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電流互感器退磁的原因

電(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)互(hu)感(gan)器是依據電(dian)(dian)(dian)磁(ci)感(gan)應原理將(jiang)一次(ci)(ci)側(ce)(ce)大電(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)轉(zhuan)換(huan)成二(er)次(ci)(ci)側(ce)(ce)小(xiao)電(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)來(lai)(lai)測(ce)量的(de)(de)儀(yi)器。電(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)互(hu)感(gan)器是由閉(bi)合(he)的(de)(de)鐵(tie)心(xin)和(he)繞(rao)組組成。它(ta)(ta)的(de)(de)一次(ci)(ci)側(ce)(ce)繞(rao)組匝數(shu)很少，串(chuan)(chuan)在(zai)(zai)需要測(ce)量的(de)(de)電(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)的(de)(de)線路(lu)中。因(yin)此它(ta)(ta)經常有線路(lu)的(de)(de)全部(bu)電(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)流(liu)(liu)(liu)(liu)(liu)(liu)過，二(er)次(ci)(ci)側(ce)(ce)繞(rao)組匝數(shu)比較多，串(chuan)(chuan)接在(zai)(zai)測(ce)量儀(yi)表(biao)和(he)保護回(hui)路(lu)中，電(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)互(hu)感(gan)器在(zai)(zai)工作(zuo)時(shi)(shi)，它(ta)(ta)的(de)(de)二(er)次(ci)(ci)側(ce)(ce)回(hui)路(lu)始(shi)終是閉(bi)合(he)的(de)(de)，因(yin)此測(ce)量儀(yi)表(biao)和(he)保護回(hui)路(lu)串(chuan)(chuan)聯(lian)線圈(quan)的(de)(de)阻(zu)抗很小(xiao)，電(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)互(hu)感(gan)器的(de)(de)工作(zuo)狀態接近(jin)短路(lu)。電(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)互(hu)感(gan)器是把(ba)一次(ci)(ci)側(ce)(ce)大電(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)轉(zhuan)換(huan)成二(er)次(ci)(ci)側(ce)(ce)小(xiao)電(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)來(lai)(lai)測(ce)量，二(er)次(ci)(ci)側(ce)(ce)不可開路(lu)。電(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)互(hu)感(gan)器退磁(ci)的(de)(de)原因(yin)：當電(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)(liu)突然減小(xiao)時(shi)(shi)，變(bian)壓器鐵(tie)...

直流穩壓電源技術在不斷創新，是不可少的供電方式

直(zhi)流穩(wen)(wen)(wen)壓(ya)(ya)(ya)(ya)電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)是電(dian)(dian)(dian)(dian)子技術(shu)領域*的(de)(de)設(she)備(bei)，常見(jian)的(de)(de)直(zhi)流穩(wen)(wen)(wen)壓(ya)(ya)(ya)(ya)電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)，大(da)(da)都(dou)(dou)采用串聯式(shi)反(fan)饋式(shi)穩(wen)(wen)(wen)壓(ya)(ya)(ya)(ya)原理(li)，通過調(diao)整(zheng)輸出(chu)端取樣電(dian)(dian)(dian)(dian)阻支路中的(de)(de)電(dian)(dian)(dian)(dian)位(wei)器來調(diao)整(zheng)輸出(chu)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)。由于(yu)電(dian)(dian)(dian)(dian)位(wei)器阻值變(bian)化(hua)的(de)(de)非線性和調(diao)整(zheng)范(fan)圍窄，使普通直(zhi)流穩(wen)(wen)(wen)壓(ya)(ya)(ya)(ya)電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)難(nan)以實現(xian)輸出(chu)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)的(de)(de)精(jing)確調(diao)整(zheng)。直(zhi)流穩(wen)(wen)(wen)壓(ya)(ya)(ya)(ya)電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)是能為負載(zai)(zai)提供穩(wen)(wen)(wen)定直(zhi)流電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)的(de)(de)電(dian)(dian)(dian)(dian)子裝置。它的(de)(de)供電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)大(da)(da)都(dou)(dou)是交(jiao)流電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)，當交(jiao)流供電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)的(de)(de)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)或負載(zai)(zai)電(dian)(dian)(dian)(dian)阻變(bian)化(hua)時，穩(wen)(wen)(wen)壓(ya)(ya)(ya)(ya)器的(de)(de)直(zhi)流輸出(chu)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)都(dou)(dou)會(hui)保持穩(wen)(wen)(wen)定。采用微電(dian)(dian)(dian)(dian)腦控制技術(shu)及完善的(de)(de)保護電(dian)(dian)(dian)(dian)路和專用的(de)(de)高性能基(ji)準穩(wen)(wen)(wen)壓(ya)(ya)(ya)(ya)源(yuan)(yuan)(yuan)元件，因而使該系列穩(wen)(wen)(wen)壓(ya)(ya)(ya)(ya)電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)具有了穩(wen)(wen)(wen)壓(ya)(ya)(ya)(ya)精(jing)度高，紋波(bo)...

剖析耐壓測試儀的安全要點

耐(nai)(nai)壓(ya)(ya)(ya)測(ce)試(shi)儀(yi)真正實現了絕(jue)(jue)(jue)緣(yuan)油介電強度測(ce)定(ding)的(de)(de)(de)(de)全自動化，將原來(lai)繁瑣而(er)危險的(de)(de)(de)(de)工(gong)(gong)作變得(de)安全而(er)簡(jian)便(bian)。該(gai)儀(yi)器(qi)采(cai)用特殊軟硬件(jian)抗干擾措施，消除了易出現的(de)(de)(de)(de)死機現象。體積更小，方便(bian)攜帶(dai)到現場(chang)使用。耐(nai)(nai)壓(ya)(ya)(ya)測(ce)試(shi)是指對各種電器(qi)裝置、絕(jue)(jue)(jue)緣(yuan)材料(liao)(liao)和絕(jue)(jue)(jue)緣(yuan)結構的(de)(de)(de)(de)耐(nai)(nai)受電壓(ya)(ya)(ya)能力進行的(de)(de)(de)(de)測(ce)試(shi)。在不破壞絕(jue)(jue)(jue)緣(yuan)材料(liao)(liao)性能的(de)(de)(de)(de)情況下，對絕(jue)(jue)(jue)緣(yuan)材料(liao)(liao)或(huo)絕(jue)(jue)(jue)緣(yuan)結構施加高(gao)電壓(ya)(ya)(ya)的(de)(de)(de)(de)過程稱(cheng)為耐(nai)(nai)壓(ya)(ya)(ya)試(shi)驗(yan)(yan)。一般來(lai)講，耐(nai)(nai)壓(ya)(ya)(ya)測(ce)試(shi)主(zhu)要目的(de)(de)(de)(de)是檢查(cha)絕(jue)(jue)(jue)緣(yuan)耐(nai)(nai)受工(gong)(gong)作電壓(ya)(ya)(ya)或(huo)過電壓(ya)(ya)(ya)的(de)(de)(de)(de)能力，進而(er)檢驗(yan)(yan)產(chan)品設備的(de)(de)(de)(de)絕(jue)(jue)(jue)緣(yuan)性能是否符合安全標準。耐(nai)(nai)壓(ya)(ya)(ya)測(ce)試(shi)儀(yi)由(you)髙壓(ya)(ya)(ya)變壓(ya)(ya)(ya)控制回路（能調節(jie)輸出需要的(de)(de)(de)(de)...

絕緣電阻測試儀該如何正確使用？

絕(jue)(jue)(jue)緣(yuan)(yuan)(yuan)(yuan)(yuan)(yuan)電(dian)(dian)(dian)(dian)阻測(ce)試(shi)儀(yi)整機電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)設(she)計采(cai)用(yong)微機技術設(she)計為核心，以大(da)規模集成(cheng)電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)和數(shu)字電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)相組合，配有強大(da)的(de)(de)測(ce)量和數(shu)據處理軟(ruan)件，完成(cheng)絕(jue)(jue)(jue)緣(yuan)(yuan)(yuan)(yuan)(yuan)(yuan)電(dian)(dian)(dian)(dian)阻、電(dian)(dian)(dian)(dian)壓(ya)等參數(shu)測(ce)量，性(xing)能穩定，操作簡便。絕(jue)(jue)(jue)緣(yuan)(yuan)(yuan)(yuan)(yuan)(yuan)電(dian)(dian)(dian)(dian)阻測(ce)試(shi)儀(yi)采(cai)用(yong)單片機作為控制核心,液晶顯示,人機界面良好(hao),具(ju)(ju)(ju)有實時時鐘控制,能自動測(ce)量絕(jue)(jue)(jue)緣(yuan)(yuan)(yuan)(yuan)(yuan)(yuan)電(dian)(dian)(dian)(dian)阻、吸收比(bi)、極化(hua)指(zhi)數(shu)。儀(yi)器具(ju)(ju)(ju)有很大(da)的(de)(de)短路(lu)(lu)(lu)電(dian)(dian)(dian)(dian)流，能滿(man)足(zu)大(da)型設(she)備的(de)(de)要求。絕(jue)(jue)(jue)緣(yuan)(yuan)(yuan)(yuan)(yuan)(yuan)電(dian)(dian)(dian)(dian)阻測(ce)試(shi)儀(yi)測(ce)量絕(jue)(jue)(jue)緣(yuan)(yuan)(yuan)(yuan)(yuan)(yuan)電(dian)(dian)(dian)(dian)阻的(de)(de)具(ju)(ju)(ju)體步驟：1、將被測(ce)設(she)備脫離電(dian)(dian)(dian)(dian)源，并進行放電(dian)(dian)(dian)(dian)，再把設(she)備清掃干凈(jing)。(雙回線，雙母線，當一(yi)(yi)路(lu)(lu)(lu)帶電(dian)(dian)(dian)(dian)時，不得測(ce)量另一(yi)(yi)路(lu)(lu)(lu)的(de)(de)絕(jue)(jue)(jue)緣(yuan)(yuan)(yuan)(yuan)(yuan)(yuan)電(dian)(dian)(dian)(dian)阻)。...

交流耐壓測試儀安全操作規程及注意事項

交(jiao)流(liu)(liu)(liu)耐(nai)壓(ya)(ya)測試(shi)(shi)(shi)儀(yi)(yi)(yi)又叫(jiao)電(dian)(dian)氣(qi)絕(jue)緣強度(du)試(shi)(shi)(shi)驗儀(yi)(yi)(yi)或叫(jiao)介(jie)質強度(du)測試(shi)(shi)(shi)儀(yi)(yi)(yi)。將一(yi)規(gui)定交(jiao)流(liu)(liu)(liu)或直流(liu)(liu)(liu)高壓(ya)(ya)施加在電(dian)(dian)器帶(dai)(dai)電(dian)(dian)部分和非帶(dai)(dai)電(dian)(dian)部分（一(yi)般為外殼）之間(jian)以(yi)檢查電(dian)(dian)器的絕(jue)緣材(cai)料所能承受耐(nai)壓(ya)(ya)能力(li)的試(shi)(shi)(shi)驗。交(jiao)流(liu)(liu)(liu)耐(nai)壓(ya)(ya)測試(shi)(shi)(shi)儀(yi)(yi)(yi)安(an)全操作(zuo)規(gui)程：1、檢查本儀(yi)(yi)(yi)器工作(zuo)是(shi)否正常。接通交(jiao)流(liu)(liu)(liu)50Hz，電(dian)(dian)壓(ya)(ya)220V電(dian)(dian)源(yuan)，開啟(qi)電(dian)(dian)源(yuan)開關(guan)后(hou)打開時間(jian)開關(guan)，限流(liu)(liu)(liu)控制在1mA以(yi)下。高壓(ya)(ya)啟(qi)動(dong)后(hou)，少量(liang)旋(xuan)動(dong)調壓(ya)(ya)器旋(xuan)鈕，測試(shi)(shi)(shi)儀(yi)(yi)(yi)電(dian)(dian)壓(ya)(ya)表(biao)有指示，說明儀(yi)(yi)(yi)器工作(zuo)正常。2、將絕(jue)緣電(dian)(dian)阻(zu)測試(shi)(shi)(shi)合格的工件，置于耐(nai)壓(ya)(ya)測試(shi)(shi)(shi)臺側，按所進行的被測試(shi)(shi)(shi)對象(xiang)連接好測試(shi)(shi)(shi)電(dian)(dian)源(yuan)線(xian)。3、常規(gui)耐(nai)壓(ya)(ya)...

耐壓測試儀使用期間要注意的九大事項

耐壓(ya)(ya)測(ce)(ce)(ce)試儀具有(you)單一測(ce)(ce)(ce)試、自(zi)動(dong)測(ce)(ce)(ce)試模式，可以由耐電(dian)(dian)壓(ya)(ya)測(ce)(ce)(ce)試自(zi)動(dong)轉入(ru)絕緣(yuan)電(dian)(dian)阻測(ce)(ce)(ce)試或(huo)者(zhe)由絕緣(yuan)電(dian)(dian)阻轉入(ru)耐電(dian)(dian)壓(ya)(ya)測(ce)(ce)(ce)試，提(ti)高(gao)了測(ce)(ce)(ce)試的(de)(de)(de)(de)(de)快捷性和安全(quan)性。儀器(qi)高(gao)壓(ya)(ya)輸出端有(you)電(dian)(dian)壓(ya)(ya)存在(zai)時，高(gao)壓(ya)(ya)指示燈就會顯示，以警告可能的(de)(de)(de)(de)(de)電(dian)(dian)擊危險，提(ti)高(gao)了儀器(qi)的(de)(de)(de)(de)(de)安全(quan)性。雙(shuang)表頭指示電(dian)(dian)壓(ya)(ya)，可以讓你(ni)更快速地把握電(dian)(dian)壓(ya)(ya)趨勢，并(bing)方便準確地讀出數據。耐壓(ya)(ya)測(ce)(ce)(ce)試儀使用要注意的(de)(de)(de)(de)(de)九(jiu)大事項：1.試驗電(dian)(dian)壓(ya)(ya)的(de)(de)(de)(de)(de)施加部(bu)(bu)(bu)位是(shi)帶(dai)電(dian)(dian)部(bu)(bu)(bu)件(jian)和殼(ke)體(ti)之間(jian)。對II類電(dian)(dian)器(qi)的(de)(de)(de)(de)(de)施加要在(zai)帶(dai)電(dian)(dian)部(bu)(bu)(bu)件(jian)和僅用基本(ben)絕緣(yuan)與帶(dai)電(dian)(dian)部(bu)(bu)(bu)件(jian)隔開(kai)的(de)(de)(de)(de)(de)部(bu)(bu)(bu)件(jian)之間(jian)，或(huo)者(zhe)是(shi)金屬部(bu)(bu)(bu)件(jian)和殼(ke)體(ti)之間(jian)。對于(yu)家用電(dian)(dian)器(qi)的(de)(de)(de)(de)(de)耐壓(ya)(ya)...

耐壓測試儀|儀器百科

耐力(li)測(ce)(ce)(ce)(ce)試(shi)(shi)儀是(shi)電工常用(yong)的(de)(de)(de)(de)電器(qi)檢測(ce)(ce)(ce)(ce)設備，用(yong)于測(ce)(ce)(ce)(ce)量電器(qi)的(de)(de)(de)(de)工作電源，通過絕(jue)(jue)緣或分布參數阻(zu)抗產(chan)生的(de)(de)(de)(de)與工作無關的(de)(de)(de)(de)泄漏電流,其輸(shu)入(ru)阻(zu)抗模擬人體(ti)的(de)(de)(de)(de)阻(zu)抗，由阻(zu)抗變換、量程轉換、交直流變換、放大、指示裝(zhuang)置(zhi)(zhi)等組成，有的(de)(de)(de)(de)還具(ju)有過流保護、聲光警報電路(lu)和試(shi)(shi)驗電壓(ya)(ya)(ya)調節(jie)裝(zhuang)置(zhi)(zhi),主要用(yong)于電力(li)變壓(ya)(ya)(ya)器(qi)的(de)(de)(de)(de)絕(jue)(jue)緣耐壓(ya)(ya)(ya)測(ce)(ce)(ce)(ce)試(shi)(shi)。耐壓(ya)(ya)(ya)測(ce)(ce)(ce)(ce)試(shi)(shi)儀不但精(jing)度高，而且(qie)(qie)耐力(li)測(ce)(ce)(ce)(ce)試(shi)(shi)儀在(zai)檢測(ce)(ce)(ce)(ce)的(de)(de)(de)(de)時(shi)候(hou)也是(shi)非常可靠的(de)(de)(de)(de)。并且(qie)(qie)它所采(cai)用(yong)的(de)(de)(de)(de)技術也是(shi)非常先(xian)進的(de)(de)(de)(de)，在(zai)檢測(ce)(ce)(ce)(ce)方面可以做(zuo)到(dao)全自動化，大大提(ti)高了人們的(de)(de)(de)(de)工作效率(lv)。耐壓(ya)(ya)(ya)測(ce)(ce)(ce)(ce)試(shi)(shi)儀的(de)(de)(de)(de)原(yuan)理(li)是(shi)把一個高于正常工作的(de)(de)(de)(de)電壓(ya)(ya)(ya)加在(zai)被測(ce)(ce)(ce)(ce)...

工頻耐壓試驗儀的正確操作步驟分享

工(gong)頻耐壓(ya)(ya)試(shi)驗儀(yi)可用(yong)來(lai)檢測(ce)(ce)有(you)關電(dian)(dian)(dian)(dian)氣裝置、電(dian)(dian)(dian)(dian)氣元件、電(dian)(dian)(dian)(dian)氣材料的(de)抗電(dian)(dian)(dian)(dian)強度及漏電(dian)(dian)(dian)(dian)情況。適用(yong)于中(zhong)小型電(dian)(dian)(dian)(dian)機(ji)、高(gao)(gao)壓(ya)(ya)電(dian)(dian)(dian)(dian)機(ji)、低壓(ya)(ya)電(dian)(dian)(dian)(dian)器等產品的(de)檢測(ce)(ce)。具有(you)電(dian)(dian)(dian)(dian)壓(ya)(ya)、電(dian)(dian)(dian)(dian)流數字顯示、擊穿聲(sheng)光報警(jing)、自動斷(duan)開高(gao)(gao)壓(ya)(ya)、手(shou)動復(fu)位、漏電(dian)(dian)(dian)(dian)流直接在高(gao)(gao)壓(ya)(ya)端測(ce)(ce)量等特點。工(gong)頻耐壓(ya)(ya)試(shi)驗儀(yi)為(wei)(wei)單相(xiang)芯式，采用(yong)優(you)質冷軋取向硅鋼(gang)片疊制而成，緊固方(fang)式采用(yong)鋼(gang)材作夾件。高(gao)(gao)壓(ya)(ya)線圈為(wei)(wei)圓筒(tong)多層(ceng)塔式，由優(you)質聚酯漆(qi)包線及高(gao)(gao)耐壓(ya)(ya)值(zhi)絕緣材料繞(rao)制而成。低壓(ya)(ya)線圈在外(wai),儀(yi)表線圈為(wei)(wei)一(yi)獨立繞(rao)組，一(yi)般情況下為(wei)(wei)100V。殼體為(wei)(wei)八角形，10KVA以上的(de)試(shi)驗變(bian)壓(ya)(ya)器裝有(you)可移(yi)動的(de)...

耐壓測試儀的操作使用及安全測試分享

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耐壓測試儀優點在于可以檢測所有的電壓極性

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