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class="inside_rnewtil">絕緣電阻測試儀常見故障及修理</h1> <div id="1571n5fppxr7" class="inside_rnewtime">點(diǎn)擊次數(shù)：49 更新時(shí)間：2024-11-19</div> <div id="1571n5fppxr7" class="inside_rnewcon"><p><span style="font-size: 16px; font-family: 宋體, SimSun;">絕緣電阻測試儀常見故障及修理</span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;"><br/></span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;">　　一、端鈕“E"、“L"開路時(shí)，搖動(dòng)手搖發(fā)電機(jī)指針指不到“∝"。</span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;"><br/></span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;">　　首先拆下提手，旋下緊固螺絲，用電烙鐵焊下發(fā)電機(jī)彈簧引線，把測量機(jī)構(gòu)與發(fā)電機(jī)分開。</span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;"><br/></span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;">　　1?檢查測量機(jī)構(gòu)：測量機(jī)構(gòu)主要有交叉式線圈(以ZSZC25型表為例)、導(dǎo)流絲、電壓、電流回路電阻等組成。</span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;"><br/></span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;">　?、偈紫扔^察導(dǎo)流絲是否變形，因?qū)Я鹘z變形，使得殘余力矩增大，特別是在“∝"附近，由于磁場較弱，定位力矩小，容易產(chǎn)生誤差。如是，應(yīng)重新調(diào)整或更換導(dǎo)流絲。更換的導(dǎo)流絲應(yīng)符合下列要求：導(dǎo)流絲無折傷，導(dǎo)流絲上、中、下三根應(yīng)平行，不能上翹或下垂。用手撥動(dòng)指針從“0"到“∝"，導(dǎo)流絲不能與轉(zhuǎn)軸或其它物相碰。</span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;">②用萬用表測電壓線圈是否斷路或短路。如是，重繞或更換。</span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;"><br/></span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;">　?、蹤z查電壓回路電阻是否增大。如是，重新調(diào)整電壓回路電阻。</span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;"><br/></span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;">　　2?檢查發(fā)電機(jī)：①測量發(fā)電機(jī)輸出電壓：手搖發(fā)電機(jī)，用靜電電壓表或高壓數(shù)字電壓表測其輸出電壓，看是否與其標(biāo)定的額定電壓相一致，允許有±10％的誤差。如發(fā)電機(jī)輸出電壓過低，檢查發(fā)電機(jī)繞組是否斷路或短路。如是，更換或重繞。</span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;"><br/></span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;">　?、跈z查整流是否擊穿短路。如是，更換。</span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;"><br/></span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;">　?、蹤z查發(fā)電機(jī)并聯(lián)電容是否損壞。如是，更換。</span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;"><br/></span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;">　　④檢查調(diào)速器的螺絲彈簧是否過松。如是，重新調(diào)整彈簧，使彈簧拉緊。</span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;"><br/></span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;">　　二、在“E"、“L"短路時(shí)，指針指不到“0"。</span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;">①若指針指不到“0"，可用鑷子扳動(dòng)指針來調(diào)整。</span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;"><br/></span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;">　?、跈z查電流回路電阻是否增大。如是，重新調(diào)整電阻。</span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;"><br/></span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;">　?、蹤z查電流線圈是否短路或斷路。如是，重繞或更換。</span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;"><br/></span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;">　?、軝z查導(dǎo)流絲是否與其它物相碰或變形很大。如是，重新更換。</span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;"><br/></span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;">　　三、指針轉(zhuǎn)動(dòng)不暢或轉(zhuǎn)動(dòng)時(shí)有卡滯現(xiàn)象</span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;"><br/></span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;">　?、贆z查軸尖是否磨損。如是，更換軸尖。</span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;"><br/></span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;">　　②寶石軸承與軸尖配合太緊，造成間隙過小。如是，應(yīng)重新調(diào)整軸承與軸尖之間的間隙。</span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;"><br/></span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;">　?、蹆x表可動(dòng)線圈變形與內(nèi)部鐵芯相碰。如是，重新修整線框。</span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;"><br/></span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;">　?、軐?dǎo)流絲變形，導(dǎo)致指針在轉(zhuǎn)動(dòng)時(shí)與某些固定部分相碰。如是，重新調(diào)整導(dǎo)流絲。</span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;"><br/></span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;">　?、菘蓜?dòng)線圈與磁性鐵芯上的鐵屑相碰。如是，將帶有磁性的細(xì)鋼絲插入間隙中，利用鋼絲被磁化的原理吸出鐵屑。</span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;"><br/></span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;">　　四、在“∝"和“0"點(diǎn)位置正常，但有部分刻度點(diǎn)誤差較大。</span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;"><br/></span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;">　?、贆C(jī)械平衡不好。如是，重新調(diào)整平衡。方法是：將儀表不通電靜止在某一位置，然后向前后、左右傾斜30°來調(diào)平衡錘。</span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;"><br/></span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;">　?、谥睾笇?dǎo)流絲，并伸長或縮短導(dǎo)流絲，利用其殘余力矩來改變儀表的刻度特性。</span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;"><br/></span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;">　?、廴缫陨戏椒ㄕ{(diào)整不起作用，可以重劃刻度線來解決。</span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;"><br/></span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;"> </span></p><p style="text-align: center"><img style="max-width: 800px; max-height: 300%; width: 471px; height: 322px;" src="https://img54.chem17.com/9/20241119/638676026609168990198.jpg" title="10KV絕緣電阻測試儀.jpg" alt="10KV絕緣電阻測試儀.jpg" width="471" height="322"/></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;"></span><br/></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;"><br/></span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;"> 絕緣電阻測試儀又稱搖表，它主要用于高壓或低壓電氣線路及電氣設(shè)備的絕緣電阻測定。它具有攜帶方便，測量時(shí)不需其它輔助設(shè)備，可直接從表盤讀取讀數(shù)等特點(diǎn)。</span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;">使用前檢查</span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;"><br/></span></p><p><span style="font-size: 16px; font-family: 宋體, SimSun;">　　絕緣電阻表在使用前，應(yīng)首先把其放在水平位置上，將端鈕“E"、“L"開路，以額定轉(zhuǎn)速120r/min或150r/min的速度搖動(dòng)手搖發(fā)電機(jī)，觀察指針是否在無窮大(∝)位置，然后將“E"、“L"短路，以額定轉(zhuǎn)速手搖發(fā)電機(jī)，看指針是否指零。同時(shí)應(yīng)檢查發(fā)電機(jī)轉(zhuǎn)動(dòng)是否靈活，有無抖動(dòng)現(xiàn)象。絕緣電阻表指針有無卡滯現(xiàn)象</span><span>。</span></p><p><br/></p></div> <div id="1571n5fppxr7" class="inside_newsthree"> <p id="newsprev">上一篇：<b class="newsprev"><a href="/Article-3867803.html">數(shù)字兆歐表具有的三大特點(diǎn)</a></b></p> <p id="newsnext">下一篇：<b class="newsnext"><a href="/Article-3863432.html">水內(nèi)冷絕緣電阻測試儀影響電阻或電阻率測試的主要因素</a></b></p> <span><a href="/article.html">返回列表>></a></span> </div> </div> </div> </div> </div>    <div class="1571n5fppxr7" id="z_Footer"> <div id="1571n5fppxr7" class="pz_down"> <div id="1571n5fppxr7" class="w_1200"> <div id="1571n5fppxr7" class="footT"> <div 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