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id="5hlvxzllpl3" class="page-right"> <div id="5hlvxzllpl3" class="onurl"> <a href="/"><img src="/Skins/333987/images/home.png"></a><a href="/">網(wǎng)站首頁</a>><a href="/article.html">技術(shù)文章</a> > 高絕緣電阻測(cè)量?jī)x你了解使用方法嗎？</div> <div id="5hlvxzllpl3" class="page-news"> <div id="5hlvxzllpl3" class="newshowheader"> <h1 class="nd_title">高絕緣電阻測(cè)量?jī)x你了解使用方法嗎？</h1> <div id="5hlvxzllpl3" class="article-info"> <span> 瀏覽：</span> 1104<span id="5hlvxzllpl3" class="split">|</span> <span id="publishtime">更新時(shí)間：2023-11-02</span> <span id="5hlvxzllpl3" class="split">|</span> </div> </div> <div id="5hlvxzllpl3" class="page-newshow"> <p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(85, 85, 85); white-space: normal; background-color: rgb(255, 255, 255); font-family: 宋體, Tahoma, Arial;"><strong style="margin: 0px; font-family: 微軟雅黑; font-size: 16px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: 30px;"><strong style="margin: 0px;"></strong>高絕緣電阻測(cè)量?jī)x你了解使用方法嗎？</strong></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(85, 85, 85); white-space: normal; background-color: rgb(255, 255, 255); font-family: 宋體, Tahoma, Arial;"><a target="_blank"><strong style="margin: 0px; font-family: 微軟雅黑; font-size: 16px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: 30px;"><span style="margin: 0px; font-size: 12pt;"><span style="margin: 0px; font-family: 幼圓;">高絕緣絕緣電阻</span></span></strong></a><strong style="margin: 0px; font-family: 微軟雅黑; font-size: 16px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: 30px;"><span style="margin: 0px; font-size: 12pt;"><span style="margin: 0px; font-family: 幼圓;">測(cè)量</span></span></strong></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(85, 85, 85); white-space: normal; background-color: rgb(255, 255, 255); font-family: 宋體, Tahoma, Arial;"><span style="margin: 0px; font-size: 12pt;"><span style="margin: 0px; font-family: 幼圓;">4.4.1 儀表與被測(cè)器件的連接</span></span></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(85, 85, 85); white-space: normal; background-color: rgb(255, 255, 255); font-family: 宋體, Tahoma, Arial;"><strong style="margin: 0px; font-family: 微軟雅黑; font-size: 16px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: 30px;"><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(cè)量結(jié)束后，應(yīng)經(jīng)過30秒左右的內(nèi)部放電時(shí)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: rgb(85, 85, 85); white-space: normal; background-color: rgb(255, 255, 255); font-family: 宋體, Tahoma, Arial;"><span style="margin: 0px; font-size: 12pt;"><span style="margin: 0px; font-family: 幼圓;">4.4.1.1將被測(cè)器件的兩端分別與儀表的高壓輸出端與測(cè)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(cè)器件無保護(hù)環(huán)則屏蔽端空置。</span></span><strong style="margin: 0px; font-family: 微軟雅黑; font-size: 16px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: 30px;"><span style="margin: 0px; font-size: 12pt;"><span style="margin: 0px; font-family: 幼圓;">注意：測(cè)量輸入端（黑線紅夾子）除了與被測(cè)器件連接外，必須*懸空，與其他任何物體的接觸將會(huì)嚴(yán)重影響高阻測(cè)量的準(zhǔn)確性。</span></span></strong></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(85, 85, 85); white-space: normal; background-color: rgb(255, 255, 255); font-family: 宋體, Tahoma, Arial;"><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(cè)量: 將被測(cè)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(cè)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: rgb(85, 85, 85); white-space: normal; background-color: rgb(255, 255, 255); font-family: 宋體, Tahoma, Arial;"><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(cè)量：測(cè)量輸入端（紅）與被測(cè)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: rgb(85, 85, 85); white-space: normal; background-color: rgb(255, 255, 255); font-family: 宋體, Tahoma, Arial;"><span style="margin: 0px; font-size: 12pt;"><span style="margin: 0px; font-family: 幼圓;">4.4.1.4 <a target="_blank">防靜電工程表面電阻</a>測(cè)量: 與防靜電工程電阻測(cè)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(cè)量輸入端分別與兩個(gè)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(gè)電極相隔一定距離置于被測(cè)物體表面（如測(cè)量防靜電地板，相隔距離一般為30cm），見圖9。</span></span><strong style="margin: 0px; font-family: 微軟雅黑; font-size: 16px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: 30px;"><span style="margin: 0px; font-size: 12pt;"><span style="margin: 0px; font-family: 幼圓;">注意：測(cè)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(cè)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: rgb(85, 85, 85); white-space: normal; background-color: rgb(255, 255, 255); font-family: 宋體, Tahoma, Arial;"><span style="margin: 0px; font-size: 12pt;"><span style="margin: 0px; font-family: 幼圓;"> 如果被測(cè)物體的表面不是平面，則可用導(dǎo)電膠在被測(cè)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(cè)量輸入端分別與兩個(gè)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: rgb(85, 85, 85); white-space: normal; background-color: rgb(255, 255, 255); font-family: 宋體, Tahoma, Arial;"><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: rgb(85, 85, 85); white-space: normal; background-color: rgb(255, 255, 255); font-family: 宋體, Tahoma, Arial;"><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zui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: rgb(85, 85, 85); white-space: normal; background-color: rgb(255, 255, 255); font-family: 宋體, Tahoma, Arial;"><span style="margin: 0px; font-size: 12pt;"><span style="margin: 0px; font-family: 幼圓;">ZC-90、 90A、90D、 90E、90F、90G的zui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; font-family: 微軟雅黑; font-size: 16px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: 30px;"><span style="margin: 0px; font-size: 12pt;"><span style="margin: 0px; font-family: 幼圓;">電阻測(cè)量必須從zui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?yàn)楸粶y(cè)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(huì)在開始測(cè)量的瞬間對(duì)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: rgb(85, 85, 85); white-space: normal; background-color: rgb(255, 255, 255); font-family: 宋體, Tahoma, Arial;"><img alt="" src="https://img67.chem17.com/gxhpic_22d2937a21/c46eae72fd65783359fd69e37def752a3f032c81937897e2dcf1f05017153a4f074561b033734718.png" style="margin: 0px; padding: 0px; border: 0px; max-width: 100%; max-height: 100%; vertical-align: middle;"/></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(85, 85, 85); white-space: normal; background-color: rgb(255, 255, 255); font-family: 宋體, Tahoma, Arial;"><br style="margin: 0px;"/></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(85, 85, 85); white-space: normal; background-color: rgb(255, 255, 255); font-family: 宋體, Tahoma, Arial; text-align: center;"><span style="margin: 0px; font-size: 12pt;"><span style="margin: 0px; font-family: 幼圓;">圖9 防靜電工程表面電阻測(cè)量</span></span></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(85, 85, 85); white-space: normal; background-color: rgb(255, 255, 255); font-family: 宋體, Tahoma, Arial;"><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: rgb(85, 85, 85); white-space: normal; background-color: rgb(255, 255, 255); font-family: 宋體, Tahoma, Arial;"><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(cè)單芯電纜</span></span></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(85, 85, 85); white-space: normal; background-color: rgb(255, 255, 255); font-family: 宋體, Tahoma, Arial;"><span style="margin: 0px; font-size: 12pt;"><span style="margin: 0px; font-family: 幼圓;">2. 儀表測(cè)量輸入端 11. 被測(cè)芯線</span></span></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(85, 85, 85); white-space: normal; background-color: rgb(255, 255, 255); font-family: 宋體, Tahoma, Arial;"><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: rgb(85, 85, 85); white-space: normal; background-color: rgb(255, 255, 255); font-family: 宋體, Tahoma, Arial;"><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: rgb(85, 85, 85); white-space: normal; background-color: rgb(255, 255, 255); font-family: 宋體, Tahoma, Arial;"><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: rgb(85, 85, 85); white-space: normal; background-color: rgb(255, 255, 255); font-family: 宋體, Tahoma, Arial;"><span style="margin: 0px; font-size: 12pt;"><span style="margin: 0px; font-family: 幼圓;">6. 連接線 15. 被測(cè)多芯電纜</span></span></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(85, 85, 85); white-space: normal; background-color: rgb(255, 255, 255); font-family: 宋體, Tahoma, Arial;"><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(cè)量標(biāo)準(zhǔn)電極</span></span></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(85, 85, 85); white-space: normal; background-color: rgb(255, 255, 255); font-family: 宋體, Tahoma, Arial;"><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: rgb(85, 85, 85); white-space: normal; background-color: rgb(255, 255, 255); font-family: 宋體, Tahoma, Arial;"><span style="margin: 0px; font-size: 12pt;"><span style="margin: 0px; font-family: 幼圓;">9. 水 18. 被測(cè)材料</span></span></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(85, 85, 85); white-space: normal; background-color: rgb(255, 255, 255); font-family: 宋體, Tahoma, Arial;"><br style="margin: 0px;"/></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(85, 85, 85); white-space: normal; background-color: rgb(255, 255, 255); font-family: 宋體, Tahoma, Arial;"><br style="margin: 0px;"/></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(85, 85, 85); white-space: normal; background-color: rgb(255, 255, 255); font-family: 宋體, Tahoma, Arial;"><br style="margin: 0px;"/></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(85, 85, 85); white-space: normal; background-color: rgb(255, 255, 255); font-family: 宋體, Tahoma, Arial;"><span style="margin: 0px; font-size: 12pt;"><span style="margin: 0px; font-family: 幼圓;">4.4.4 選擇合適的測(cè)量電壓</span></span></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(85, 85, 85); white-space: normal; background-color: rgb(255, 255, 255); font-family: 宋體, Tahoma, Arial;"><span style="margin: 0px; font-size: 12pt;"><span style="margin: 0px; font-family: 幼圓;"> 測(cè)量電壓的選擇是由被測(cè)物體的特性以及測(cè)量本身的技術(shù)規(guī)范而確定的, 不同的測(cè)量電壓可能導(dǎo)致不同的測(cè)量結(jié)果，這是因?yàn)榻^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(cè)對(duì)象都有較高的負(fù)電壓系數(shù)，即測(cè)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(cè)量電壓。</span></span><strong style="margin: 0px; font-family: 微軟雅黑; font-size: 16px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: 30px;"><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(chǔ)能較大，內(nèi)部放電時(shí)間要30秒左右，因此從一種測(cè)量電壓時(shí)改變?yōu)榱硪环N測(cè)量電壓時(shí)，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(cè)量，否則測(cè)量電壓可能大幅度高于額定值，損壞被測(cè)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: rgb(85, 85, 85); white-space: normal; background-color: rgb(255, 255, 255); font-family: 宋體, Tahoma, Arial;"><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: rgb(85, 85, 85); white-space: normal; background-color: rgb(255, 255, 255); font-family: 宋體, Tahoma, Arial;"><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(cè)量"檔位, 測(cè)量電壓施加在被測(cè)對(duì)象上，電阻測(cè)量開始；</span></span></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(85, 85, 85); white-space: normal; background-color: rgb(255, 255, 255); font-family: 宋體, Tahoma, Arial;"><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(cè)量電壓施加在被測(cè)對(duì)象上，電阻測(cè)量開始；</span></span></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(85, 85, 85); white-space: normal; background-color: rgb(255, 255, 255); font-family: 宋體, Tahoma, Arial;"><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(cè)量"選擇開關(guān)（20）撥至“測(cè)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(shí)顯示屏上出現(xiàn)“R（Ω）"字符，說明儀表進(jìn)入電阻測(cè)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(cè)量電壓施加在被測(cè)對(duì)象上，電阻測(cè)量開始。</span></span></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(85, 85, 85); white-space: normal; background-color: rgb(255, 255, 255); font-family: 宋體, Tahoma, Arial;"><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*個(gè)“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(shí)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(dòng)。通常, </span></span><strong style="margin: 0px; font-family: 微軟雅黑; font-size: 16px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: 30px;"><span style="margin: 0px; font-size: 12pt;"><span style="margin: 0px; font-family: 幼圓;">儀表示值應(yīng)在100個(gè)字至1999個(gè)字之間（忽略小數(shù)點(diǎn)）</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(gè)字，可以將倍率（量程）開關(guān)按逆時(shí)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; font-family: 微軟雅黑; font-size: 16px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: 30px;"><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(hào)（ZC-90，90A，90B，90C）或“×"符號(hào)（ZC-90新、90D、90E、90F、90G）及報(bào)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(shí)針方向旋轉(zhuǎn)，如在zui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(hào)，說明被測(cè)器件短路，請(qǐng)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(cè)量回路。注意：</span></span><strong style="margin: 0px; font-family: 微軟雅黑; font-size: 16px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: 30px;"><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; font-family: 微軟雅黑; font-size: 16px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: 30px;"><span style="margin: 0px; font-size: 12pt;"><span style="margin: 0px; font-family: 幼圓;">或“×"符號(hào)時(shí)，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(shí)偏移，通常放置一段時(shí)間可以恢復(fù)。</span></span></strong></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(85, 85, 85); white-space: normal; background-color: rgb(255, 255, 255); font-family: 宋體, Tahoma, Arial;"><strong style="margin: 0px; font-family: 微軟雅黑; font-size: 16px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: 30px;"><span style="margin: 0px; font-size: 12pt;"><span style="margin: 0px; font-family: 幼圓;">被測(cè)對(duì)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: rgb(85, 85, 85); white-space: normal; background-color: rgb(255, 255, 255); font-family: 宋體, Tahoma, Arial;"><span style="margin: 0px; font-size: 12pt;"><span style="margin: 0px; font-family: 幼圓;">4.4.6 被測(cè)器件放電</span></span></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(85, 85, 85); white-space: normal; background-color: rgb(255, 255, 255); font-family: 宋體, Tahoma, Arial;"><span style="margin: 0px; font-size: 12pt;"><span style="margin: 0px; font-family: 幼圓;">測(cè)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(cè)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(cè)器件充分放電后，操作人員方可接觸高壓端與測(cè)量端。 </span></span></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(85, 85, 85); white-space: normal; background-color: rgb(255, 255, 255); font-family: 宋體, Tahoma, Arial;"><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(zhǎng)度絕緣電阻按下式換算 </span></span></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(85, 85, 85); white-space: normal; background-color: rgb(255, 255, 255); font-family: 宋體, Tahoma, Arial;"><strong style="margin: 0px; font-family: 微軟雅黑; font-size: 16px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: 30px;"><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; font-family: 微軟雅黑; font-size: 16px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: 30px;"><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; font-family: 微軟雅黑; font-size: 16px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: 30px;"><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; font-family: 微軟雅黑; font-size: 16px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: 30px;"><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; font-family: 微軟雅黑; font-size: 16px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: 30px;"><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: rgb(85, 85, 85); white-space: normal; background-color: rgb(255, 255, 255); font-family: 宋體, Tahoma, Arial;"><span style="margin: 0px; font-size: 12pt;"><span style="margin: 0px; font-family: 幼圓;">式中:</span></span><strong style="margin: 0px; font-family: 微軟雅黑; font-size: 16px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: 30px;"><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; font-family: 微軟雅黑; font-size: 16px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: 30px;"><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(zhǎng)度絕緣電阻，MΩ</span></span><strong style="margin: 0px; font-family: 微軟雅黑; font-size: 16px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: 30px;"><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; font-family: 微軟雅黑; font-size: 16px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: 30px;"><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; font-family: 微軟雅黑; font-size: 16px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: 30px;"><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; font-family: 微軟雅黑; font-size: 16px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: 30px;"><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(zhǎng)度，km</span></span></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(85, 85, 85); white-space: normal; background-color: rgb(255, 255, 255); font-family: 宋體, Tahoma, Arial;"><span style="margin: 0px; font-size: 12pt;"><span style="margin: 0px; font-family: 幼圓;">4.5 </span></span><strong style="margin: 0px; font-family: 微軟雅黑; font-size: 16px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: 30px;"><span style="margin: 0px; font-size: 12pt;"><span style="margin: 0px; font-family: 幼圓;">電阻測(cè)量各量程有效測(cè)量范圍及zui高分辨力</span></span></strong></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(85, 85, 85); white-space: normal; background-color: rgb(255, 255, 255); font-family: 宋體, Tahoma, Arial;"><strong style="margin: 0px; font-family: 微軟雅黑; font-size: 16px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: 30px;"><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(cè)量電壓時(shí)小數(shù)點(diǎn)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(diǎn)在zui高位，*測(cè)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(cè)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(diǎn)在第2位，*測(cè)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(diǎn)在第3位，*測(cè)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(cè)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zui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(cè)量范圍，及各測(cè)量電壓下的zui高分辨力, 注意：當(dāng)儀表讀數(shù)小于表中所列數(shù)值時(shí)，</span></span><strong style="margin: 0px; font-family: 微軟雅黑; font-size: 16px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: 30px;"><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; font-family: 微軟雅黑; font-size: 16px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: 30px;"><span style="margin: 0px; font-size: 12pt;"><span style="margin: 0px; font-family: 幼圓;">或“×"符號(hào)，讀數(shù)仍然有效</span></span></strong><span style="margin: 0px; font-size: 12pt;"><span style="margin: 0px; font-family: 幼圓;">。</span></span></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; white-space: normal; background-color: rgb(255, 255, 255); text-align: center;"><img src="https://img80.chem17.com/gxhpic_22d2937a21/f581b2b3aa2728029289c048e9a579d5468a81daf6d0111a8e3105783ef478783fe4a16913b65b34.jpg" style="width:800px;"/></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; 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