球(qiu)(qiu)(qiu)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(ball valve ），啟閉件（球(qiu)(qiu)(qiu)體(ti)(ti)(ti)）由(you)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)桿帶動(dong)(dong)，并繞球(qiu)(qiu)(qiu)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)軸線作旋轉運動(dong)(dong)的(de)(de)(de)(de)(de)(de)(de)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)門(men)。亦可(ke)用(yong)(yong)于(yu)(yu)(yu)流體(ti)(ti)(ti)的(de)(de)(de)(de)(de)(de)(de)調節與控制，其中(zhong)硬(ying)密封V型球(qiu)(qiu)(qiu)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)其V型球(qiu)(qiu)(qiu)芯與堆焊硬(ying)質合金的(de)(de)(de)(de)(de)(de)(de)金屬閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)座之(zhi)間具(ju)有很(hen)強(qiang)的(de)(de)(de)(de)(de)(de)(de)剪切(qie)力(li)，特(te)別適用(yong)(yong)于(yu)(yu)(yu)含纖維(wei)、微小固體(ti)(ti)(ti)顆料等的(de)(de)(de)(de)(de)(de)(de)介(jie)質。而多(duo)(duo)通(tong)球(qiu)(qiu)(qiu)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)在(zai)(zai)管(guan)道上(shang)不僅可(ke)靈活控制介(jie)質的(de)(de)(de)(de)(de)(de)(de)合流、分(fen)流、及流向的(de)(de)(de)(de)(de)(de)(de)切(qie)換(huan)，同(tong)時(shi)也可(ke)關閉任(ren)一(yi)(yi)通(tong)道而使(shi)另外(wai)兩個通(tong)道相連。本類(lei)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)門(men)在(zai)(zai)管(guan)道中(zhong)一(yi)(yi)般應(ying)當(dang)水(shui)平安(an)裝。球(qiu)(qiu)(qiu)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)按(an)照驅動(dong)(dong)方式分(fen)為：氣動(dong)(dong)球(qiu)(qiu)(qiu)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)，電動(dong)(dong)球(qiu)(qiu)(qiu)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)，手動(dong)(dong)球(qiu)(qiu)(qiu)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)。球(qiu)(qiu)(qiu)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)在(zai)(zai)管(guan)路(lu)中(zhong)主要(yao)用(yong)(yong)來做切(qie)斷、分(fen)配(pei)和(he)(he)改(gai)變介(jie)質的(de)(de)(de)(de)(de)(de)(de)流動(dong)(dong)方向，它只需(xu)要(yao)用(yong)(yong)旋轉90度的(de)(de)(de)(de)(de)(de)(de)操作和(he)(he)很(hen)小的(de)(de)(de)(de)(de)(de)(de)轉動(dong)(dong)力(li)矩(ju)就能(neng)關閉嚴(yan)密。球(qiu)(qiu)(qiu)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)最適宜做開關、切(qie)斷閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)使(shi)用(yong)(yong)，V型球(qiu)(qiu)(qiu)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)。電動(dong)(dong)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)門(men)除應(ying)注(zhu)(zhu)意(yi)(yi)管(guan)道參(can)數(shu)外(wai)，尚應(ying)特(te)別注(zhu)(zhu)意(yi)(yi)其使(shi)用(yong)(yong)的(de)(de)(de)(de)(de)(de)(de)環(huan)境(jing)條件，由(you)于(yu)(yu)(yu)電動(dong)(dong)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)門(men)中(zhong)的(de)(de)(de)(de)(de)(de)(de)電動(dong)(dong)裝置是一(yi)(yi)機電設(she)(she)備，其使(shi)用(yong)(yong)狀態受(shou)其使(shi)用(yong)(yong)環(huan)境(jing)影響很(hen)大。通(tong)常狀態下，電動(dong)(dong)球(qiu)(qiu)(qiu)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)、蝶閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)在(zai)(zai)以下環(huan)境(jing)使(shi)用(yong)(yong)要(yao)特(te)別注(zhu)(zhu)意(yi)(yi)。球(qiu)(qiu)(qiu)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)長期以來受(shou)物料沖(chong)刷，產(chan)生(sheng)摩擦(ca)，造(zao)成嚴(yan)重的(de)(de)(de)(de)(de)(de)(de)沖(chong)擊(ji)磨(mo)(mo)損，不能(neng)滿足正常生(sheng)產(chan)，同(tong)時(shi)造(zao)成了設(she)(she)備使(shi)用(yong)(yong)期的(de)(de)(de)(de)(de)(de)(de)縮短。當(dang)下針對(dui)球(qiu)(qiu)(qiu)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)磨(mo)(mo)損多(duo)(duo)采用(yong)(yong)耐磨(mo)(mo)材(cai)(cai)料，如陶瓷材(cai)(cai)料，高分(fen)子(zi)復合材(cai)(cai)料等方法，應(ying)用(yong)(yong)較多(duo)(duo)的(de)(de)(de)(de)(de)(de)(de)有技術體(ti)(ti)(ti)系。高分(fen)子(zi)材(cai)(cai)料具(ju)有優越的(de)(de)(de)(de)(de)(de)(de)粘著性(xing)能(neng)，*耐磨(mo)(mo)性(xing)能(neng)，安(an)全(quan)的(de)(de)(de)(de)(de)(de)(de)解決(jue)了金屬經常磨(mo)(mo)損的(de)(de)(de)(de)(de)(de)(de)弊(bi)端(duan)，確(que)保了企業設(she)(she)備的(de)(de)(de)(de)(de)(de)(de)正常生(sheng)產(chan)。而且材(cai)(cai)料中(zhong)的(de)(de)(de)(de)(de)(de)(de)*的(de)(de)(de)(de)(de)(de)(de)陶瓷材(cai)(cai)料和(he)(he)特(te)殊的(de)(de)(de)(de)(de)(de)(de)表面強(qiang)化(hua)劑，使(shi)其在(zai)(zai)最惡劣(lie)的(de)(de)(de)(de)(de)(de)(de)干磨(mo)(mo)環(huan)境(jing)里耐磨(mo)(mo)和(he)(he)抗(kang)物理沖(chong)擊(ji)性(xing)能(neng)優于(yu)(yu)(yu)任(ren)何鋼鐵甚至超過瓷磚，產(chan)品(pin)與煤的(de)(de)(de)(de)(de)(de)(de)不親(qin)和(he)(he)性(xing)能(neng)是防(fang)止積煤的(de)(de)(de)(de)(de)(de)(de)理想材(cai)(cai)料。

開(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)詞語解(jie)釋為開(kai)(kai)(kai)(kai)(kai)啟和關(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)閉。它(ta)還(huan)是(shi)指一個(ge)(ge)可以(yi)使電(dian)(dian)(dian)(dian)(dian)路(lu)開(kai)(kai)(kai)(kai)(kai)路(lu)、使電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)中斷或使其(qi)(qi)(qi)流(liu)(liu)(liu)到其(qi)(qi)(qi)他(ta)電(dian)(dian)(dian)(dian)(dian)路(lu)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)子(zi)元件(jian)。最常見的(de)(de)(de)開(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)是(shi)讓人操作的(de)(de)(de)機(ji)電(dian)(dian)(dian)(dian)(dian)設備(bei)，其(qi)(qi)(qi)中有(you)(you)(you)一個(ge)(ge)或數個(ge)(ge)電(dian)(dian)(dian)(dian)(dian)子(zi)接(jie)點(dian)(dian)(dian)。接(jie)點(dian)(dian)(dian)的(de)(de)(de)“閉合”（closed）表(biao)示電(dian)(dian)(dian)(dian)(dian)子(zi)接(jie)點(dian)(dian)(dian)導(dao)通，允許電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)流(liu)(liu)(liu)過(guo)；開(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)“開(kai)(kai)(kai)(kai)(kai)路(lu)”（open）表(biao)示電(dian)(dian)(dian)(dian)(dian)子(zi)接(jie)點(dian)(dian)(dian)不(bu)導(dao)通形(xing)成開(kai)(kai)(kai)(kai)(kai)路(lu)，不(bu)允許電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)流(liu)(liu)(liu)過(guo)。最簡單的(de)(de)(de)開(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)有(you)(you)(you)二片名叫“觸(chu)(chu)點(dian)(dian)(dian)”的(de)(de)(de)金(jin)(jin)屬，二觸(chu)(chu)點(dian)(dian)(dian)接(jie)觸(chu)(chu)時(shi)(shi)(shi)(shi)使電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)形(xing)成回(hui)路(lu)，二觸(chu)(chu)點(dian)(dian)(dian)不(bu)接(jie)觸(chu)(chu)時(shi)(shi)(shi)(shi)電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)開(kai)(kai)(kai)(kai)(kai)路(lu)。選(xuan)用接(jie)點(dian)(dian)(dian)金(jin)(jin)屬時(shi)(shi)(shi)(shi)需考(kao)(kao)慮其(qi)(qi)(qi)對抗腐蝕(shi)的(de)(de)(de)程度(du)(du)，因為大多數金(jin)(jin)屬氧化(hua)后會(hui)(hui)(hui)形(xing)成絕(jue)緣的(de)(de)(de)氧化(hua)物，使接(jie)點(dian)(dian)(dian)無法正(zheng)常工作。選(xuan)用接(jie)點(dian)(dian)(dian)金(jin)(jin)屬也(ye)(ye)需考(kao)(kao)慮其(qi)(qi)(qi)電(dian)(dian)(dian)(dian)(dian)導(dao)率、硬度(du)(du)、機(ji)械(xie)(xie)強度(du)(du)、成本及是(shi)否有(you)(you)(you)毒等(deng)因素。有(you)(you)(you)時(shi)(shi)(shi)(shi)會(hui)(hui)(hui)在接(jie)點(dian)(dian)(dian)上電(dian)(dian)(dian)(dian)(dian)鍍(du)抗腐蝕(shi)金(jin)(jin)屬。一般會(hui)(hui)(hui)鍍(du)在接(jie)點(dian)(dian)(dian)的(de)(de)(de)接(jie)觸(chu)(chu)面(mian)，以(yi)避免因氧化(hua)物而影(ying)響其(qi)(qi)(qi)性(xing)能。有(you)(you)(you)時(shi)(shi)(shi)(shi)接(jie)觸(chu)(chu)面(mian)也(ye)(ye)會(hui)(hui)(hui)使用非金(jin)(jin)屬的(de)(de)(de)導(dao)電(dian)(dian)(dian)(dian)(dian)材料，如(ru)導(dao)電(dian)(dian)(dian)(dian)(dian)塑膠(jiao)。開(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)中除了接(jie)點(dian)(dian)(dian)之(zhi)外，也(ye)(ye)會(hui)(hui)(hui)有(you)(you)(you)可動(dong)件(jian)使接(jie)點(dian)(dian)(dian)導(dao)通或不(bu)導(dao)通，開(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)可依可動(dong)件(jian)的(de)(de)(de)不(bu)同為分為杠(gang)桿開(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)（Toggle switch）、按(an)鍵開(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、船型開(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)（Rocker switch）等(deng)，而可動(dong)件(jian)也(ye)(ye)可以(yi)是(shi)其(qi)(qi)(qi)他(ta)型式(shi)的(de)(de)(de)機(ji)械(xie)(xie)連(lian)桿。延(yan)時(shi)(shi)(shi)(shi)開(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)是(shi)使用電(dian)(dian)(dian)(dian)(dian)子(zi)元件(jian)繼電(dian)(dian)(dian)(dian)(dian)器安裝于開(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)之(zhi)中，延(yan)時(shi)(shi)(shi)(shi)開(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)電(dian)(dian)(dian)(dian)(dian)路(lu)的(de)(de)(de)一種開(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)。延(yan)時(shi)(shi)(shi)(shi)開(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)又分為聲控延(yan)時(shi)(shi)(shi)(shi)開(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、光控延(yan)時(shi)(shi)(shi)(shi)開(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、觸(chu)(chu)摸(mo)式(shi)延(yan)時(shi)(shi)(shi)(shi)開(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)等(deng)。

電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)測(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)儀(yi)(yi)(yi)(yi)，是測(ce)(ce)(ce)(ce)(ce)(ce)量(liang)物體導電(dian)(dian)(dian)(dian)(dian)性(xing)的(de)(de)(de)(de)一種儀(yi)(yi)(yi)(yi)器，電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)測(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)儀(yi)(yi)(yi)(yi)被(bei)廣(guang)泛(fan)的(de)(de)(de)(de)應用(yong)于電(dian)(dian)(dian)(dian)(dian)氣安全檢查與接(jie)地(di)(di)工(gong)程(cheng)竣(jun)工(gong)驗等(deng)場合。電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)測(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)儀(yi)(yi)(yi)(yi)的(de)(de)(de)(de)種類比(bi)較多，包(bao)括(kuo)接(jie)地(di)(di)電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)測(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)儀(yi)(yi)(yi)(yi)、絕(jue)緣電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)測(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)儀(yi)(yi)(yi)(yi)、接(jie)地(di)(di)電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)測(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)儀(yi)(yi)(yi)(yi)、直流電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)測(ce)(ce)(ce)(ce)(ce)(ce)量(liang)儀(yi)(yi)(yi)(yi)、表(biao)面(mian)電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)測(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)儀(yi)(yi)(yi)(yi)以及回(hui)路電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)測(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)儀(yi)(yi)(yi)(yi)。電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)測(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)儀(yi)(yi)(yi)(yi)，是電(dian)(dian)(dian)(dian)(dian)氣安全檢查與接(jie)地(di)(di)工(gong)程(cheng)竣(jun)工(gong)驗收*的(de)(de)(de)(de)工(gong)具。包(bao)括(kuo)接(jie)地(di)(di)電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)測(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)儀(yi)(yi)(yi)(yi)、絕(jue)緣電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)測(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)儀(yi)(yi)(yi)(yi)、直流電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)測(ce)(ce)(ce)(ce)(ce)(ce)量(liang)儀(yi)(yi)(yi)(yi)、表(biao)面(mian)電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)測(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)儀(yi)(yi)(yi)(yi)以及回(hui)路電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)測(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)儀(yi)(yi)(yi)(yi)。回(hui)路電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)測(ce)(ce)(ce)(ce)(ce)(ce)量(liang)儀(yi)(yi)(yi)(yi)（變壓器回(hui)路電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)測(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)儀(yi)(yi)(yi)(yi)）適用(yong)于測(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)高低壓開關的(de)(de)(de)(de)主(zhu)觸頭接(jie)觸電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)值(zhi)，高低壓電(dian)(dian)(dian)(dian)(dian) 纜(lan)線路的(de)(de)(de)(de)直流電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)值(zhi)等(deng)。智能(neng)回(hui)路電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)測(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)儀(yi)(yi)(yi)(yi)采用(yong)100A恒流輸出。高輸出電(dian)(dian)(dian)(dian)(dian)壓達10V（常規儀(yi)(yi)(yi)(yi)器的(de)(de)(de)(de)2-3倍）可(ke)采用(yong)載(zai)面(mian)細的(de)(de)(de)(de)測(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)線，大大減輕(qing)了(le)(le)現(xian)場測(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)人員的(de)(de)(de)(de)勞(lao)動(dong)(dong)強度(du)。測(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)過程(cheng)全部由單片控制自動(dong)(dong)實(shi)施，精度(du)高，復測(ce)(ce)(ce)(ce)(ce)(ce)性(xing)好(hao)，單按鍵操作，簡單易行，測(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)數據液晶顯示。適用(yong)于不(bu)同的(de)(de)(de)(de)工(gong)作環境。接(jie)地(di)(di)電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)測(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)儀(yi)(yi)(yi)(yi)是檢驗測(ce)(ce)(ce)(ce)(ce)(ce)量(liang)接(jie)地(di)(di)電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)的(de)(de)(de)(de)常用(yong)儀(yi)(yi)(yi)(yi)表(biao)，進年來由于計算機(ji)技術(shu)的(de)(de)(de)(de)飛速發展，因(yin)此接(jie)地(di)(di)電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)測(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)儀(yi)(yi)(yi)(yi)也滲(shen)透了(le)(le)大量(liang)的(de)(de)(de)(de)微處理機(ji)技術(shu)，其測(ce)(ce)(ce)(ce)(ce)(ce)量(liang)功(gong)能(neng)，內容與精度(du)是一般儀(yi)(yi)(yi)(yi)器所不(bu)能(neng)相比(bi)的(de)(de)(de)(de)。

互感器又稱為儀用變壓器，是電流互感器和電壓互感器的統稱。能將高電壓變成低電壓、大電流變成小電流，用于量測或保護系統。其功能主要是將高電壓或大電流按比例變換成標準低電壓（100V）或標準小電流（5A或1A，均指額定值），以便實現測量儀表、保護設備及自動控制設備的標準化、小型化。同時互感器還可用來隔開高電壓系統，以保證人身和設備的安全。
在供電用電的線路中，電流相差從幾安到幾萬安，電壓相差從幾伏到幾百萬伏。線路中電流電壓都比較高，如直接測量是非常危險的。為便于二次儀表測量需要轉換為比較統一的電流電壓，使用互感器起到變流變壓和電氣隔離的作用。
 顯示儀表大部分是指針式的電流電壓表，所以電流互感器的二次電流大多數是安培級的（如5等）。隨著時代發展，電量測量大多已經達到數字化，而計算機的采樣的信號一般為毫安級（0-5V、4-20mA等）。微型電流互感器二次電流為毫安級，主要起大互感器與采樣之間的橋梁作用。微型電流互感器稱之為“儀用電流互感器”。（“儀用電流互感器”有一層含義是在實驗室使用的多電流比精密電流互感器，一般用于擴大儀表量程。）
電(dian)(dian)流互(hu)感器(qi)原理線路圖(tu)微型電(dian)(dian)流互(hu)感器(qi)與變(bian)(bian)壓(ya)器(qi)類(lei)似也(ye)是(shi)根據電(dian)(dian)磁(ci)感應原理工作，變(bian)(bian)壓(ya)器(qi)變(bian)(bian)換(huan)的是(shi)電(dian)(dian)壓(ya)而微型電(dian)(dian)流互(hu)感器(qi)變(bian)(bian)換(huan)的是(shi)電(dian)(dian)流罷了。繞(rao)組(zu)N1接被測電(dian)(dian)流，稱(cheng)(cheng)為一次(ci)繞(rao)組(zu)（或原邊繞(rao)組(zu)、初級繞(rao)組(zu)）；繞(rao)組(zu)N2接測量儀表(biao)，稱(cheng)(cheng)為二(er)次(ci)繞(rao)組(zu)（或副邊繞(rao)組(zu)、次(ci)級繞(rao)組(zu)）。

發電(dian)(dian)機(ji)能把(ba)機(ji)械(xie)能轉(zhuan)換成(cheng)電(dian)(dian)能，干(gan)電(dian)(dian)池(chi)能把(ba)化(hua)學(xue)能轉(zhuan)換成(cheng)電(dian)(dian)能。發電(dian)(dian)機(ji)、電(dian)(dian)池(chi)本(ben)身并不帶電(dian)(dian)，它的(de)兩極分(fen)別有正(zheng)負(fu)電(dian)(dian)荷(he)，由正(zheng)負(fu)電(dian)(dian)荷(he)產生(sheng)電(dian)(dian)壓(ya)（電(dian)(dian)流(liu)(liu)是電(dian)(dian)荷(he)在電(dian)(dian)壓(ya)的(de)作用下(xia)定向移(yi)動(dong)而形成(cheng)的(de)），電(dian)(dian)荷(he)導體(ti)(ti)(ti)里本(ben)來(lai)(lai)就(jiu)有，要(yao)產生(sheng)電(dian)(dian)流(liu)(liu)只需要(yao)加上(shang)電(dian)(dian)壓(ya)即可，當電(dian)(dian)池(chi)兩極接上(shang)導體(ti)(ti)(ti)時(shi)為(wei)了(le)(le)產生(sheng)電(dian)(dian)流(liu)(liu)而把(ba)正(zheng)負(fu)電(dian)(dian)荷(he)釋放(fang)出去，當電(dian)(dian)荷(he)散盡(jin)時(shi)，也(ye)就(jiu)荷(he)盡(jin)流(liu)(liu)（壓(ya)）消了(le)(le)。干(gan)電(dian)(dian)池(chi)等叫做(zuo)電(dian)(dian)源。通過變壓(ya)器和整流(liu)(liu)器，把(ba)交流(liu)(liu)電(dian)(dian)變成(cheng)直流(liu)(liu)電(dian)(dian)的(de)裝置叫做(zuo)整流(liu)(liu)電(dian)(dian)源。能提供信(xin)號(hao)的(de)電(dian)(dian)子設(she)備叫做(zuo)信(xin)號(hao)源。晶體(ti)(ti)(ti)三極管能把(ba)前面送(song)來(lai)(lai)的(de)信(xin)號(hao)加以(yi)放(fang)大，又把(ba)放(fang)大了(le)(le)的(de)信(xin)號(hao)傳送(song)到后(hou)面的(de)電(dian)(dian)路中去。晶體(ti)(ti)(ti)三極管對后(hou)面的(de)電(dian)(dian)路來(lai)(lai)說，也(ye)可以(yi)看(kan)做(zuo)是信(xin)號(hao)源。整流(liu)(liu)電(dian)(dian)源、信(xin)號(hao)源有時(shi)也(ye)叫做(zuo)電(dian)(dian)源。

SCHUNK雄克    測量探頭    DTA-5G-1 5-CA  34419
SCHUNK雄克    氣缸    SRU+30-W-180-3-4-M  0361824
SCHUNK雄克    接近開關    301469
SCHUNK雄克    備件    0305511 MPG+32
SCHUNK雄克    電磁開關    301032
SCHUNK雄克    凸輪配合件（公）    SWK-011-000-000-USA USA-VERSION
SCHUNK雄克    夾緊氣缸    371124 PGN+100-1-P
SCHUNK雄克    減徑套筒    207920
SCHUNK雄克    備件    340044
SCHUNK雄克    發電機接地碳刷    S13F19 8*20*32
SCHUNK雄克    備件    INW40/S-M12 301504
SCHUNK雄克    接近開關    301474
SCHUNK雄克    備件    0301474-IN40-S-M8
SCHUNK雄克    備件    0305511 MPG+32
SCHUNK雄克    機械手    JGZ100-1-10  貨號：308940
SCHUNK雄克    備件    42.11.204 材料序列號：10467506
SCHUNK雄克    備件    MMS 22-S-PNP-M8
SCHUNK雄克    汽缸    302132
SCHUNK雄克    軸聯軸器補償裝置    AGE-S-200-XYZ
SCHUNK雄克    備件    RH9010 ID:0360141
SCHUNK雄克    電磁開關    MMS-K 65-S-PNP
SCHUNK雄克    Roatry modules    SRU+35-W-180 30055461
SCHUNK雄克    旋轉氣缸    SRU25.2-180-900357650
SCHUNK雄克    備件    PZN 64-1 300310
SCHUNK雄克    備件    30803525  B60-SSS-M-2005-120-400-2  SN.59735
SCHUNK雄克    氣缸    JGP200-1
SCHUNK雄克    O-Ring Din    9611131
SCHUNK雄克    抓手    JGP 160-1   0308660
SCHUNK雄克    氣缸    0371399    PGN+50-1-AS
SCHUNK雄克    氣爪    PGN-PLUS 100-1-AS
SCHUNK雄克    機器人附件    HWK-050-000-000  0302750
SCHUNK雄克    接近開關    FPS-M8 0301704
SCHUNK雄克    夾爪    0308660(JGP-160-1)
SCHUNK雄克    備件    SRH-PLUS25-W-M8
SCHUNK雄克    備件    PGN+200-1  37371105
SCHUNK雄克    夾爪    0307137
SCHUNK雄克    備件    JGP-64-1-AS
SCHUNK雄克    接近開關    FPS-M8
SCHUNK雄克    電磁閥    0309262 4712 302753
SCHUNK雄克    直線單元    seserien-Nr：64919 bsetell-Nr：898350
SCHUNK雄克    帶定心間隙的定位銷    SPC 40-16RF
SCHUNK雄克    備件    MPG-25-AS-3004-8062
SCHUNK雄克    夾爪    16502P-P-RE-C/DE-STA-CO
SCHUNK雄克    氣爪    0371463
SCHUNK雄克    備件    215-66
SCHUNK雄克    傳感器延長線    KA BW 08-L 4P-0500
SCHUNK雄克    氣缸    TGP-64-1-AS308621
SCHUNK雄克    微型閥接頭    0309480.VDR 25 D 6m
SCHUNK雄克    氣缸    SRU35.2-180-3-4 STOSSD MC-225MH  30037591
SCHUNK雄克    中心架    THL 2 SN:080080
SCHUNK雄克    備件    0305502
SCHUNK雄克    機械手    PGN+125-1     371103
SCHUNK雄克    氣動鉗    DRG54  307107
SCHUNK雄克    碳刷    C80X 40*25*55
SCHUNK雄克    parallel gripper    340040
SCHUNK雄克    氣缸    370252 DPG-80/1
SCHUNK雄克    氣缸    BSWS-B 125 序列號：303029
SCHUNK雄克    抓手    PGN 80-A AS
SCHUNK雄克    備件    5516387 COVER;PLATE 4;PFH300
SCHUNK雄克    夾爪    PWG 60-S 0302612
SCHUNK雄克    備件    Naeherungsschalter IN 3-S-M8-PNP
SCHUNK雄克    備件    0301742 V2-M12
SCHUNK雄克    夾爪    MPG plus 32 0305511
SCHUNK雄克    備件    序列號;301032  MMS-P  22-S-M8-PNP
SCHUNK雄克    備件    BT40-D20-72.5
SCHUNK雄克    備件    GWB 34  307135
SCHUNK雄克    碳刷    A41X  40*20*100
SCHUNK雄克    氣缸    PGN-PLUS64-2-AS
SCHUNK雄克    快換接頭    9935820
SCHUNK雄克    2-Finger-parallel gripper    LGP-40  312915
SCHUNK雄克    備件    340042  MPG 40 AS
SCHUNK雄克    備件    PGN PLUS 100-1-AS 371402
SCHUNK雄克    平行夾持器    MPG40AS 0340042
SCHUNK雄克    備件    0303310
SCHUNK雄克    備件    PGN+200-1(ID:0371105)
SCHUNK雄克    備件    PZN-plus-160-2-AS 303614
SCHUNK雄克    備件    AGE-XY-050-P NO:324451
SCHUNK雄克    備件    SRU-plus 30-W-180-3-M   0361830
SCHUNK雄克    備件    GWK080
SCHUNK雄克    備件    PGN+100-1
SCHUNK雄克    旋轉氣缸    0303415 PZN+200-2
SCHUNK雄克    備件    371402 PGN+100 -1  AS
SCHUNK雄克    備件    0340009 MPG20
SCHUNK雄克    夾爪    PGN+125-1-AS  訂貨號371403
SCHUNK雄克    夾爪    PHF50
SCHUNK雄克    三爪卡盤夾具    88022502
SCHUNK雄克    氣缸    PZN+64-1-K
SCHUNK雄克    氣爪    0371451 PGN-PLUS 80-2-AS
SCHUNK雄克    磁性開關    0301042  MMS 22-S-M8-PNP-SA
SCHUNK雄克    氣動卡鉗    405200
SCHUNK雄克    旋轉氣缸    SRU-plus 40-W-180-3-8-M8 ID:0362224
SCHUNK雄克    氣缸    PZN160-1
SCHUNK雄克    cable    30066908 FTD-C-L-L2-15
SCHUNK雄克    機械手    PGN-plus-64-1-AS  0371092
SCHUNK雄克    氣缸    JGZ125-1
SCHUNK雄克    減徑套    0204328
SCHUNK雄克    備件    SRU+50 W-180-3-M/PWG170F
SCHUNK雄克    旋轉氣缸    OSZ-C34-4  354324
SCHUNK雄克    卡爪    PGN64-1/370100
SCHUNK雄克    備件    9985010
SCHUNK雄克    備件    PGN-plus 64-1
SCHUNK雄克    夾爪    JGZ160-1(ID:0308960)
SCHUNK雄克    備件    0303697 PINCE PRG 100-60
SCHUNK雄克    ZYL.STIFT    9682030
SCHUNK雄克    Roatry modules    SRU+35-W-180 30055461
SCHUNK雄克    壓力保持閥    SDV-P 04/403130
SCHUNK雄克    備件    0304421  DPZ+80-1
SCHUNK雄克    氣缸    PGN+125-1 371103
SCHUNK雄克    氣壓缸    PGN+125/1
SCHUNK雄克    ParallelGirpper    LGP 40-AS
SCHUNK雄克    備件    301294   KAS-19B-K-90-C
SCHUNK雄克    備件    370100
SCHUNK雄克    傳感器    301432  MMS 22-SPM8
SCHUNK雄克    備件    MALE GRIP.CHANGER SWK-011 0302317
SCHUNK雄克    備件    JGP125-1-AS
SCHUNK雄克    備件    PGN-plus 40-380
SCHUNK雄克    備件    0435100
SCHUNK雄克    備件    PSH 42-2 302143
SCHUNK雄克    備件    PAD2/ST6500 MMS22-S-M8-PNP
SCHUNK雄克    備件    MPG32  340011
SCHUNK雄克    汽缸    MPG50 ID Nr340013
SCHUNK雄克    氣缸    DPG64 0370251
SCHUNK雄克    夾抓氣缸    PGN+64-1-AS  371092
SCHUNK雄克    卡爪gripper jaws    PGN300-2AS/370456
SCHUNK雄克    備件    PZN+160-1
SCHUNK雄克    機器人電器接頭    1414081026 9935819
SCHUNK雄克    氣爪    HWA-040-A15-000
SCHUNK雄克    備件    302741/HWA 40
SCHUNK雄克    旋轉氣缸    SRU25.2-180-900357650
SCHUNK雄克    備件    30057874 HWK-080-000-000-VS
SCHUNK雄克    接近開關    MMS-P22-S-M8-PNP 0301370
SCHUNK雄克    備件    0371106 PGN+300-1
SCHUNK雄克    (夾爪氣缸)    JGZ160
SCHUNK雄克    備件    PGN40PLUS(371080)
SCHUNK雄克    氣爪    PGN+240/1
SCHUNK雄克    高頻電纜    103 568 92
SCHUNK雄克    右切刀頭    10357345
SCHUNK雄克    氣缸    JGP240-1
SCHUNK雄克    備件    10466747
SCHUNK雄克    電磁開關    JGP80-1-AS（308631）
SCHUNK雄克    高精度感溫線    MMSK22-S-PNP     5523132  5米
SCHUNK雄克    備件    MMS-P 22-S-M8-PNP   0301370
SCHUNK雄克    氣缸    DSE-A40-0
SCHUNK雄克    旋轉氣缸    OSE-A45-8  30016019
SCHUNK雄克    平片(pian)    324480

SCHUNK雄克氣缸 JGP240-1翊霈代理供應

SCHUNK雄克氣缸 JGP240-1翊霈代理供應