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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>KD/康登</td><th>供貨周期</th><td>現(xiàn)貨</td></tr><tr><th>應用領域</th><td>化工,石油,地礦,電子,交通</td> <th></th><td></td></tr> </tbody> </table> </section><p><span style="color: rgb(0, 0, 0);"><strong>一． <strong>ETCR2000E+多功能鉗形接地電阻測試儀</strong>簡介</strong></span></p><p><span style="color: rgb(0, 0, 0);"><strong>ETCR2000E+多功能鉗形接地電阻測試儀</strong>廣泛應用于電力、電信、氣象、油田、建筑及工業(yè)電氣設備等的接地電阻測量、回路電阻測量。在測量有回路的接地系統(tǒng)時，不需斷開接地引下線，不需輔助電極，安全快速。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，能應用于傳統(tǒng)方法無法測量的場合，ETCR2000E+鉗形接地電阻測試儀測量的是接地體電阻和接地引線電阻的綜合值。</span></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; font-size: 12px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei"; white-space: normal;"><span style="color: rgb(0, 0, 0); font-size: 16px;"><strong><span style="color: rgb(255, 0, 0);">ETCR2000E+多功能鉗形接地電阻儀</span></strong></span><span style="font-size: 14px; color: rgb(0, 0, 0);"><strong><span style="font-size: 14px; color: rgb(255, 0, 0);"></span></strong>廣泛應用于電力、電信、氣象、油田、建筑及工業(yè)電氣設備等的接地電阻測量、回路電阻測量。在測量有回路的接地系統(tǒng)時，不需斷開接地引下線，不需輔助電極，安全快速。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，能應用于傳統(tǒng)方法無法測量的場合，ETCR系列鉗形接地電阻儀測量的是接地體電阻和接地引線電阻的綜合值。<br/>ETCR2000E+多功能鉗形接地電阻儀還能測量接地線上的漏電流，還配置RS232接口和數據線，配合軟件將儀表存儲的數據上傳到計算機并生成報表文件。方便數據的分析和備份。</span></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; font-size: 12px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei"; white-space: normal;"><span style="color: rgb(0, 0, 0); font-size: 16px;"><strong><span style="color: rgb(255, 0, 0);">ETCR2000E+多功能鉗形接地電阻儀</span></strong>測量原理</span><span style="font-size: 14px; color: rgb(0, 0, 0);">：</span></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; font-size: 12px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei"; white-space: normal;"><span style="font-size: 14px; color: rgb(0, 0, 0);">1．電阻測量原理<br/>鉗形接地電阻儀測量接地電阻的基本原理是測量回路電阻。鉗表的鉗口部分由電壓線圈及電流線圈組成。電壓線圈提供激勵信號，并在被測回路上感應一個電勢E。在電勢E的作用下將在被測回路產生電流I。鉗表對E及I進行測量，并通過下面的公式即可得到被測電阻R。<br/>2．電流測量原理<br/>鉗形接地電阻儀測量電流的基本原理與電流互感器的測量原理相同。被測量導線的交流電流I，通過鉗口的電流磁環(huán)及電流線圈產生一個感應電流I1，鉗表對I1進行測量，通過下面的公式即可得到被測電流I。</span></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; font-size: 12px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei"; white-space: normal;"><span style="color: rgb(0, 0, 0); font-size: 16px;"><strong><span style="color: rgb(255, 0, 0);">ETCR2000E+多功能鉗形接地電阻儀</span></strong>技術規(guī)格</span><span style="font-size: 14px; color: rgb(0, 0, 0);">：</span></p><div id="quimsyk" class="tabledivclass" style="width: 99%; float: left;"><table border="1" cellpadding="0" cellspacing="0" align="left" width="649" style="max-width: 748px;"><tbody><tr class="firstRow"><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei";"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">功能</span></p></td><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei"; vertical-align: top;"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">接地電阻測試、回路電阻測試</span></p></td></tr><tr><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei";"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">電源</span></p></td><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei"; vertical-align: top;"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">6VDC（4節(jié)5號堿性干電池）</span></p></td></tr><tr><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei";"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">電阻量程</span></p></td><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei"; vertical-align: top;"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">0.01-1200Ω</span></p></td></tr><tr><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei";"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">電阻分辨率</span></p></td><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei"; vertical-align: top;"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">0.001Ω</span></p></td></tr><tr><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei";"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">電阻zui高精度</span></p></td><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei"; vertical-align: top;"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">±1%±0.01Ω</span></p></td></tr><tr><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei";"><span style="font-size: 14px; color: rgb(0, 0, 0);">電流量程</span></td><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei"; vertical-align: top;"><span style="font-size: 14px; color: rgb(0, 0, 0);">0.00mA-40.0A</span></td></tr><tr><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei";"><span style="font-size: 14px; color: rgb(0, 0, 0);">電流分辨率</span></td><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei"; vertical-align: top;"><span style="font-size: 14px; color: rgb(0, 0, 0);">0.05mA</span></td></tr><tr><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei";"><span style="font-size: 14px; color: rgb(0, 0, 0);">電流zui高精度</span></td><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei"; vertical-align: top;"><span style="font-size: 14px; color: rgb(0, 0, 0);">±2.5%±1mA</span></td></tr><tr><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei";"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">數據存儲</span></p></td><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei"; vertical-align: top;"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">99組</span></p></td></tr><tr><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei";"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">報警臨界值設定范圍</span></p></td><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei"; vertical-align: top;"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">電阻：1-199Ω</span></p></td></tr><tr><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei";"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">聲光報警</span></p></td><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei"; vertical-align: top;"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">“嘟--嘟--嘟--"報警聲，報警符號閃爍，按AL鍵開啟、關閉、設置</span></p></td></tr><tr><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei";"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">干擾信號識別功能</span></p></td><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei"; vertical-align: top;"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">“嘟--嘟--嘟--"提示音，NOISE符號閃爍顯示</span></p></td></tr><tr><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei";"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">工作溫濕度</span></p></td><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei"; vertical-align: top;"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">-20℃-55℃；20％RH-90％RH</span></p></td></tr><tr><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei";"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">液晶顯示器</span></p></td><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei"; vertical-align: top;"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">4位LCD數字顯示，長寬47mm×28.5mm</span></p></td></tr><tr><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei";"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">鉗口尺寸</span></p></td><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei"; vertical-align: top;"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">65mm×32mm</span></p></td></tr><tr><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei";"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">鉗口張開尺寸</span></p></td><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei"; vertical-align: top;"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">32mm</span></p></td></tr><tr><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei";"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">鉗表質量</span></p></td><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei"; vertical-align: top;"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">1160g (含電池)</span></p></td></tr><tr><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei";"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">鉗表尺寸</span></p></td><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei"; vertical-align: top;"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">長、寬、厚：285mm×85mm×56mm</span></p></td></tr><tr><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei";"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">保護等級</span></p></td><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei"; vertical-align: top;"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">雙重絕緣</span></p></td></tr><tr><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei";"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">結構特點</span></p></td><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei"; vertical-align: top;"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">鉗形CT</span></p></td></tr><tr><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei";"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">換檔</span></p></td><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei"; vertical-align: top;"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">全自動換檔</span></p></td></tr><tr><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei";"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">外部磁場</span></p></td><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei"; vertical-align: top;"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">＜40A/m</span></p></td></tr><tr><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei";"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">外部電場</span></p></td><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei"; vertical-align: top;"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">＜1V/m</span></p></td></tr><tr><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei";"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">單次測量時間</span></p></td><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei"; vertical-align: top;"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">0.5秒</span></p></td></tr><tr><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei";"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">電阻測量頻率</span></p></td><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei"; vertical-align: top;"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">＞1KHz</span></p></td></tr><tr><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei";"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">被測電流頻率</span></p></td><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei"; vertical-align: top;"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">50/60Hz自動</span></p></td></tr><tr><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei";"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">電池電壓低指示功能</span></p></td><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei"; vertical-align: top;"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">當電池電壓低于5.3V時，電池電壓低符號顯示</span></p></td></tr><tr><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei";"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">存儲數據已滿指示</span></p></td><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei"; vertical-align: top;"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">存儲數據已滿99組，閃爍顯示“MEM"符號</span></p></td></tr><tr><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei";"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">超量程指示</span></p></td><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei"; vertical-align: top;"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">超量程指示“OLΩ"、“L0.01"或“OL A"</span></p></td></tr><tr><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei";"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">自動關機</span></p></td><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei"; vertical-align: top;"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">開機約5分半鐘儀表將自動關機</span></p></td></tr><tr><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei";"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">功耗</span></p></td><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei"; vertical-align: top;"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">開機啟動、工作zui大電流小于50mA，連續(xù)工作約30小時</span></p></td></tr><tr><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei";"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">RS232接口</span></p></td><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei"; vertical-align: top;"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">儀表存儲的數據通過RS232接口和數據線方便的上傳到計算機，并生成報表文件</span></p></td></tr><tr><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei";"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">隨機附件</span></p></td><td style="margin: 0px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei"; vertical-align: top;"><p style="line-height: 22px;"><span style="font-size: 14px; color: rgb(0, 0, 0);">儀表：1件；數據線：1件；光盤：1件；測試環(huán)：1件；儀表箱： 1件；用戶手冊、保修卡、合格證：1份</span></p></td></tr></tbody></table></div><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; font-size: 12px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei"; white-space: normal;"><span style="color: rgb(0, 0, 0);"> </span></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; font-size: 12px; color: rgb(96, 111, 108); line-height: 22px; font-family: "Microsoft YaHei"; white-space: normal;"><br/></p><p style="margin: 0px; padding: 0px; font-family: 宋體, Tahoma, Arial; font-size: 14px;"><span style="font-family: 微軟雅黑, "microsoft yahei"; font-size: 16px; color: rgb(0, 0, 0);">傳統(tǒng)的輸電線路桿塔地網接地電阻均采用ZC-8 接地搖表（以下簡稱接地搖表)來進行測量，此后也出現(xiàn)了GEO-XP 等一系列接地電阻測試儀。使用接地搖表是將接地線從桿塔下部接地樁解開及打輔助接地極，使被測的接地極從接地系統(tǒng)中分離，然后將電壓極及電流極按規(guī)定的距離打入土壤中作為輔助電極才能進行測量，且所測接地電阻僅為桿塔接地裝置本身的接地電阻。</span></p><p style="margin: 0px; padding: 0px; font-family: 宋體, Tahoma, Arial; font-size: 14px;"><span style="color: rgb(0, 0, 0);"><span style="font-size: 16px; color: rgb(0, 0, 0); font-family: 微軟雅黑, "microsoft yahei";">當使用</span><span style="font-size: 16px; color: rgb(0, 0, 0); font-family: 微軟雅黑, "microsoft yahei";">ETCR2000系列鉗形表</span><span style="color: rgb(63, 63, 63); font-size: 16px;"><span style="color: rgb(0, 0, 0); font-family: 微軟雅黑, "microsoft yahei";">( 以下簡稱鉗形表) 進行測試時，對于有雙接地引下線的線路桿塔，連通圖如圖1，該法實際上測量的是回路的導通電阻。</span><span style="color: rgb(0, 0, 0); font-family: "microsoft yahei", 微軟雅黑, sans-serif;">測試回路導通電阻時，回路中包含有接地網回路的導通電阻、接地引下線的電阻、桿塔本身的導通電阻。因而桿塔本身的狀態(tài)也會影響鉗形表的測試結果。需要注意的是，引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通電阻的影響因素。</span></span></span></p><p style="margin: 0px; padding: 0px; font-family: 宋體, Tahoma, Arial; font-size: 14px;"><br/></p><p style="margin: 0px; padding: 0px; font-family: 宋體, Tahoma, Arial; font-size: 14px;"><br/></p><p style="margin: 0px; padding: 0px; font-family: 宋體, Tahoma, Arial; font-size: 14px; text-align: center;"><img alt="輸電線路桿塔接地網導通電阻測試圖桿塔接地" data-bd-imgshare-binded="1" src="https://img50.chem17.com/gxhpic_3cd5e59743/344151f648682f187dfca7a3e1d602a41978bd9c334cf6f2845a8b8322b010930d37e2ab2b685ab5.png" style="border:0px; height:236px; margin:0px; max-width:100%; padding:0px; width:370px"/></p><p style="margin: 0px; padding: 0px; font-family: 宋體, Tahoma, Arial; font-size: 14px; text-align: center;"><span style="font-size: 16px; color: rgb(0, 0, 0);">圖1 輸電線路桿塔接地網導通電阻測試圖</span></p><p style="margin: 0px; padding: 0px; font-family: 宋體, Tahoma, Arial; font-size: 14px;"><span style="font-size: 16px; color: rgb(0, 0, 0);">若2 根引下線有1 根斷開或者是單接地引下線<span style="font-size: 16px; color: rgb(0, 0, 0); font-family: "microsoft yahei", 微軟雅黑, sans-serif;">的線路桿塔，則引下線可以通過避雷線和其他桿塔地網與本塔地網構成回路，此時測量的是接地電阻。如圖2。</span></span></p><p style="margin: 0px; padding: 0px; font-family: 宋體, Tahoma, Arial; font-size: 14px; text-align: center;"><span style="font-family: "microsoft yahei", 微軟雅黑, sans-serif; font-size: 16px; color: rgb(0, 0, 0);"><img alt="輸電線路接地電阻測試原理圖" data-bd-imgshare-binded="1" src="https://img50.chem17.com/gxhpic_3cd5e59743/344151f648682f187dfca7a3e1d602a409d0b11c78168c9666550e742ddf867fca56035ddee2310c.png" style="border:0px; height:239px; margin:0px; max-width:100%; padding:0px; width:473px"/></span></p><p style="margin: 0px; padding: 0px; font-family: 宋體, Tahoma, Arial; font-size: 14px; text-align: center;"><span style="font-family: "microsoft yahei", 微軟雅黑, sans-serif; font-size: 16px; color: rgb(0, 0, 0);">圖2 輸電線路接地電阻測試原理圖</span></p><p style="margin: 0px; padding: 0px; font-family: 宋體, Tahoma, Arial; font-size: 14px; text-align: center;"><span style="font-family: "microsoft yahei", 微軟雅黑, sans-serif; font-size: 16px; color: rgb(0, 0, 0);"><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="https://img50.chem17.com/gxhpic_3cd5e59743/344151f648682f187dfca7a3e1d602a4d96d52b25bd9f3a96df114a8d843a51423de26a4dfa89f18.png" style="border:0px; height:157px; margin:0px; max-width:100%; padding:0px; width:473px"/></span></p><p style="margin: 0px; padding: 0px; font-family: 宋體, Tahoma, Arial; font-size: 14px; text-align: center;"><span style="font-family: "microsoft yahei", 微軟雅黑, sans-serif; font-size: 16px; color: rgb(0, 0, 0);">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; font-family: 宋體, Tahoma, Arial; font-size: 14px;"><span style="font-family: "microsoft yahei", 微軟雅黑, sans-serif; font-size: 16px; color: rgb(0, 0, 0);">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。根據鉗形表的測試原理，實際上鉗形表測試出的電阻就是上述4 個數值的和。所以一般來講，其測試數值是大于ZC-8 接地搖表數值的。</span></p><p style="margin: 0px; padding: 0px; font-family: 宋體, Tahoma, Arial; font-size: 14px;"><br/></p><p style="margin: 0px; padding: 0px; font-family: 宋體, Tahoma, Arial; font-size: 14px;"><span style="font-size: 16px; color: rgb(0, 0, 0);">分別用鉗形表和接地搖表對湖南省內100多處基<span style="font-size: 16px; color: rgb(0, 0, 0); font-family: "microsoft yahei", 微軟雅黑, sans-serif;">涉及不同電壓等級的輸電線路桿塔的接地電阻和接地導通電阻進行了測量，通過大量現(xiàn)場試驗發(fā)現(xiàn): 鉗形表測量的接地電阻一般較接地搖表測量結果偏大，誤差一般小于1 Ω。而鉗形表的導通電阻測量結果為接地搖表的8 ～ 10 倍。從2 種測試儀器的測試數據來看: 鉗形表測量的導通電阻包含有接地網回路的導通電阻、接地引下線的電阻、桿塔本身的導通電阻。而接地搖表僅測試部分引下線和接地網回路的導通電阻值。因而鉗形表測試數據遠較接地搖表測試導通電阻大，但是更為實用。</span></span></p><p style="margin: 0px; padding: 0px; font-family: 宋體, Tahoma, Arial; font-size: 14px;"><br/></p><p style="margin: 0px; padding: 0px; font-family: 宋體, Tahoma, Arial; font-size: 14px;"><span style="font-size: 16px; color: rgb(0, 0, 0);">通過大量現(xiàn)場試驗發(fā)現(xiàn): 在利用鉗形表<span style="font-size: 16px; color: rgb(0, 0, 0); font-family: "microsoft yahei", 微軟雅黑, sans-serif;">對輸電線路桿塔地網接地導通進行測量時，只要是針對不同引下線測試桿塔回路導通電阻數值沒有大的偏差，并且導通電阻值測量值在2 Ω 以下的，桿塔接地網本身導通便不存在銹斷或脫落的情況，只是桿塔接地網有腐蝕而已。圖4為在湖南某電業(yè)局進行線路( 220 kV 宗柏線001 號) 導通電阻測試時發(fā)現(xiàn)導通電阻嚴重偏大后現(xiàn)場開挖的圖片，也驗證了利用鉗形表測量輸電線路桿塔導通的有效性及實用性。</span></span></p><p style="margin: 0px; padding: 0px; font-family: 宋體, Tahoma, Arial; font-size: 14px; text-align: center;"><img alt="桿塔接地裝置現(xiàn)場開挖圖" data-bd-imgshare-binded="1" src="https://img50.chem17.com/gxhpic_3cd5e59743/344151f648682f187dfca7a3e1d602a4272c489da0b35bcb7e1246771e441e76902d0fec5d49eb04.png" style="border:0px; height:266px; margin:0px; max-width:100%; padding:0px; width:472px"/></p><p style="margin: 0px; padding: 0px; font-family: 宋體, Tahoma, Arial; font-size: 14px; text-align: center;"><span style="font-size: 16px; color: rgb(0, 0, 0);">圖4 桿塔接地裝置現(xiàn)場開挖圖</span></p><p style="margin: 0px; padding: 0px; font-family: 宋體, Tahoma, Arial; font-size: 14px;"><span style="font-size: 16px; color: rgb(0, 0, 0);">對比傳統(tǒng)的<span style="font-size: 16px; color: rgb(0, 0, 0); font-family: 微軟雅黑, "microsoft yahei";">接地搖表，</span>鉗形表攜帶方便，操作簡單，讀數快捷，<span style="font-size: 16px; color: rgb(0, 0, 0); font-family: "microsoft yahei", 微軟雅黑, sans-serif;">大大縮短了測試桿塔接地電阻和導通電阻的時間，提高了工作效率。利用鉗形表測量，可對桿塔導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。</span></span></p><p style="margin: 0px; padding: 0px; font-family: 宋體, Tahoma, Arial; font-size: 14px;"><br/></p><p style="text-align:center"><span style="color: rgb(0, 0, 0);"><strong><img alt="" src="https://img50.chem17.com/gxhpic_3cd5e59743/344151f648682f187dfca7a3e1d602a4e41c58340d1d85a034a646110696e453c471a1bdd92ae4ba.jpg" style="height:auto; margin:0px auto 5px !important"/></strong></span></p><p><br/></p></div> <div id="quimsyk" class="tagContent" id="tagContent1" style="display: block;"><link 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