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style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none"><strong style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; outline:0px; text-size-adjust:none"> ETCR2000接地電阻測(cè)試儀在各種接地系統(tǒng)的應(yīng)用。</strong></span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none">一般情況下，我們將接地系統(tǒng)分為三種：多點(diǎn)接地系統(tǒng)、有限點(diǎn)接地系統(tǒng)、單點(diǎn)接地系統(tǒng)。下面介紹ETCR2000</span><span style="font-size:16px"><span style="color:#FF0000"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; outline:0px; text-size-adjust:none"><font face="微軟雅黑"><strong>鉗型接地電阻測(cè)試儀</strong></font></span></span></span><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none">在這三種種接地系統(tǒng)的應(yīng)用</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 0em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none"><strong style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; outline:0px; text-size-adjust:none"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; font-family:微軟雅黑,sans-serif; outline:0px; text-size-adjust:none">1</span></strong><strong style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; outline:0px; text-size-adjust:none"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; font-family:微軟雅黑,sans-serif; outline:0px; text-size-adjust:none">）多點(diǎn)接地系統(tǒng)的應(yīng)用</span></strong></span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none">多點(diǎn)接地系統(tǒng)（例如輸電系統(tǒng)桿塔接地、通信電纜接地系統(tǒng)、某些建筑物等），它們通過架空地線（通信電纜的屏蔽層）連接，組成了多點(diǎn)接地系統(tǒng)。見下圖。當(dāng)用鉗表測(cè)量時(shí)，其等效電路如下：</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><img alt="ETCR2000系列鉗形接地電阻儀現(xiàn)場(chǎng)應(yīng)用" border="0" src="https://0.rc.xiniu.com/g2/M00/B6/F0/CgAGfFtW4EGAc2_eAACDiwEqJ2E196.png" style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); border:0px none; box-sizing:border-box; height:auto; max-width:100%; outline:0px; text-size-adjust:none; vertical-align:top; width:400px" title="ETCR2000系列鉗形接地電阻儀現(xiàn)場(chǎng)應(yīng)用" /><img alt="ETCR2000系列鉗形接地電阻儀現(xiàn)場(chǎng)應(yīng)用" border="0" src="https://0.rc.xiniu.com/g2/M00/B6/F0/CgAGfFtW4EKAQebXAABMAwZRwYA879.png" style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); border:0px none; box-sizing:border-box; height:auto; max-width:100%; outline:0px; text-size-adjust:none; vertical-align:top; width:340px" title="ETCR2000系列鉗形接地電阻儀現(xiàn)場(chǎng)應(yīng)用" /></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none">其中：R<span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; font-size:12px; line-height:0; outline:0px; position:relative; text-size-adjust:none; vertical-align:baseline">1</span>為待測(cè)的接地電阻。</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none">R<span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; font-size:12px; line-height:0; outline:0px; position:relative; text-size-adjust:none; vertical-align:baseline">0</span>為所有其它桿塔的接地電阻并聯(lián)后的等效電阻。</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none">由于接地點(diǎn)數(shù)量很多，從工程角度設(shè)定R<span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; font-size:12px; line-height:0; outline:0px; position:relative; text-size-adjust:none; vertical-align:baseline">0</span>=0。這樣，我們所測(cè)的電阻就應(yīng)該是R<span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; font-size:12px; line-height:0; outline:0px; position:relative; text-size-adjust:none; vertical-align:baseline">1</span>了。多次不同環(huán)境、不同場(chǎng)合下與傳統(tǒng)方法進(jìn)行對(duì)比試驗(yàn)，證明上述設(shè)定是*正確的。</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none">對(duì)于多點(diǎn)接地系統(tǒng)，無需斷開接地引線，無需輔助地極，只需用ETCR2000+鉗表鉗住接地引線即可測(cè)出阻值。</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none"><strong style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; outline:0px; text-size-adjust:none">2） </strong></span><span style="color:#FF0000"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; font-size:16px; outline:0px; text-size-adjust:none"><strong style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; outline:0px; text-size-adjust:none">鉗型接地電阻測(cè)試儀</strong></span></span><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none"><strong style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; outline:0px; text-size-adjust:none">有限點(diǎn)接地系統(tǒng)的應(yīng)用</strong></span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none">有些桿塔接地系統(tǒng)是由數(shù)個(gè)桿塔通過架空地線彼此相連；某些建筑物的接地也不是一個(gè)獨(dú)立的接地網(wǎng)，而是幾個(gè)接地體通過導(dǎo)線彼此連接。這種3個(gè)以上10個(gè)以下的接地系統(tǒng)我們稱為有限點(diǎn)接地系統(tǒng)。</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none">這種情況也較普遍。在這種情況下，如果將上圖中的R0視為0則會(huì)對(duì)測(cè)量結(jié)果帶來較大誤差?？梢酝ㄟ^一組非線性方程組把阻值解算出來，但是人工解算它是十分困難的。為此，我公司提供了“有限點(diǎn)接地系統(tǒng)解算程序軟件”，用戶可在PC機(jī)上進(jìn)行機(jī)解。</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-align: center; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none"><strong style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; outline:0px; text-size-adjust:none"><img src='https://0.rc.xiniu.com/g2/M00/B6/F1/CgAGfFtW4VKASxT0AAE9Y-HzKBI512.jpg' style='width:800px;'></strong></span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none"><strong style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; outline:0px; text-size-adjust:none">3）單點(diǎn)接地系統(tǒng)的應(yīng)用</strong></span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none">從測(cè)試原理來說，ETCR2000</span><strong><span style="color:#FF0000"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none">鉗型接地電阻測(cè)試儀</span></span></strong><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none">只能測(cè)量回路電阻，對(duì)單點(diǎn)接地是測(cè)不出來的。但是，用戶*可以利用一根測(cè)試線及接地系統(tǒng)附近的接地極，人為地制造一個(gè)回路進(jìn)行測(cè)試。下面介紹二種用鉗表測(cè)量單點(diǎn)接地的方法，此方法可應(yīng)用于傳統(tǒng)的數(shù)字式接地電阻表無法測(cè)試的場(chǎng)合。例如地下室內(nèi)或樓層上的機(jī)房、避雷針、電梯、加油站、被混凝土覆蓋的接地體、以及無法從系統(tǒng)中分離的接地體等等，使用數(shù)字式接地電阻表測(cè)量接地電阻是非常困難的，但ETCR2000鉗表利用輔助地極和一根測(cè)試線就可以測(cè)算出它們的接地電阻。</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 0em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none"><strong style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; outline:0px; text-size-adjust:none"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; font-family:微軟雅黑,sans-serif; outline:0px; text-size-adjust:none">（</span></strong><strong style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; outline:0px; text-size-adjust:none"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; font-family:微軟雅黑,sans-serif; outline:0px; text-size-adjust:none">a</span></strong><strong style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; outline:0px; text-size-adjust:none"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; font-family:微軟雅黑,sans-serif; outline:0px; text-size-adjust:none">）．</span></strong><strong style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; outline:0px; text-size-adjust:none"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; font-family:微軟雅黑,sans-serif; outline:0px; text-size-adjust:none">二點(diǎn)法</span></strong></span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none">見下圖，在被測(cè)接地體RA附近找一個(gè)獨(dú)立的接地較好的接地體RB（例如臨近的自來水管、建筑物等）。將RA和RB用一根測(cè)試線連接起來。</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 24px; line-height: 2em;"><img alt="ETCR2000系列鉗形接地電阻儀現(xiàn)場(chǎng)應(yīng)用" border="0" src="https://0.rc.xiniu.com/g2/M00/AB/D0/CgAGe1tW4R6ARGVDAAB-dY1NmF0340.png" style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); border:0px none; box-sizing:border-box; height:auto; max-width:100%; outline:0px; text-size-adjust:none; vertical-align:top; width:573px" title="ETCR2000系列鉗形接地電阻儀現(xiàn)場(chǎng)應(yīng)用" /></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none">由于鉗表所測(cè)的阻值是兩個(gè)接地電阻和測(cè)試線阻值的串聯(lián)值：RT=RA+RB+RL</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none">其中：RT為鉗表所測(cè)的阻值。</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none">RL為測(cè)試線的阻值。</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none">將測(cè)試線頭尾相連即可用鉗表測(cè)出其阻值RL。</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none">所以，如果鉗表的測(cè)量值小于接地電阻的允許值，那么這兩個(gè)接地體的接地電阻都是合格的。如果輔助地極接地良好（如消防栓、建筑物大地網(wǎng)等），由于輔助地極的接地電阻很小，所以被測(cè)地極的接地電阻近似于鉗表所測(cè)的阻值。</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 0em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none"><strong style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; outline:0px; text-size-adjust:none"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; font-family:微軟雅黑,sans-serif; outline:0px; text-size-adjust:none">（</span></strong><strong style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; outline:0px; text-size-adjust:none"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; font-family:微軟雅黑,sans-serif; outline:0px; text-size-adjust:none">b</span></strong><strong style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; outline:0px; text-size-adjust:none"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; font-family:微軟雅黑,sans-serif; outline:0px; text-size-adjust:none">）．</span></strong><strong style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; outline:0px; text-size-adjust:none"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; font-family:微軟雅黑,sans-serif; outline:0px; text-size-adjust:none">三點(diǎn)法</span></strong></span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none">三點(diǎn)法可以準(zhǔn)確測(cè)算出接地極的阻值。如下圖，在被測(cè)接地體RA附近找二個(gè)獨(dú)立的接地體RB和RC。</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none">di一步，將RA和RB用一根測(cè)試線連接起來，見下圖。用鉗表讀得di一個(gè)數(shù)據(jù)R1。</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none"><img alt="ETCR2000系列鉗形接地電阻儀現(xiàn)場(chǎng)應(yīng)用" border="0" src="https://0.rc.xiniu.com/g2/M00/AB/D4/CgAGe1tW4_eAFZH5AABydVa5mp0909.png" style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); border:0px none; box-sizing:border-box; height:auto; max-width:100%; outline:0px; text-size-adjust:none; vertical-align:top; width:398px" title="ETCR2000系列鉗形接地電阻儀現(xiàn)場(chǎng)應(yīng)用" /></span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none">第二步，將RB和RC連接起來，見下圖。用鉗表讀得第二個(gè)數(shù)據(jù)R2。</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none"> </span><img alt="ETCR2000系列鉗形接地電阻儀現(xiàn)場(chǎng)應(yīng)用" border="0" src="https://0.rc.xiniu.com/g2/M00/AB/D5/CgAGe1tW5FGAFNqcAAB0ab3DK54104.png" style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); border:0px none; box-sizing:border-box; height:auto; max-width:100%; outline:0px; text-size-adjust:none; vertical-align:top; width:397px" title="ETCR2000系列鉗形接地電阻儀現(xiàn)場(chǎng)應(yīng)用" /></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none">第三步，將RC和RA連接起來，見下圖。用鉗表讀得第三個(gè)數(shù)據(jù)R3。</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><img alt="ETCR2000系列鉗形接地電阻儀現(xiàn)場(chǎng)應(yīng)用" border="0" src="https://0.rc.xiniu.com/g2/M00/AB/D5/CgAGe1tW5HOAB3sFAABtzXYYdIk075.png" style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); border:0px none; box-sizing:border-box; height:auto; max-width:100%; outline:0px; text-size-adjust:none; vertical-align:top; width:399px" title="ETCR2000系列鉗形接地電阻儀現(xiàn)場(chǎng)應(yīng)用" /></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none">上面三步中，每一步所測(cè)得的讀數(shù)都是兩個(gè)接地電阻的串聯(lián)值。這樣，就可以很容易地計(jì)算出每一個(gè)接地電阻值：</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none">由于： R1=RA+RB R2=RB+RC R3=RC+RA</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none">所以： RA=（R1+R3-R2）÷2</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none">這就是接地體RA的接地電阻值。為了便于記憶上述公式，可將三個(gè)接地體看作一個(gè)三角形，則被測(cè)電阻等于鄰邊電阻相加減對(duì)邊電阻除以2。</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none">其它兩個(gè)作為參照物的接地體的接地電阻值為：</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none">RB=R1-RA RC=R3-RA</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"> </p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none"><strong style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; outline:0px; text-size-adjust:none">7. 電力系統(tǒng)的應(yīng)用</strong></span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none"><strong style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; outline:0px; text-size-adjust:none">(1) 輸電線桿塔接地電阻的測(cè)量：</strong></span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none">通常輸電線路桿塔接地構(gòu)成多點(diǎn)接地系統(tǒng)，只需用ETCR鉗表鉗住接地引下線，即可測(cè)出該支路的接地電阻阻值。（請(qǐng)見下圖）</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none"> </span><img alt="ETCR2000系列鉗形接地電阻儀現(xiàn)場(chǎng)應(yīng)用" border="0" src="https://0.rc.xiniu.com/g2/M00/AB/D5/CgAGe1tW5aaADNysAABMY41dKeM113.png" style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); border:0px none; box-sizing:border-box; height:auto; max-width:100%; outline:0px; text-size-adjust:none; vertical-align:top; width:560px" title="ETCR2000系列鉗形接地電阻儀現(xiàn)場(chǎng)應(yīng)用" /></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none">注：測(cè)試時(shí)如鉗表顯示“L 0.01Ω”，說明同一個(gè)桿塔有兩根接地引下線并在地下連接，測(cè)試時(shí)應(yīng)將另一根引線解扣。</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none"><strong style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; outline:0px; text-size-adjust:none">(2) 變壓器中性點(diǎn)接地電阻的測(cè)量</strong></span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none">變壓器中性點(diǎn)接地有二種情形：如有重復(fù)接地則構(gòu)成多點(diǎn)接地系統(tǒng)；如無重復(fù)接地按單點(diǎn)接地測(cè)量。</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none"><strong style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; outline:0px; text-size-adjust:none">(3) 發(fā)電廠變電所的應(yīng)用</strong></span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none">ETCR2000鉗表可以測(cè)試回路的接觸情況和連接情況。借助一根測(cè)試線，可以測(cè)量站內(nèi)裝置與地網(wǎng)的連接情況。接地電阻可按單點(diǎn)接地測(cè)量。</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"> </p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none"><strong style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; outline:0px; text-size-adjust:none">8. 電信系統(tǒng)的應(yīng)用</strong></span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none"><strong style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; outline:0px; text-size-adjust:none">（1）樓層機(jī)房接地電阻的測(cè)量</strong></span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none">電信系統(tǒng)的機(jī)房往往設(shè)在樓房的上層，使用搖表測(cè)量非常困難。而用ETCR2000鉗表測(cè)試則非常方便，用一根測(cè)試線連接消防栓和被測(cè)接地極（機(jī)房?jī)?nèi)都設(shè)有消防栓），然后用鉗表測(cè)量測(cè)試線。</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none">鉗表阻值 = 機(jī)房接地電阻 + 測(cè)試線阻值 + 消防栓接地電阻</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none">如果消防栓接地電阻很小，則：</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none">機(jī)房接地電阻 ≈ 鉗表阻值 - 測(cè)試線阻值</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 0em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none"><strong style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; outline:0px; text-size-adjust:none"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; font-family:微軟雅黑,sans-serif; outline:0px; text-size-adjust:none">（2）機(jī)房、發(fā)射塔接地電阻的測(cè)量</span></strong></span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none">機(jī)房、發(fā)射塔接地通常構(gòu)成二點(diǎn)接地系統(tǒng)，如下圖。</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none"><img alt="ETCR2000系列鉗形接地電阻儀現(xiàn)場(chǎng)應(yīng)用" border="0" src="https://0.rc.xiniu.com/g2/M00/AB/D5/CgAGe1tW5qqAXVvBAABQN96jSuE981.png" style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); border:0px none; box-sizing:border-box; height:auto; max-width:100%; outline:0px; text-size-adjust:none; vertical-align:top; width:390px" title="ETCR2000系列鉗形接地電阻儀現(xiàn)場(chǎng)應(yīng)用" /></span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none">如果鉗表的測(cè)量值小于接地電阻的允許值，那么機(jī)房、發(fā)射塔的接地電阻都是合格的。如果鉗表的測(cè)量值大于允許值，請(qǐng)按單點(diǎn)接地進(jìn)行測(cè)量。</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"> </p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none"><strong style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; outline:0px; text-size-adjust:none">9. 建筑物接地系統(tǒng)的應(yīng)用</strong></span></p><p style="box-sizing: border-box; margin: 0px 0px 0px 28px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 0em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none">如果建筑物的各接地極是獨(dú)立的，各接地極的接地電阻測(cè)量請(qǐng)見下圖。</span></p><p style="box-sizing: border-box; margin: 0px 0px 0px 28px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 0em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none"><img alt="ETCR2000系列鉗形接地電阻儀現(xiàn)場(chǎng)應(yīng)用" border="0" src="https://0.rc.xiniu.com/g2/M00/AB/D8/CgAGe1tW6JeAR8AVAABZh-CXr_A269.png" style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); border:0px none; box-sizing:border-box; height:auto; max-width:100%; outline:0px; text-size-adjust:none; vertical-align:top; width:401px" title="ETCR2000系列鉗形接地電阻儀現(xiàn)場(chǎng)應(yīng)用" /></span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none">如果建筑物的各接地極在地下是連接的，測(cè)量的是金屬回路的阻值。接地電阻測(cè)量請(qǐng)參考單點(diǎn)接地的測(cè)量。</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"> </p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none"><strong style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; outline:0px; text-size-adjust:none">10. ETCR2000B+防爆型鉗形接地電阻儀在加油站接地系統(tǒng)的應(yīng)用</strong></span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none">根據(jù)JJF2-2003《接地式防靜電裝置檢測(cè)規(guī)范》，加油站主要需測(cè)試如下設(shè)施的接地電阻及連接電阻。測(cè)試時(shí)使用的儀器必須滿足GB3836-2000《爆炸性氣體環(huán)境用電氣設(shè)備》的要求。</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 0em; line-height: 2em;"> </p><table border="1" cellpadding="0" cellspacing="0" class="ueditorTableStyle" style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); border-collapse:collapse; border-spacing:0px; box-sizing:border-box; color:rgb(136, 136, 136); empty-cells:show; font-family:微軟雅黑; font-size:14px; margin:0px 0px 10px; max-width:100%; outline:0px; padding:0px; text-size-adjust:none; width:848px"><tbody style="box-sizing: border-box; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);"><tr style="box-sizing: border-box; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);"><td height="36" style="box-sizing: border-box; padding: 5px 10px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; border: 1px solid rgb(221, 221, 221);" width="283"><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none">序號(hào)</span></p></td><td style="box-sizing: border-box; padding: 5px 10px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; border-top: 1px solid rgb(221, 221, 221); border-right: 1px solid rgb(221, 221, 221); border-bottom: 1px solid rgb(221, 221, 221); border-left: none; border-image: initial;" width="283"><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none">檢測(cè)項(xiàng)目</span></p></td><td style="box-sizing: border-box; padding: 5px 10px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; border-top: 1px solid rgb(221, 221, 221); border-right: 1px solid rgb(221, 221, 221); border-bottom: 1px solid rgb(221, 221, 221); border-left: none; border-image: initial;" width="283"><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none">技術(shù)要求</span></p></td></tr><tr style="box-sizing: border-box; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);"><td height="36" style="box-sizing: border-box; padding: 5px 10px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; border-top: none; border-right: 1px solid rgb(221, 221, 221); border-bottom: 1px solid rgb(221, 221, 221); border-left: 1px solid rgb(221, 221, 221); border-image: initial;" width="283"><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none">1</span></p></td><td style="box-sizing: border-box; padding: 5px 10px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; border-top: none; border-right: 1px solid rgb(221, 221, 221); border-bottom: 1px solid rgb(221, 221, 221); border-left: none; border-image: initial;" width="283"><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none">儲(chǔ)油罐接地電阻</span></p></td><td style="box-sizing: border-box; padding: 5px 10px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; border-top: none; border-right: 1px solid rgb(221, 221, 221); border-bottom: 1px solid rgb(221, 221, 221); border-left: none; border-image: initial;" width="283"><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none">≤10Ω</span></p></td></tr><tr style="box-sizing: border-box; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);"><td height="36" style="box-sizing: border-box; padding: 5px 10px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; border-top: none; border-right: 1px solid rgb(221, 221, 221); border-bottom: 1px solid rgb(221, 221, 221); border-left: 1px solid rgb(221, 221, 221); border-image: initial;" width="283"><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none">2</span></p></td><td style="box-sizing: border-box; padding: 5px 10px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; border-top: none; border-right: 1px solid rgb(221, 221, 221); border-bottom: 1px solid rgb(221, 221, 221); border-left: none; border-image: initial;" width="283"><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none">裝卸點(diǎn)接地電阻</span></p></td><td style="box-sizing: border-box; padding: 5px 10px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; border-top: none; border-right: 1px solid rgb(221, 221, 221); border-bottom: 1px solid rgb(221, 221, 221); border-left: none; border-image: initial;" width="283"><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none">≤10Ω</span></p></td></tr><tr style="box-sizing: border-box; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);"><td height="36" style="box-sizing: border-box; padding: 5px 10px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; border-top: none; border-right: 1px solid rgb(221, 221, 221); border-bottom: 1px solid rgb(221, 221, 221); border-left: 1px solid rgb(221, 221, 221); border-image: initial;" width="283"><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none">3</span></p></td><td style="box-sizing: border-box; padding: 5px 10px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; border-top: none; border-right: 1px solid rgb(221, 221, 221); border-bottom: 1px solid rgb(221, 221, 221); border-left: none; border-image: initial;" width="283"><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none">加油機(jī)接地電阻</span></p></td><td style="box-sizing: border-box; padding: 5px 10px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; border-top: none; border-right: 1px solid rgb(221, 221, 221); border-bottom: 1px solid rgb(221, 221, 221); border-left: none; border-image: initial;" width="283"><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none">≤4Ω</span></p></td></tr><tr style="box-sizing: border-box; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);"><td height="36" style="box-sizing: border-box; padding: 5px 10px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; border-top: none; border-right: 1px solid rgb(221, 221, 221); border-bottom: 1px solid rgb(221, 221, 221); border-left: 1px solid rgb(221, 221, 221); border-image: initial;" width="283"><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none">4</span></p></td><td style="box-sizing: border-box; padding: 5px 10px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; border-top: none; border-right: 1px solid rgb(221, 221, 221); border-bottom: 1px solid rgb(221, 221, 221); border-left: none; border-image: initial;" width="283"><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none">加油機(jī)輸油軟管連接電阻</span></p></td><td style="box-sizing: border-box; padding: 5px 10px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; border-top: none; border-right: 1px solid rgb(221, 221, 221); border-bottom: 1px solid rgb(221, 221, 221); border-left: none; border-image: initial;" width="283"><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none">≤5Ω</span></p></td></tr></tbody></table><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none">ETCR2000B+鉗表已通過防爆認(rèn)證。其防爆標(biāo)志為ExiaⅡBT3 Ga。防爆合格證號(hào)：CE13.2263。它可應(yīng)用于相應(yīng)的易燃易爆環(huán)境中。下面簡(jiǎn)述ETCR2000B防爆型鉗形接地電阻儀在加油站接地系統(tǒng)的應(yīng)用。</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none"><strong style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; outline:0px; text-size-adjust:none">(1) 儲(chǔ)油罐、裝卸點(diǎn)接地電阻的測(cè)量：</strong></span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none"><strong style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; outline:0px; text-size-adjust:none"><img alt="ETCR2000系列鉗形接地電阻儀現(xiàn)場(chǎng)應(yīng)用" border="0" src="https://0.rc.xiniu.com/g2/M00/AB/D9/CgAGe1tW6mKAZpnVAAC4KJh_8B0826.png" style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); border:0px none; box-sizing:border-box; height:auto; max-width:100%; outline:0px; text-size-adjust:none; vertical-align:top; width:339px" title="ETCR2000系列鉗形接地電阻儀現(xiàn)場(chǎng)應(yīng)用" /></strong></span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none">如上圖，在加油站接地系統(tǒng)中，儲(chǔ)油罐接地極A與加油機(jī)相連接，裝卸點(diǎn)接地極C是一個(gè)獨(dú)立的接地極。再找一個(gè)獨(dú)立的接地極作為輔助接地極B（如消防栓等），按三點(diǎn)法用鉗表分別測(cè)出R1、R2和R3。</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none">則可計(jì)算出：</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none">儲(chǔ)油罐接地電阻為： RA=（R1+R2-R3）÷2</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none">裝卸點(diǎn)接地電阻為： RC=R2-RA</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none">輔助地極接地電阻為： RB=R1-RA</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none">注：測(cè)R1時(shí)，BC、AC間不能有導(dǎo)線連接。測(cè)R2、R3時(shí)類推。</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none"><strong style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; outline:0px; text-size-adjust:none">(2) 加油機(jī)接地電阻的測(cè)量:</strong></span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none"> </span><img alt="ETCR2000系列鉗形接地電阻儀現(xiàn)場(chǎng)應(yīng)用" border="0" src="https://0.rc.xiniu.com/g2/M00/AB/D9/CgAGe1tW6yOAXn5FAACA1xFgyj4637.png" style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); border:0px none; box-sizing:border-box; height:auto; max-width:100%; outline:0px; text-size-adjust:none; vertical-align:top; width:307px" title="ETCR2000系列鉗形接地電阻儀現(xiàn)場(chǎng)應(yīng)用" /></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none">如上圖，找一個(gè)與加油機(jī)接地極互相獨(dú)立的接地極，如裝卸點(diǎn)接地極等。用測(cè)試線將兩點(diǎn)連接起來，用鉗表測(cè)出讀數(shù)RT。則可計(jì)算出：加油機(jī)接地電阻為:</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none">R=RT-RC</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none">其中: RT為鉗表所測(cè)阻值。RC為裝卸點(diǎn)接地電阻。</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none"><strong style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; outline:0px; text-size-adjust:none">（3）加油機(jī)輸油軟管連接電阻的測(cè)量:</strong></span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none">用一根測(cè)試線將加油槍和加油機(jī)連接起來。用鉗表測(cè)出讀數(shù)RT。則可計(jì)算出：</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none">加油機(jī)軟管連接電阻為: R=RT-RL</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none">其中: RT為鉗表所測(cè)阻值。RL為測(cè)試線的電阻。</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none"> <img alt="ETCR2000系列鉗形接地電阻儀現(xiàn)場(chǎng)應(yīng)用" border="0" src="https://0.rc.xiniu.com/g2/M00/AB/DA/CgAGe1tW7CWAK3xgAABohUs-mR8892.png" style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); border:0px none; box-sizing:border-box; height:auto; max-width:100%; outline:0px; text-size-adjust:none; vertical-align:top; width:300px" title="ETCR2000系列鉗形接地電阻儀現(xiàn)場(chǎng)應(yīng)用" /></span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"> </p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none"><strong style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; outline:0px; text-size-adjust:none">11. 鉗表測(cè)量點(diǎn)的選擇：</strong></span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none">測(cè)試接地電阻時(shí)測(cè)量點(diǎn)的選擇是十分重要的。（請(qǐng)見下圖）</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none">在A點(diǎn)測(cè)量時(shí)鉗表顯示“OLΩ”，沒有形成回路，測(cè)量點(diǎn)是錯(cuò)誤的。</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-family:微軟雅黑,sans-serif; font-size:16px; outline:0px; text-size-adjust:none">在B點(diǎn)測(cè)量時(shí)鉗表顯示“L0.01Ω”，測(cè)試的是金屬回路的阻值，測(cè)量點(diǎn)是錯(cuò)誤的。</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none">在C點(diǎn)測(cè)量才是正確的。</span></p><p style="box-sizing: border-box; margin: 0px 0px 0px 28px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; line-height: 2em;"><img alt="ETCR2000系列鉗形接地電阻儀現(xiàn)場(chǎng)應(yīng)用" border="0" src="https://0.rc.xiniu.com/g2/M00/AB/DA/CgAGe1tW7F-AZ6inAACsI1vtLUk779.png" style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); border:0px none; box-sizing:border-box; height:auto; max-width:100%; outline:0px; text-size-adjust:none; vertical-align:top; width:308px" title="ETCR2000系列鉗形接地電阻儀現(xiàn)場(chǎng)應(yīng)用" /></p><p style="box-sizing: border-box; margin: 0px 0px 0px 28px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px;"> </p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none"><strong style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; outline:0px; text-size-adjust:none">12. 使用鉗表的其他注意事項(xiàng)</strong></span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; font-family:wingdings; outline:0px; text-size-adjust:none">u<span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; font-size:9px; font-stretch:normal; font-variant-numeric:normal; line-height:normal; outline:0px; text-size-adjust:none"> </span></span><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; font-family:微軟雅黑,sans-serif; outline:0px; text-size-adjust:none">開機(jī)前，扣壓扳機(jī)一兩次，確保鉗口閉合良好。</span></span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; font-family:wingdings; outline:0px; text-size-adjust:none">u<span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; font-size:9px; font-stretch:normal; font-variant-numeric:normal; line-height:normal; outline:0px; text-size-adjust:none"> </span></span><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; font-family:微軟雅黑,sans-serif; outline:0px; text-size-adjust:none">正確開機(jī)，顯示“OL Ω”符號(hào)后，才能鉗測(cè)接地線。</span></span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; font-family:wingdings; outline:0px; text-size-adjust:none">u<span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; font-size:9px; font-stretch:normal; font-variant-numeric:normal; line-height:normal; outline:0px; text-size-adjust:none"> </span></span><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; font-family:微軟雅黑,sans-serif; outline:0px; text-size-adjust:none">鉗口接觸平面必須保持清潔，不能用腐蝕劑和粗糙物擦拭。</span></span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; font-family:wingdings; outline:0px; text-size-adjust:none">u<span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; font-size:9px; font-stretch:normal; font-variant-numeric:normal; line-height:normal; outline:0px; text-size-adjust:none"> </span></span><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; font-family:微軟雅黑,sans-serif; outline:0px; text-size-adjust:none">本鉗表是精密儀器，避免鉗表受沖擊，尤其是鉗口接合面。</span></span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; font-family:wingdings; outline:0px; text-size-adjust:none">u</span><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; font-stretch:normal; line-height:normal; outline:0px; text-size-adjust:none"> </span>本鉗表在測(cè)量電阻時(shí)鉗頭會(huì)發(fā)出連續(xù)的輕微“嗡--”聲，這是正常的，注意區(qū)別報(bào)警的“嘟--嘟--嘟--”聲。</span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 2em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; font-family:wingdings; outline:0px; text-size-adjust:none">u<span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; font-size:9px; font-stretch:normal; font-variant-numeric:normal; line-height:normal; outline:0px; text-size-adjust:none"> </span></span><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; font-family:微軟雅黑,sans-serif; outline:0px; text-size-adjust:none">長(zhǎng)時(shí)間不用本鉗表，請(qǐng)取出電池。</span></span></p><p style="box-sizing: border-box; margin: 0px 0px 0px 28px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 0em; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; font-family:wingdings; outline:0px; text-size-adjust:none">u<span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; font-size:9px; font-stretch:normal; font-variant-numeric:normal; line-height:normal; outline:0px; text-size-adjust:none"> </span></span><strong style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; outline:0px; text-size-adjust:none"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; font-family:微軟雅黑,sans-serif; outline:0px; text-size-adjust:none">C</span></strong><strong style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; outline:0px; text-size-adjust:none"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; font-family:微軟雅黑,sans-serif; outline:0px; text-size-adjust:none">型鉗表可以測(cè)試接地線上的漏電流，但禁止用鉗表鉗測(cè)動(dòng)力線電流，鉗測(cè)大電流會(huì)對(duì)鉗表的磁環(huán)造成不可逆轉(zhuǎn)的損壞，甚至?xí)斐摄Q表的報(bào)廢</span></strong></span></p><p style="box-sizing: border-box; margin: 0px 0px 0px 28px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 0em; line-height: 2em;"><strong style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); outline:0px; text-align:center; text-indent:0em; text-size-adjust:none"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; font-family:微軟雅黑,sans-serif; font-size:24px; outline:0px; text-size-adjust:none"> ETCR2000系列鉗形接地電阻儀</span></strong></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px;"> </p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 0em; text-align: center; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); outline:0px; text-size-adjust:none"><strong style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; outline:0px; text-size-adjust:none"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; font-size:24px; outline:0px; text-size-adjust:none">現(xiàn)場(chǎng)應(yīng)用</span></strong></span></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 0em; text-align: center; line-height: 2em;"><img alt="ETCR2000系列鉗形接地電阻儀現(xiàn)場(chǎng)應(yīng)用" border="0" src="https://0.rc.xiniu.com/g2/M00/B6/D2/CgAGfFtWyUmAKhFuAABEQRMP8I8276.jpg" style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); border:0px none; box-sizing:border-box; height:auto; max-width:100%; outline:0px; text-size-adjust:none; vertical-align:top; width:200px" title="ETCR2000系列鉗形接地電阻儀現(xiàn)場(chǎng)應(yīng)用" /></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 0em; text-align: center; line-height: 2em;"><img alt="ETCR2000系列鉗形接地電阻儀現(xiàn)場(chǎng)應(yīng)用" border="0" src="https://0.rc.xiniu.com/g2/M00/B6/D2/CgAGfFtWyUaAJ9JYAADrqNrVQMM633.jpg" style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); border:0px none; box-sizing:border-box; height:auto; max-width:100%; outline:0px; text-size-adjust:none; vertical-align:top; width:455px" title="ETCR2000系列鉗形接地電阻儀現(xiàn)場(chǎng)應(yīng)用" /><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); outline:0px; text-size-adjust:none"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; font-size:16px; outline:0px; text-size-adjust:none"> </span></span><img alt="ETCR2000系列鉗形接地電阻儀現(xiàn)場(chǎng)應(yīng)用" border="0" src="https://0.rc.xiniu.com/g2/M00/B6/D2/CgAGfFtWyUeAA3MJAAJE00myCS0454.jpg" style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); border:0px none; box-sizing:border-box; height:auto; max-width:100%; outline:0px; text-size-adjust:none; vertical-align:top; width:332px" title="ETCR2000系列鉗形接地電阻儀現(xiàn)場(chǎng)應(yīng)用" /></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 0em; text-align: center; line-height: 2em;"> <img alt="ETCR2000系列鉗形接地電阻儀現(xiàn)場(chǎng)應(yīng)用" border="0" src="https://0.rc.xiniu.com/g2/M00/B6/D2/CgAGfFtWyUiAOnhpAAJLBGoHGbQ783.jpg" style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); border:0px none; box-sizing:border-box; height:auto; max-width:100%; outline:0px; text-size-adjust:none; vertical-align:top; width:307px" title="ETCR2000系列鉗形接地電阻儀現(xiàn)場(chǎng)應(yīng)用" /><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); outline:0px; text-size-adjust:none"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; font-size:16px; outline:0px; text-size-adjust:none"> </span></span><img alt="ETCR2000系列鉗形接地電阻儀現(xiàn)場(chǎng)應(yīng)用" border="0" src="https://0.rc.xiniu.com/g2/M00/B6/D2/CgAGfFtWyUmAdvG-AAK__VmL2j0609.jpg" style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); border:0px none; box-sizing:border-box; height:auto; max-width:100%; outline:0px; text-size-adjust:none; vertical-align:top; width:325px" title="ETCR2000系列鉗形接地電阻儀現(xiàn)場(chǎng)應(yīng)用" /></p><p style="box-sizing: border-box; margin: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); padding: 0px; color: rgb(136, 136, 136); font-family: 微軟雅黑; font-size: 14px; text-indent: 0em; text-align: center; line-height: 2em;"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; color:rgb(63, 63, 63); font-size:16px; outline:0px; text-size-adjust:none"><strong style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; outline:0px; text-size-adjust:none"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; font-family:微軟雅黑,sans-serif; outline:0px; text-size-adjust:none">ETCR2000</span></strong><strong style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; outline:0px; text-size-adjust:none"><span style="-webkit-tap-highlight-color:rgba(0, 0, 0, 0); box-sizing:border-box; font-family:微軟雅黑,sans-serif; outline:0px; text-size-adjust:none">系列鉗形接地電阻儀現(xiàn)場(chǎng)應(yīng)用</span></strong></span></p></div> <div id="f0kbceeioz" class="inside_newsthree"> <p id="newsprev">上一篇：<b class="newsprev"><a href="/Article-2096157.html">KDWHX-8000B開關(guān)柜核相儀產(chǎn)品簡(jiǎn)介</a></b></p> <p id="newsnext">下一篇：<b class="newsnext"><a href="/Article-2082525.html">ETCR2000鉗形接地電阻儀正確開機(jī)</a></b></p> <span><a href="/article.html">返回列表>></a></span> </div> </div> </div> </div> </div>    <div class="f0kbceeioz" id="z_Footer"> <div id="f0kbceeioz" class="pz_down"> <div id="f0kbceeioz" class="w_1200"> <div id="f0kbceeioz" class="footT"> <div id="f0kbceeioz" class="footAddr"> <div id="f0kbceeioz" class="footTit">上?？档请姎饪萍加邢薰?/div> <div id="f0kbceeioz" class="dAddr"><img class="ico" src="/Skins/341989/images/icon_foot1.png">地址：上海市普陀區(qū)金通路1118弄6號(hào)</div> <div id="f0kbceeioz" class="dAddr"><img class="ico" src="/Skins/341989/images/icon_foot2.png">電話：86-021-51097529</div> <div id="f0kbceeioz" class="dAddr"><img class="ico" src="/Skins/341989/images/icon_foot3.png">郵箱：3502948309@qq.com</div> <div id="f0kbceeioz" class="dAddr"><img class="ico" src="/Skins/341989/images/icon_foot4.png">傳真：86-021-51714615</div> </div> <div id="f0kbceeioz" class="footNav"> <div id="f0kbceeioz" class="footTit">快速鏈接</div> <div id="f0kbceeioz" class="dNav"> <ul> <li><a href="/">首頁</a></li> <li><a href="/aboutus.html">關(guān)于我們</a></li> <li><a href="/products.html">產(chǎn)品展示</a></li> <li><a href="/news.html">新聞中心</a></li> <li><a href="/article.html">技術(shù)文章</a></li>  <li><a href="/order.html">在線留言</a></li> <li><a href="/contact.html">聯(lián)系我們</a></li> </ul> </div> </div> <div id="f0kbceeioz" class="footUs"> <div id="f0kbceeioz" class="footTit">關(guān)注我們</div> <div id="f0kbceeioz" class="ewm1">歡迎您關(guān)注我們的微信公眾號(hào)了解更多信息：</div> <div id="f0kbceeioz" class="ewm2"> <div id="f0kbceeioz" class="img"><img src="/Skins/341989/images/2wm.jpg" width="100%" alt=""></div> <div id="f0kbceeioz" class="info">掃一掃<br>關(guān)注我們</div> </div> </div> </div> </div> <div id="f0kbceeioz" class="w_1200"> <div id="f0kbceeioz" class="footD"> <div id="f0kbceeioz" class="Copyright">版權(quán)所有 © 2025 上?？档请姎饪萍加邢薰? 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