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font-size:13px">ES3002雙鉗多功能接地電阻測(cè)試儀（多功能型）又叫雙鉗接地電阻測(cè)試儀。其集合多種測(cè)量方法于一體的高級(jí)接地電阻測(cè)試儀，該儀表除了具有傳統(tǒng)打輔助地極測(cè)接地電阻的功能外，還具備了無(wú)輔助地極測(cè)量的*功能。它采用了超大LCD灰白屏背光顯示和微處理機(jī)技術(shù)，通過(guò)微處理器控制精密4線法、3線法和簡(jiǎn)易2線法、選擇法、雙鉗法測(cè)量接地電阻測(cè)試。采用大口徑電流鉗設(shè)計(jì)，利用雙鉗口測(cè)量技術(shù)，無(wú)需打輔助地極、無(wú)需將接地體與設(shè)備隔離，實(shí)現(xiàn)了在線測(cè)量。廣泛應(yīng)用于電信、電力、氣象、機(jī)房、油田、電力配電線路、鐵塔輸電線路、加油站、工廠接地網(wǎng)、避雷針等。儀表具有測(cè)試</span><span style="color:#000000"><span style="background-color:rgb(255, 255, 255); font-family:微軟雅黑; font-size:13px"><span id="nxnzvbt5" class="bjFfcClass">*準(zhǔn)</span></span></span>、快速、簡(jiǎn)捷、穩(wěn)定可靠等特點(diǎn)。<br /><br /><span style="background-color:rgb(255, 255, 255); color:rgb(102, 102, 102); font-family:微軟雅黑; font-size:13px">　　由微處理器控制，可</span><span style="color:#000000"><span style="background-color:rgb(255, 255, 255); font-family:微軟雅黑; font-size:13px"><span id="nxnzvbt5" class="bjFfcClass">精*</span></span></span>檢測(cè)接地電阻、土壤電阻率、接地電壓、直流電阻和交流電流。其使用了快速濾波技術(shù)可將干擾減至小。同屏顯示輔助電極的電阻值，方便判斷由于環(huán)境因素帶來(lái)的測(cè)量誤差，便于更準(zhǔn)確測(cè)量接地真實(shí)阻值。同時(shí)存儲(chǔ)500組數(shù)據(jù)，可通過(guò)監(jiān)測(cè)軟件在線監(jiān)測(cè)數(shù)據(jù)，USB數(shù)據(jù)上傳PC并具有數(shù)值保持及智能報(bào)警提示等*功能。<br /><br /><span style="background-color:rgb(255, 255, 255); color:rgb(102, 102, 102); font-family:微軟雅黑; font-size:13px">　　由主機(jī)、監(jiān)控軟件、測(cè)試線、USB線、接地針組成，具有歷史數(shù)據(jù)讀取、查閱、保存、報(bào)表、打印等功能。</span></p><p><span style="background-color:rgb(255, 255, 255); color:rgb(102, 102, 102); font-family:微軟雅黑; font-size:13px"><img alt="" src="http://img75.chem17.com/9/20200930/637370523572532264561.jpg" style="height:400px; width:400px" /></span></p><p> <strong><span style="font-size:16px"><span style="background-color:rgb(255, 255, 255); color:rgb(102, 102, 102); font-family:微軟雅黑">ES3002雙鉗多功能接地電阻測(cè)試儀技術(shù)參數(shù)</span></span></strong></p><p> <span style="background-color:rgb(255, 255, 255); color:rgb(102, 102, 102); font-family:微軟雅黑; font-size:13px">1、量程及精度</span><br /> </p><table border="1" cellpadding="0" cellspacing="0" style="background-color:rgb(255, 255, 255); border:1px solid rgb(204, 204, 204); color:rgb(102, 102, 102); font-family:微軟雅黑; font-size:13px; list-style:none; margin:0px; padding:0px; width:709px"><tbody><tr><td style="height:26px; width:120px">測(cè)量功能</td><td style="height:26px; width:217px">測(cè)量范圍</td><td style="height:26px; width:198px">精度</td><td style="height:26px; width:132px">分辨率</td></tr><tr><td rowspan="4" style="height:26px; width:120px">二三四線法測(cè)量接地電阻(Re)、<br />直流電阻(R—)</td><td style="height:26px; width:217px">0.00Ω～29.99Ω</td><td style="height:26px; width:198px">±2%rdg±5dgt(注1)</td><td style="height:26px; width:132px">0.01Ω</td></tr><tr><td style="height:26px; width:217px">30.0Ω～299.9Ω</td><td style="height:26px; width:198px">±2%rdg±3dgt</td><td style="height:26px; width:132px">0.1Ω</td></tr><tr><td style="height:26px; width:217px">300Ω～2999Ω</td><td style="height:26px; width:198px">±2%rdg±3dgt</td><td style="height:26px; width:132px">1Ω</td></tr><tr><td style="height:26px; width:217px">3.00kΩ～30.00kΩ</td><td style="height:26px; width:198px">±2%rdg±3dgt</td><td style="height:26px; width:132px">10Ω</td></tr><tr><td rowspan="3" style="height:26px; width:120px">選擇法測(cè)量接地電阻(Re)</td><td style="height:26px; width:217px">0.00Ω～29.99Ω</td><td style="height:26px; width:198px">±2%rdg±5dgt(注1)</td><td style="height:26px; width:132px">0.01Ω</td></tr><tr><td style="height:26px; width:217px">30.0Ω～299.9Ω</td><td style="height:26px; width:198px">±2%rdg±3dgt</td><td style="height:26px; width:132px">0.1Ω</td></tr><tr><td style="height:26px; width:217px">300Ω～3000Ω</td><td style="height:26px; width:198px">±2%rdg±3dgt</td><td style="height:26px; width:132px">1Ω</td></tr><tr><td rowspan="3" style="height:26px; width:120px">雙鉗法測(cè)量接地電阻(Re)</td><td style="height:26px; width:217px">0.01Ω～0.99Ω</td><td rowspan="3" style="height:26px; width:198px">±10%rdg±10dgt</td><td style="height:26px; width:132px">0.01Ω</td></tr><tr><td style="height:26px; width:217px">1.0Ω～9.9Ω</td><td style="height:26px; width:132px">0.1Ω</td></tr><tr><td style="height:26px; width:217px">10Ω～100Ω</td><td style="height:26px; width:132px">1Ω</td></tr><tr><td rowspan="6" style="height:26px; width:120px">土壤電阻率(ρ)</td><td style="height:26px; width:217px">0.00Ωm～99.99Ωm</td><td rowspan="6" style="height:26px; width:198px">ρ=2πaR (注2)</td><td style="height:26px; width:132px">0.01Ωm</td></tr><tr><td style="height:26px; width:217px">100.0Ωm～999.9Ωm</td><td style="height:26px; width:132px">0.1Ωm</td></tr><tr><td style="height:26px; width:217px">1000Ωm～9999Ωm</td><td style="height:26px; width:132px">1Ωm</td></tr><tr><td style="height:26px; width:217px">10.00kΩm～99.99kΩm</td><td style="height:26px; width:132px">10Ωm</td></tr><tr><td style="height:26px; width:217px">100.0kΩm～999.9kΩm</td><td style="height:26px; width:132px">100Ωm</td></tr><tr><td style="height:26px; width:217px">1000kΩm～9999kΩm</td><td style="height:26px; width:132px">1kΩm</td></tr><tr><td style="height:44px; width:120px">接地電壓</td><td style="height:44px; width:217px">AC 0.00～100.0V</td><td style="height:44px; width:198px">±2%rdg±3dgt</td><td style="height:44px; width:132px">0.01V</td></tr><tr><td style="height:56px; width:120px">交流電流</td><td style="height:56px; width:217px">AC 0.0mA～1000A</td><td style="height:56px; width:198px">±2%rdg±3dgt</td><td style="height:56px; width:132px">0.1mA</td></tr></tbody></table><p><br /><span style="background-color:rgb(255, 255, 255); color:rgb(102, 102, 102); font-family:微軟雅黑; font-size:13px">注：1. 基準(zhǔn)條件：Rh Rs<100Ω時(shí)的精度。</span><br /><span style="background-color:rgb(255, 255, 255); color:rgb(102, 102, 102); font-family:微軟雅黑; font-size:13px">工作條件:Rh max＝3kΩ+100R＜50kΩ；Rs max＝3kΩ+100R＜50kΩ</span><br /><span style="background-color:rgb(255, 255, 255); color:rgb(102, 102, 102); font-family:微軟雅黑; font-size:13px">2.取決于R的測(cè)量精度而定,π=3.14, a:1 m～100m；</span><br /><span style="background-color:rgb(255, 255, 255); color:rgb(102, 102, 102); font-family:微軟雅黑; font-size:13px"> </span><br /><span style="background-color:rgb(255, 255, 255); color:rgb(102, 102, 102); font-family:微軟雅黑; font-size:13px">2、一般規(guī)格</span><br /> </p><table border="1" cellpadding="0" cellspacing="0" style="background-color:rgb(255, 255, 255); border:1px solid rgb(204, 204, 204); color:rgb(102, 102, 102); font-family:微軟雅黑; font-size:13px; list-style:none; margin:0px; padding:0px; width:709px"><tbody><tr><td style="height:22px; text-align:center; width:100px">功能</td><td style="height:22px; width:520px">接地電阻、土壤電阻率、直流電阻、接地電壓、交流電流</td></tr><tr><td style="text-align:center; width:100px">環(huán)境溫度濕度</td><td style="width:520px">23℃±5℃，75%rh以下</td></tr><tr><td style="text-align:center; width:100px">干擾電壓</td><td style="width:520px">＜20V（應(yīng)避免）</td></tr><tr><td style="text-align:center; width:100px">干擾電流</td><td style="width:520px">＜2A（應(yīng)避免）</td></tr><tr><td style="text-align:center; width:100px">測(cè)R時(shí)電極間距</td><td style="width:520px">a＞5d</td></tr><tr><td style="text-align:center; width:100px">測(cè)ρ時(shí)電極間距</td><td style="width:520px">a＞20h</td></tr><tr><td style="text-align:center; width:100px">電源</td><td style="width:520px">DC 6V 4.5Ah鉛酸蓄電池連續(xù)待機(jī)100小時(shí)以上</td></tr><tr><td style="text-align:center; width:100px">背光</td><td style="width:520px">可控背光，適合昏暗場(chǎng)所使用</td></tr><tr><td style="text-align:center; width:100px">測(cè)量方式</td><td style="width:520px">精密四線、三線法測(cè)量、簡(jiǎn)易二線、選擇法、雙鉗法測(cè)量接地電阻</td></tr><tr><td style="text-align:center; width:100px">測(cè)量方法</td><td style="width:520px">二三四線法測(cè)量：變極法，測(cè)量電流20mA Max<br />土壤電阻率：四極法<br />選擇法測(cè)量：變極法，測(cè)量電流20mA Max<br />雙鉗法：非接觸互感測(cè)量法，測(cè)試電流1mA Max<br />直流電阻：變極法<br />交流電流：平均值整流(鉗形)<br />接地電壓：平均值整流(S-ES接口間)</td></tr><tr><td style="text-align:center; width:100px">測(cè)試電壓波形</td><td style="width:520px">正弦波</td></tr><tr><td style="text-align:center; width:100px">測(cè)試頻率</td><td style="width:520px">128Hz</td></tr><tr><td style="text-align:center; width:100px">短路測(cè)試電流</td><td style="width:520px">AC 20mA max</td></tr><tr><td style="text-align:center; width:100px">開(kāi)路測(cè)試電壓</td><td style="width:520px">AC 28V max</td></tr><tr><td style="text-align:center; width:100px">電極間距范圍</td><td style="width:520px">1m～100m</td></tr><tr><td style="text-align:center; width:100px">顯示模式</td><td style="width:520px">4位超大LCD顯示，帶背光</td></tr><tr><td style="text-align:center; width:100px">測(cè)量指示</td><td style="width:520px">測(cè)量中LED閃爍指示</td></tr><tr><td style="text-align:center; width:100px">LCD尺寸</td><td style="width:520px">111mm×68mm</td></tr><tr><td style="text-align:center; width:100px">LCD顯示域</td><td style="width:520px">108mm×65mm</td></tr><tr><td style="text-align:center; width:100px">儀表尺寸</td><td style="width:520px">長(zhǎng)寬高：277.2mm×227.5mm×153mm</td></tr><tr><td style="text-align:center; width:100px">電流鉗尺寸</td><td style="width:520px">長(zhǎng)厚高：101mm×27mm×214mm</td></tr><tr><td style="text-align:center; width:100px">測(cè) 試線</td><td style="width:520px">4條：紅色15m，黑色15m，黃色10m，綠色10m各1條</td></tr><tr><td style="text-align:center; width:100px">簡(jiǎn)易測(cè)試線</td><td style="width:520px">2條：黃色1.5m，綠色1.5m各1條</td></tr><tr><td style="text-align:center; width:100px">輔助接地棒</td><td style="width:520px">4根：φ10mm×200mm</td></tr><tr><td style="text-align:center; width:100px">電流鉗</td><td style="width:520px">2把：音頻插頭</td></tr><tr><td style="text-align:center; width:100px">電流鉗口徑</td><td style="width:520px">φ50mm</td></tr><tr><td style="text-align:center; width:100px">電流鉗引線</td><td style="width:520px">長(zhǎng)2m</td></tr><tr><td style="text-align:center; width:100px">測(cè)量時(shí)間</td><td style="width:520px">交流電流：約2次/秒<br />對(duì)地電壓：約2次/秒<br />接地電阻、土壤電阻率：約7秒/次</td></tr><tr><td style="text-align:center; width:100px">線路電壓</td><td style="width:520px">AC 100V以下測(cè)量(接地電壓測(cè)量功能不能用于測(cè)量商用電)</td></tr><tr><td style="text-align:center; width:100px">USB接口</td><td style="width:520px">具有USB接口，存儲(chǔ)數(shù)據(jù)可以通過(guò)軟件上傳電腦</td></tr><tr><td style="text-align:center; width:100px">通訊線</td><td style="width:520px">USB通訊線1條，長(zhǎng)1.5m</td></tr><tr><td style="text-align:center; width:100px">數(shù)據(jù)保持</td><td style="width:520px">保持?jǐn)?shù)據(jù)時(shí)“HOLD”符號(hào)指示</td></tr><tr><td style="text-align:center; width:100px">數(shù)據(jù)存儲(chǔ)</td><td style="width:520px">500組，“MEM”存儲(chǔ)指示，顯示“FULL”符號(hào)表示存儲(chǔ)已滿</td></tr><tr><td style="text-align:center; width:100px">數(shù)據(jù)查閱</td><td style="width:520px">查閱數(shù)據(jù)時(shí)“READ”符號(hào)指示</td></tr><tr><td style="text-align:center; width:100px">溢出顯示</td><td style="width:520px">超量程溢出時(shí)“OL”符號(hào)指示</td></tr><tr><td style="text-align:center; width:100px">電流鉗低電流指示</td><td style="width:520px"><img src="file:///C:/Users/ADMINI~1/AppData/Local/Temp/msohtmlclip1/01/clip_image002.gif" style="height:auto !important; margin:0px; width:22" />選擇法或者雙鉗法測(cè)量時(shí),當(dāng)CT2接收的電流信號(hào)低于0.5mA時(shí)，顯示“ ”符號(hào),此時(shí)應(yīng)檢查CT2電流鉗的鉗入方向</td></tr><tr><td style="text-align:center; width:100px">干擾測(cè)試</td><td style="width:520px">自動(dòng)識(shí)別干擾信號(hào)，干擾電壓高于5V時(shí)“NOISE”符號(hào)指示</td></tr><tr><td style="height:33px; text-align:center; width:100px">輔助接地測(cè)試</td><td style="height:33px; width:520px">具有輔助接地電阻值測(cè)試功能，0.00kΩ～30.00kΩ(Rh max＝3kΩ+100R＜50kΩ；Rs max＝3kΩ+100R＜50kΩ)</td></tr><tr><td style="text-align:center; width:100px">報(bào)警功能</td><td style="width:520px">測(cè)量值超過(guò)報(bào)警設(shè)定值時(shí)發(fā)出報(bào)警提示</td></tr><tr><td style="text-align:center; width:100px">電池電壓</td><td style="width:520px">電池電量實(shí)時(shí)顯示，電池電壓低時(shí)提醒及時(shí)充電</td></tr><tr><td style="text-align:center; width:100px">自動(dòng)關(guān)機(jī)</td><td style="width:520px">“APO”指示，開(kāi)機(jī)15分鐘后自動(dòng)關(guān)機(jī)</td></tr><tr><td rowspan="3" style="text-align:center; width:100px">功耗</td><td style="width:520px">待機(jī): 40mA Max(背光關(guān)閉)</td></tr><tr><td style="width:520px">開(kāi)機(jī)開(kāi)背光: 43mA Max</td></tr><tr><td style="width:520px">測(cè)量：120mA Max(背光關(guān)閉)</td></tr><tr><td rowspan="4" style="height:26px; text-align:center; width:100px">質(zhì) 量</td><td style="height:26px; width:520px">儀表： 2430g(含電池)</td></tr><tr><td style="width:520px">電流鉗：936g(2把)</td></tr><tr><td style="width:520px">測(cè)試線：1300g(含簡(jiǎn)易測(cè)試線)</td></tr><tr><td style="width:520px">輔助接地棒： 850g(4根)</td></tr><tr><td style="text-align:center; width:100px">工作溫濕度</td><td style="width:520px">-10℃～40℃；80%rh以下</td></tr><tr><td style="text-align:center; width:100px">存放溫濕度</td><td style="width:520px">-20℃～60℃；70%rh以下</td></tr><tr><td style="text-align:center; width:100px">過(guò)載保護(hù)</td><td style="width:520px">測(cè)量接地電阻： H-E、S-ES各端口間AC 280V/3秒</td></tr><tr><td style="text-align:center; width:100px">絕緣電阻</td><td style="width:520px">20MΩ以上(電路與外殼之間500V)</td></tr><tr><td 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