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</div></div> <div id="1571n5fppxr7" class="inpage_right"> <div id="1571n5fppxr7" class="mbx2"><a href="/">首頁</a> > <a href="/article.html">技術(shù)文章</a> > ES3002雙鉗多功能接地電阻測試儀講解</div> <div id="1571n5fppxr7" class="inpage_content"> <div id="1571n5fppxr7" class="nr_main_box"> <h1 class="inside_rnewtil">ES3002雙鉗多功能接地電阻測試儀講解</h1> <div id="1571n5fppxr7" class="inside_rnewtime">點擊次數(shù)：1229 更新時間：2020-09-30</div> <div id="1571n5fppxr7" class="inside_rnewcon"><p><span style="font-size:16px"><strong><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試儀講解</span></strong></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">ES3002雙鉗多功能接地電阻測試儀（多功能型）又叫雙鉗接地電阻測試儀。其集合多種測量方法于一體的高級接地電阻測試儀，該儀表除了具有傳統(tǒng)打輔助地極測接地電阻的功能外，還具備了無輔助地極測量的*功能。它采用了超大LCD灰白屏背光顯示和微處理機技術(shù)，通過微處理器控制精密4線法、3線法和簡易2線法、選擇法、雙鉗法測量接地電阻測試。采用大口徑電流鉗設(shè)計，利用雙鉗口測量技術(shù)，無需打輔助地極、無需將接地體與設(shè)備隔離，實現(xiàn)了在線測量。廣泛應(yīng)用于電信、電力、氣象、機房、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="1571n5fppxr7" class="bjFfcClass">*準(zhǔn)</span></span></span>、快速、簡捷、穩(wěn)定可靠等特點。<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="1571n5fppxr7" class="bjFfcClass">精*</span></span></span>檢測接地電阻、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)境因素帶來的測量誤差，便于更準(zhǔn)確測量接地真實阻值。同時存儲500組數(shù)據(jù)，可通過監(jiān)測軟件在線監(jiān)測數(shù)據(jù)，USB數(shù)據(jù)上傳PC并具有數(shù)值保持及智能報警提示等*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、監(jiān)控軟件、測試線、USB線、接地針組成，具有歷史數(shù)據(jù)讀取、查閱、保存、報表、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">測量功能</td><td style="height:26px; width:217px">測量范圍</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R時電極間距</td><td style="width:520px">a＞5d</td></tr><tr><td style="text-align:center; width:100px">測ρ時電極間距</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100小時以上</td></tr><tr><td style="text-align:center; width:100px">背光</td><td style="width:520px">可控背光，適合昏暗場所使用</td></tr><tr><td style="text-align:center; width:100px">測量方式</td><td style="width:520px">精密四線、三線法測量、簡易二線、選擇法、雙鉗法測量接地電阻</td></tr><tr><td style="text-align:center; width:100px">測量方法</td><td style="width:520px">二三四線法測量：變極法，測量電流20mA Max<br />土壤電阻率：四極法<br />選擇法測量：變極法，測量電流20mA Max<br />雙鉗法：非接觸互感測量法，測試電流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">測試電壓波形</td><td style="width:520px">正弦波</td></tr><tr><td style="text-align:center; width:100px">測試頻率</td><td style="width:520px">128Hz</td></tr><tr><td style="text-align:center; width:100px">短路測試電流</td><td style="width:520px">AC 20mA max</td></tr><tr><td style="text-align:center; width:100px">開路測試電壓</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">測量指示</td><td style="width:520px">測量中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">長厚高：101mm×27mm×214mm</td></tr><tr><td style="text-align:center; width:100px">測試線</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">簡易測試線</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2m</td></tr><tr><td style="text-align:center; width:100px">測量時間</td><td style="width:520px">交流電流：約2次/秒<br />對地電壓：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以下測量(接地電壓測量功能不能用于測量商用電)</td></tr><tr><td style="text-align:center; width:100px">USB接口</td><td style="width:520px">具有USB接口，存儲數(shù)據(jù)可以通過軟件上傳電腦</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“HOLD”符號指示</td></tr><tr><td style="text-align:center; width:100px">數(shù)據(jù)存儲</td><td style="width:520px">500組，“MEM”存儲指示，顯示“FULL”符號表示存儲已滿</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“READ”符號指示</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“OL”符號指示</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量時,當(dāng)CT2接收的電流信號低于0.5mA時，顯示“ ”符號,此時應(yīng)檢查CT2電流鉗的鉗入方向</td></tr><tr><td style="text-align:center; width:100px">干擾測試</td><td style="width:520px">自動識別干擾信號，干擾電壓高于5V時“NOISE”符號指示</td></tr><tr><td style="height:33px; text-align:center; width:100px">輔助接地測試</td><td style="height:33px; width:520px">具有輔助接地電阻值測試功能，0.00kΩ～30.00kΩ(Rh max＝3kΩ+100R＜50kΩ；Rs max＝3kΩ+100R＜50kΩ)</td></tr><tr><td style="text-align:center; width:100px">報警功能</td><td style="width:520px">測量值超過報警設(shè)定值時發(fā)出報警提示</td></tr><tr><td style="text-align:center; width:100px">電池電壓</td><td style="width:520px">電池電量實時顯示，電池電壓低時提醒及時充電</td></tr><tr><td style="text-align:center; width:100px">自動關(guān)機</td><td style="width:520px">“APO”指示，開機15分鐘后自動關(guān)機</td></tr><tr><td rowspan="3" style="text-align:center; width:100px">功耗</td><td style="width:520px">待機: 40mA Max(背光關(guān)閉)</td></tr><tr><td style="width:520px">開機開背光: 43mA Max</td></tr><tr><td style="width:520px">測量：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">測試線：1300g(含簡易測試線)</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">過載保護</td><td style="width:520px">測量接地電阻： 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 style="text-align:center; width:100px">耐壓</td><td style="width:520px">AC 3700V/rms(電路與外殼之間)</td></tr><tr><td style="text-align:center; width:100px">電磁特性</td><td style="width:520px">IEC61326(EMC)</td></tr><tr><td style="text-align:center; width:100px">適合安規(guī)</td><td style="width:520px">IEC61010-1(CAT Ⅲ 300V、CAT IV 150V、污染度2)；IEC61010-031；<br />IEC61557-1(接地電阻)；<br />IEC61557-5(土壤電阻率)；<br />JJG 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