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</table> </section><p><span style="font-size: 16px;"><strong>ZZ-3A<strong>變壓器直流電阻快速測(cè)試儀</strong></strong> 的詳細(xì)介紹</span></p><p><span style="font-size: 16px;">變壓器繞組的直流電阻測(cè)試是變壓器在交接、大修和改變分接開(kāi)關(guān)后，*的試驗(yàn)項(xiàng)目。通過(guò)測(cè)量變壓器繞組的直流電阻，可以檢查出引線(xiàn)的焊接或連接質(zhì)量，繞組有無(wú)匝間短路或開(kāi)路，以及分接開(kāi)關(guān)的接觸是否良好等情況。在以前對(duì)直阻的測(cè)量均采用QJ44雙臂電橋來(lái)測(cè)量，而這類(lèi)電橋的測(cè)量電流為毫安級(jí)，測(cè)量起來(lái)時(shí)間需要很長(zhǎng)，而且精度也較低。為了改變這種狀況，縮短測(cè)量時(shí)間以及減輕測(cè)試人員的工作負(fù)擔(dān)，本公司開(kāi)發(fā)了ZZ-3A直流電阻快速測(cè)試儀。</span></p><p><span style="font-size: 16px;">本產(chǎn)品是取代直流單、雙臂電橋的高精度換代產(chǎn)品。儀器采用了*的開(kāi)關(guān)電源技術(shù)，其測(cè)量速度比電橋快一百多倍，顯示部分由四位半LCD液晶顯示測(cè)量結(jié)果，三位半LCD液晶顯示環(huán)境溫度或測(cè)試電流值，克服了其它同類(lèi)產(chǎn)品由LED顯示值在陽(yáng)光下不便讀數(shù)的缺點(diǎn)，同時(shí)具備了自動(dòng)消弧功能。該直流電阻快速測(cè)試儀具有測(cè)速快、精度高、顯示直觀、抗干擾能力強(qiáng)、體積小、耗電省、測(cè)試數(shù)據(jù)穩(wěn)定可靠、不受人為因素影響等優(yōu)點(diǎn)。儀器內(nèi)裝可充電電池組(12V)，交直流兩用，便于現(xiàn)場(chǎng)及野外測(cè)試。</span></p><p><span style="font-size: 16px;"><strong>ZZ-3A變壓器直流電阻快速測(cè)試儀</strong>符合DLT 845.3-2004《電阻測(cè)量裝置通用技術(shù)條件第3部分直流電阻測(cè)試儀》的要求。</span></p><p><span style="font-size: 16px;"><strong>ZZ-3A變壓器直流電阻快速測(cè)試儀</strong>產(chǎn)品別稱(chēng)</span></p><p><span style="font-size: 16px;">直流電阻速測(cè)儀、變壓器直流電阻測(cè)試儀、變壓器直阻速測(cè)儀、變壓器直阻快速測(cè)試儀、感性負(fù)載直流電阻速測(cè)儀、感性負(fù)載直流電阻快速測(cè)試儀、感性負(fù)載直流電阻測(cè)試儀</span></p><p><span style="font-size: 16px;"><strong>ZZ-3A變壓器直流電阻快速測(cè)試儀</strong>產(chǎn)品特征</span></p><p><span style="font-size: 16px;">1、測(cè)試速度快：直流電阻快速測(cè)試儀</span></p><p><span style="font-size: 16px;"><span style="font-size: 16px; color: rgb(255, 0, 0);"> </span>大輸出充電電流可達(dá)2A，測(cè)量時(shí)能有效地補(bǔ)償大電感設(shè)備電流慣性，加速了鐵芯飽和，從而縮短了充電時(shí)間，提高了測(cè)試速度，比傳統(tǒng)儀器單、雙臂電橋快幾百倍。</span></p><p><br/></p><p><span style="font-size: 16px;">2、準(zhǔn)確度高：本儀器除了采用*的四端子測(cè)量法外，而且還采用*的恒流電源技術(shù)，使得對(duì)感性負(fù)載充電電流保持在一個(gè)相對(duì)的穩(wěn)定值，抗感能力穩(wěn)定，抗干擾能力強(qiáng)，進(jìn)而保證了測(cè)量準(zhǔn)確度。并且采用國(guó)外進(jìn)口優(yōu)質(zhì)元器件，測(cè)量結(jié)果準(zhǔn)確度高，重復(fù)性好。</span></p><p><br/></p><p><span style="font-size: 16px;">3、測(cè)量范圍廣：電阻測(cè)量范圍為1μΩ～2KΩ，量程廣。</span></p><p><br/></p><p><span style="font-size: 16px;">4、交直流兩用：本產(chǎn)品內(nèi)附可充電電池組，交直流供電，便攜式設(shè)計(jì)，使用、攜帶方便。</span></p><p><img alt="1 拷貝.jpg" src="https://img66.chem17.com/gxhpic_c8334a7b44/8e7f97e902a10da77a01b161254469b286114af0aa17be477251426920179d49e974738eb3d2d880.jpg" style="border:none; color:rgb(24, 24, 24); font:inherit; height:651px; margin:0px auto 15px; padding:0px; text-align:center; width:545px" title="1 拷貝.jpg"/></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><br/></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24);"><br/></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: 2em; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24); text-indent: 2em;"><span style="border:0px; font-family:宋體,simsun; font-size:inherit; font-stretch:inherit; font-style:inherit; font-variant:inherit; font-weight:inherit; line-height:inherit; margin:0px; padding:0px">1.電阻量程選擇鍵</span></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: 2em; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24); text-indent: 2em;"><span style="border:0px; font-family:宋體,simsun; font-size:inherit; font-stretch:inherit; font-style:inherit; font-variant:inherit; font-weight:inherit; line-height:inherit; margin:0px; padding:0px">2.電阻顯示</span></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: 2em; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24); text-indent: 2em;"><span style="border:0px; font-family:宋體,simsun; font-size:inherit; font-stretch:inherit; font-style:inherit; font-variant:inherit; font-weight:inherit; line-height:inherit; margin:0px; padding:0px">3.溫度/電流顯示</span></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: 2em; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24); text-indent: 2em;"><span style="border:0px; font-family:宋體,simsun; font-size:inherit; font-stretch:inherit; font-style:inherit; font-variant:inherit; font-weight:inherit; line-height:inherit; margin:0px; padding:0px">4.溫度傳感器</span></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: 2em; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24); text-indent: 2em;"><span style="border:0px; font-family:宋體,simsun; font-size:inherit; font-stretch:inherit; font-style:inherit; font-variant:inherit; font-weight:inherit; line-height:inherit; margin:0px; padding:0px">5.溫度/電流選擇</span></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: 2em; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24); text-indent: 2em;"><span style="border:0px; font-family:宋體,simsun; font-size:inherit; font-stretch:inherit; font-style:inherit; font-variant:inherit; font-weight:inherit; line-height:inherit; margin:0px; padding:0px">6.測(cè)試線(xiàn)插孔</span></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: 2em; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24); text-indent: 2em;"><span style="border:0px; font-family:宋體,simsun; font-size:inherit; font-stretch:inherit; font-style:inherit; font-variant:inherit; font-weight:inherit; line-height:inherit; margin:0px; padding:0px">7.工作狀態(tài)指示燈</span></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: 2em; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24); text-indent: 2em;"><span style="border:0px; font-family:宋體,simsun; font-size:inherit; font-stretch:inherit; font-style:inherit; font-variant:inherit; font-weight:inherit; line-height:inherit; margin:0px; padding:0px">8.啟停鍵</span></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: 2em; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24); text-indent: 2em;"><span style="border:0px; font-family:宋體,simsun; font-size:inherit; font-stretch:inherit; font-style:inherit; font-variant:inherit; font-weight:inherit; line-height:inherit; margin:0px; padding:0px">9.電源開(kāi)關(guān)</span></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: 2em; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24); text-indent: 2em;"><span style="border:0px; font-family:宋體,simsun; font-size:inherit; font-stretch:inherit; font-style:inherit; font-variant:inherit; font-weight:inherit; line-height:inherit; margin:0px; padding:0px">10.電源指示燈</span></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: 2em; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24); text-indent: 2em;"><span style="border:0px; font-family:宋體,simsun; font-size:inherit; font-stretch:inherit; font-style:inherit; font-variant:inherit; font-weight:inherit; line-height:inherit; margin:0px; padding:0px">11.220V電源插座</span></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: 2em; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24); text-indent: 2em;"><span style="border:0px; font-family:宋體,simsun; font-size:inherit; font-stretch:inherit; font-style:inherit; font-variant:inherit; font-weight:inherit; line-height:inherit; margin:0px; padding:0px">12.接地</span></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: 2em; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24); text-indent: 2em;"><span style="border:0px; font-family:宋體,simsun; font-size:inherit; font-stretch:inherit; font-style:inherit; font-variant:inherit; font-weight:inherit; line-height:inherit; margin:0px; padding:0px"><strong style="font-size: 16px; white-space: normal;">ZZ-3A變壓器直流電阻快速測(cè)試儀</strong>內(nèi)有一個(gè)能產(chǎn)生直流電流的恒流源。在測(cè)量電阻時(shí)，恒流從I＋、I－端向被試品饋入恒流，該電流在被測(cè)體上產(chǎn)生相應(yīng)的電壓值，這一電壓值在V＋、V－端取回本機(jī)，經(jīng)放大后，直接用四位半LCD數(shù)字顯示被試品的電阻值。</span></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: 2em; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24); text-indent: 2em;"><span style="border:0px; font-family:宋體,simsun; font-size:inherit; font-stretch:inherit; font-style:inherit; font-variant:inherit; font-weight:inherit; line-height:inherit; margin:0px; padding:0px">該儀器的使用方法：</span></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: 2em; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24); text-indent: 2em;"><span style="border:0px; font-family:宋體,simsun; font-size:inherit; font-stretch:inherit; font-style:inherit; font-variant:inherit; font-weight:inherit; line-height:inherit; margin:0px; padding:0px">1.電源</span></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: 2em; font-family: 微軟雅黑, Arial, 宋體; text-indent: 2em;"><span style="border:0px; font-family:宋體,simsun; font-size:inherit; font-stretch:inherit; font-style:inherit; font-variant:inherit; font-weight:inherit; line-height:inherit; margin:0px; padding:0px"><span style="color:#181818">本儀器有兩種供電方式：AC220V／DC14.8V。在強(qiáng)電磁場(chǎng)干擾的情況下，建議</span><span style="color:#ff0000"> </span><span style="color:#181818">使用直流電源測(cè)試，此狀態(tài)下測(cè)試的數(shù)值穩(wěn)定，抗工頻干擾能力強(qiáng)。</span></span></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: 2em; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24); text-indent: 2em;"><span style="border:0px; font-family:宋體,simsun; font-size:inherit; font-stretch:inherit; font-style:inherit; font-variant:inherit; font-weight:inherit; line-height:inherit; margin:0px; padding:0px">A、直流電源測(cè)試：</span></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: 2em; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24); text-indent: 2em;"><span style="border:0px; font-family:宋體,simsun; font-size:inherit; font-stretch:inherit; font-style:inherit; font-variant:inherit; font-weight:inherit; line-height:inherit; margin:0px; padding:0px">閉合電源開(kāi)關(guān)，電源指示燈亮，按下“啟停"鍵，即可選擇相應(yīng)電阻檔位開(kāi)關(guān)進(jìn)行測(cè)試。測(cè)試完畢后，按下“啟停"鍵，“放電"指示燈亮（若被試品儲(chǔ)存電量較小，則“放電"指示燈不亮），放電后，“放電"指示燈熄滅，再轉(zhuǎn)換測(cè)試夾，進(jìn)行再次測(cè)試。</span></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: 2em; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24); text-indent: 2em;"><span style="border:0px; font-family:宋體,simsun; font-size:inherit; font-stretch:inherit; font-style:inherit; font-variant:inherit; font-weight:inherit; line-height:inherit; margin:0px; padding:0px">B、交流電源測(cè)試：</span></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: 2em; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24); text-indent: 2em;"><span style="border:0px; font-family:宋體,simsun; font-size:inherit; font-stretch:inherit; font-style:inherit; font-variant:inherit; font-weight:inherit; line-height:inherit; margin:0px; padding:0px">接上交流AC220V電源，相應(yīng)指示燈（“充電"指示燈或者“充滿(mǎn)"指示燈）亮，閉合電源開(kāi)關(guān)，電源指示燈亮，按下“啟停"鍵，即可選擇相應(yīng)電阻檔位開(kāi)關(guān)進(jìn)行測(cè)試。測(cè)試完畢后，按下“啟停"鍵，“放電"指示燈亮（若被試品儲(chǔ)存電量較小，則“放電"指示燈不亮），放電后，“放電"指示燈熄滅，再轉(zhuǎn)換測(cè)試夾，進(jìn)行再次測(cè)試。</span></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: 2em; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24); text-indent: 2em;"><span style="border:0px; font-family:宋體,simsun; font-size:inherit; font-stretch:inherit; font-style:inherit; font-variant:inherit; font-weight:inherit; line-height:inherit; margin:0px; padding:0px">Ｃ、充電：</span></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: 2em; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24); text-indent: 2em;"><span style="border:0px; font-family:宋體,simsun; font-size:inherit; font-stretch:inherit; font-style:inherit; font-variant:inherit; font-weight:inherit; line-height:inherit; margin:0px; padding:0px">接上交流AC220V電源，此時(shí)“充電"指示燈亮，表示正在對(duì)儀器內(nèi)的充電電池進(jìn)行充電工作。若儀器內(nèi)的可充電電池電量較足，則“充滿(mǎn)"指示燈亮。儀器在使用交流電源測(cè)試的同時(shí)也在對(duì)機(jī)內(nèi)電池進(jìn)行充電。（儀器設(shè)計(jì)了充電保護(hù)電路，不會(huì)有過(guò)充現(xiàn)象產(chǎn)生）</span></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: 2em; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24); text-indent: 2em;"><span style="border:0px; font-family:宋體,simsun; font-size:inherit; font-stretch:inherit; font-style:inherit; font-variant:inherit; font-weight:inherit; line-height:inherit; margin:0px; padding:0px">2.測(cè)試線(xiàn)的聯(lián)接方法</span></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: 2em; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24); text-indent: 2em;"><span style="border:0px; font-family:宋體,simsun; font-size:inherit; font-stretch:inherit; font-style:inherit; font-variant:inherit; font-weight:inherit; line-height:inherit; margin:0px; padding:0px">將儀器的I＋、V＋、V－、I－端子與被試品按圖二的方法聯(lián)接好。這種聯(lián)接法，可消除接觸電阻以及聯(lián)線(xiàn)電阻對(duì)測(cè)量的影響。</span></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24); text-indent: 0em; text-align: center;"><span style="border:0px; font-family:宋體; font-size:19px; font-stretch:inherit; font-style:inherit; font-variant:inherit; font-weight:inherit; line-height:inherit; margin:0px; padding:0px"><img alt="2 拷貝.jpg" src="https://img66.chem17.com/gxhpic_c8334a7b44/8e7f97e902a10da77a01b161254469b267cd05ef1fcbbc2062a970d24faff3465ae6c99d9c68cf44.jpg" style="border:none; font:inherit; height:228px; margin:0px auto 15px; padding:0px; width:289px" title="2 拷貝.jpg"/></span></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24); text-align: center; text-indent: 37px;"><span style="border:0px; font-family:宋體; font-size:19px; font-stretch:inherit; font-style:inherit; font-variant:inherit; font-weight:inherit; line-height:inherit; margin:0px; padding:0px">圖二接線(xiàn)圖</span></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: 2em; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24); text-indent: 2em;"><span style="border:0px; font-family:宋體,simsun; font-size:inherit; font-stretch:inherit; font-style:inherit; font-variant:inherit; font-weight:inherit; line-height:inherit; margin:0px; padding:0px">在使用中，如果儀器隨帶的測(cè)試線(xiàn)長(zhǎng)度不夠，可使用直徑相當(dāng)?shù)膶?dǎo)線(xiàn)將測(cè)試線(xiàn)加長(zhǎng)。</span></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: 2em; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24); text-indent: 2em;"><span style="border:0px; font-family:宋體,simsun; font-size:inherit; font-stretch:inherit; font-style:inherit; font-variant:inherit; font-weight:inherit; line-height:inherit; margin:0px; padding:0px">3.測(cè)量</span></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: 2em; font-family: 微軟雅黑, Arial, 宋體; text-indent: 2em;"><span style="border:0px; font-family:宋體,simsun; font-size:inherit; font-stretch:inherit; font-style:inherit; font-variant:inherit; font-weight:inherit; line-height:inherit; margin:0px; padding:0px"><span style="color:#181818">按圖二接好測(cè)試線(xiàn)后，閉合電源開(kāi)關(guān)，電源指示燈亮，按下“啟停"鍵，此時(shí)表頭顯示“E0000"。根據(jù)被測(cè)值的大小選定電阻檔位量程，按下該檔開(kāi)關(guān)，此時(shí)該檔指示燈亮，四位半LCD顯示的穩(wěn)定值即為被測(cè)的電阻值，讀值時(shí)請(qǐng)注意所選量程上的單位（mΩ/Ω/kΩ）。在測(cè)量大電感試品如電力變壓器時(shí)，在測(cè)試回路以外的其它不需測(cè)量的線(xiàn)圈</span><span style="color:#ff0000"> </span><span style="color:#181818">將其短路，以免電磁干擾。</span></span></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: 2em; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24); text-indent: 2em;"><span style="border:0px; font-family:宋體,simsun; font-size:inherit; font-stretch:inherit; font-style:inherit; font-variant:inherit; font-weight:inherit; line-height:inherit; margin:0px; padding:0px">4.放電</span></p><p style="margin: 2px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 15px; line-height: 2em; font-family: 微軟雅黑, Arial, 宋體; color: rgb(24, 24, 24); text-indent: 2em;"><span style="border:0px; font-family:宋體,simsun; font-size:inherit; font-stretch:inherit; font-style:inherit; font-variant:inherit; font-weight:inherit; line-height:inherit; margin:0px; padding:0px">測(cè)試完畢后可直接關(guān)斷總電源。如果測(cè)試感性試品，關(guān)斷電源后不應(yīng)馬上拆線(xiàn)操作，應(yīng)讓儀器有續(xù)放電過(guò)程。一般放電至少20秒，否則電感的反電動(dòng)勢(shì)會(huì)危害人身安全。</span></p><p><br/></p><p><br/></p><p><br/></p><p><br/></p></div> <div id="ucuswco" class="tagContent" id="tagContent1" style="display: block;"><link 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