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<div id="pr3mjyzo" class="bgcolor_sum01"> 摘要：上?？档请姎饪萍加邢薰倦娏夹g(shù) </div> </div> <div id="pr3mjyzo" class="content"> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:22pt;text-indent:24.1pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">一、用途</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:22pt;text-indent:24.1pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">本電橋?yàn)殡娮璺謮菏降淖兓姌?，能直接讀出變壓器的變壓比和變壓比的誤差，測(cè)試精度高，量限寬，操作方便。</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:22pt;text-indent:24.1pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">二、主要技術(shù)數(shù)據(jù)</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:22pt;text-indent:24.1pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">1<span style="box-sizing:border-box;font-family:宋體;">、使用條件：環(huán)境溫度：</span><span style="box-sizing:border-box;font-family:'Times New Roman';">0~40</span><span style="box-sizing:border-box;font-family:宋體;">℃相對(duì)濕度不大于</span><span style="box-sizing:border-box;font-family:'Times New Roman';">80%</span><span style="box-sizing:border-box;font-family:宋體;">。</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:22pt;text-indent:24.1pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">2<span style="box-sizing:border-box;font-family:宋體;">、變化測(cè)量范圍：</span><span style="box-sizing:border-box;font-family:'Times New Roman';">1.02~111.12</span><span style="box-sizing:border-box;font-family:宋體;">。</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:22pt;text-indent:24.1pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">3<span style="box-sizing:border-box;font-family:宋體;">、誤差測(cè)量范圍：</span><span style="box-sizing:border-box;font-family:'Times New Roman';">-2~+2%</span><span style="box-sizing:border-box;font-family:宋體;">。</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:22pt;text-indent:24.1pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">4<span style="box-sizing:border-box;font-family:宋體;">、準(zhǔn)確度：±</span><span style="box-sizing:border-box;font-family:'Times New Roman';">0.2%</span><span style="box-sizing:border-box;font-family:宋體;">。</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:22pt;text-indent:24.1pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">5<span style="box-sizing:border-box;font-family:宋體;">、放大器電源：</span><span style="box-sizing:border-box;font-family:'Times New Roman';">220V50~</span><span style="box-sizing:border-box;font-family:宋體;">。</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:22pt;text-indent:24.1pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">6<span style="box-sizing:border-box;font-family:宋體;">、測(cè)量回路電壓：</span><span style="box-sizing:border-box;font-family:'Times New Roman';">0~600</span><span style="box-sizing:border-box;font-family:宋體;">伏，</span><span style="box-sizing:border-box;font-family:'Times New Roman';">50~</span><span style="box-sizing:border-box;font-family:宋體;">。</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:22pt;text-indent:24.1pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">7<span style="box-sizing:border-box;font-family:宋體;">、橋體十進(jìn)電阻工作電流：</span><span style="box-sizing:border-box;font-family:'Times New Roman';">5</span><span style="box-sizing:border-box;font-family:宋體;">毫安。</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:22pt;text-indent:24.1pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">三、工作原理</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:22pt;text-indent:24.1pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">變壓比電橋工作示意圖如下：</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"> <img width="96" height="96" alt="" src="http://y1.yzimgs.com/ComFolder/486823/201404/%E5%9B%BE%E7%89%871.png?imageView2/2/format/webp/" style="box-sizing:border-box;vertical-align:middle;height:auto;"></span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:22pt;text-indent:24.1pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">一般變壓比電橋的測(cè)量原理圖如圖二所示，在被試變壓器的初級(jí)側(cè)，施加一個(gè)電壓<span style="box-sizing:border-box;font-family:'Times New Roman';">U1</span><span style="box-sizing:border-box;font-family:宋體;">，則在變壓器的次級(jí)側(cè)有一個(gè)感應(yīng)電壓</span><span style="box-sizing:border-box;font-family:'Times New Roman';">U2</span><span style="box-sizing:border-box;font-family:宋體;">，調(diào)整</span><span style="box-sizing:border-box;font-family:'Times New Roman';">R1</span><span style="box-sizing:border-box;font-family:宋體;">的電阻值，可以使檢流計(jì)指零，這時(shí)變比</span><span style="box-sizing:border-box;font-family:'Times New Roman';">K</span><span style="box-sizing:border-box;font-family:宋體;">可按下式計(jì)算：</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"> <img width="96" height="96" alt="" src="http://y1.yzimgs.com/ComFolder/486823/201404/%E5%9B%BE%E7%89%872.png?imageView2/2/format/webp/" style="box-sizing:border-box;vertical-align:middle;height:auto;"></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"> </span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;text-align:center;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">圖二</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;text-indent:31.5pt;"> <span style="box-sizing:border-box;"><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><img width="140" height="29" alt="" src="http://y1.yzimgs.com/ComFolder/486823/201404/%E5%9B%BE%E7%89%873.png?imageView2/2/format/webp/" style="box-sizing:border-box;vertical-align:middle;height:auto;"></span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">………………（<span style="box-sizing:border-box;font-family:'Times New Roman';">1</span><span style="box-sizing:border-box;font-family:宋體;">）</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:22pt;text-indent:24.1pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">為了在測(cè)量變化的同時(shí)讀出這臺(tái)試品的變化誤差，只要在電阻<span style="box-sizing:border-box;font-family:'Times New Roman';">R1</span><span style="box-sizing:border-box;font-family:宋體;">和</span><span style="box-sizing:border-box;font-family:'Times New Roman';">R2</span><span style="box-sizing:border-box;font-family:宋體;">之間串入一個(gè)滑盤式電阻</span><span style="box-sizing:border-box;font-family:'Times New Roman';">R3</span><span style="box-sizing:border-box;font-family:宋體;">（見圖三），設(shè)滑桿和電阻</span><span style="box-sizing:border-box;font-family:'Times New Roman';">R3</span><span style="box-sizing:border-box;font-family:宋體;">的接觸點(diǎn)為</span><span style="box-sizing:border-box;font-family:'Times New Roman';">C</span><span style="box-sizing:border-box;font-family:宋體;">。<img width="96" height="96" alt="" src="http://y1.yzimgs.com/ComFolder/486823/201404/%E5%9B%BE%E7%89%874.png?imageView2/2/format/webp/" style="box-sizing:border-box;vertical-align:middle;height:auto;"></span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;text-indent:86.94pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;text-align:center;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">圖三</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:22pt;text-indent:24.1pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">我們先假定<img width="117" height="24" alt="" src="http://y1.yzimgs.com/ComFolder/486823/201404/%E5%9B%BE%E7%89%876.png?imageView2/2/format/webp/" style="box-sizing:border-box;vertical-align:middle;height:auto;"></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">，如果試品的電壓比是完全符合標(biāo)準(zhǔn)變化的<span style="box-sizing:border-box;font-family:'Times New Roman';">K</span><span style="box-sizing:border-box;font-family:宋體;">，調(diào)整</span><span style="box-sizing:border-box;font-family:'Times New Roman';">R1</span><span style="box-sizing:border-box;font-family:宋體;">使檢流計(jì)指零，變壓比可按下式計(jì)算：</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:22pt;text-indent:24.1pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><img width="194" height="32" alt="" src="http://y1.yzimgs.com/ComFolder/486823/201404/%E5%9B%BE%E7%89%875.png?imageView2/2/format/webp/" style="box-sizing:border-box;vertical-align:middle;height:auto;"> ………………（<span style="box-sizing:border-box;font-family:'Times New Roman';">3</span><span style="box-sizing:border-box;font-family:宋體;">）</span></span><span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:22pt;text-indent:24.1pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">如果被試品的變化不是標(biāo)準(zhǔn)變化<span style="box-sizing:border-box;font-family:'Times New Roman';">K</span><span style="box-sizing:border-box;font-family:宋體;">，而是帶有一定誤差的</span><span style="box-sizing:border-box;font-family:'Times New Roman';">K</span><span style="box-sizing:border-box;font-family:宋體;">，審我們不必去改變</span><span style="box-sizing:border-box;font-family:'Times New Roman';">R1</span><span style="box-sizing:border-box;font-family:宋體;">的電阻，只須改變滑桿</span><span style="box-sizing:border-box;font-family:'Times New Roman';">C</span><span style="box-sizing:border-box;font-family:宋體;">點(diǎn)的位置。如果試品的誤差在一定的范圍內(nèi)，則在</span><span style="box-sizing:border-box;font-family:'Times New Roman';">R3</span><span style="box-sizing:border-box;font-family:宋體;">上一定可以找到使檢流計(jì)指零的那一點(diǎn)，這時(shí)試品的實(shí)測(cè)變比</span><span style="box-sizing:border-box;font-family:'Times New Roman';">K</span></span><span style="box-sizing:border-box;font-size:10.5pt;">′</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">須用下式計(jì)算：</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:22pt;text-indent:63pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">K</span><span style="box-sizing:border-box;font-size:10.5pt;">′<img width="69" height="31" alt="" src="http://y1.yzimgs.com/ComFolder/486823/201404/%E5%9B%BE%E7%89%877.png?imageView2/2/format/webp/" style="box-sizing:border-box;vertical-align:middle;height:auto;"></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"> ………………（<span style="box-sizing:border-box;font-family:'Times New Roman';">3</span><span style="box-sizing:border-box;font-family:宋體;">）</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:22pt;text-indent:24pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">△<span style="box-sizing:border-box;font-family:'Times New Roman';">R</span><span style="box-sizing:border-box;font-family:宋體;">為</span><span style="box-sizing:border-box;font-family:'Times New Roman';">C</span><span style="box-sizing:border-box;font-family:宋體;">點(diǎn)，偏離</span><span style="box-sizing:border-box;font-family:'Times New Roman';">R3</span><span style="box-sizing:border-box;font-family:宋體;">中點(diǎn)的電阻值。</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:22pt;text-indent:24pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">試品的變化誤差（<span style="box-sizing:border-box;font-family:'Times New Roman';">%0</span><span style="box-sizing:border-box;font-family:宋體;">可用下式計(jì)算：</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;text-indent:24pt;"> <span style="box-sizing:border-box;font-size:12pt;font-family:宋體;"> </span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"> <img width="184" height="77" alt="" src="http://y1.yzimgs.com/ComFolder/486823/201404/%E5%9B%BE%E7%89%878.png?imageView2/2/format/webp/" style="box-sizing:border-box;vertical-align:middle;height:auto;"></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:22pt;text-indent:52.5pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">∵<img width="97" height="24" alt="" src="http://y1.yzimgs.com/ComFolder/486823/201404/%E5%9B%BE%E7%89%879.png?imageView2/2/format/webp/" style="box-sizing:border-box;vertical-align:middle;height:auto;"></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"> </span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:22pt;text-indent:52.5pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">∴<img width="67" height="28" alt="" src="http://y1.yzimgs.com/ComFolder/486823/201404/%E5%9B%BE%E7%89%8710.png?imageView2/2/format/webp/" style="box-sizing:border-box;vertical-align:middle;height:auto;"></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">………………（<span style="box-sizing:border-box;font-family:'Times New Roman';">4</span><span style="box-sizing:border-box;font-family:宋體;">）</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:22pt;text-indent:21pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">為了方便我們?nèi)?img width="124" height="24" alt="" src="http://y1.yzimgs.com/ComFolder/486823/201404/%E5%9B%BE%E7%89%8711.png?imageView2/2/format/webp/" style="box-sizing:border-box;vertical-align:middle;height:auto;"></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:22pt;text-indent:21pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">若*大百分誤差ε<span style="box-sizing:border-box;font-family:'Times New Roman';">=</span><span style="box-sizing:border-box;font-family:宋體;">±</span><span style="box-sizing:border-box;font-family:'Times New Roman';">2</span><span style="box-sizing:border-box;font-family:宋體;">，那么<img width="205" height="28" alt="" src="http://y1.yzimgs.com/ComFolder/486823/201404/%E5%9B%BE%E7%89%8712.png?imageView2/2/format/webp/" style="box-sizing:border-box;vertical-align:middle;height:auto;"></span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:22pt;text-indent:21pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">即誤差在±<span style="box-sizing:border-box;font-family:'Times New Roman';">2%</span><span style="box-sizing:border-box;font-family:宋體;">范圍變動(dòng)時(shí)，滑桿</span><span style="box-sizing:border-box;font-family:'Times New Roman';">C</span><span style="box-sizing:border-box;font-family:宋體;">點(diǎn)須在離</span><span style="box-sizing:border-box;font-family:'Times New Roman';">R3</span><span style="box-sizing:border-box;font-family:宋體;">中點(diǎn)±</span><span style="box-sizing:border-box;font-family:'Times New Roman';">20</span><span style="box-sizing:border-box;font-family:宋體;">Ω的范圍內(nèi)變動(dòng)。如果從</span><span style="box-sizing:border-box;font-family:'Times New Roman';">X</span><span style="box-sizing:border-box;font-family:宋體;">點(diǎn)算起，那么，</span><span style="box-sizing:border-box;font-family:'Times New Roman';">R</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;vertical-align:sub;">XC</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">=890~1020<span style="box-sizing:border-box;font-family:宋體;">Ω。</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:22pt;text-indent:10pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">當(dāng)滑桿<span style="box-sizing:border-box;font-family:'Times New Roman';">C</span><span style="box-sizing:border-box;font-family:宋體;">點(diǎn)在</span><span style="box-sizing:border-box;font-family:'Times New Roman';">R3</span><span style="box-sizing:border-box;font-family:宋體;">上滑動(dòng)時(shí)，</span><span style="box-sizing:border-box;font-family:'Times New Roman';">C</span><span style="box-sizing:border-box;font-family:宋體;">點(diǎn)的電位也將相應(yīng)變化，在一定的范圍可和</span><span style="box-sizing:border-box;font-family:'Times New Roman';">U2</span><span style="box-sizing:border-box;font-family:宋體;">達(dá)到平衡。</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:22pt;text-indent:24.1pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">從<span style="box-sizing:border-box;font-family:'Times New Roman';">C</span><span style="box-sizing:border-box;font-family:宋體;">點(diǎn)和</span><span style="box-sizing:border-box;font-family:'Times New Roman';">a</span><span style="box-sizing:border-box;font-family:宋體;">點(diǎn)引出的信號(hào)接入檢流計(jì)。</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:22pt;text-indent:24.1pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"> </o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:22pt;text-indent:24.1pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">四、結(jié)構(gòu)簡(jiǎn)稱</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:22pt;text-indent:24.1pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">1<span style="box-sizing:border-box;font-family:宋體;">、變化</span><span style="box-sizing:border-box;font-family:'Times New Roman';">K</span><span style="box-sizing:border-box;font-family:宋體;">值十電電阻盤：</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:22pt;text-indent:24.1pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">采用五只十進(jìn)位轉(zhuǎn)換開關(guān)，電刷和接觸片用復(fù)銀合金制成，因此轉(zhuǎn)動(dòng)力矩小，定位正確，開關(guān)接觸電阻和變差都很小。</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:18pt;text-indent:24.1pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">第<span style="box-sizing:border-box;font-family:'Times New Roman';">1</span><span style="box-sizing:border-box;font-family:宋體;">盤：×</span><span style="box-sizing:border-box;font-family:'Times New Roman';">10</span><span style="box-sizing:border-box;font-family:宋體;">實(shí)際電阻為</span><span style="box-sizing:border-box;font-family:'Times New Roman';">10</span><span style="box-sizing:border-box;font-family:宋體;">×</span><span style="box-sizing:border-box;font-family:'Times New Roman';">10000</span><span style="box-sizing:border-box;font-family:宋體;">歐姆，繞于板形瓷片上密封于塑料外殼內(nèi)。材料為</span><span style="box-sizing:border-box;font-family:'Times New Roman';">45#</span><span style="box-sizing:border-box;font-family:宋體;">國(guó)產(chǎn)漆包錳銅線。電阻元件的調(diào)整誤差為</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">±</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">0.02%<span style="box-sizing:border-box;font-family:宋體;">。</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:18pt;text-indent:24.1pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">第<span style="box-sizing:border-box;font-family:'Times New Roman';">2</span><span style="box-sizing:border-box;font-family:宋體;">盤：×</span><span style="box-sizing:border-box;font-family:'Times New Roman';">1</span><span style="box-sizing:border-box;font-family:宋體;">實(shí)際電阻為</span><span style="box-sizing:border-box;font-family:'Times New Roman';">9</span><span style="box-sizing:border-box;font-family:宋體;">×</span><span style="box-sizing:border-box;font-family:'Times New Roman';">1000</span><span style="box-sizing:border-box;font-family:宋體;">歐姆，繞于瓷管上。材料為</span><span style="box-sizing:border-box;font-family:'Times New Roman';">41#</span><span style="box-sizing:border-box;font-family:宋體;">國(guó)產(chǎn)漆包錳銅線。電阻元件的調(diào)整誤差為</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">±</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">0.02%<span style="box-sizing:border-box;font-family:宋體;">。</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:18pt;text-indent:24.1pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">第<span style="box-sizing:border-box;font-family:'Times New Roman';">3</span><span style="box-sizing:border-box;font-family:宋體;">盤：×</span><span style="box-sizing:border-box;font-family:'Times New Roman';">0.1</span><span style="box-sizing:border-box;font-family:宋體;">實(shí)際電阻為</span><span style="box-sizing:border-box;font-family:'Times New Roman';">10</span><span style="box-sizing:border-box;font-family:宋體;">×</span><span style="box-sizing:border-box;font-family:'Times New Roman';">100</span><span style="box-sizing:border-box;font-family:宋體;">歐姆。材料為</span><span style="box-sizing:border-box;font-family:'Times New Roman';">35#</span><span style="box-sizing:border-box;font-family:宋體;">國(guó)產(chǎn)漆包錳銅線。電阻元件的調(diào)整誤差為</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">±</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">0.02%<span style="box-sizing:border-box;font-family:宋體;">。</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:18pt;text-indent:24.1pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">第<span style="box-sizing:border-box;font-family:'Times New Roman';">4</span><span style="box-sizing:border-box;font-family:宋體;">盤：×</span><span style="box-sizing:border-box;font-family:'Times New Roman';">0.01</span><span style="box-sizing:border-box;font-family:宋體;">實(shí)際電阻為</span><span style="box-sizing:border-box;font-family:'Times New Roman';">9</span><span style="box-sizing:border-box;font-family:宋體;">×</span><span style="box-sizing:border-box;font-family:'Times New Roman';">10</span><span style="box-sizing:border-box;font-family:宋體;">歐姆。材料為</span><span style="box-sizing:border-box;font-family:'Times New Roman';">26#</span><span style="box-sizing:border-box;font-family:宋體;">國(guó)產(chǎn)漆包錳銅線。電阻元件的調(diào)整誤差為</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">±</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">0.05%<span style="box-sizing:border-box;font-family:宋體;">。</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:18pt;text-indent:24.1pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">第<span style="box-sizing:border-box;font-family:'Times New Roman';">5</span><span style="box-sizing:border-box;font-family:宋體;">盤：×</span><span style="box-sizing:border-box;font-family:'Times New Roman';">0.001</span><span style="box-sizing:border-box;font-family:宋體;">實(shí)際電阻為</span><span style="box-sizing:border-box;font-family:'Times New Roman';">10</span><span style="box-sizing:border-box;font-family:宋體;">×</span><span style="box-sizing:border-box;font-family:'Times New Roman';">1</span><span style="box-sizing:border-box;font-family:宋體;">歐姆。材料為</span><span style="box-sizing:border-box;font-family:'Times New Roman';">20#</span><span style="box-sizing:border-box;font-family:宋體;">國(guó)產(chǎn)漆包錳銅線。電阻元件的調(diào)整誤差為</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">±</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">0.05%<span style="box-sizing:border-box;font-family:宋體;">。</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:18pt;text-indent:24.1pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">2<span style="box-sizing:border-box;font-family:宋體;">、滑盤電阻：</span><span style="box-sizing:border-box;font-family:'Times New Roman';">R3=40</span><span style="box-sizing:border-box;font-family:宋體;">歐姆。</span><span style="box-sizing:border-box;font-family:'Times New Roman';">R1</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">ˊ</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">為并聯(lián)電阻，電阻值在<span style="box-sizing:border-box;font-family:'Times New Roman';">70</span><span style="box-sizing:border-box;font-family:宋體;">歐姆左右。</span><span style="box-sizing:border-box;font-family:'Times New Roman';">R2</span><span style="box-sizing:border-box;font-family:宋體;">中心線用</span></span><span style="box-sizing:border-box;"><img src="file://C:/Users/ADMINI~1/AppData/Local/Temp/ksohtml/wps_clip_image-21224.png" width="38" height="16" alt="" style="box-sizing:border-box;vertical-align:middle;height:auto;"></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">漆包紫銅線，外層用</span><span style="box-sizing:border-box;"><img src="file://C:/Users/ADMINI~1/AppData/Local/Temp/ksohtml/wps_clip_image-4547.png" width="34" height="18" alt="" style="box-sizing:border-box;vertical-align:middle;height:auto;"></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">漆包康銅線。</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:18pt;text-indent:24.1pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">電阻值約在<span style="box-sizing:border-box;font-family:'Times New Roman';">100</span><span style="box-sizing:border-box;font-family:宋體;">歐姆左右，然后并聯(lián)成</span><span style="box-sizing:border-box;font-family:'Times New Roman';">RMN</span><span style="box-sizing:border-box;font-family:宋體;">為</span><span style="box-sizing:border-box;font-family:'Times New Roman';">40</span><span style="box-sizing:border-box;font-family:宋體;">歐姆，如圖</span><span style="box-sizing:border-box;font-family:'Times New Roman';">4</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:28px;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"> </span><span style="box-sizing:border-box;font-size:42pt;font-family:宋體;"> <img width="96" height="96" alt="" src="http://y1.yzimgs.com/ComFolder/486823/201404/%E5%9B%BE%E7%89%8713.png?imageView2/2/format/webp/" style="box-sizing:border-box;vertical-align:middle;height:auto;"></span><span style="box-sizing:border-box;font-size:42pt;font-family:宋體;"> </span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">圖四</span><span style="box-sizing:border-box;font-size:42pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:13pt;text-indent:24.1pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">3<span style="box-sizing:border-box;font-family:宋體;">、標(biāo)準(zhǔn)電阻，</span><span style="box-sizing:border-box;font-family:'Times New Roman';">R2=980</span><span style="box-sizing:border-box;font-family:宋體;">歐姆。</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:22pt;text-indent:21pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">采用<span style="box-sizing:border-box;font-family:'Times New Roman';">40#</span><span style="box-sizing:border-box;font-family:宋體;">國(guó)產(chǎn)漆包錳銅線繞制，調(diào)整誤差為</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">±</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">0.05%<span style="box-sizing:border-box;font-family:宋體;">，根據(jù)電橋特性，</span><span style="box-sizing:border-box;font-family:'Times New Roman';">R2</span><span style="box-sizing:border-box;font-family:宋體;">電阻值直接影響電橋精度，因此</span><span style="box-sizing:border-box;font-family:'Times New Roman';">R2</span><span style="box-sizing:border-box;font-family:宋體;">的精度以高為佳，并密封在鋁外殼內(nèi)。</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:22pt;text-indent:24pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">以上一些電阻元件都是雙線無感繞制。</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:22pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">4<span style="box-sizing:border-box;font-family:宋體;">、面板排列和外型尺寸如圖</span><span style="box-sizing:border-box;font-family:'Times New Roman';">5</span><span style="box-sizing:border-box;font-family:宋體;">所示。</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;text-indent:47.25pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><img alt="" src="http://y1.yzimgs.com/ComFolder/486823/201404/%E5%9B%BE%E7%89%8715.png?imageView2/2/format/webp/" style="box-sizing:border-box;vertical-align:middle;height:273px;width:580px;"><br style="box-sizing:border-box;"> 圖五</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:17pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">1<span style="box-sizing:border-box;font-family:宋體;">、調(diào)壓器。 </span><span style="box-sizing:border-box;font-family:'Times New Roman';">11</span><span style="box-sizing:border-box;font-family:宋體;">、三相變換“極性”開關(guān)</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:17pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">2<span style="box-sizing:border-box;font-family:宋體;">、</span><span style="box-sizing:border-box;font-family:'Times New Roman';">A.B.C.a.b.c.</span><span style="box-sizing:border-box;font-family:宋體;">接線柱。 </span><span style="box-sizing:border-box;font-family:'Times New Roman';">12</span><span style="box-sizing:border-box;font-family:宋體;">、三相變換“三相變換”開關(guān)</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:17pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">3<span style="box-sizing:border-box;font-family:宋體;">、放大器保險(xiǎn)絲。 </span><span style="box-sizing:border-box;font-family:'Times New Roman';">13</span><span style="box-sizing:border-box;font-family:宋體;">、三相變換“短接”開關(guān)。</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:17pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">4<span style="box-sizing:border-box;font-family:宋體;">、試驗(yàn)電壓保險(xiǎn)絲。 </span><span style="box-sizing:border-box;font-family:'Times New Roman';">14</span><span style="box-sizing:border-box;font-family:宋體;">、變壓比誤差測(cè)量盤。</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:17pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">5<span style="box-sizing:border-box;font-family:宋體;">、放大器靈敏度調(diào)節(jié)。 </span><span style="box-sizing:border-box;font-family:'Times New Roman';">15</span><span style="box-sizing:border-box;font-family:宋體;">、變比</span><span style="box-sizing:border-box;font-family:'Times New Roman';">K</span><span style="box-sizing:border-box;font-family:宋體;">值測(cè)量盤。</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:17pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">6<span style="box-sizing:border-box;font-family:宋體;">、電壓表。 </span><span style="box-sizing:border-box;font-family:'Times New Roman';">16</span><span style="box-sizing:border-box;font-family:宋體;">、放大器開關(guān)。 </span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:17pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">7<span style="box-sizing:border-box;font-family:宋體;">、放大器電源指示燈。 </span><span style="box-sizing:border-box;font-family:'Times New Roman';">17</span><span style="box-sizing:border-box;font-family:宋體;">、試驗(yàn)電壓</span><span style="box-sizing:border-box;font-family:'Times New Roman';">250</span><span style="box-sizing:border-box;font-family:宋體;">伏，</span><span style="box-sizing:border-box;font-family:'Times New Roman';">550</span><span style="box-sizing:border-box;font-family:宋體;">伏開關(guān)</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:17pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">8<span style="box-sizing:border-box;font-family:宋體;">、</span><span style="box-sizing:border-box;font-family:'Times New Roman';">A.a.</span><span style="box-sizing:border-box;font-family:宋體;">誤接指示燈。 </span><span style="box-sizing:border-box;font-family:'Times New Roman';">18</span><span style="box-sizing:border-box;font-family:宋體;">、電壓表開關(guān)</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:17pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">9<span style="box-sizing:border-box;font-family:宋體;">、電子檢流計(jì)。 </span><span style="box-sizing:border-box;font-family:'Times New Roman';">19</span><span style="box-sizing:border-box;font-family:宋體;">、外殼。</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:17pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">10<span style="box-sizing:border-box;font-family:宋體;">、放大器零位調(diào)節(jié)。</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:18pt;text-indent:15.75pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">五、使用方法</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:18pt;text-indent:24pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">1<span style="box-sizing:border-box;font-family:宋體;">、在使用本電橋之前必須已知試品的極性或接線組別。</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:18pt;text-indent:24pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">2<span style="box-sizing:border-box;font-family:宋體;">、把試品的額定</span><span style="box-sizing:border-box;font-family:'Times New Roman';">K</span><span style="box-sizing:border-box;font-family:宋體;">值**的計(jì)算出來，取有效值</span><span style="box-sizing:border-box;font-family:'Times New Roman';">4</span><span style="box-sizing:border-box;font-family:宋體;">位，計(jì)算不應(yīng)用計(jì)算尺。應(yīng)用筆算或計(jì)算機(jī)，可按下式計(jì)算：</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:18pt;text-indent:24pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">1/1<span style="box-sizing:border-box;font-family:宋體;">，</span><span style="box-sizing:border-box;font-family:'Times New Roman';">Y/Y</span><span style="box-sizing:border-box;font-family:宋體;">，</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">△/△接法的變壓器：</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:18pt;text-indent:24pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:18pt;text-indent:24pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><img width="127" height="24" alt="" src="http://y1.yzimgs.com/ComFolder/486823/201404/%E5%9B%BE%E7%89%8716.png?imageView2/2/format/webp/" style="box-sizing:border-box;vertical-align:middle;height:auto;">Y/</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">△接法的變壓器：</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:18pt;text-indent:24pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:18pt;text-indent:24pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><img width="143" height="31" alt="" src="http://y1.yzimgs.com/ComFolder/486823/201404/%E5%9B%BE%E7%89%8717.png?imageView2/2/format/webp/" style="box-sizing:border-box;vertical-align:middle;height:auto;">式中：</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:18pt;text-indent:24pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">KL<span style="box-sizing:border-box;font-family:宋體;">——線電壓比值</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:18pt;text-indent:21pt;"> <span style="box-sizing:border-box;"><img src="file://C:/Users/ADMINI~1/AppData/Local/Temp/ksohtml/wps_clip_image-25046.png" width="32" height="20" alt="" style="box-sizing:border-box;vertical-align:middle;height:auto;"></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">——相電壓比值</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:18pt;text-indent:21pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">U1<span style="box-sizing:border-box;font-family:宋體;">——高壓側(cè)電壓（伏）</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:18pt;text-indent:21pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">U2<span style="box-sizing:border-box;font-family:宋體;">——低電壓側(cè)電壓（伏）</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:18pt;text-indent:21pt;"> <span style="box-sizing:border-box;"><img src="file://C:/Users/ADMINI~1/AppData/Local/Temp/ksohtml/wps_clip_image-21507.png" width="20" height="20" alt="" style="box-sizing:border-box;vertical-align:middle;height:auto;"></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">——取<span style="box-sizing:border-box;font-family:'Times New Roman';">1.732</span><span style="box-sizing:border-box;font-family:宋體;">。</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:18pt;text-indent:21pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">3<span style="box-sizing:border-box;font-family:宋體;">、電橋上的</span><span style="box-sizing:border-box;font-family:'Times New Roman';">ABC</span><span style="box-sizing:border-box;font-family:宋體;">，</span><span style="box-sizing:border-box;font-family:'Times New Roman';">abc</span><span style="box-sizing:border-box;font-family:宋體;">和試品的</span><span style="box-sizing:border-box;font-family:'Times New Roman';">ABC,abc</span><span style="box-sizing:border-box;font-family:宋體;">連接。如單相試品，則</span><span style="box-sizing:border-box;font-family:'Times New Roman';">B</span><span style="box-sizing:border-box;font-family:宋體;">和</span><span style="box-sizing:border-box;font-family:'Times New Roman';">b</span><span style="box-sizing:border-box;font-family:宋體;">代</span><span style="box-sizing:border-box;font-family:'Times New Roman';">X</span><span style="box-sizing:border-box;font-family:宋體;">和</span><span style="box-sizing:border-box;font-family:'Times New Roman';">x</span><span style="box-sizing:border-box;font-family:宋體;">，</span><span style="box-sizing:border-box;font-family:'Times New Roman';">C</span><span style="box-sizing:border-box;font-family:宋體;">及</span><span style="box-sizing:border-box;font-family:'Times New Roman';">c</span><span style="box-sizing:border-box;font-family:宋體;">空接。</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:18pt;text-indent:5.25pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">4<span style="box-sizing:border-box;font-family:宋體;">、電橋上的</span><span style="box-sizing:border-box;font-family:'Times New Roman';">K</span><span style="box-sizing:border-box;font-family:宋體;">值放在按第</span><span style="box-sizing:border-box;font-family:'Times New Roman';">2</span><span style="box-sizing:border-box;font-family:宋體;">條計(jì)算出來的數(shù)值，應(yīng)按下方法：</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:18pt;text-indent:26.25pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">如<span style="box-sizing:border-box;font-family:'Times New Roman';">K=13.51</span><span style="box-sizing:border-box;font-family:宋體;">則電橋</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:18pt;text-indent:21pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"> K=1<span style="box-sizing:border-box;font-family:宋體;">×</span><span style="box-sizing:border-box;font-family:'Times New Roman';">10 3</span><span style="box-sizing:border-box;font-family:宋體;">×</span><span style="box-sizing:border-box;font-family:'Times New Roman';">1 4</span><span style="box-sizing:border-box;font-family:宋體;">×</span><span style="box-sizing:border-box;font-family:'Times New Roman';">0.1 10</span><span style="box-sizing:border-box;font-family:宋體;">×</span><span style="box-sizing:border-box;font-family:'Times New Roman';">0.01 10</span><span style="box-sizing:border-box;font-family:宋體;">×</span><span style="box-sizing:border-box;font-family:'Times New Roman';">0.001</span><span style="box-sizing:border-box;font-family:宋體;">依次類推。</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:18pt;text-indent:21pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">5<span style="box-sizing:border-box;font-family:宋體;">、三相變換應(yīng)先放在</span><span style="box-sizing:border-box;font-family:'Times New Roman';">AB/ab</span><span style="box-sizing:border-box;font-family:宋體;">位上，如</span><span style="box-sizing:border-box;font-family:'Times New Roman';">Y/Y</span><span style="box-sizing:border-box;font-family:宋體;">和△</span><span style="box-sizing:border-box;font-family:'Times New Roman';">/</span><span style="box-sizing:border-box;font-family:宋體;">△接法的試品短接開關(guān)放在“</span><span style="box-sizing:border-box;font-family:'Times New Roman';">0</span><span style="box-sizing:border-box;font-family:宋體;">”上。</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:18pt;text-indent:21pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">如<span style="box-sizing:border-box;font-family:'Times New Roman';">Y/</span><span style="box-sizing:border-box;font-family:宋體;">△—</span><span style="box-sizing:border-box;font-family:'Times New Roman';">11</span><span style="box-sizing:border-box;font-family:宋體;">和△</span><span style="box-sizing:border-box;font-family:'Times New Roman';">/Y</span><span style="box-sizing:border-box;font-family:宋體;">—</span><span style="box-sizing:border-box;font-family:'Times New Roman';">11</span><span style="box-sizing:border-box;font-family:宋體;">接法的試品短接開關(guān)應(yīng)按表一放置。</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:18pt;text-indent:21pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"> </o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:18pt;text-indent:21pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"> </o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:18pt;text-indent:21pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"> </o:p></span> </p> <table style="box-sizing:border-box;border-spacing:0px;table-layout:inherit;width:285.45pt;padding:0pt 5.4pt;margin-left:14.4pt;"> <tbody style="box-sizing:border-box;"> <tr style="box-sizing:border-box;height:13.7pt;"> <td valign="middle" width="182" colspan="4" style="box-sizing:border-box;padding:0pt 5.4pt;border-width:0.5pt;border-style:solid;border-color:#000000;width:136.8pt;"> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;text-align:center;line-height:17pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">對(duì)于<span style="box-sizing:border-box;font-family:'Times New Roman';">Y/</span><span style="box-sizing:border-box;font-family:宋體;">△—</span><span style="box-sizing:border-box;font-family:'Times New Roman';">11</span><span style="box-sizing:border-box;font-family:宋體;">連接按下表</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> </td> <td valign="middle" width="198" colspan="4" style="box-sizing:border-box;padding:0pt 5.4pt;border-width:0.5pt 0.5pt 0.5pt medium;border-style:solid solid solid none;border-top-color:#000000;border-right-color:#000000;width:148.65pt;border-bottom-color:#000000;border-left-color:initial;"> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;text-align:center;line-height:17pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">對(duì)于△<span style="box-sizing:border-box;font-family:'Times New Roman';">/Y</span><span style="box-sizing:border-box;font-family:宋體;">—</span><span style="box-sizing:border-box;font-family:'Times New Roman';">11</span><span style="box-sizing:border-box;font-family:宋體;">連接按下表</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> </td> </tr> <tr style="box-sizing:border-box;height:27.35pt;"> <td valign="middle" width="28" style="box-sizing:border-box;padding:0pt 5.4pt;border-width:medium 0.5pt 0.5pt;border-style:none solid solid;border-top-color:initial;border-right-color:#000000;width:21.3pt;border-bottom-color:#000000;border-left-color:#000000;"> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;text-align:center;line-height:17pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">測(cè)量</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> </td> <td valign="middle" width="51" style="box-sizing:border-box;padding:0pt 5.4pt;border-width:medium 0.5pt 0.5pt medium;border-style:none solid solid none;border-top-color:initial;border-right-color:#000000;width:38.75pt;border-bottom-color:#000000;border-left-color:initial;"> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;text-align:center;line-height:17pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">AB/ab</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> </td> <td valign="middle" width="51" style="box-sizing:border-box;padding:0pt 5.4pt;border-width:0.5pt 0.5pt 0.5pt medium;border-style:solid solid solid none;border-top-color:#000000;border-right-color:#000000;width:38.35pt;border-bottom-color:#000000;border-left-color:initial;"> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;text-align:center;line-height:17pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">BC/bc</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> </td> <td valign="middle" width="51" style="box-sizing:border-box;padding:0pt 5.4pt;border-width:0.5pt 0.5pt 0.5pt medium;border-style:solid solid solid none;border-top-color:#000000;border-right-color:#000000;width:38.4pt;border-bottom-color:#000000;border-left-color:initial;"> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;text-align:center;line-height:17pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">CA/ca</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> </td> <td valign="middle" width="32" style="box-sizing:border-box;padding:0pt 5.4pt;border-width:0.5pt 0.5pt 0.5pt medium;border-style:solid solid solid none;border-top-color:#000000;border-right-color:#000000;width:24.25pt;border-bottom-color:#000000;border-left-color:initial;"> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;text-align:center;line-height:17pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">測(cè)量</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> </td> <td valign="middle" width="52" style="box-sizing:border-box;padding:0pt 5.4pt;border-width:0.5pt 0.5pt 0.5pt medium;border-style:solid solid solid none;border-top-color:#000000;border-right-color:#000000;width:39.05pt;border-bottom-color:#000000;border-left-color:initial;"> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;text-align:center;line-height:17pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">AB/ab</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> </td> <td valign="middle" width="51" style="box-sizing:border-box;padding:0pt 5.4pt;border-width:0.5pt 0.5pt 0.5pt medium;border-style:solid solid solid none;border-top-color:#000000;border-right-color:#000000;width:38.6pt;border-bottom-color:#000000;border-left-color:initial;"> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;text-align:center;line-height:17pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">BC/bc</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> </td> <td valign="middle" width="62" style="box-sizing:border-box;padding:0pt 5.4pt;border-width:0.5pt 0.5pt 0.5pt medium;border-style:solid solid solid none;border-top-color:#000000;border-right-color:#000000;width:46.75pt;border-bottom-color:#000000;border-left-color:initial;"> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;text-align:center;line-height:17pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">CA/ca</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> </td> </tr> <tr style="box-sizing:border-box;height:28.25pt;"> <td valign="middle" width="28" style="box-sizing:border-box;padding:0pt 5.4pt;border-width:medium 0.5pt 0.5pt;border-style:none solid solid;border-top-color:initial;border-right-color:#000000;width:21.3pt;border-bottom-color:#000000;border-left-color:#000000;"> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;text-align:center;line-height:17pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">短接</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> </td> <td valign="middle" width="51" style="box-sizing:border-box;padding:0pt 5.4pt;border-width:medium 0.5pt 0.5pt medium;border-style:none solid solid none;border-top-color:initial;border-right-color:#000000;width:38.75pt;border-bottom-color:#000000;border-left-color:initial;"> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;text-align:center;line-height:17pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">bc</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> </td> <td valign="middle" width="51" style="box-sizing:border-box;padding:0pt 5.4pt;border-width:medium 0.5pt 0.5pt medium;border-style:none solid solid none;border-top-color:initial;border-right-color:#000000;width:38.35pt;border-bottom-color:#000000;border-left-color:initial;"> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;text-align:center;line-height:17pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">ac</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> </td> <td valign="middle" width="51" style="box-sizing:border-box;padding:0pt 5.4pt;border-width:medium 0.5pt 0.5pt medium;border-style:none solid solid none;border-top-color:initial;border-right-color:#000000;width:38.4pt;border-bottom-color:#000000;border-left-color:initial;"> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;text-align:center;line-height:17pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">ab</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> </td> <td valign="middle" width="32" style="box-sizing:border-box;padding:0pt 5.4pt;border-width:medium 0.5pt 0.5pt medium;border-style:none solid solid none;border-top-color:initial;border-right-color:#000000;width:24.25pt;border-bottom-color:#000000;border-left-color:initial;"> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;text-align:center;line-height:17pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">短接</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> </td> <td valign="middle" width="52" style="box-sizing:border-box;padding:0pt 5.4pt;border-width:medium 0.5pt 0.5pt medium;border-style:none solid solid none;border-top-color:initial;border-right-color:#000000;width:39.05pt;border-bottom-color:#000000;border-left-color:initial;"> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;text-align:center;line-height:17pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">CA</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> </td> <td valign="middle" width="51" style="box-sizing:border-box;padding:0pt 5.4pt;border-width:medium 0.5pt 0.5pt medium;border-style:none solid solid none;border-top-color:initial;border-right-color:#000000;width:38.6pt;border-bottom-color:#000000;border-left-color:initial;"> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;text-align:center;line-height:17pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">AB</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> </td> <td valign="middle" width="62" style="box-sizing:border-box;padding:0pt 5.4pt;border-width:medium 0.5pt 0.5pt medium;border-style:none solid solid none;border-top-color:initial;border-right-color:#000000;width:46.75pt;border-bottom-color:#000000;border-left-color:initial;"> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;text-align:center;line-height:17pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">BC</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> </td> </tr> </tbody> </table> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:17pt;text-indent:21pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">6<span style="box-sizing:border-box;font-family:宋體;">、三相變換“極性”開關(guān)按放位置一般情況下，當(dāng)三相變壓器鐘時(shí)序是：</span><span style="box-sizing:border-box;font-family:'Times New Roman';">1</span><span style="box-sizing:border-box;font-family:宋體;">、</span><span style="box-sizing:border-box;font-family:'Times New Roman';">3</span><span style="box-sizing:border-box;font-family:宋體;">、</span><span style="box-sizing:border-box;font-family:'Times New Roman';">4</span><span style="box-sizing:border-box;font-family:宋體;">、</span><span style="box-sizing:border-box;font-family:'Times New Roman';">8</span><span style="box-sizing:border-box;font-family:宋體;">、</span><span style="box-sizing:border-box;font-family:'Times New Roman';">11</span><span style="box-sizing:border-box;font-family:宋體;">、</span><span style="box-sizing:border-box;font-family:'Times New Roman';">0</span><span style="box-sizing:border-box;font-family:宋體;">組是為“—”極性，是：</span><span style="box-sizing:border-box;font-family:'Times New Roman';">2</span><span style="box-sizing:border-box;font-family:宋體;">、</span><span style="box-sizing:border-box;font-family:'Times New Roman';">5</span><span style="box-sizing:border-box;font-family:宋體;">、</span><span style="box-sizing:border-box;font-family:'Times New Roman';">6</span><span style="box-sizing:border-box;font-family:宋體;">、</span><span style="box-sizing:border-box;font-family:'Times New Roman';">7</span><span style="box-sizing:border-box;font-family:宋體;">、</span><span style="box-sizing:border-box;font-family:'Times New Roman';">9</span><span style="box-sizing:border-box;font-family:宋體;">、</span><span style="box-sizing:border-box;font-family:'Times New Roman';">10</span><span style="box-sizing:border-box;font-family:宋體;">組時(shí)為“</span><span style="box-sizing:border-box;font-family:'Times New Roman';">+</span><span style="box-sizing:border-box;font-family:宋體;">”極性。其它開關(guān)都放在關(guān)或“</span><span style="box-sizing:border-box;font-family:'Times New Roman';">0</span><span style="box-sizing:border-box;font-family:宋體;">”。該條僅供測(cè)試者參考。</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:18pt;text-indent:21pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">7<span style="box-sizing:border-box;font-family:宋體;">、插上電源注意核對(duì)相線及中心線是否搞錯(cuò)，被試品</span><span style="box-sizing:border-box;font-family:'Times New Roman';">K</span><span style="box-sizing:border-box;font-family:宋體;">值在</span><span style="box-sizing:border-box;font-family:'Times New Roman';">50</span><span style="box-sizing:border-box;font-family:宋體;">以下者試驗(yàn)電壓開關(guān)放在</span><span style="box-sizing:border-box;font-family:'Times New Roman';">250</span><span style="box-sizing:border-box;font-family:宋體;">伏上，</span><span style="box-sizing:border-box;font-family:'Times New Roman';">50</span><span style="box-sizing:border-box;font-family:宋體;">以上者試驗(yàn)電壓開關(guān)放在</span><span style="box-sizing:border-box;font-family:'Times New Roman';">600</span><span style="box-sizing:border-box;font-family:宋體;">伏一檔上。但調(diào)壓器都應(yīng)放在“零”位，接通</span><span style="box-sizing:border-box;font-family:'Times New Roman';">K1</span><span style="box-sizing:border-box;font-family:宋體;">放大器開關(guān)，紅燈示亮，使放大器預(yù)熱</span><span style="box-sizing:border-box;font-family:'Times New Roman';">1</span><span style="box-sizing:border-box;font-family:宋體;">分鐘左右，然后把靈敏度電旋鈕旋至*大，調(diào)整零位，使μ</span><span style="box-sizing:border-box;font-family:'Times New Roman';">A</span><span style="box-sizing:border-box;font-family:宋體;">表指中心“</span><span style="box-sizing:border-box;font-family:'Times New Roman';">0</span><span style="box-sizing:border-box;font-family:宋體;">”位，再適當(dāng)降低靈敏度。</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:18pt;text-indent:21pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">8<span style="box-sizing:border-box;font-family:宋體;">、打開電壓表開關(guān)</span><span style="box-sizing:border-box;font-family:'Times New Roman';">K</span><span style="box-sizing:border-box;font-family:宋體;">逐漸調(diào)節(jié)，調(diào)壓器使電壓表指示在</span><span style="box-sizing:border-box;font-family:'Times New Roman';">5</span><span style="box-sizing:border-box;font-family:宋體;">伏，同時(shí)必須注意μ</span><span style="box-sizing:border-box;font-family:'Times New Roman';">A</span><span style="box-sizing:border-box;font-family:宋體;">表指針不應(yīng)超過滿度。</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:18pt;text-indent:21pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">如果超過時(shí)可以適當(dāng)降低放大器的靈敏度，再超過時(shí)則應(yīng)調(diào)節(jié)調(diào)壓器到電壓表指示在“<span style="box-sizing:border-box;font-family:'Times New Roman';">0</span><span style="box-sizing:border-box;font-family:宋體;">”位，關(guān)閉電源開關(guān)，仔細(xì)檢查連接線極性和變比讀數(shù)，查出原因，待糾正后再行送電測(cè)試。</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:18pt;text-indent:21pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">9<span style="box-sizing:border-box;font-family:宋體;">、調(diào)整誤差盤及靈敏度至*大，使μ</span><span style="box-sizing:border-box;font-family:'Times New Roman';">A</span><span style="box-sizing:border-box;font-family:宋體;">表指零，然后關(guān)閉電壓表</span><span style="box-sizing:border-box;font-family:'Times New Roman';">K3</span><span style="box-sizing:border-box;font-family:宋體;">作精調(diào)，此時(shí)誤差盤上約讀數(shù)，即為試品在這變化下的誤差，并作記錄。</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:18pt;text-indent:21pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">10<span style="box-sizing:border-box;font-family:宋體;">、如事先不知道試品的變化，可將誤差盤指零，輸入一個(gè)較低的試驗(yàn)電壓，略增靈敏度，調(diào)整</span><span style="box-sizing:border-box;font-family:'Times New Roman';">K</span><span style="box-sizing:border-box;font-family:宋體;">值使“μ</span><span style="box-sizing:border-box;font-family:'Times New Roman';">A</span><span style="box-sizing:border-box;font-family:宋體;">”表指零。再增加靈敏度，升高試驗(yàn)電壓，使電壓表維持在</span><span style="box-sizing:border-box;font-family:'Times New Roman';">5</span><span style="box-sizing:border-box;font-family:宋體;">伏。繼續(xù)調(diào)整</span><span style="box-sizing:border-box;font-family:'Times New Roman';">K</span><span style="box-sizing:border-box;font-family:宋體;">值旋鈕。當(dāng)靈敏度*大時(shí)“μ</span><span style="box-sizing:border-box;font-family:'Times New Roman';">A</span><span style="box-sizing:border-box;font-family:宋體;">”表指零，靈敏度降至零時(shí)指針不動(dòng)，即可切斷試驗(yàn)電源。這時(shí)，</span><span style="box-sizing:border-box;font-family:'Times New Roman';">K</span><span style="box-sizing:border-box;font-family:宋體;">值旋鈕讀數(shù)即為試品實(shí)際變比。</span><span style="box-sizing:border-box;font-family:'Times New Roman';">K</span><span style="box-sizing:border-box;font-family:宋體;">值記錄讀數(shù)以靈敏度*大時(shí)值。</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:18pt;text-indent:21pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">11<span style="box-sizing:border-box;font-family:宋體;">、降低電壓關(guān)閉試驗(yàn)電壓，進(jìn)行三相變換如</span><span style="box-sizing:border-box;font-family:'Times New Roman';">BC/bc</span><span style="box-sizing:border-box;font-family:宋體;">或</span><span style="box-sizing:border-box;font-family:'Times New Roman';">CA/ca</span><span style="box-sizing:border-box;font-family:宋體;">。</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:18pt;text-indent:21pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">12<span style="box-sizing:border-box;font-family:宋體;">、再按第</span><span style="box-sizing:border-box;font-family:'Times New Roman';">8</span><span style="box-sizing:border-box;font-family:宋體;">條和</span><span style="box-sizing:border-box;font-family:'Times New Roman';">9</span><span style="box-sizing:border-box;font-family:宋體;">條進(jìn)行之。</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:18pt;text-indent:21pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">13<span style="box-sizing:border-box;font-family:宋體;">、測(cè)試完畢，將所有開關(guān)放在關(guān)閉位置或“</span><span style="box-sizing:border-box;font-family:'Times New Roman';">0</span><span style="box-sizing:border-box;font-family:宋體;">”位，待下次再使用。</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:18pt;text-indent:21pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">六、注意事項(xiàng)及維護(hù)保養(yǎng)</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:18pt;text-indent:21pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">1<span style="box-sizing:border-box;font-family:宋體;">、試驗(yàn)電壓電大不得超過</span><span style="box-sizing:border-box;font-family:'Times New Roman';">7</span><span style="box-sizing:border-box;font-family:宋體;">伏以免電橋過載燒壞。</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:18pt;text-indent:21pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">2<span style="box-sizing:border-box;font-family:宋體;">、使用三相變換器中任意一開關(guān)不能帶電進(jìn)行，必須關(guān)閉試驗(yàn)電壓。</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:18pt;text-indent:21pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">3<span style="box-sizing:border-box;font-family:宋體;">、使用時(shí)對(duì)連接線等應(yīng)做好標(biāo)記，連接線</span><span style="box-sizing:border-box;font-family:'Times New Roman';">A</span><span style="box-sizing:border-box;font-family:宋體;">和</span><span style="box-sizing:border-box;font-family:'Times New Roman';">a</span><span style="box-sizing:border-box;font-family:宋體;">絕不能對(duì)調(diào)，否則將有高壓電進(jìn)入橋體，使放電管起輝放電（</span><span style="box-sizing:border-box;font-family:'Times New Roman';">Aa</span><span style="box-sizing:border-box;font-family:宋體;">誤接指示燈示亮），放電管（</span><span style="box-sizing:border-box;font-family:'Times New Roman';">R350</span><span style="box-sizing:border-box;font-family:宋體;">）在正常測(cè)量時(shí)，放電管跨接在</span><span style="box-sizing:border-box;font-family:'Times New Roman';">a</span><span style="box-sizing:border-box;font-family:宋體;">、</span><span style="box-sizing:border-box;font-family:'Times New Roman';">X</span><span style="box-sizing:border-box;font-family:宋體;">側(cè)，兩端只有</span><span style="box-sizing:border-box;font-family:'Times New Roman';">5</span><span style="box-sizing:border-box;font-family:宋體;">伏電壓不能起輝，當(dāng)</span><span style="box-sizing:border-box;font-family:'Times New Roman';">A</span><span style="box-sizing:border-box;font-family:宋體;">、</span><span style="box-sizing:border-box;font-family:'Times New Roman';">a</span><span style="box-sizing:border-box;font-family:宋體;">對(duì)調(diào)時(shí)，試驗(yàn)電壓就由</span><span style="box-sizing:border-box;font-family:'Times New Roman';">a</span><span style="box-sizing:border-box;font-family:宋體;">、</span><span style="box-sizing:border-box;font-family:'Times New Roman';">x</span><span style="box-sizing:border-box;font-family:宋體;">側(cè)輸入，這樣試品的高壓側(cè)</span><span style="box-sizing:border-box;font-family:'Times New Roman';">A</span><span style="box-sizing:border-box;font-family:宋體;">、</span><span style="box-sizing:border-box;font-family:'Times New Roman';">x</span><span style="box-sizing:border-box;font-family:宋體;">端就產(chǎn)生了高壓電，被誤接在</span><span style="box-sizing:border-box;font-family:'Times New Roman';">A</span><span style="box-sizing:border-box;font-family:宋體;">、</span><span style="box-sizing:border-box;font-family:'Times New Roman';">x</span><span style="box-sizing:border-box;font-family:宋體;">兩端的放電管立即放電，試品高壓側(cè)</span><span style="box-sizing:border-box;font-family:'Times New Roman';">A</span><span style="box-sizing:border-box;font-family:宋體;">、</span><span style="box-sizing:border-box;font-family:'Times New Roman';">x</span><span style="box-sizing:border-box;font-family:宋體;">端形成短路，使低壓端電流激增，開關(guān)</span><span style="box-sizing:border-box;font-family:'Times New Roman';">K2</span><span style="box-sizing:border-box;font-family:宋體;">前面的</span><span style="box-sizing:border-box;font-family:'Times New Roman';">0.5</span><span style="box-sizing:border-box;font-family:宋體;">安培熔斷絲即被燒斷。防止了事故的擴(kuò)大。</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:18pt;text-indent:21pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">另外<span style="box-sizing:border-box;font-family:'Times New Roman';">Aa</span><span style="box-sizing:border-box;font-family:宋體;">端誤接后，調(diào)壓器剛起始，電壓表開關(guān)</span><span style="box-sizing:border-box;font-family:'Times New Roman';">K1</span><span style="box-sizing:border-box;font-family:宋體;">如果在閉合位置，就激增超過滿度，此時(shí)應(yīng)立即降低調(diào)壓器，關(guān)閉試驗(yàn)電壓，檢查接線正確性。</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:18pt;text-indent:21pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"> </o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:21pt;text-indent:21pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">4<span style="box-sizing:border-box;font-family:宋體;">、作準(zhǔn)確測(cè)量時(shí)應(yīng)關(guān)閉</span><span style="box-sizing:border-box;font-family:'Times New Roman';">K3</span><span style="box-sizing:border-box;font-family:宋體;">，即切斷電壓表，否則對(duì)誤差讀數(shù)有</span><span style="box-sizing:border-box;font-family:'Times New Roman';">+0.005~+0.02%</span><span style="box-sizing:border-box;font-family:宋體;">的影響。</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:21pt;text-indent:21pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">5<span style="box-sizing:border-box;font-family:宋體;">、電壓表所指示的是被試變壓器的次級(jí)電壓，一般應(yīng)在</span><span style="box-sizing:border-box;font-family:'Times New Roman';">5</span><span style="box-sizing:border-box;font-family:宋體;">伏以內(nèi)。這是根據(jù)標(biāo)準(zhǔn)電阻的能承受的電流而定。實(shí)際上從調(diào)壓器輸入產(chǎn)品一次側(cè)和</span><span style="box-sizing:border-box;font-family:'Times New Roman';">K</span><span style="box-sizing:border-box;font-family:宋體;">值的十進(jìn)電阻的兩端電壓也可用下式計(jì)算：</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:21pt;text-indent:21pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">UN=K<span style="box-sizing:border-box;font-family:宋體;">×</span><span style="box-sizing:border-box;font-family:'Times New Roman';">5</span><span style="box-sizing:border-box;font-family:宋體;">，如</span><span style="box-sizing:border-box;font-family:'Times New Roman';">K=25</span><span style="box-sizing:border-box;font-family:宋體;">則從調(diào)壓器輸出的電壓為</span><span style="box-sizing:border-box;font-family:'Times New Roman';">125</span><span style="box-sizing:border-box;font-family:宋體;">伏，這個(gè)電壓太低，會(huì)影響指零儀表的靈敏度（當(dāng)平衡時(shí)，在這個(gè)電壓下相當(dāng)于十進(jìn)電阻箱內(nèi)通過</span><span style="box-sizing:border-box;font-family:'Times New Roman';">5</span><span style="box-sizing:border-box;font-family:宋體;">毫安，當(dāng)誤差為</span><span style="box-sizing:border-box;font-family:'Times New Roman';">0.01% </span><span style="box-sizing:border-box;font-family:宋體;">輸入放大器的信號(hào)電壓為</span><span style="box-sizing:border-box;font-family:'Times New Roman';">0.5</span><span style="box-sizing:border-box;font-family:宋體;">毫安）。試驗(yàn)電壓太高，會(huì)使標(biāo)準(zhǔn)電阻過熱超差，甚至燒毀。</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:21pt;text-indent:21pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">6<span style="box-sizing:border-box;font-family:宋體;">、在試驗(yàn)低電壓變壓器時(shí)，由于激磁電流較大，開關(guān)</span><span style="box-sizing:border-box;font-family:'Times New Roman';">K2</span><span style="box-sizing:border-box;font-family:宋體;">熔斷絲容量不足，試驗(yàn)電壓可由外接調(diào)壓器直接輸入試品</span><span style="box-sizing:border-box;font-family:'Times New Roman';">A</span><span style="box-sizing:border-box;font-family:宋體;">，</span><span style="box-sizing:border-box;font-family:'Times New Roman';">x</span><span style="box-sizing:border-box;font-family:宋體;">端，此時(shí)開關(guān)</span><span style="box-sizing:border-box;font-family:'Times New Roman';">K2</span><span style="box-sizing:border-box;font-family:宋體;">應(yīng)處于斷開狀態(tài)。</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:21pt;text-indent:21pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">7<span style="box-sizing:border-box;font-family:宋體;">、如遇到誤差超過</span><span style="box-sizing:border-box;font-family:'Times New Roman';">+2%</span><span style="box-sizing:border-box;font-family:宋體;">時(shí)，可將誤差盤調(diào)整在“</span><span style="box-sizing:border-box;font-family:'Times New Roman';">0</span><span style="box-sizing:border-box;font-family:宋體;">”上，用調(diào)整電橋上</span><span style="box-sizing:border-box;font-family:'Times New Roman';">K</span><span style="box-sizing:border-box;font-family:宋體;">值使電橋平衡。</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:21pt;text-indent:21pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">8<span style="box-sizing:border-box;font-family:宋體;">、如遇到</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">△/Y0或Y0/△的變壓器，則應(yīng)以相變比測(cè)量為準(zhǔn)。</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:21pt;text-indent:21pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">9、電橋應(yīng)經(jīng)常保持清潔，防止塵埃侵入，電橋經(jīng)常使用一段時(shí)期后，應(yīng)定期刷除電阻開關(guān)接觸塵污，以保持接觸良好。</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:21pt;text-indent:21pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">10、電橋經(jīng)使用后應(yīng)定期計(jì)量，其方法（一）可用0.2級(jí)標(biāo)準(zhǔn)電壓互感器核對(duì)，（二）作電阻分壓法計(jì)量之。</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;text-indent:89.25pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:16pt;text-indent:31.5pt;"> <span style="box-sizing:border-box;font-size:10.5pt;"><img width="96" height="96" alt="" src="http://y1.yzimgs.com/ComFolder/486823/201404/%E5%9B%BE%E7%89%8718.png?imageView2/2/format/webp/" style="box-sizing:border-box;vertical-align:middle;height:auto;"><br style="box-sizing:border-box;"> 1</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">1<span style="box-sizing:border-box;font-family:宋體;">、在用戶遵守技術(shù)條件所規(guī)定的使用、運(yùn)輸及儲(chǔ)藏的條件下，從交貨之日起一年內(nèi)，因制造質(zhì)量不佳而發(fā)生損壞或不能正常</span></span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:16pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">工作時(shí)，制造廠應(yīng)免費(fèi)為用戶修理產(chǎn)品，如無法修好時(shí)，則應(yīng)免費(fèi)給用戶更換部件。</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:16pt;text-indent:31.5pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">七、儀器成套性</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:16pt;text-indent:26.25pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">隨同</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">產(chǎn)品供應(yīng)的文件有：</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:16pt;text-indent:31.5pt;"> <span style="box-sizing:border-box;font-size:10.5pt;">1</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">、使用說明書</span><span style="box-sizing:border-box;font-size:10.5pt;"> 2</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">、產(chǎn)品合格證</span><span style="box-sizing:border-box;font-size:10.5pt;"> 3</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">、裝箱單</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:16pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"> 八、技術(shù)服務(wù)</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"><o:p style="box-sizing:border-box;"></o:p></span> </p> <p class="p0" style="box-sizing:border-box;margin-top:0pt;margin-bottom:0pt;color:#444444;font-family:"Times New Roman";font-size:14px;background-color:#FFFFFF;line-height:16pt;"> <span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;"> </span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">用戶在使用本儀器時(shí)，有任何</span><span style="box-sizing:border-box;font-size:10.5pt;font-family:宋體;">技術(shù)性問題或需供儀器配件等，可直接與本公司聯(lián)系。</span> </p> </div> <div 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