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電力根據(jù)《醫(yī)用電氣設(shè)備安全通用要求》和《家用和類似用途電器的安全通用要求》而研發(fā)生產(chǎn)的一款針對安規(guī)設(shè)備的接地電阻測試儀，接地電阻測試同時適用于測量各種電機、電器、儀器儀表、等設(shè)備的保護接地端和可觸及的金屬殼體之間的電阻值。</span>多功能接地電阻測試儀<span style="font-family:arial,helvetica,sans-serif">它具有測量準確，使用安全，操作方便等優(yōu)點。符合GB4706.1和GB9706.1等國家標準中相關(guān)條款的試驗要求所需的測試設(shè)備。</span></p><p style="padding: 0px; margin: 0px; font-size: 14px; font-family: 宋體, Arial, sans-serif; color: rgb(0, 0, 0);">多功能接地電阻測試儀<span style="font-family:arial,helvetica,sans-serif">是衡量各種電器設(shè)備安全性能的重要指標。它是在大電流（2或10A）的情況下對接地回路的電阻進行測量，同時也是對接地回路承受大電流的指標的測試。DI2572接地電阻測試儀適用于測量各種電機、電器、儀器儀表、家用電器等設(shè)備外殼與其電源接地之間的電阻值。具有二檔測試電流（R﹤200 mΩ( AC 2)或200 mΩ﹤R﹤600 mΩ (AC 10A)），過電流（AC >30A）保護功能，采用除法器的原理進行測量，測試電流的波動不會對測量精度造成影響。</span></p><p style="padding: 0px; margin: 0px; font-size: 14px; font-family: 宋體, Arial, sans-serif; color: rgb(0, 0, 0);">多功能接地電阻測試儀<span style="font-family:arial,helvetica,sans-serif">操作方法：</span></p><p style="padding: 0px; margin: 0px; font-size: 14px; font-family: 宋體, Arial, sans-serif; color: rgb(0, 0, 0);"><span style="font-family:arial,helvetica,sans-serif"><span style="color:rgb(67, 67, 67)">1.初始狀態(tài)： </span><br /><span style="color:rgb(67, 67, 67)">接通DI2572接地電阻測試儀工作電源，打開“電源”開關(guān)，儀器的電流、接地電阻、時間顯示窗口顯示都為0，此時儀器處于初始狀態(tài)，并預(yù)熱 5min。 </span><br /><span style="color:rgb(67, 67, 67)">2.功能鍵說明和設(shè)定： </span><br /><span style="color:rgb(67, 67, 67)">3.報警接地電阻值設(shè)定： </span><br /><span style="color:rgb(67, 67, 67)">按一下“設(shè)定”鍵，電流顯示窗口顯示“A---” ，接地電阻顯示窗口顯示上一次設(shè)定的接地電阻報警值，按“△”鍵（增加）或“▽”鍵（減少）來得到所需要的報警接地電阻值，再按一下“設(shè)定”鍵，即保存接地電阻報警值同時進入時間設(shè)定。</span><br /><span style="color:rgb(67, 67, 67)">4. 時間設(shè)定： </span><br /><span style="color:rgb(67, 67, 67)">當接地電阻報警值被保存同時，電流顯示窗口顯示“T---”，時間顯示窗口顯示上一次設(shè)定的測試時間，此時可按“△”鍵或“▽”鍵來得到所需測試時間，再按一下“設(shè)定”鍵，即保存時間設(shè)定值同時進入測試電阻補償值設(shè)定。 </span><br /><span style="color:rgb(67, 67, 67)">注：當設(shè)定值為0時，測試時間為∞即可連續(xù)測試。 </span><br /><span style="color:rgb(67, 67, 67)">5. 測試電阻補償值設(shè)定: </span><br /><span style="color:rgb(67, 67, 67)">當時間設(shè)定值被保存同時，電流顯示窗口顯示“P.---” ，電阻顯示窗口顯示上一次測試電阻補償值，這時可按“△”鍵或“▽”鍵來得到所需補償值，再按一下“設(shè)定”鍵，即保存測試電阻補償值同時進入開路報警功能設(shè)定。 </span><br /><span style="color:rgb(67, 67, 67)">注1：當測試電阻補償值不為0時，“補償”燈亮，測量時顯示的接地電阻值，已自動減去設(shè)定的補償值。該功能用于扣除測量線電阻和夾具的接觸電阻引起的誤差。</span><br /><span style="color:rgb(67, 67, 67)">注2：確認測試電阻補償值的操作方法 </span></span><br />多功能接地電阻測試儀<span style="font-family:arial,helvetica,sans-serif"><span style="color:rgb(67, 67, 67)">在初始狀態(tài)下，將測量線的夾子對接，然后按動“啟動”鍵。若是要旋動“電流調(diào)節(jié)”旋鈕，使測試電流達到規(guī)定值。然后讀出接地電阻顯示窗口示值，即為測試電阻補償值。在設(shè)定時，將它設(shè)為測試電阻補償值即可。</span><br /><span style="color:rgb(67, 67, 67)">6. 開路報警功能設(shè)定 </span><br /><span style="color:rgb(67, 67, 67)">當測試電阻補償值測試電流值被保存同時，電流顯示窗口顯示“H---”，電阻顯示窗口顯示開路報警功能“ON”（采用報警）或“OFF”（取消報警）。按動“△”鍵或“▽”鍵可輪流切換，來得到所需狀態(tài)，再按一下“設(shè)定”鍵，則儀器回到測量初始狀態(tài)。 </span><br /><span style="color:rgb(67, 67, 67)">注：若只需對上述某一項進行設(shè)定，可按動“設(shè)定”鍵至電流顯示窗口顯示所需符號，以后步驟同該項后續(xù)操作方法。</span><br /><span style="color:rgb(67, 67, 67)">7. 操作步驟 </span><br /><span style="color:rgb(67, 67, 67)">a.完成功能設(shè)定后，使儀器處于初始狀態(tài)。 </span><br /><span style="color:rgb(67, 67, 67)">b.按圖4正確接線。</span><br /><span style="color:rgb(67, 67, 67)"> 將一副（二組）測試線，紅線組中粗、細測量棒一端分別插入測試儀“A”、“a”測量端上（粗線對“A” ，細線對“a”）；黑線組中粗、細測量棒一端分別插入測量儀“B”、“b”測量端上（粗線對“B”，細線對“b”），測量線另一端的夾子分別接被測設(shè)備保護可觸及的金屬殼體和接地端。注：有的用戶將電源線插頭上接地端代替被測物接地端，這樣給測量帶來誤差，會增加引線電阻引起的測量值。當大電流流過接地線，接地線會發(fā)熱，所以所測量時間不宜過長。</span><br /><span style="color:rgb(67, 67, 67)"> </span><img src="http://www.kv-kva.com/UploadFiles/2016520151112290.jpg" style="border:0px; height:247px; margin:0px; max-width:100%; padding:0px; width:271px" /><br /><span style="color:rgb(67, 67, 67)">c.測試步驟 </span><br /><span style="color:rgb(67, 67, 67)">1)單次測試 </span><br /><span style="color:rgb(67, 67, 67)"> 按一下“啟動”按鈕，“測量”指示燈亮。</span><br /><span style="color:rgb(67, 67, 67)">調(diào)節(jié)面板上的“電流調(diào)節(jié)”旋鈕，至所需測試電流值。此時時間窗口顯示剩余測試時間。如被測物合格，測試時間一到，儀器會發(fā)出“嘟”一聲后，且“合格”指示燈亮，電阻顯示窗口示值即為被測物的接地電阻值；當測量電阻值大于報警設(shè)定值時，“報警”指示燈亮，待測試時間一到，DI2572接地電阻測試儀停止工作，并發(fā)出聲報警，則判被測物為不合格品。然后按一下“復(fù)位”鍵，儀器退出測量狀態(tài)，回到初始狀態(tài)，“測量”指示燈滅。 </span><br /><span style="color:rgb(67, 67, 67)">2)連續(xù)測試 </span><br /><span style="color:rgb(67, 67, 67)"> 當時間顯示窗口顯示為“0”時，按一下“啟動”按鈕，就能連續(xù)對被測物進行測試，不必再按動“啟動”按鈕。測量中結(jié)果判斷為實時顯示值。</span><br /><span style="color:rgb(67, 67, 67)">a.在測試過程中，當接地電阻測量值超出測量范圍時，接地電阻顯示窗口顯示“――――”，如果被測物上沒有電流，則認為不構(gòu)成回路，接地電阻值無窮大，儀器顯示“――――”。 </span><br /><span style="color:rgb(67, 67, 67)">b.在測試過程中，當測試電流小于 1A 時， “欠流”指示燈亮，當測試電流大于 30A 時，DI2572接地電阻測試儀自動切斷電流，停止測試，并且“過流”指示燈亮，接地電阻顯示窗口顯示“――――”。</span></span></p></div> <div id="quimsyk" class="inside_newsthree"> <p id="newsprev">上一篇：<b class="newsprev"><a href="/Article-2272438.html">絕緣電阻測試儀 31號令防雷檢測儀</a></b></p> <p id="newsnext">下一篇：<b class="newsnext"><a 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