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<p><strong>回路電阻測試儀概述</strong></p><p>目前，接觸電阻的測量電力系統中普遍采用常規的QJ44型雙臂直流電橋，而這類(lèi)電橋的測試電流僅m*，難以發(fā)現回路導體截面積減少的缺陷，在測量高壓開(kāi)關(guān)導電回路接觸電阻時(shí)，由于受觸頭之間油膜和氧化層的影響，測量值偏大若干倍，無(wú)法真實(shí)的反映接觸電阻值。為此，電力部標準SD301—88《交流500KV電力設備交接和預防性試驗規程》和新版《電力設備預防性試驗規程》作出對斷路器、隔離開(kāi)關(guān)接觸電阻的測量電流不小于直流100A的規定，以確保試驗結果準確。</p><p><strong>HLY-100A回路電阻測試儀</strong>是根據中華人民共和國電力執行標準DL/T845.4-2004，采用高頻開(kāi)關(guān)電源技術(shù)和數字電路技術(shù)相結合設計而成。它適用于開(kāi)關(guān)控制設備回路電阻的測量。其測試電流采用國家標準推薦的直流100A?？稍陔娏?00A的情況下直接測得回路電阻，并用數字顯示出來(lái)。該儀器測量準確、性能穩定，符合電力、供電部門(mén)現場(chǎng)高壓開(kāi)關(guān)維修和高壓開(kāi)關(guān)廠(chǎng)回路電阻測試的要求。</p><p><strong>回路電阻測試儀用途</strong></p><p><strong>HLY-100A回路電阻測試儀</strong>適用于高壓開(kāi)關(guān)接觸電阻（回路電阻）的高精度測量，同樣適用于其它需要大電流、微電阻測量的場(chǎng)合。</p><p><strong>性能特點(diǎn)</strong></p><p>1、大電流：采用電源技術(shù)，能長(cháng)時(shí)間連續輸出大電流，克服了脈沖式電源瞬間電流的弊端，可以有效的擊穿開(kāi)關(guān)觸頭氧化膜，得到良好的測試結果。<br/>2、抗干擾能力強：在嚴重干擾條件下，液晶屏后一位數據能穩定在±1個(gè)字范圍內，讀數穩定，重復性好。<br/>3、使用壽命長(cháng)：全部采用高精度電阻，有效的消除環(huán)境溫度對測量結果的影響，同時(shí)接插件的使用增強了抗振性能。<br/>4、攜帶方便：體積小、重量輕。</p><div id="io4m0ui" class="tabledivclass" style="width: 99%; float: left;"><table class="CS_table" style="background-color: rgb(255, 255, 255); border-collapse: collapse; border-color: rgb(204, 204, 204); border-image: initial; border-style: solid; border-width: 2px 0px 0px 1px; color: rgb(51, 51, 51); empty-cells: show; max-width: 748px;" microsoft="" font-size:="" font-stretch:="" line-height:="" list-style-type:="" margin:="" padding:="" width:="" max-width:="" align="left"><tbody><tr class="firstRow"><td style="border-color:rgb(204, 204, 204); text-align:center; width:130px">測量范圍</td><td style="border-color:rgb(204, 204, 204)">1～1999μΩ</td></tr><tr><td style="border-color:rgb(204, 204, 204); text-align:center; width:130px">分辨力</td><td style="border-color:rgb(204, 204, 204)">1μΩ</td></tr><tr><td style="border-color:rgb(204, 204, 204); text-align:center; width:130px">測試電流</td><td style="border-color:rgb(204, 204, 204)">DC 100A</td></tr><tr><td style="border-color:rgb(204, 204, 204); text-align:center; width:130px">測量精度</td><td style="border-color:rgb(204, 204, 204)">0.5%±1d</td></tr><tr><td style="border-color:rgb(204, 204, 204); text-align:center; width:130px">顯示方式</td><td style="border-color:rgb(204, 204, 204)">電流：三位半LCD；電阻：三位半LCD</td></tr><tr><td style="border-color:rgb(204, 204, 204); text-align:center; width:130px">工作電源</td><td style="border-color:rgb(204, 204, 204)">AC220V±10%，50Hz</td></tr><tr><td style="border-color:rgb(204, 204, 204); text-align:center; width:130px">工作環(huán)境</td><td style="border-color:rgb(204, 204, 204)">溫度:-10℃～40℃；濕度：≤80%RH</td></tr><tr><td style="border-color:rgb(204, 204, 204); text-align:center; width:130px">體積</td><td style="border-color:rgb(204, 204, 204)">300×270×200mm<sup>3</sup></td></tr><tr><td style="border-color:rgb(204, 204, 204); text-align:center; width:130px">重量</td><td style="border-color:rgb(204, 204, 204)">5kg（不含附件）</td></tr></tbody></table></div><p><br/></p><p><br/></p> <div id="yi6k0ii" class="pagetb"> <p> 上一條：<a 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