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<div id="pr3mjyzo" class="appMask"></div> <div id="pr3mjyzo" class="appContent"> <div id="pr3mjyzo" class="appWrapper" id="layout_51530532" role="draggable" data-appid="panel" data-state="false"> <div class="pr3mjyzo" id="layout_51530532_style" class="hide"> </div> <div id="pr3mjyzo" class="appMask"></div> <div id="pr3mjyzo" class="appContent"> <div id="pr3mjyzo" class="phx-panel-wrap" data-showtitle="yes" data-isad="no" data-pattern="fixed" data-place="6" data-width="200" data-height="200"> <div id="pr3mjyzo" class="phx-panel-title clearfix"> <span id="pr3mjyzo" class="text pull-left">文章詳情</span> </div> <div id="pr3mjyzo" class="phx-panel"> <div class="pr3mjyzo" id="app_52253022_style" class="hide"> </div> <div id="pr3mjyzo" class="appWrapper" id="app_52253022" role="draggable" data-type="app" data-appid="datumInfo" data-config="" data-state="true"> <div id="pr3mjyzo" class="appMask"></div> <div id="pr3mjyzo" class="appContent"> <div id="pr3mjyzo" class="datum_info"> <h1 class="title">ZC-90系列高絕緣電阻測量儀性能特點及用途 </h1> <div id="pr3mjyzo" class="bgcolor_01"> <div id="pr3mjyzo" class="bgcolor_sum"> <div id="pr3mjyzo" class="left">日期：2024-11-19 02:46</div> <div id="pr3mjyzo" class="right">瀏覽次數(shù)：211</div> </div> <div id="pr3mjyzo" class="bgcolor_sum01"> 摘要：上?？档请姎饪萍加邢薰? 電力技術(shù) </div> </div> <div id="pr3mjyzo" class="content"> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:18px;">ZC-90系列<strong style="margin:0px;">高絕緣電阻測量儀</strong>性能特點及用途介紹</span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <strong style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">ZC-90<strong style="margin:0px;">高絕緣電阻測量儀</strong></span></span></strong><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">是ZC-90家族中的產(chǎn)品，是一款高性能的數(shù)字式超高阻與微電流綜合測量儀，采用了先進(jìn)的微電流測量器件,其特點為：</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">（1）電阻測量范圍高達(dá)0</span></span><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:"times new roman";">—</span></span><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">2×10</span></span><sup style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">17</span></span></sup><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">Ω（直接測量，如采用電壓-電流法推算，則可測量超過10</span></span><sup style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">18</span></span></sup><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">Ω電阻），是目前超高阻測量能力數(shù)字式儀表，ZC-90G是取代ZC36、ZC46等指針式高阻計進(jìn)行絕緣材料體積電阻率與表面電阻率測量的儀表。高分辨力為100Ω。</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">（2）全系列七種（10，25，50，100，250，500，1000V）輸出電壓，適用于電線電纜、絕緣材料、電子元器件、防靜電工程等一切領(lǐng)域作超高阻、微電導(dǎo)測量。</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">（3）微電流測量功能，電流測量范圍：0.1fA (10</span></span><sup style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">-16</span></span></sup><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">A)</span></span><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:"times new roman";">—</span></span><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">199.9</span></span><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:"times new roman";">μ</span></span><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">A, 是微電流測量靈敏度高、分辨力強(qiáng)的數(shù)字式儀表，適用于半導(dǎo)體器件測試、電子元器件**、光電測量、生物電流測量、原子能研究、科學(xué)實驗等一切微電流測量領(lǐng)域。</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">（4）內(nèi)置高性能可充電電池，免除了更換電池的麻煩，節(jié)省了更換電池的開支。</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">（5）人性化的操作界面。大屏幕、高亮度的液晶顯示屏，除了測量結(jié)果顯示外，還有測量功能顯示、輸出電壓顯示、測量單位顯示、倍率方次顯示、電池低電壓告警顯示、誤操作告警顯示等，所有信息，一目了然。</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <strong style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">ZC-90G的</span></span></strong><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">高阻測量范圍及微電流測量靈敏度達(dá)到了KEITHLEY 6517A </span></span> </p> <table style="margin:0px 0px 0px 5.4pt;border-spacing:0px;color:#555555;background-color:#FFFFFF;font-family:宋體, tahoma, arial;font-size:12px;width:684px;"> <tbody style="margin:0px;"> <tr style="margin:0px;"> <td style="margin:0px;padding:0px;vertical-align:top;width:156px;"> <p style="margin-top:0px;margin-bottom:0px;padding:0px;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">項目</span></span> </p> </td> <td style="margin:0px;padding:0px;vertical-align:top;width:252px;"> <p style="margin-top:0px;margin-bottom:0px;padding:0px;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">美國KEITHLEY 6517A</span></span> </p> </td> <td style="margin:0px;padding:0px;vertical-align:top;width:276px;"> <p style="margin-top:0px;margin-bottom:0px;padding:0px;"> <strong style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;"> ZC-90G</span></span></strong> </p> </td> </tr> <tr style="margin:0px;"> <td style="margin:0px;padding:0px;vertical-align:top;width:156px;"> <p style="margin-top:0px;margin-bottom:0px;padding:0px;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">電阻測量范圍</span></span> </p> </td> <td style="margin:0px;padding:0px;vertical-align:top;width:252px;"> <p style="margin-top:0px;margin-bottom:0px;padding:0px;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;"> 50Ω</span></span><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:"times new roman";">—</span></span><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">1×10</span></span><sup style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">16</span></span></sup><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">Ω</span></span> </p> </td> <td style="margin:0px;padding:0px;vertical-align:top;width:276px;"> <p style="margin-top:0px;margin-bottom:0px;padding:0px;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;"> 100Ω</span></span><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:"times new roman";">—</span></span><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">2×10</span></span><sup style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">17</span></span></sup><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">Ω</span></span> </p> </td> </tr> <tr style="margin:0px;"> <td style="margin:0px;padding:0px;vertical-align:top;width:156px;"> <p style="margin-top:0px;margin-bottom:0px;padding:0px;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">電流測量范圍</span></span> </p> </td> <td style="margin:0px;padding:0px;vertical-align:top;width:252px;"> <p style="margin-top:0px;margin-bottom:0px;padding:0px;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">1fA (10</span></span><sup style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">-15</span></span></sup><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">A)</span></span><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:"times new roman";">—</span></span><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">20mA,</span></span> </p> </td> <td style="margin:0px;padding:0px;vertical-align:top;width:276px;"> <p style="margin-top:0px;margin-bottom:0px;padding:0px;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">0.1fA (10</span></span><sup style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">-16</span></span></sup><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">A)</span></span><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:"times new roman";">—</span></span><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">199.9</span></span><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:"times new roman";">μ</span></span><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">A,</span></span> </p> </td> </tr> <tr style="margin:0px;"> <td style="margin:0px;padding:0px;vertical-align:top;width:156px;"> <p style="margin-top:0px;margin-bottom:0px;padding:0px;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">輸入端零電流</span></span> </p> </td> <td style="margin:0px;padding:0px;vertical-align:top;width:252px;"> <p style="margin-top:0px;margin-bottom:0px;padding:0px;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;"> < 3fA</span></span> </p> </td> <td style="margin:0px;padding:0px;vertical-align:top;width:276px;"> <p style="margin-top:0px;margin-bottom:0px;padding:0px;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;"> < 3fA ( 可補(bǔ)償至零 )</span></span> </p> </td> </tr> </tbody> </table> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <strong style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">系列產(chǎn)品用途簡介：</span></span></strong> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <strong style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">ZC-90 </span></span></strong><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;"> 通用高阻測量，電線電纜測量，電工器材測量，家用電器測量。（老型號）</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <strong style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">ZC-90A</span></span></strong><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;"> 超高阻測量，交聯(lián)聚乙烯電纜測量，絕緣材料電阻率測量。（老型號）</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <strong style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">ZC-90B</span></span></strong><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;"> 防靜電工程電阻測量儀表。（老型號） </span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <strong style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">ZC-90C</span></span></strong><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;"> 礦用防靜電電阻測量儀表。（老型號） </span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <strong style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">ZC-90</span></span></strong><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">（新）ZC-90的改進(jìn)型，大屏帶背光液晶顯示，量程提高10倍，準(zhǔn)確度更高，電源消耗更小。</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <strong style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">ZC-90D </span></span></strong><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;"> 綜合ZC-90B、90C的改進(jìn)型，量程提高10倍，全功能的防靜電工程電阻測量儀表。</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <strong style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">ZC-90E </span></span></strong><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;"> ZC-90A的改進(jìn)型，大屏帶背光液晶顯示，量程提高10倍，準(zhǔn)確度更高，電源消耗更小。</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <strong style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">ZC-90F </span></span></strong><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">超高測量范圍，量程達(dá)到0-2×10</span></span><sup style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">17</span></span></sup><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">Ω，取代ZC36的儀表。</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <strong style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">ZC-90G </span></span></strong><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">高性能全功能超高阻、微電流綜合測量儀表，除了覆蓋ZC-90，90A，90B，90C、90D、90E、90F的全部功能與用途外，其他特點與用途見上述專題介紹。</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="font-family:幼圓;font-size:12pt;"> <img src="http://yt.yzimgs.com/ComFolder/200075902/image/202105/202105092012215601.png" alt=""> </span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">注：由于儀表采用了高準(zhǔn)確度、高穩(wěn)定度的橋式測量電路（數(shù)字比較法測量原理），電阻示值與測量電壓的準(zhǔn)確度無關(guān)，儀表實際上的測量誤差，僅為規(guī)定值的 1/3</span></span><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:"times new roman";">—</span></span><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">1/5。上述基本誤差指標(biāo)，主要是考慮到儀表檢定工作的可行性，因為儀表可以標(biāo)明的準(zhǔn)確度，受到檢定儀表的標(biāo)準(zhǔn)電阻與標(biāo)準(zhǔn)電流源的準(zhǔn)確度的限制（標(biāo)準(zhǔn)器的準(zhǔn)確度必須比被檢儀表高3倍，在超高阻以及極微弱電流的領(lǐng)域里</span></span><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">高準(zhǔn)確度標(biāo)準(zhǔn)器的實現(xiàn)難度遠(yuǎn)大于被檢的測量儀表。） </span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="font-family:幼圓;font-size:12pt;">3.3 分辨力</span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;"> 儀表顯示器在各量程能夠穩(wěn)定讀出的小數(shù)值所對應(yīng)電阻值應(yīng)小于或等于該量程允許誤差的1/10。</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">3.4端鈕電壓誤差</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">儀表的端鈕電壓誤差不大于額定值的±2 % 。</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">3.5端鈕電壓紋波含量</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;"> 儀表端鈕電壓中紋波含量的均方根值不大于直流分量的0.3% 。</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">3.6測量定時誤差</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">儀表的測量定時誤差不大于設(shè)定值的±5% 。</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">3.7電源消耗</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;"> ZC-90、90A、90B、90C小于120mA (500V輸出電壓, 測試100MΩ電阻)；ZC-90（新版）、90D、90E、90F小于60 mA； ZC-90G小于70mA, 內(nèi)置電池可連續(xù)工作30小時。</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">4使用方法 </span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">4.1面板功能介紹 </span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;"> （a）ZC-90，90A，90B，90C面板</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;"><img alt="" src="https://img56.chem17.com/9/20171022/636442583159555134774.png" style="margin:0px;padding:0px;max-height:100%;height:646px;width:771px;"><img alt="" src="https://img55.chem17.com/9/20171022/636442583444723635776.png" style="margin:0px;padding:0px;max-height:100%;height:386px;width:755px;"></span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">其中</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">（1）電源開關(guān) （13）校零旋鈕 </span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">（2）電源指示燈（紅）（14）倍率（量程）選擇開關(guān)</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">（3）讀數(shù)保持開關(guān) （15）高壓（校零）選擇開關(guān)</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">（4）讀數(shù)保持指示燈（綠）（16）功能選擇開關(guān)</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">（5）1分鐘定時開關(guān) （17）液晶顯示屏</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">（6）2分鐘定時開關(guān) （18）定時輸入碼盤 </span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">（7）4分鐘定時開關(guān) （19）“測量—電池”選擇開關(guān)</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">（8）外接（充電）電源插座（20）“電阻—電流”選擇開關(guān)</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">（9）高壓輸出端（21）充電指示燈（黃）</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">（10）測量輸入端（紅）與屏蔽端（黑）（22）“保護(hù)—測量”選擇按鈕</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">（11）濾波器1開關(guān)（90B、90C、90D無）（23）“保護(hù)”狀態(tài)指示燈（紅）</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">（12）濾波器2開關(guān)（90B、90C、90D無） </span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">4.2 顯示屏符號功能</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">4.1（a）ZC-90, 90A, 90B, 90C顯示屏 </span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <img alt="" src="https://img56.chem17.com/9/20171022/636442586055232220494.png" style="margin:0px;padding:0px;max-height:100%;height:170px;width:302px;"> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <img alt="" src="https://img56.chem17.com/9/20171022/636442586419336859464.png" style="margin:0px;padding:0px;max-height:100%;height:695px;width:770px;"> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">其中</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">（1）3 1/2 位測量結(jié)果顯示（10）輸出測量電壓500V</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">（2）E: 倍率方次代號（EXP）（11）輸出測量電壓250V</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">（3）倍率方次數(shù)值（12）輸出測量電壓100V</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">（4）R：電阻測量；Ω:電阻值單位（13）輸出測量電壓10V</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">（5）I：電流測量；A：電流值單位（14）校零指示</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">（6）B：電池測量；V：電壓值單位（15）量程錯誤指示，逆時針轉(zhuǎn)倍率開關(guān)</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">（7）輸出測量電壓1000V （16）量程錯誤指示，測量結(jié)果無效</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">（8）輸出測量電壓50V （17）讀數(shù)保持符號</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">（9）輸出測量電壓25V （18）電池電壓過低告警顯示 </span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">4.3 準(zhǔn)備</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <br> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <strong style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">4.4 絕緣電阻測量</span></span></strong> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">4.4.1 儀表與被測器件的連接</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <strong style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">在開始操作前, 儀表電源應(yīng)處于關(guān)閉位置, 在前一次測量結(jié)束后，應(yīng)經(jīng)過30秒左右的內(nèi)部放電時間, 以確保操作人員免受高壓電擊。</span></span></strong> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">4.4.1.1將被測器件的兩端分別與儀表的高壓輸出端與測量輸入端（黑線紅夾子）相連，保護(hù)環(huán)與屏蔽端（黑線黑夾子）相連，如被測器件無保護(hù)環(huán)則屏蔽端空置。</span></span><strong style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">注意：測量輸入端（黑線紅夾子）除了與被測器件連接外，必須完全懸空，與其他任何物體的接觸將會嚴(yán)重影響高阻測量的準(zhǔn)確性。</span></span></strong> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">4.4.1.2單芯電線絕緣電阻測量: 將被測電線放入恒溫水箱中（電線兩頭放在水箱外），儀表高壓輸出端通過金屬導(dǎo)體與水接通，測量輸入端（紅）與芯線相連，屏蔽端（黑）空置不用，見圖7。</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">4.4.1.3多芯及有金屬外套的電纜絕緣電阻測量：測量輸入端（紅）與被測芯線相連，將其它芯線與外套 ( 電纜屏蔽層 ) 連在一起后與儀表的高壓端連接，屏蔽端（黑）空置不用，見圖8。 </span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">4.4.1.4 防靜電工程表面電阻測量: 與防靜電工程電阻測量標(biāo)準(zhǔn)電極配套使用（選購件），將儀表的高壓輸出端與測量輸入端分別與兩個電極相連接（屏蔽端空置不用），剝?nèi)ル姌O下表面黑色導(dǎo)電膜上的保護(hù)膜(黃色)后，將兩個電極相隔一定距離置于被測物體表面（如測量防靜電地板，相隔距離一般為30cm），見圖9。</span></span><strong style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">注意：測量過程中不得接觸電極的金屬面，以免受到高壓電擊。</span></span></strong><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">注意保證導(dǎo)電膜表面清潔平整，測量完畢應(yīng)將保護(hù)膜貼上，然后放在光滑平整的表面上，如有臟污，切忌利器檫刮，可以用普通封箱膠帶在導(dǎo)電膜表面粘吸，將臟物粘去。</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;"> 如果被測物體的表面不是平面，則可用導(dǎo)電膠在被測物體表面的相應(yīng)位置涂上兩行平行的膠條，然后將儀表的高壓輸出端與測量輸入端分別與兩個導(dǎo)電膠條相連接（屏蔽端空置不用）。</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">4.4.2 打開電源開關(guān)。</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">4.4.3將倍率（量程）開關(guān)置于低檔位，儀表校零（見4.3.3節(jié)）。</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">ZC-90、 90A、90D、 90E、90F、90G的低倍率為×10</span></span><sup style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">5</span></span></sup><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">Ω，ZC-90B、 90C為×10</span></span><sup style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">4</span></span></sup><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">Ω，</span></span><strong style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">電阻測量必須從低量程開始，</span></span></strong><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">這是因為被測物體可能有很大的分布電容，由此導(dǎo)致的充電電流可能會在開始測量的瞬間對儀表高靈敏的輸入端造成危害。</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <img alt="" src="https://img55.chem17.com/9/20171022/636442587458454684437.png" style="margin:0px;padding:0px;max-height:100%;height:768px;width:783px;"> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">其中：</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">1. 儀表高壓輸出端 10. 被測單芯電纜</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">2. 儀表測量輸入端 11. 被測芯線</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">3. 屏蔽端夾子 (黑線黑夾子) 12. 其他芯線</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">4. 輸入端夾子 (黑線紅夾子) 13. 連接線</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">5. 高壓端夾子 (紅線紅夾子，90G為黑色屏蔽線) 14. 電纜屏蔽層（或金屬外套）</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">6. 連接線 15. 被測多芯電纜</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">7. 金屬導(dǎo)體 16. 防靜電工程電阻測量標(biāo)準(zhǔn)電極</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">8. 恒溫水浴箱 (圖中未包括恒溫部分) 17. 導(dǎo)電膜</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">9. 水 18. 被測材料</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">4.4.4 選擇合適的測量電壓</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;"> 測量電壓的選擇是由被測物體的特性以及測量本身的技術(shù)規(guī)范而確定的, 不同的測量電壓可能導(dǎo)致不同的測量結(jié)果，這是因為絕緣體的導(dǎo)電機(jī)理與金屬的導(dǎo)電機(jī)理有本質(zhì)上的不同，因此，除了特制的標(biāo)準(zhǔn)電阻外，一般的被測對象都有較高的負(fù)電壓系數(shù)，即測量電壓越高，電阻讀數(shù)越小。將高壓選擇開關(guān)撥至相應(yīng)的電壓檔位就可以獲得所需的測量電壓。</span></span><strong style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">注意：由于儀表內(nèi)部高壓電容的儲能較大，內(nèi)部放電時間要30秒左右，因此從一種測量電壓時改變?yōu)榱硪环N測量電壓時，功能開關(guān)必須先放在“放電調(diào)零”檔位，30秒后才能開始新選擇的電壓的測量，否則測量電壓可能大幅度高于額定值，損壞被測器件，在電壓未到達(dá)額定值之前，儀表讀數(shù)也不正確。</span></span></strong> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">4.4.5倍率（量程）選擇</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;"> （ZC-90，90A，90B，90C）將功能開關(guān)（16）由“調(diào)零”檔經(jīng)“放電”、“充電”檔撥至“測量”檔位, 測量電壓施加在被測對象上，電阻測量開始；</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;"> ZC-90（新版）、90D、90E，90F將將高壓（校零）選擇開關(guān)（15）由“放電校零”檔經(jīng)“充電”檔撥至所選的電壓檔位，測量電壓施加在被測對象上，電阻測量開始；</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;"> ZC-90G將“電池</span></span><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:"times new roman";">—</span></span><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">測量”選擇開關(guān)（20）撥至“測量”檔位，將 “電流</span></span><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:"times new roman";">—</span></span><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">電阻”選擇開關(guān)（21）撥至“電阻”檔位，此時顯示屏上出現(xiàn)“R（Ω）”字符，說明儀表進(jìn)入電阻測量狀態(tài)，將高壓（校零）選擇開關(guān)（15）由“000” （校零、放電）檔撥至所選的電壓檔位，測量電壓施加在被測對象上，電阻測量開始。</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;"> 注意觀察儀表示值，如顯示屏出現(xiàn)“1</span></span><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:"times new roman";">—</span></span><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">”（單獨一個“1”字后面沒讀數(shù)）說明儀表量程過小。逐步將倍率（量程）開關(guān)按順時針方向旋轉(zhuǎn)，當(dāng)儀表出現(xiàn)讀數(shù)后應(yīng)立即停止轉(zhuǎn)動。通常, </span></span><strong style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">儀表示值應(yīng)在100個字至1999個字之間（忽略小數(shù)點）</span></span></strong><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">，如果示值小于100個字，可以將倍率（量程）開關(guān)按逆時針方向旋轉(zhuǎn)一檔, 以求得的準(zhǔn)確度與分辨力。如顯示屏上出現(xiàn)“</span></span><strong style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">:</span></span></strong><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">”符號（ZC-90，90A，90B，90C）或“×”符號（ZC-90新、90D、90E、90F、90G）及報警蜂鳴聲（ZC-90G），說明儀表處于量程過大狀態(tài)，應(yīng)迅速將量程（倍率）開關(guān)逆時針方向旋轉(zhuǎn)，如在低倍率檔仍出現(xiàn)“ </span></span>: <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">”或“×”符號，說明被測器件短路，請速將開關(guān)撥至“校零”</span></span><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">“放電校零”或“.000”</span></span><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">檔位，斷開電阻測量回路。注意：</span></span><strong style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">出現(xiàn)</span></span></strong><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">“ </span></span>: <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">”</span></span><strong style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">或“×”符號時，儀表讀數(shù)無效。儀表輸入端受到過電流的沖擊，零位可能暫時偏移，通常放置一段時間可以恢復(fù)。</span></span></strong> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <strong style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">被測對象的絕緣電阻 = 儀表示值×倍率 </span></span></strong> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">4.4.6 被測器件放電</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">測量結(jié)束后，（ZC-90，90A，90B，90C）將功能開關(guān)（16）撥至“放電”或“校零”位置；（</span></span><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">ZC-90新、90D、</span></span><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">90E、90F、90G）將開關(guān)（15）撥至“.000”檔位，斷開測量電壓，并接通放電回路，經(jīng)過15</span></span><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:"times new roman";">—</span></span><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">20 秒，被測器件充分放電后，操作人員方可接觸高壓端與測量端。 </span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">4.4.7 電線電纜每公里長度絕緣電阻按下式換算 </span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <strong style="margin:0px;"><em style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">R</span></span></em></strong><strong style="margin:0px;"><em style="margin:0px;"><sub style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">L</span></span></sub></em></strong><strong style="margin:0px;"><em style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;"> = R</span></span></em></strong><strong style="margin:0px;"><em style="margin:0px;"><sub style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">X </span></span></sub></em></strong><strong style="margin:0px;"><em style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">L</span></span></em></strong> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">式中:</span></span><strong style="margin:0px;"><em style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;"> R</span></span></em></strong><strong style="margin:0px;"><em style="margin:0px;"><sub style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">L</span></span></sub></em></strong><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:"times new roman";">—</span></span><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">每公里長度絕緣電阻，MΩ</span></span><strong style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:"times new roman";">·</span></span></strong> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">km ; </span></span><strong style="margin:0px;"><em style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">R</span></span></em></strong><strong style="margin:0px;"><em style="margin:0px;"><sub style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">X</span></span></sub></em></strong><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:"times new roman";">—</span></span><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">試樣絕緣電阻，MΩ；</span></span><strong style="margin:0px;"><em style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">L</span></span></em></strong><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:"times new roman";">—</span></span><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">試樣長度，km</span></span> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">4.5 </span></span><strong style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">電阻測量各量程有效測量范圍及分辨力</span></span></strong> </p> <p style="margin-top:0px;margin-bottom:0px;padding:0px;color:#555555;font-family:Tahoma;font-size:14px;background-color:#FFFFFF;"> <strong style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">各量程范圍除了與倍率有關(guān)以外還與不同測量電壓時小數(shù)點的位置有關(guān)，</span></span></strong><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">如小數(shù)點在高位，測量范圍為（0.100-1.999）</span></span><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:"times new roman";">×</span></span><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">倍率，例：被測電阻在1.5</span></span><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:"times new roman";">×</span></span><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">10</span></span><sup style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">9</span></span></sup><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">Ω左右，倍率應(yīng)選10</span></span><sup style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">9</span></span></sup><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">Ω，電阻在3</span></span><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:"times new roman";">×</span></span><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">10</span></span><sup style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">9</span></span></sup><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">Ω，倍率應(yīng)選10</span></span><sup style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">10</span></span></sup><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">Ω，儀表示值為0.300</span></span><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:"times new roman";">×</span></span><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">10</span></span><sup style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">10</span></span></sup><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">Ω；如小數(shù)點在第2位，測量范圍為（1.00-19.99）</span></span><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:"times new roman";">×</span></span><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">倍率；如小數(shù)點在第3位，測量范圍為（10.0-199.9）</span></span><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:"times new roman";">×</span></span><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">倍率，例：被測電阻在1.5</span></span><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:"times new roman";">×</span></span><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">10</span></span><sup style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">9</span></span></sup><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">Ω，倍率可選10</span></span><sup style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">8</span></span></sup><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">Ω，儀表示值為15.0</span></span><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:"times new roman";">×</span></span><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">10</span></span><sup style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">8</span></span></sup><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">Ω，倍率也可選10</span></span><sup style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">8</span></span></sup><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">Ω，儀表示值為150.0</span></span><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:"times new roman";">×</span></span><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">10</span></span><sup style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">7</span></span></sup><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">Ω,分辨率更高；除了低量程外，儀表的其他量程并非從0開始，下列各表規(guī)定了各量程的有效測量范圍，及各測量電壓下的高分辨力, 注意：當(dāng)儀表讀數(shù)小于表中所列數(shù)值時，</span></span><strong style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">只要顯示屏上不出現(xiàn)</span></span></strong><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">“ </span></span>: <span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">”</span></span><strong style="margin:0px;"><span style="margin:0px;font-size:12pt;"><span style="margin:0px;font-family:幼圓;">或“×”符號，讀數(shù)仍然有效</span></span></strong> </p> </div> <div id="pr3mjyzo" class="datumrelate"> 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