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<div>　　數(shù)字式兆歐表工作原理：由中大規(guī)模集成電路組成。本表輸出功率大，短路電流值高，輸出電壓等級多(有四個電壓等級)。工作原理為由機(jī)內(nèi)電池作為電源經(jīng)DC/DC變換產(chǎn)生的直流高壓由E極出經(jīng)被測試品到達(dá)L極，從而產(chǎn)生一個從E到L極的電流，經(jīng)過I/V變換經(jīng)除法器完成運(yùn)算直接將被測的絕緣電阻值由LCD顯示出來。.<br /> </div><div>　　它是是電力、郵電、通信、機(jī)電安裝和維修以及利用電力作為工業(yè)動力或能源的工業(yè)企業(yè)部門常用而*的儀表。它適用于測量各種絕緣材料的電阻值及變壓器、電機(jī)、電纜及電器設(shè)備等的絕緣電阻。<br /> </div><div>　　數(shù)字式兆歐表有以下特點：<br /> </div><div>　　1.輸出功率大、帶載能力強(qiáng)，抗干擾的能力強(qiáng)。<br /> </div><div>　　本表外殼由高強(qiáng)度鋁合金組成，機(jī)內(nèi)設(shè)有等電位保護(hù)環(huán)和四階有源低通濾波器，對外界工頻及強(qiáng)電磁場可起到有效的屏蔽作用。對容性試品測量由于輸出短路電流大于1.6mA，很容易使測試電壓迅速上升到輸出電壓的額定值。對于低阻值測量由于采用比例法設(shè)計故電壓下落并不影響測試精度。<br /> </div><div>　　2.本儀表不需人力作功，由電池供電，量程可自動轉(zhuǎn)換。一目了然的面板操作和LCD顯示使得測量十分方便和迅捷。<br /> </div><div>　　3.本表輸出短路電流可直接測量，不需帶載測量進(jìn)行估算。</div> <div class="eqckvv83f" id="news_sx"><li id="eqckvv83f" class="sx_left">上一篇：<a href="/Article-446715.html">數(shù)字式兆歐表的使用說明和注意事項</a> <br />下一篇：<a href="/Article-444531.html">康登供應(yīng)電力測試線部分規(guī)格展示</a></li></div> </div> 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