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從電(dian)(dian)(dian)工學(xue)上(shang)說，接觸(chu)器(qi)(qi)是可以(yi)快速切斷(duan)交流與直流主回路(lu)和(he)可頻(pin)繁地(di)接通與大電(dian)(dian)(dian)流控(kong)制電(dian)(dian)(dian)路(lu)的(de)裝置，不僅如此，接觸(chu)器(qi)(qi)在用(yong)于電(dian)(dian)(dian)動機的(de)控(kong)制對象時，還具有低電(dian)(dian)(dian)壓釋放保(bao)護(hu)作用(yong)。接觸(chu)器(qi)(qi)控(kong)制容(rong)量大，適用(yong)于頻(pin)繁操作和(he)遠(yuan)距(ju)離控(kong)制。是自動控(kong)制系統中的(de)重要(yao)元(yuan)件之(zhi)一，微機繼電(dian)(dian)(dian)保(bao)護(hu)測試儀當(dang)中肯定也少不了這一點(dian)。今天(tian)小編May就為大家來(lai)講解(jie)下接觸(chu)器(qi)(qi)都有哪(na)幾類。一、真空接觸(chu)器(qi)(qi)真空接觸(chu)器(qi)(qi)(LC1-V*)其組成(cheng)部分與一般空氣式接觸(chu)器(qi)(qi)相似，不同的(de)是真空接觸(chu)器(qi)(qi)的(de)觸(chu)頭密封在真空滅(mie)弧室中。其特點(dian)是接通/分斷(duan)電(dian)(dian)(dian)流大，額定操作電(dian)(dian)(dian)壓...

直流(liu)電(dian)阻測(ce)試(shi)儀(yi)的(de)性(xing)能(neng)(neng)特點具體說來有以下幾點：1、采用國外進口元器件，軟件設計多重抗干擾程序，測(ce)量結果(guo)準確度(du)高，重復(fu)性(xing)好。2、內附(fu)可充電(dian)電(dian)池組，現場測(ce)試(shi)不(bu)需交(jiao)流(liu)電(dian)源，使(shi)用方(fang)便。3、輸(shu)出充電(dian)電(dian)流(liu)大可達(da)2A，測(ce)試(shi)速(su)度(du)快。4、電(dian)阻測(ce)量范圍為1μΩ-2KΩ，量程廣。5、液晶(jing)顯示(shi)(shi)方(fang)式，可顯示(shi)(shi)測(ce)量電(dian)流(liu)和測(ce)量時間，適(shi)應(ying)各種不(bu)同的(de)工作環境。全部漢字(zi)菜單及操作提(ti)示(shi)(shi)，直觀方(fang)便。6、保護功能(neng)(neng)完善，能(neng)(neng)可靠(kao)保護反(fan)電(dian)勢對儀(yi)器的(de)沖擊(ji)，具有自(zi)動放電(dian)指示(shi)(shi)功能(neng)(neng)。7、采用高速(su)16位A/D轉換器，測(ce)量數據(ju)穩定，重復(fu)性(xing)...

開(kai)(kai)關(guan)(guan)回(hui)路(lu)電(dian)(dian)(dian)阻(zu)測(ce)(ce)試(shi)儀是根(gen)據中華人民共(gong)和(he)國新電(dian)(dian)(dian)力(li)執行標(biao)(biao)準DL/T845.4-2004，采用(yong)(yong)高頻開(kai)(kai)關(guan)(guan)電(dian)(dian)(dian)源技術和(he)數字電(dian)(dian)(dian)路(lu)技術相結合設計而成。它適用(yong)(yong)于開(kai)(kai)關(guan)(guan)控制(zhi)設備回(hui)路(lu)電(dian)(dian)(dian)阻(zu)的(de)測(ce)(ce)量。其測(ce)(ce)試(shi)電(dian)(dian)(dian)流(liu)(liu)采用(yong)(yong)國家(jia)標(biao)(biao)準推薦(jian)的(de)直流(liu)(liu)100A。可(ke)在電(dian)(dian)(dian)流(liu)(liu)100A的(de)情(qing)況(kuang)下(xia)直接測(ce)(ce)得回(hui)路(lu)電(dian)(dian)(dian)阻(zu)，并用(yong)(yong)數字顯示出來。該儀器測(ce)(ce)量準確、性能穩定，符合電(dian)(dian)(dian)力(li)、供(gong)電(dian)(dian)(dian)部門現場(chang)高壓開(kai)(kai)關(guan)(guan)維修和(he)高壓開(kai)(kai)關(guan)(guan)廠回(hui)路(lu)電(dian)(dian)(dian)阻(zu)測(ce)(ce)試(shi)的(de)要求(qiu)。1、大電(dian)(dian)(dian)流(liu)(liu)：采用(yong)(yong)新電(dian)(dian)(dian)源技術，能長時(shi)間連(lian)續輸出大電(dian)(dian)(dian)流(liu)(liu)，克服了脈(mo)沖(chong)式電(dian)(dian)(dian)源瞬間電(dian)(dian)(dian)流(liu)(liu)的(de)弊端，可(ke)以有效(xiao)的(de)擊(ji)穿開(kai)(kai)關(guan)(guan)觸頭氧化膜，得到...

高溫(wen)(wen)的(de)在線測(ce)(ce)溫(wen)(wen)儀(yi)一般(ban)應(ying)用于(yu)鋼廠或(huo)(huo)是加工(gong)爐(lu)附(fu)近，因為(wei)溫(wen)(wen)度(du)(du)高，現場的(de)設備不(bu)(bu)一定都(dou)處于(yu)潔(jie)凈狀態(tai)，所以在使(shi)用在線測(ce)(ce)溫(wen)(wen)儀(yi)中好的(de)結果就是在測(ce)(ce)溫(wen)(wen)儀(yi)外面(mian)加一風冷(leng)套或(huo)(huo)是水冷(leng)套來保護(hu)在線測(ce)(ce)溫(wen)(wen)儀(yi)，如(ru)不(bu)(bu)妥善保護(hu)溫(wen)(wen)度(du)(du)儀(yi)會造(zao)成測(ce)(ce)量(liang)精度(du)(du)下降或(huo)(huo)儀(yi)器損壞。所以要(yao)選擇合適的(de)附(fu)件改善工(gong)作環境。固定式(shi)在線測(ce)(ce)溫(wen)(wen)儀(yi)測(ce)(ce)量(liang)通道及鏡(jing)頭(tou)(tou)清(qing)潔(jie)指示：應(ying)保證測(ce)(ce)量(liang)通道的(de)清(qing)潔(jie)，灰(hui)(hui)塵、煙(yan)塵都(dou)會影響輻射能量(liang)的(de)傳遞，降低(di)測(ce)(ce)量(liang)精度(du)(du)。測(ce)(ce)溫(wen)(wen)儀(yi)光學鏡(jing)頭(tou)(tou)必須保持清(qing)潔(jie)，避免因粘有灰(hui)(hui)塵、煙(yan)塵等污染物而導致(zhi)測(ce)(ce)量(liang)誤差甚至損壞鏡(jing)頭(tou)(tou)，若鏡(jing)頭(tou)(tou)粘有灰(hui)(hui)塵。可用清(qing)潔(jie)的(de)棉簽...

手持電(dian)能質(zhi)量測(ce)量儀5分鐘無操作液(ye)晶顯(xian)示自動(dong)關閉，以(yi)便大程(cheng)度(du)的(de)延(yan)長電(dian)池工作時(shi)(shi)(shi)(shi)間。導電(dian)硅(gui)膠按鍵，手感好、壽命長、設(she)計(ji)(ji)合理、操作方便。內置大容量、高性能鋰離子(zi)充電(dian)電(dian)池，充滿電(dian)連續工作6小時(shi)(shi)(shi)(shi)以(yi)上。體積小、重量輕，便于攜帶，既可(ke)用于現場測(ce)量使用，也(ye)可(ke)用做實(shi)驗室的(de)標準計(ji)(ji)量設(she)備。手持電(dian)能質(zhi)量測(ce)量儀具(ju)備萬年歷、時(shi)(shi)(shi)(shi)鐘功(gong)能，實(shi)時(shi)(shi)(shi)(shi)顯(xian)示日期及時(shi)(shi)(shi)(shi)間。可(ke)在現場檢(jian)測(ce)的(de)同(tong)時(shi)(shi)(shi)(shi)保存(cun)測(ce)試數據(ju)(ju)和結果(guo)，并通(tong)過(guo)串口上傳至計(ji)(ji)算機，通(tong)過(guo)后臺(tai)管理軟件（選配件）實(shi)現數據(ju)(ju)微(wei)機化管理，具(ju)備強大的(de)報表功(gong)能。采(cai)用大屏(ping)幕進口彩色液(ye)晶作為...

傳(chuan)輸(shu)(shu)(shu)(shu)(shu)：電(dian)(dian)(dian)(dian)(dian)(dian)能(neng)(neng)的(de)(de)傳(chuan)輸(shu)(shu)(shu)(shu)(shu)，它和變電(dian)(dian)(dian)(dian)(dian)(dian)、配電(dian)(dian)(dian)(dian)(dian)(dian)、用電(dian)(dian)(dian)(dian)(dian)(dian)一起，構(gou)(gou)成電(dian)(dian)(dian)(dian)(dian)(dian)力系統的(de)(de)整體功能(neng)(neng)。通過輸(shu)(shu)(shu)(shu)(shu)電(dian)(dian)(dian)(dian)(dian)(dian)，把相距甚遠的(de)(de)(可達數千千米)發電(dian)(dian)(dian)(dian)(dian)(dian)廠(chang)和負荷中心(xin)起來，使(shi)電(dian)(dian)(dian)(dian)(dian)(dian)能(neng)(neng)的(de)(de)開發和利用超越(yue)地(di)域的(de)(de)限制。和其他(ta)能(neng)(neng)源的(de)(de)傳(chuan)輸(shu)(shu)(shu)(shu)(shu)(如輸(shu)(shu)(shu)(shu)(shu)煤、輸(shu)(shu)(shu)(shu)(shu)油(you)等)相比，輸(shu)(shu)(shu)(shu)(shu)電(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)損耗小(xiao)、效益(yi)高、靈活(huo)方便、易于(yu)調控、環(huan)境污染(ran)少;輸(shu)(shu)(shu)(shu)(shu)電(dian)(dian)(dian)(dian)(dian)(dian)還可以將不同地(di)點的(de)(de)發電(dian)(dian)(dian)(dian)(dian)(dian)廠(chang)連(lian)接起來，實行峰谷調節。輸(shu)(shu)(shu)(shu)(shu)電(dian)(dian)(dian)(dian)(dian)(dian)是(shi)(shi)電(dian)(dian)(dian)(dian)(dian)(dian)能(neng)(neng)利用*性的(de)(de)重(zhong)要體現(xian)，在現(xian)代(dai)化社會中，它是(shi)(shi)重(zhong)要的(de)(de)能(neng)(neng)源動(dong)脈。輸(shu)(shu)(shu)(shu)(shu)電(dian)(dian)(dian)(dian)(dian)(dian)線(xian)(xian)路(lu)(lu)按(an)結構(gou)(gou)形式可分為架空輸(shu)(shu)(shu)(shu)(shu)電(dian)(dian)(dian)(dian)(dian)(dian)線(xian)(xian)路(lu)(lu)和地(di)下輸(shu)(shu)(shu)(shu)(shu)電(dian)(dian)(dian)(dian)(dian)(dian)線(xian)(xian)路(lu)(lu)。前者由線(xian)(xian)路(lu)(lu)桿塔、導線(xian)(xian)、絕緣子(zi)等構(gou)(gou)成，架設(she)在地(di)面上;后者...

一、系統概述變電設(she)備(bei)(bei)狀態(tai)檢修(xiu)是目前電力(li)系統提高檢修(xiu)效率，降(jiang)低檢修(xiu)成本的(de)(de)(de)有效手段。隨著專(zhuan)家(jia)系統的(de)(de)(de)不斷(duan)(duan)發展，*技術將一些(xie)不能依靠數(shu)據推導和(he)計(ji)算的(de)(de)(de)故(gu)障(zhang)診(zhen)斷(duan)(duan)帶入了一個新的(de)(de)(de)領(ling)域(yu)，它可利用系統建立的(de)(de)(de)專(zhuan)家(jia)數(shu)據庫和(he)推理(li)機，以及(ji)系統本身具有的(de)(de)(de)自學習(xi)能力(li)進行(xing)(xing)有效可靠的(de)(de)(de)故(gu)障(zhang)診(zhen)斷(duan)(duan)，使(shi)得設(she)備(bei)(bei)狀態(tai)的(de)(de)(de)判斷(duan)(duan)更加(jia)準確和(he)及(ji)時。對于(yu)眾多變電設(she)備(bei)(bei)來說，根據以往運(yun)行(xing)(xing)故(gu)障(zhang)的(de)(de)(de)統計(ji)數(shu)據，變壓(ya)器(qi)的(de)(de)(de)故(gu)障(zhang)率在運(yun)行(xing)(xing)故(gu)障(zhang)中(zhong)能夠占(zhan)到70%以上，也就是說變壓(ya)器(qi)安(an)全可靠的(de)(de)(de)運(yun)行(xing)(xing)是變電站正常穩定運(yun)行(xing)(xing)的(de)(de)(de)基礎，因此對于(yu)變壓(ya)器(qi)的(de)(de)(de)在線監測(ce)和(he)故(gu)障(zhang)診(zhen)斷(duan)(duan)是...

由于化工(gong)生(sheng)(sheng)產(chan)操(cao)作流(liu)程化、全封(feng)閉等特點，尤其是現代(dai)化的(de)(de)(de)(de)流(liu)程企業(ye)自動化水平高，工(gong)藝操(cao)作與(yu)檢測(ce)儀(yi)表緊(jin)密(mi)相連，工(gong)藝人員常(chang)通過(guo)(guo)檢測(ce)儀(yi)表顯示(shi)的(de)(de)(de)(de)各類工(gong)藝參數(shu)，如溫度(du)、流(liu)量、壓力和液位、原料(liao)(liao)的(de)(de)(de)(de)成分等來判斷工(gong)藝生(sheng)(sheng)產(chan)是否正常(chang)，產(chan)品質量是否合格，并(bing)根據儀(yi)表指示(shi)做出(chu)(chu)提量、減產(chan)甚至停(ting)產(chan)等決定。因此熟練掌握自動化裝(zhuang)置的(de)(de)(de)(de)故(gu)障診斷方法就顯得尤為重要(yao)。流(liu)程生(sheng)(sheng)產(chan)過(guo)(guo)程中(zhong)經常(chang)出(chu)(chu)現自動化裝(zhuang)置故(gu)障現象，由于檢測(ce)與(yu)控制過(guo)(guo)程中(zhong)出(chu)(chu)現的(de)(de)(de)(de)故(gu)障現象比(bi)較復雜，正確判斷、及時處(chu)理故(gu)障，不(bu)但(dan)直接關系(xi)到生(sheng)(sheng)產(chan)的(de)(de)(de)(de)安(an)全、穩定、產(chan)品質量及原料(liao)(liao)的(de)(de)(de)(de)消...

CMLD精(jing)密露點儀(yi)測量(liang)(liang)范圍：-100～+20℃，-80～+20℃,-60～+60℃中(zhong)間(jian)量(liang)(liang)程可選。精(jing)度：≤±1℃重復性：≤±1℃分辨率：0.1℃樣氣流量(liang)(liang)：1000～1500mL/min；樣氣壓力：0.05MPa≤入口壓力≤0.5Mpa；響(xiang)應時間(jian)：T90≤3分鐘；工(gong)作電源：1：220VAC，50Hz；CMLD精(jing)密露點儀(yi)連接(jie)電源線插頭(tou)，開(kai)啟電源開(kai)關，指(zhi)示燈亮(liang)系統供(gong)電正常，溫(wen)(wen)(wen)控儀(yi)表顯示當前溫(wen)(wen)(wen)度。按(an)標準設(she)定控溫(wen)(wen)(wen)儀(yi)表的溫(wen)(wen)(wen)度，按(an)下“工(gong)作指(zhi)示”按(an)鈕，指(zhi)示燈亮(liang)系統啟...

絕(jue)緣(yuan)在線監測(ce)損(sun)(sun)耗因數tgδ的(de)(de)(de)方(fang)法(fa)很多(duo)，如電(dian)(dian)(dian)橋法(fa)、全數字測(ce)量法(fa)等(deng)，常用(yong)的(de)(de)(de)方(fang)法(fa)是監測(ce)絕(jue)緣(yuan)體的(de)(de)(de)泄(xie)漏(lou)電(dian)(dian)(dian)流及(ji)PT信(xin)號，通(tong)過計(ji)算泄(xie)漏(lou)電(dian)(dian)(dian)流和電(dian)(dian)(dian)壓的(de)(de)(de)相角差而得到介質損(sun)(sun)耗角正切值(zhi)tgδ的(de)(de)(de)數值(zhi)。其測(ce)量原理(li)大都使用(yong)硬件鑒相及(ji)過零比較的(de)(de)(de)方(fang)法(fa)。目(mu)前的(de)(de)(de)絕(jue)緣(yuan)在線監測(ce)產(chan)品(pin)基本(ben)都是用(yong)快速傅立葉變換(FFT)的(de)(de)(de)方(fang)法(fa)來求(qiu)介損(sun)(sun)。取(qu)運行設備PT的(de)(de)(de)標準電(dian)(dian)(dian)壓信(xin)號與設備泄(xie)漏(lou)電(dian)(dian)(dian)流信(xin)號直接經高(gao)速A/D采樣(yang)轉換后(hou)送入計(ji)算機，通(tong)過軟件的(de)(de)(de)方(fang)法(fa)對(dui)信(xin)號進行頻譜分析，僅抽取(qu)50Hz的(de)(de)(de)基本(ben)信(xin)號進行計(ji)算求(qiu)出介損(sun)(sun)。這種方(fang)法(fa)能消(xiao)除(chu)各種高(gao)次諧波的(de)(de)(de)干...