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id="pr3mjyzo" class="text pull-left">文章詳情</span> </div> <div id="pr3mjyzo" class="phx-panel"> <div class="pr3mjyzo" id="app_52253022_style" class="hide"> </div> <div id="pr3mjyzo" class="appWrapper" id="app_52253022" role="draggable" data-type="app" data-appid="datumInfo" data-config="" data-state="true"> <div id="pr3mjyzo" class="appMask"></div> <div id="pr3mjyzo" class="appContent"> <div id="pr3mjyzo" class="datum_info"> <h1 class="title">大型地網(wǎng)接地電阻表接線圖</h1> <div id="pr3mjyzo" class="bgcolor_01"> <div id="pr3mjyzo" class="bgcolor_sum"> <div id="pr3mjyzo" class="left">日期：2024-11-19 02:43</div> <div id="pr3mjyzo" class="right">瀏覽次數(shù)：260</div> </div> <div id="pr3mjyzo" class="bgcolor_sum01"> 摘要：上?？档请姎饪萍加邢薰? 電力技術(shù) </div> </div> <div id="pr3mjyzo" class="content"> <p style="margin-top:0px;margin-bottom:0px;padding:0px;border:0px;font-variant-numeric:inherit;font-variant-east-asian:inherit;font-stretch:inherit;font-size:15px;line-height:2em;font-family:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:justify;background-color:#FFFFFF;"> <span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:16px;line-height:inherit;font-family:微軟雅黑, "Microsoft YaHei";vertical-align:baseline;box-sizing:border-box;"><span style="color:#ff3333;font-family:inherit;"><span style="border-style:initial;border-color:initial;border-image:initial;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;line-height:inherit;box-sizing:border-box;">大型地網(wǎng)接地電阻表接線圖</span></span><br> </span> </p> <p style="margin-top:18px;margin-bottom: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:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:justify;background-color:#FFFFFF;"> <span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:16px;line-height:inherit;font-family:微軟雅黑, "Microsoft YaHei";vertical-align:baseline;box-sizing:border-box;"> 1、地網(wǎng)測試方法</span><span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:inherit;line-height:inherit;font-family:微軟雅黑, "Microsoft YaHei";vertical-align:baseline;box-sizing:border-box;"> </span> </p> <p style="margin-top:18px;margin-bottom: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:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:center;background-color:#FFFFFF;"> <img alt="" src="/ueditor/php/upload/image/20210514/1620963800847068.jpg" width="500" height="167" _src="/ueditor/php/upload/image/20210514/1620963800847068.jpg" style="margin:0px;padding:0px;font:inherit;vertical-align:baseline;box-sizing:border-box;"> </p> <p style="margin-top:18px;margin-bottom:0px;padding:0px;border:0px;font-variant-numeric:inherit;font-variant-east-asian:inherit;font-stretch:inherit;font-size:15px;line-height:23px;font-family:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:justify;background-color:#FFFFFF;"> <br> </p> <p style="margin-top:18px;margin-bottom: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:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:center;background-color:#FFFFFF;"> <span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:16px;line-height:inherit;font-family:微軟雅黑, "Microsoft YaHei";vertical-align:baseline;box-sizing:border-box;">圖三極法測量接線圖</span> </p> <p style="margin-top:18px;margin-bottom: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:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:justify;background-color:#FFFFFF;"> <span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:16px;line-height:inherit;font-family:微軟雅黑, "Microsoft YaHei";vertical-align:baseline;box-sizing:border-box;"> 測量電流線D：線徑≥1.5mm2 ,長度為地網(wǎng)對角線長度的3 ～ 5倍;</span> </p> <p style="margin-top:18px;margin-bottom: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:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:justify;background-color:#FFFFFF;"> <span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:16px;line-height:inherit;font-family:微軟雅黑, "Microsoft YaHei";vertical-align:baseline;box-sizing:border-box;"> 測量電壓線1：線徑≥1.0 mm2 ,長度為0.618D;</span> </p> <p style="margin-top:18px;margin-bottom: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:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:justify;background-color:#FFFFFF;"> <span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:16px;line-height:inherit;font-family:微軟雅黑, "Microsoft YaHei";vertical-align:baseline;box-sizing:border-box;"> 測量電壓線2：接被測地網(wǎng);</span> </p> <p style="margin-top:18px;margin-bottom: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:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:justify;background-color:#FFFFFF;"> <span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:16px;line-height:inherit;font-family:微軟雅黑, "Microsoft YaHei";vertical-align:baseline;box-sizing:border-box;"> 測量接地線：接被測地網(wǎng)。</span><span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:inherit;line-height:inherit;font-family:微軟雅黑, "Microsoft YaHei";vertical-align:baseline;box-sizing:border-box;"> </span> </p> <p style="margin-top:18px;margin-bottom: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:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:center;background-color:#FFFFFF;"> <img alt="" src="/ueditor/php/upload/image/20210514/1620963800847068.jpg" width="500" height="167" _src="/ueditor/php/upload/image/20210514/1620963800847068.jpg" style="margin:0px;padding:0px;font:inherit;vertical-align:baseline;box-sizing:border-box;"> </p> <p style="margin-top:18px;margin-bottom:0px;padding:0px;border:0px;font-variant-numeric:inherit;font-variant-east-asian:inherit;font-stretch:inherit;font-size:15px;line-height:23px;font-family:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:justify;background-color:#FFFFFF;"> <br> </p> <p style="margin-top:18px;margin-bottom: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:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:center;background-color:#FFFFFF;"> <span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:16px;line-height:inherit;font-family:微軟雅黑, "Microsoft YaHei";vertical-align:baseline;box-sizing:border-box;">圖四極法測量接線圖</span> </p> <p style="margin-top:18px;margin-bottom: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:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:justify;background-color:#FFFFFF;"> <span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:16px;line-height:inherit;font-family:微軟雅黑, "Microsoft YaHei";vertical-align:baseline;box-sizing:border-box;"> 四極法測量時，從地網(wǎng)的地樁上引出二根連接線分別接到儀器的電壓極P2、接地網(wǎng)C2兩接線柱，然后按測量操作步驟進行測試。四極法測量時儀器會自動消除接線誤差。</span> </p> <p style="margin-top:18px;margin-bottom: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:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:justify;background-color:#FFFFFF;"> <span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:16px;line-height:inherit;font-family:微軟雅黑, "Microsoft YaHei";vertical-align:baseline;box-sizing:border-box;"> 注意：測量線根據(jù)地網(wǎng)的大小由使用者自配。如需本公司配線需另收費。.</span> </p> <p style="margin-top:18px;margin-bottom: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:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:justify;background-color:#FFFFFF;"> <span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:16px;line-height:inherit;font-family:微軟雅黑, "Microsoft YaHei";vertical-align:baseline;box-sizing:border-box;"> 1、測量范圍：0～999Ω(含電流樁阻抗)</span> </p> <p style="margin-top:18px;margin-bottom: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:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:justify;background-color:#FFFFFF;"> <span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:16px;line-height:inherit;font-family:微軟雅黑, "Microsoft YaHei";vertical-align:baseline;box-sizing:border-box;"> 2、分辨率：0.001Ω</span> </p> <p style="margin-top:18px;margin-bottom: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:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:justify;background-color:#FFFFFF;"> <span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:16px;line-height:inherit;font-family:微軟雅黑, "Microsoft YaHei";vertical-align:baseline;box-sizing:border-box;"> 3、測量誤差：±(讀數(shù)×1%+0.005Ω)</span> </p> <p style="margin-top:18px;margin-bottom: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:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:justify;background-color:#FFFFFF;"> <span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:16px;line-height:inherit;font-family:微軟雅黑, "Microsoft YaHei";vertical-align:baseline;box-sizing:border-box;"> 4、輸出電壓：AC 400V (45Hz、55Hz，雙頻，正弦波)</span> </p> <p style="margin-top:18px;margin-bottom: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:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:justify;background-color:#FFFFFF;"> <span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:16px;line-height:inherit;font-family:微軟雅黑, "Microsoft YaHei";vertical-align:baseline;box-sizing:border-box;"> 5、輸出電流：AC 3A (45Hz、55Hz，雙頻，正弦波)</span> </p> <p style="margin-top:18px;margin-bottom: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:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:justify;background-color:#FFFFFF;"> <span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:16px;line-height:inherit;font-family:微軟雅黑, "Microsoft YaHei";vertical-align:baseline;box-sizing:border-box;"> 6、電流輸出檔位：3/2.5/2/1.5/1A，每0.5A一檔，共5檔。</span> </p> <p style="margin-top:18px;margin-bottom: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:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:justify;background-color:#FFFFFF;"> <span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:16px;line-height:inherit;font-family:微軟雅黑, "Microsoft YaHei";vertical-align:baseline;box-sizing:border-box;"> 7、抗干擾能力：抗工頻50Hz</span> </p> <p style="margin-top:18px;margin-bottom: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:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:justify;background-color:#FFFFFF;"> <span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:16px;line-height:inherit;font-family:微軟雅黑, "Microsoft YaHei";vertical-align:baseline;box-sizing:border-box;"> 2、接觸電壓、接觸電位差測試方法</span> </p> <p style="margin-top:18px;margin-bottom: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:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:justify;background-color:#FFFFFF;"> <span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:16px;line-height:inherit;font-family:微軟雅黑, "Microsoft YaHei";vertical-align:baseline;box-sizing:border-box;"> 接觸電壓的測量接線圖如下圖所示?？砂聪率霾襟E進行測試。</span><span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:inherit;line-height:inherit;font-family:微軟雅黑, "Microsoft YaHei";vertical-align:baseline;box-sizing:border-box;"> </span> </p> <p style="margin-top:18px;margin-bottom: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:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:center;background-color:#FFFFFF;"> <img alt="" src="/ueditor/php/upload/image/20210514/1620963800208032.jpg" width="500" height="222" _src="/ueditor/php/upload/image/20210514/1620963800208032.jpg" style="margin:0px;padding:0px;font:inherit;vertical-align:baseline;box-sizing:border-box;"> </p> <p style="margin-top:18px;margin-bottom:0px;padding:0px;border:0px;font-variant-numeric:inherit;font-variant-east-asian:inherit;font-stretch:inherit;font-size:15px;line-height:23px;font-family:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:justify;background-color:#FFFFFF;"> <br> </p> <p style="margin-top:18px;margin-bottom: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:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:center;background-color:#FFFFFF;"> <span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:16px;line-height:inherit;font-family:微軟雅黑, "Microsoft YaHei";vertical-align:baseline;box-sizing:border-box;">圖接觸電壓測量接線圖</span> </p> <p style="margin-top:18px;margin-bottom: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:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:justify;background-color:#FFFFFF;"> <span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:16px;line-height:inherit;font-family:微軟雅黑, "Microsoft YaHei";vertical-align:baseline;box-sizing:border-box;"> 在離接地裝置較遠(yuǎn)處打一個地樁作為電流極，該電流極離接地裝置邊緣的距離仍取為接地裝置*大對角線長度D的4倍以上。</span> </p> <p style="margin-top:18px;margin-bottom: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:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:justify;background-color:#FFFFFF;"> <span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:16px;line-height:inherit;font-family:微軟雅黑, "Microsoft YaHei";vertical-align:baseline;box-sizing:border-box;"> 用導(dǎo)線將儀器面板的C 端子與電流極可靠連接。再用導(dǎo)線將儀器的E 端子接至被試設(shè)備的架構(gòu)。</span> </p> <p style="margin-top:18px;margin-bottom: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:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:justify;background-color:#FFFFFF;"> <span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:16px;line-height:inherit;font-family:微軟雅黑, "Microsoft YaHei";vertical-align:baseline;box-sizing:border-box;"> 儀器的P1 端子接至設(shè)備架構(gòu)上的Pa 點，Pa 距地面高度為1.8 米。儀器的P2 端子接至模擬腳的電極Pb,該電極可采用包裹濕布的直徑為500px 的金屬圓盤，并壓上重物。電極中心距設(shè)備邊緣距離為1 米。</span> </p> <p style="margin-top:18px;margin-bottom: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:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:justify;background-color:#FFFFFF;"> <span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:16px;line-height:inherit;font-family:微軟雅黑, "Microsoft YaHei";vertical-align:baseline;box-sizing:border-box;"> 儀器P1 與P2 端子間并聯(lián)等效人體電阻Rm，一般取Rm=1.5KΩ.檢測接線無誤后，接通儀器電源，選擇執(zhí)行“接地阻抗測量”，再設(shè)置好測試電流，儀器開始測量，測量完畢，可從液晶屏上讀取到阻抗值Z。</span> </p> <p style="margin-top:18px;margin-bottom: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:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:justify;background-color:#FFFFFF;"> <span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:16px;line-height:inherit;font-family:微軟雅黑, "Microsoft YaHei";vertical-align:baseline;box-sizing:border-box;"> *后根據(jù)下式計算出接觸電壓Uj</span> </p> <p style="margin-top:18px;margin-bottom: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:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:justify;background-color:#FFFFFF;"> <span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:16px;line-height:inherit;font-family:微軟雅黑, "Microsoft YaHei";vertical-align:baseline;box-sizing:border-box;"> Uj=Z * Is</span> </p> <p style="margin-top:18px;margin-bottom: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:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:justify;background-color:#FFFFFF;"> <span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:16px;line-height:inherit;font-family:微軟雅黑, "Microsoft YaHei";vertical-align:baseline;box-sizing:border-box;"> 式中Is 為被測接地裝置內(nèi)系統(tǒng)單相接地故障電流。</span> </p> <p style="margin-top:18px;margin-bottom: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:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:justify;background-color:#FFFFFF;"> <span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:16px;line-height:inherit;font-family:微軟雅黑, "Microsoft YaHei";vertical-align:baseline;box-sizing:border-box;"> 上述測量中，若儀器電壓輸入端不并聯(lián)等效人體電阻Rm，則所得結(jié)果為接觸電位差。</span> </p> <p style="margin-top:18px;margin-bottom: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:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:justify;background-color:#FFFFFF;"> <span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:16px;line-height:inherit;font-family:微軟雅黑, "Microsoft YaHei";vertical-align:baseline;box-sizing:border-box;"> 3、跨步電壓、跨步電位差測試方法</span> </p> <p style="margin-top:18px;margin-bottom: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:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:justify;background-color:#FFFFFF;"> <span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:16px;line-height:inherit;font-family:微軟雅黑, "Microsoft YaHei";vertical-align:baseline;box-sizing:border-box;"> 跨步電壓的測量接線圖如圖所示。可按下述步驟進行測試。</span><span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:inherit;line-height:inherit;font-family:微軟雅黑, "Microsoft YaHei";vertical-align:baseline;box-sizing:border-box;"> </span> </p> <p style="margin-top:18px;margin-bottom: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:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:center;background-color:#FFFFFF;"> <img alt="" src="/ueditor/php/upload/image/20210514/1620963800886750.jpg" width="484" height="213" _src="/ueditor/php/upload/image/20210514/1620963800886750.jpg" style="margin:0px;padding:0px;font:inherit;vertical-align:baseline;box-sizing:border-box;"> </p> <p style="margin-top:18px;margin-bottom:0px;padding:0px;border:0px;font-variant-numeric:inherit;font-variant-east-asian:inherit;font-stretch:inherit;font-size:15px;line-height:23px;font-family:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:justify;background-color:#FFFFFF;"> <br> </p> <p style="margin-top:18px;margin-bottom: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:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:center;background-color:#FFFFFF;"> <span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:16px;line-height:inherit;font-family:微軟雅黑, "Microsoft YaHei";vertical-align:baseline;box-sizing:border-box;">圖跨步電壓測量接線圖</span> </p> <p style="margin-top:18px;margin-bottom: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:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:justify;background-color:#FFFFFF;"> <span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:16px;line-height:inherit;font-family:微軟雅黑, "Microsoft YaHei";vertical-align:baseline;box-sizing:border-box;"> 在離接地裝置較遠(yuǎn)處打一個地樁作為電流極，該電流極離接地裝置邊緣的距離仍取為接地裝置*大對角線長度D的4倍以上。</span> </p> <p style="margin-top:18px;margin-bottom: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:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:justify;background-color:#FFFFFF;"> <span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:16px;line-height:inherit;font-family:微軟雅黑, "Microsoft YaHei";vertical-align:baseline;box-sizing:border-box;"> 用導(dǎo)線將儀器面板的C 端子與電流極可靠連接。再用導(dǎo)線將儀器的E 端子接至設(shè)備的接地引下線。</span> </p> <p style="margin-top:18px;margin-bottom: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:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:justify;background-color:#FFFFFF;"> <span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:16px;line-height:inherit;font-family:微軟雅黑, "Microsoft YaHei";vertical-align:baseline;box-sizing:border-box;"> 儀器的P1、P2端子分別接至模擬人腳的電極Pc、Pd,該電極可采用包裹濕布的直徑為500px 的金屬圓盤，并壓上重物。兩電極中心距離為1 米。</span> </p> <p style="margin-top:18px;margin-bottom: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:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:justify;background-color:#FFFFFF;"> <span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:16px;line-height:inherit;font-family:微軟雅黑, "Microsoft YaHei";vertical-align:baseline;box-sizing:border-box;"> 儀器P1與P2端子間并聯(lián)等效人體電阻Rm，一般取Rm=1.5KΩ.檢測接線無誤后，接通儀器電源，選擇執(zhí)行“接地阻抗測量”，設(shè)置好測試電流，儀器開始測量，測量完畢，可從液晶屏上讀取到阻抗值Z。</span> </p> <p style="margin-top:18px;margin-bottom: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:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:justify;background-color:#FFFFFF;"> <span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:16px;line-height:inherit;font-family:微軟雅黑, "Microsoft YaHei";vertical-align:baseline;box-sizing:border-box;"> *后根據(jù)下式計算出跨步電壓Uk</span> </p> <p style="margin-top:18px;margin-bottom: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:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:justify;background-color:#FFFFFF;"> <span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:16px;line-height:inherit;font-family:微軟雅黑, "Microsoft YaHei";vertical-align:baseline;box-sizing:border-box;"> Uk=Z* Is</span> </p> <p style="margin-top:18px;margin-bottom: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:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:justify;background-color:#FFFFFF;"> <span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:16px;line-height:inherit;font-family:微軟雅黑, "Microsoft YaHei";vertical-align:baseline;box-sizing:border-box;"> 式中Is 為被測接地裝置內(nèi)系統(tǒng)單相接地故障電流。上述測量中，若儀器電壓輸入端不并聯(lián)等效人體電阻Rm，則所得結(jié)果為跨步電位差。</span> </p> <p style="margin-top:18px;margin-bottom: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:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:justify;background-color:#FFFFFF;"> <span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:16px;line-height:inherit;font-family:微軟雅黑, "Microsoft YaHei";vertical-align:baseline;box-sizing:border-box;"> 4、土壤電阻率測試</span> </p> <p style="margin-top:18px;margin-bottom: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:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:justify;background-color:#FFFFFF;"> <span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:16px;line-height:inherit;font-family:微軟雅黑, "Microsoft YaHei";vertical-align:baseline;box-sizing:border-box;"> 使用本儀器，可以采用單極法或者四極法來測量土壤電阻率。下面以四極法為例來說明。測量土壤電阻率的接線如圖所示。</span> </p> <p style="margin-top:18px;margin-bottom: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:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:center;background-color:#FFFFFF;"> <img alt="" src="/ueditor/php/upload/image/20210514/1620963800159079.jpg" width="257" height="185" _src="/ueditor/php/upload/image/20210514/1620963800159079.jpg" style="margin:0px;padding:0px;font:inherit;vertical-align:baseline;box-sizing:border-box;"> </p> <p style="margin-top:18px;margin-bottom:0px;padding:0px;border:0px;font-variant-numeric:inherit;font-variant-east-asian:inherit;font-stretch:inherit;font-size:15px;line-height:23px;font-family:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:justify;background-color:#FFFFFF;"> <br> </p> <p style="margin-top:18px;margin-bottom: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:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:center;background-color:#FFFFFF;"> <span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:16px;line-height:inherit;font-family:微軟雅黑, "Microsoft YaHei";vertical-align:baseline;box-sizing:border-box;">圖四極法測量土壤電阻率接線圖</span> </p> <p style="margin-top:18px;margin-bottom: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:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:justify;background-color:#FFFFFF;"> <span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:16px;line-height:inherit;font-family:微軟雅黑, "Microsoft YaHei";vertical-align:baseline;box-sizing:border-box;"> 圖中，a 為電流極與電位極的間距，b 為兩電位極的間距，h 為電極埋設(shè)深度。當(dāng)a=b 時即為溫納法。為了計算方便，請讓電極間距a、b 遠(yuǎn)大于埋設(shè)深度h,一般應(yīng)滿足a、b>10h。</span> </p> <p style="margin-top:18px;margin-bottom: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:Arial, "Microsoft YaHei", 黑體, sans-serif, Tahoma;vertical-align:baseline;box-sizing:border-box;color:#333333;text-align:justify;background-color:#FFFFFF;"> <span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;font-size:16px;line-height:inherit;font-family:微軟雅黑, "Microsoft YaHei";vertical-align:baseline;box-sizing:border-box;"> 測試電極宜采用直徑不小于37.5px 的圓鋼或25mm×25mm×4mm 的角鋼，</span> </p> </div> <div id="pr3mjyzo" class="datumrelate"> <span>下一篇：</span> <a href="/kangdengdq_Article_11624067.html" title="直流高壓發(fā)生器工作原理圖">直流高壓發(fā)生器工作原理圖</a> <br> <span>上一篇：</span> <a href="/kangdengdq_Article_11624070.html" 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