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padding: 0px; color: rgb(59, 59, 59); font-family: 宋體; font-size: 14px;"> 武漢市合眾電氣HLY系列回路電阻測試儀，是按照電力試驗(yàn)規(guī)程要求、為滿足電力部門現(xiàn)場試驗(yàn)需求研制生產(chǎn)的新一代回路電阻測試儀測試儀器。該儀器應(yīng)用直流壓降法測量高壓開關(guān)的接觸電阻和回路電阻，采用國外高頻開關(guān)電源技術(shù)為儀器提供恒定100A/200A直流的測試電流。測量時(shí)，只需合上儀器電源，選擇好電流檔位，按下測量鍵，便可將回路電流及被測設(shè)備的回路電阻自動(dòng)測出，并顯示結(jié)果。由于采用恒流開關(guān)電源技術(shù)及數(shù)字濾波技術(shù)，因此保證了測量精度。</p><p style="margin: 0px; padding: 0px; color: rgb(59, 59, 59); font-family: 宋體; font-size: 14px; text-align: center;"><img alt="" src="http://img74.chem17.com/9/20200929/637369651394914248606.jpg" style="width:800px" /></p><p style="margin: 0px; padding: 0px; color: rgb(59, 59, 59); font-family: 宋體; font-size: 14px;"> 回路電阻測試儀電流采用國家標(biāo)準(zhǔn)GB736所推薦的100A直流，可在100A電流的情況下測得被試品的電阻值。能長時(shí)間連續(xù)輸出大電流，克服了脈沖式電源瞬間電流的弊端，可以有效的擊穿開關(guān)觸頭氧化膜，得到良好的測試結(jié)果。HLY-301回路(接觸)電阻測試儀，具有體積小、重量輕、抗干擾能力強(qiáng)、精度高、操作方便、保護(hù)功能完善等特點(diǎn)。</p><p style="margin: 0px; padding: 0px; color: rgb(59, 59, 59); font-family: 宋體; font-size: 14px;"> 目前電力檢測試驗(yàn)行業(yè)內(nèi)市面上所售回路電阻測試儀配備的測試配件有兩種：測試夾和測試鉗。測試夾由于采用四線獨(dú)立加夾法，不僅接線繁瑣而且所夾測試線有一定的夾持順序可以參考儀器隨帶的使用說明書。</p><p style="margin: 0px; padding: 0px; color: rgb(59, 59, 59); font-family: 宋體; font-size: 14px;"> 而測試鉗采用線鉗合一方式，不僅操作簡單而且加持測試線時(shí)無需考慮夾持順序，因此武漢市合眾電氣力生產(chǎn)的HLY系列回路電阻測試儀早已淘汰測試夾而采用測試鉗方式，這一點(diǎn)請購買回路電阻測試儀的朋友務(wù)必主意。如你所購回路電阻測試儀是合眾電氣品牌的，測試時(shí)用儀器標(biāo)配的測試鉗夾在開關(guān)的兩端(無需考慮夾持順序)，按下測試按鈕，所測接觸電阻或回路電阻就顯示在儀器的微歐表上，回路電阻測試就是如此簡單!</p><p style="margin: 0px; padding: 0px; color: rgb(59, 59, 59); font-family: 宋體; font-size: 14px;"> 提醒注意：如果夾持點(diǎn)有油垢、銹蝕、灰塵等隔離雜質(zhì)，一定要在夾持前處理干凈，否則所測接觸電阻是不正確的。有的在試驗(yàn)時(shí)反映儀器老是顯示“1”即超量程，就是這個(gè)原因。如果現(xiàn)場沒有處理措施，為暫時(shí)應(yīng)急也可采用旋轉(zhuǎn)測試鉗，利用測試鉗牙口磨擦方式解決測試鉗與夾持點(diǎn)接觸問題。</p> <div id="iqaqewgi6e" class="clear"></div> </div> <div id="iqaqewgi6e" class="article"> <p>上一篇：<a href="/Article-2391899.html">變壓器直流電阻測試儀的選型參考方法</a></p> <p>下一篇：<a href="/Article-2386857.html">油耐壓測試儀的用途和特點(diǎn)是什么？</a></p> </div> <div 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