholder="請輸入產(chǎn)品名稱" /></div> </li> <li> <h4>您的單位：</h4> <div id="yq00aqiue" class="msg_ipt12"><input class="textborder" size="42" 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