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雷電沖擊電壓發生器的工作原理
雷電沖擊電壓發生器的工作原理

雷電(dian)(dian)沖擊電(dian)(dian)壓(ya)發生器的(de)工作原(yuan)理本(ben)發生器適用(yong)于35千伏及以下電(dian)(dian)壓(ya)等(deng)級的(de)空氣間隙,套管、電(dian)(dian)力變壓(ya)器(容量(liang)120MVA及以下)和互(hu)感器等(deng)試品(pin)進行標準雷電(dian)(dian)沖擊電(dian)(dian)壓(ya)全波。使(shi)用(yong)條件海拔高度nbsp;≤1000m環(huan)境溫(wen)度nbsp;-15℃~+50℃相對濕度:≤85%(20℃)使(shi)用(yong)環(huan)境nbsp;戶...

2021-06-15
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  • 絕緣電阻測試儀有哪些特點,你知道嘛?

    智能(neng)絕(jue)緣電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻測(ce)(ce)(ce)試(shi)(shi)儀(yi)是為了解決(jue)高壓變電(dian)(dian)(dian)(dian)(dian)(dian)(dian)站、發電(dian)(dian)(dian)(dian)(dian)(dian)(dian)廠(chang)現(xian)場(chang)強(qiang)(qiang)干(gan)(gan)擾(rao)下對(dui)大(da)型高壓變壓器(qi)、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動機(ji)、發電(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)、長距(ju)離(li)(li)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)力(li)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜、管(guan)型母線等電(dian)(dian)(dian)(dian)(dian)(dian)(dian)氣絕(jue)緣質量(liang)(liang)的評估而(er)設(she)計研(yan)制,儀(yi)表輸(shu)出功率大(da)(6-8mA),實(shi)時電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓測(ce)(ce)(ce)量(liang)(liang)(試(shi)(shi)品實(shi)際帶電(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓)、泄漏電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流測(ce)(ce)(ce)量(liang)(liang)、自動放電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(放電(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓測(ce)(ce)(ce)量(liang)(liang))特(te)別適合大(da)容性試(shi)(shi)品及110kv以上強(qiang)(qiang)力(li)干(gan)(gan)擾(rao)的測(ce)(ce)(ce)試(shi)(shi)現(xian)場(chang)。智能(neng)絕(jue)緣電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻測(ce)(ce)(ce)試(shi)(shi)儀(yi)產品特(te)點:1.光數(shu)字絕(jue)緣電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻測(ce)(ce)(ce)試(shi)(shi)儀(yi)不會產生輻射和電(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁脈沖,抗干(gan)(gan)擾(rao)能(neng)力(li)強(qiang)(qiang),測(ce)(ce)(ce)量(liang)(liang)數(shu)據準確(que)。2.由于光纖是絕(jue)緣體,可有效隔(ge)離(li)(li)高壓(保(bao)障操作人員人身安全),在抑制噪聲...

    202311-17
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  • 聊聊三相微機繼電保護測試儀有哪些特性

    三(san)相微機繼電(dian)(dian)保(bao)(bao)護測試儀(yi)主機采用高速(su)(su)高性能(neng)嵌入式微機系統(tong)配備CPLD,響應速(su)(su)度(du)快,傳輸(shu)頻帶寬,對(dui)基波(bo)(bo)(bo)(bo)可(ke)產生每(mei)周波(bo)(bo)(bo)(bo)500點(dian)的高密度(du)擬合正弦波(bo)(bo)(bo)(bo),輸(shu)出波(bo)(bo)(bo)(bo)形光滑,無(wu)諧波(bo)(bo)(bo)(bo)分量。由于輸(shu)出點(dian)數多,且通(tong)過精確的濾波(bo)(bo)(bo)(bo)電(dian)(dian)路,波(bo)(bo)(bo)(bo)形的失真(zhen)度(du)極小,在(zai)諧波(bo)(bo)(bo)(bo)輸(shu)出時,即使對(dui)9次諧波(bo)(bo)(bo)(bo)、450Hz也可(ke)以達(da)到每(mei)周波(bo)(bo)(bo)(bo)55點(dian)的高密度(du)。而軟件(jian)具有非常強的人機對(dui)話及在(zai)線(xian)幫助功能(neng),可(ke)對(dui)任意(yi)試驗參量實(shi)施(shi)控制。三(san)相微機繼電(dian)(dian)保(bao)(bao)護測試儀(yi)的特性:1.微機繼電(dian)(dian)保(bao)(bao)護測試儀(yi)滿足現(xian)場所有試驗要(yao)求。具有標準的四(si)相電(dian)(dian)壓,三(san)相電(dian)(dian)流(liu)輸(shu)出,電(dian)(dian)壓125V...

    202311-17
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  • 剩余電流發生器在新能源領域的應用與挑戰

    剩余電(dian)(dian)(dian)(dian)(dian)流發生器(qi)作為(wei)一(yi)種關鍵的(de)(de)電(dian)(dian)(dian)(dian)(dian)氣安(an)全設備,在(zai)(zai)新能(neng)(neng)源(yuan)(yuan)領域(yu)中(zhong)(zhong)發揮著重要作用(yong)。一(yi)、在(zai)(zai)新能(neng)(neng)源(yuan)(yuan)領域(yu)的(de)(de)應用(yong)1.光(guang)(guang)伏發電(dian)(dian)(dian)(dian)(dian)系(xi)統(tong)(tong)(tong)(tong)(tong)在(zai)(zai)光(guang)(guang)伏發電(dian)(dian)(dian)(dian)(dian)系(xi)統(tong)(tong)(tong)(tong)(tong)中(zhong)(zhong),主(zhu)要用(yong)于檢測系(xi)統(tong)(tong)(tong)(tong)(tong)的(de)(de)漏(lou)電(dian)(dian)(dian)(dian)(dian)情況,確保(bao)人身安(an)全和設備安(an)全。當系(xi)統(tong)(tong)(tong)(tong)(tong)出(chu)現漏(lou)電(dian)(dian)(dian)(dian)(dian)時,會迅速切(qie)斷電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan),防止觸電(dian)(dian)(dian)(dian)(dian)事故的(de)(de)發生。2.風(feng)力發電(dian)(dian)(dian)(dian)(dian)系(xi)統(tong)(tong)(tong)(tong)(tong)風(feng)力發電(dian)(dian)(dian)(dian)(dian)系(xi)統(tong)(tong)(tong)(tong)(tong)中(zhong)(zhong)同樣(yang)起(qi)到保(bao)護作用(yong)。在(zai)(zai)風(feng)力發電(dian)(dian)(dian)(dian)(dian)機(ji)組的(de)(de)運(yun)行過程(cheng)中(zhong)(zhong),可(ke)(ke)以實時監測系(xi)統(tong)(tong)(tong)(tong)(tong)內的(de)(de)漏(lou)電(dian)(dian)(dian)(dian)(dian)情況,確保(bao)設備和人員的(de)(de)安(an)全。3.儲(chu)能(neng)(neng)系(xi)統(tong)(tong)(tong)(tong)(tong)新能(neng)(neng)源(yuan)(yuan)儲(chu)能(neng)(neng)系(xi)統(tong)(tong)(tong)(tong)(tong)(如鋰離子(zi)電(dian)(dian)(dian)(dian)(dian)池)在(zai)(zai)充放電(dian)(dian)(dian)(dian)(dian)過程(cheng)中(zhong)(zhong)可(ke)(ke)能(neng)(neng)出(chu)現漏(lou)電(dian)(dian)(dian)(dian)(dian)現象,可(ke)(ke)以有效檢測并(bing)切(qie)斷漏(lou)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)路,保(bao)障儲(chu)能(neng)(neng)系(xi)統(tong)(tong)(tong)(tong)(tong)的(de)(de)安(an)...

    202311-16
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  • 聊聊電纜交流耐壓試驗裝置有哪些功能

    電(dian)(dian)纜(lan)交流耐(nai)壓試(shi)(shi)驗(yan)裝(zhuang)(zhuang)置(zhi)(zhi)各(ge)種大(da)型(xing)電(dian)(dian)力(li)變(bian)壓器(qi)、電(dian)(dian)力(li)電(dian)(dian)纜(lan)、汽輪及水輪發(fa)電(dian)(dian)機及其它(ta)容(rong)性設備的(de)(de)(de)(de)交流耐(nai)壓試(shi)(shi)驗(yan)都必須嚴(yan)格按試(shi)(shi)驗(yan)規程定期進行。在(zai)工(gong)頻(pin)條(tiao)件下,由于被試(shi)(shi)品電(dian)(dian)容(rong)量(liang)(liang)較(jiao)大(da),或者試(shi)(shi)驗(yan)電(dian)(dian)壓要(yao)(yao)求較(jiao)高(gao)(gao),對試(shi)(shi)驗(yan)裝(zhuang)(zhuang)置(zhi)(zhi)的(de)(de)(de)(de)電(dian)(dian)源容(rong)量(liang)(liang)相應的(de)(de)(de)(de)也(ye)有較(jiao)高(gao)(gao)的(de)(de)(de)(de)要(yao)(yao)求,傳(chuan)統的(de)(de)(de)(de)工(gong)頻(pin)耐(nai)壓裝(zhuang)(zhuang)置(zhi)(zhi)往(wang)往(wang)單件體積大(da),重量(liang)(liang)重,不便于現場搬(ban)運,而且(qie)不便于任意(yi)組(zu)合,靈(ling)活(huo)性較(jiao)差。電(dian)(dian)纜(lan)交流耐(nai)壓試(shi)(shi)驗(yan)裝(zhuang)(zhuang)置(zhi)(zhi)主要(yao)(yao)功能:(1)電(dian)(dian)抗(kang)器(qi)鐵芯間隙遙測功能:本裝(zhuang)(zhuang)置(zhi)(zhi)在(zai)電(dian)(dian)抗(kang)器(qi)上安裝(zhuang)(zhuang)了間隙傳(chuan)感(gan)器(qi),在(zai)控制臺(tai)上可直接讀出鐵芯的(de)(de)(de)(de)間隙,以(yi)指導操作(zuo),另(ling)外還安裝(zhuang)(zhuang)了間隙限(xian)位(wei)開關及指...

    202311-2
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  • 如何正確操作電纜耐壓試驗設備

    電纜耐壓(ya)試驗(yan)設備(bei)(bei)(bei)試驗(yan)方法:對于大(da)(da)型發電機組、變(bian)壓(ya)器(qi)、GIS、交(jiao)(jiao)聯(lian)電纜等大(da)(da)容量較大(da)(da)的試品的交(jiao)(jiao)流耐壓(ya)試驗(yan),需(xu)要(yao)大(da)(da)容量的試驗(yan)變(bian)壓(ya)器(qi)、調壓(ya)器(qi)以及(ji)電源。現(xian)(xian)場(chang)往(wang)往(wang)難以辦(ban)到,即使有試驗(yan)設備(bei)(bei)(bei),也需(xu)動用(yong)大(da)(da)型汽(qi)車、吊車等,費力費時。在此情況下(xia),可(ke)根據(ju)具(ju)體情況分別采(cai)用(yong)串(chuan)聯(lian)、并聯(lian)或串(chuan)并聯(lian)諧(xie)(xie)(xie)振(zhen)(zhen)的方法來進行現(xian)(xian)場(chang)試驗(yan)。串(chuan)并聯(lian)諧(xie)(xie)(xie)振(zhen)(zhen)可(ke)通過調節電感來實現(xian)(xian),也可(ke)通過調節頻率或電容來實現(xian)(xian)。但該試驗(yan)大(da)(da)多是針(zhen)對現(xian)(xian)場(chang)大(da)(da)電容設備(bei)(bei)(bei)進行的,因而(er)電容是確定(ding)的,一般采(cai)用(yong)調感或調頻來進行諧(xie)(xie)(xie)振(zhen)(zhen)補(bu)償。交(jiao)(jiao)流耐壓(ya)試驗(yan)是對電氣設備(bei)(bei)(bei)絕緣(yuan)外加交(jiao)(jiao)流...

    202311-2
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  • 聊聊電纜耐壓試驗裝置有哪些優勢

    在工頻(pin)條件下,由于被試品電(dian)容(rong)量(liang)較大(da),或者(zhe)試驗(yan)電(dian)壓(ya)(ya)(ya)要求較高,對試驗(yan)裝置的(de)(de)(de)電(dian)源(yuan)容(rong)量(liang)相(xiang)應的(de)(de)(de)也有(you)較高的(de)(de)(de)要求,為了(le)保證(zheng)電(dian)纜安全可靠運行,有(you)關的(de)(de)(de)標準對電(dian)纜的(de)(de)(de)各種試驗(yan)做了(le)明(ming)(ming)確的(de)(de)(de)規定。主(zhu)(zhu)要試驗(yan)項(xiang)目包括(kuo):測(ce)量(liang)絕緣(yuan)(yuan)(yuan)電(dian)阻、直(zhi)流(liu)(liu)耐壓(ya)(ya)(ya)和(he)泄(xie)漏(lou)電(dian)流(liu)(liu)。其(qi)中(zhong)測(ce)量(liang)絕緣(yuan)(yuan)(yuan)電(dian)阻主(zhu)(zhu)要是檢驗(yan)電(dian)纜絕緣(yuan)(yuan)(yuan)是否老化(hua)、受潮以及耐壓(ya)(ya)(ya)試驗(yan)中(zhong)暴露的(de)(de)(de)絕緣(yuan)(yuan)(yuan)缺(que)陷。直(zhi)流(liu)(liu)耐壓(ya)(ya)(ya)和(he)泄(xie)漏(lou)電(dian)流(liu)(liu)試驗(yan)是同步(bu)進行的(de)(de)(de),其(qi)目的(de)(de)(de)是發現(xian)絕緣(yuan)(yuan)(yuan)中(zhong)的(de)(de)(de)缺(que)陷。近年來(lai)國內外的(de)(de)(de)試驗(yan)和(he)運行經驗(yan)證(zheng)明(ming)(ming):直(zhi)流(liu)(liu)耐壓(ya)(ya)(ya)試驗(yan)不能有(you)效地發現(xian)交聯(lian)電(dian)纜中(zhong)的(de)(de)(de)絕緣(yuan)(yuan)(yuan)缺(que)陷,甚至造成電(dian)纜的(de)(de)(de)絕緣(yuan)(yuan)(yuan)隱患。國內也曾多次發...

    202310-23
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  • 礦用電纜壓號機在使用時,需要注意哪些問題

    礦用電(dian)(dian)纜(lan)(lan)壓(ya)號機主要(yao)由(you)支架(jia)(jia)、電(dian)(dian)子(zi)控(kong)溫(wen)系(xi)統(tong)(tong)(tong)、液(ye)壓(ya)合(he)模(mo)系(xi)統(tong)(tong)(tong)、儀表(biao)控(kong)制(zhi)板、加(jia)(jia)熱板等(deng)組(zu)成。支架(jia)(jia)是本機的(de)主體構件(jian),加(jia)(jia)熱板和電(dian)(dian)控(kong)系(xi)統(tong)(tong)(tong)、液(ye)壓(ya)合(he)模(mo)系(xi)統(tong)(tong)(tong)都(dou)安(an)裝在支架(jia)(jia)上,它由(you)型鋼(gang)焊接組(zu)成,底部安(an)有(you)萬向輪,可以在工作場地自由(you)移動(dong)(dong),電(dian)(dian)控(kong)系(xi)統(tong)(tong)(tong)設有(you)自動(dong)(dong)升溫(wen)、降(jiang)溫(wen)、數字(zi)顯示溫(wen)度等(deng)功能,液(ye)壓(ya)合(he)模(mo)保(bao)證電(dian)(dian)纜(lan)(lan)壓(ya)號過程中所需(xu)的(de)壓(ya)力,儀表(biao)控(kong)制(zhi)板設有(you)電(dian)(dian)壓(ya)表(biao)、電(dian)(dian)流(liu)表(biao)、指示燈、旋鈕(niu)開(kai)關(guan)、按鈕(niu)開(kai)關(guan)、繼(ji)電(dian)(dian)器(qi)、數顯儀表(biao)、熔(rong)斷器(qi)、交流(liu)接觸器(qi)等(deng)元(yuan)件(jian)組(zu)成。加(jia)(jia)熱板是其主要(yao)機件(jian),板內裝有(you)加(jia)(jia)熱管,來供應電(dian)(dian)纜(lan)(lan)壓(ya)號所需(xu)的(de)熱能,壓(ya)號字(zi)盤放在加(jia)(jia)熱板的(de)...

    202310-23
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  • 電纜交流耐壓測試設備的構成

    構(gou)成:主要(yao)由調頻(pin)電(dian)(dian)(dian)(dian)源主機、電(dian)(dian)(dian)(dian)抗器(qi)(qi)(qi)、分(fen)壓(ya)(ya)器(qi)(qi)(qi)、激勵(li)變(bian)壓(ya)(ya)器(qi)(qi)(qi)和補償電(dian)(dian)(dian)(dian)容器(qi)(qi)(qi)(可選器(qi)(qi)(qi)件)組成,接(jie)入被(bei)試(shi)品后組成一個諧振系(xi)統進行(xing)交流(liu)耐(nai)壓(ya)(ya)試(shi)驗。主機:就是一臺幅值和頻(pin)率可調的正弦波交流(liu)調頻(pin)電(dian)(dian)(dian)(dian)源,給諧振回路提(ti)供激勵(li)源,同(tong)時提(ti)供電(dian)(dian)(dian)(dian)壓(ya)(ya)顯示、電(dian)(dian)(dian)(dian)流(liu)顯示、計(ji)時、保(bao)護、報警等功(gong)能。電(dian)(dian)(dian)(dian)抗器(qi)(qi)(qi):就是一個大電(dian)(dian)(dian)(dian)感線圈(quan),與被(bei)試(shi)品(相(xiang)當(dang)于電(dian)(dian)(dian)(dian)容)構(gou)成串聯(lian)(lian)諧振回路,可配(pei)置電(dian)(dian)(dian)(dian)抗器(qi)(qi)(qi)多節電(dian)(dian)(dian)(dian)抗器(qi)(qi)(qi),使(shi)用(yong)時通(tong)過不同(tong)的串聯(lian)(lian)、并聯(lian)(lian)組合、實現不同(tong)的電(dian)(dian)(dian)(dian)感量(liang)以(yi)適(shi)用(yong)不同(tong)的試(shi)驗條件。分(fen)壓(ya)(ya)器(qi)(qi)(qi):內部通(tong)過電(dian)(dian)(dian)(dian)容器(qi)(qi)(qi)分(fen)壓(ya)(ya),從試(shi)品上(shang)高電(dian)(dian)(dian)(dian)壓(ya)(ya)分(fen)得低電(dian)(dian)(dian)(dian)壓(ya)(ya)供主機測量(liang)、控...

    20239-6
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  • 單相大電流發生器與三相大電流發生器的比較

    單(dan)相(xiang)大電(dian)流發(fa)(fa)生器(qi)和(he)(he)三(san)(san)(san)(san)相(xiang)大電(dian)流發(fa)(fa)生器(qi)是廣(guang)泛應(ying)(ying)用(yong)于(yu)(yu)(yu)電(dian)力系統和(he)(he)工業領域的(de)重要(yao)設備。在(zai)電(dian)力傳輸(shu)和(he)(he)工業應(ying)(ying)用(yong)中(zhong),需要(yao)大電(dian)流供(gong)(gong)應(ying)(ying)以驅動高功(gong)率設備。為(wei)滿足這種需求,這兩款發(fa)(fa)生器(qi)成為(wei)常見選擇。雖然它們都可以提(ti)供(gong)(gong)大電(dian)流輸(shu)出,但在(zai)設計(ji)、應(ying)(ying)用(yong)和(he)(he)性能方(fang)面(mian)存在(zai)一(yi)些(xie)差異。1.設計(ji)結構和(he)(he)原理(li):單(dan)相(xiang)采(cai)用(yong)單(dan)個相(xiang)線(xian)來提(ti)供(gong)(gong)電(dian)流輸(shu)出,通(tong)常包(bao)括一(yi)個發(fa)(fa)電(dian)機和(he)(he)附屬的(de)控制和(he)(he)保護系統。而三(san)(san)(san)(san)相(xiang)則基于(yu)(yu)(yu)三(san)(san)(san)(san)相(xiang)電(dian)力系統的(de)原理(li),通(tong)過三(san)(san)(san)(san)條相(xiang)線(xian)分別提(ti)供(gong)(gong)電(dian)流輸(shu)出。三(san)(san)(san)(san)相(xiang)的(de)設計(ji)更為(wei)復(fu)雜,但能夠提(ti)供(gong)(gong)更穩定的(de)電(dian)力供(gong)(gong)應(ying)(ying)。2.輸(shu)出功(gong)率和(he)(he)電(dian)壓:單(dan)相(xiang)適(shi)用(yong)于(yu)(yu)(yu)低功(gong)...

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    可(ke)調(diao)電(dian)(dian)(dian)(dian)(dian)(dian)流升(sheng)流器是(shi)一(yi)種電(dian)(dian)(dian)(dian)(dian)(dian)子設(she)(she)備,用于將輸(shu)(shu)入(ru)(ru)電(dian)(dian)(dian)(dian)(dian)(dian)流增加到更高(gao)的(de)(de)(de)輸(shu)(shu)出電(dian)(dian)(dian)(dian)(dian)(dian)流水平,可(ke)以(yi)將輸(shu)(shu)入(ru)(ru)電(dian)(dian)(dian)(dian)(dian)(dian)壓提升(sheng)至更高(gao)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)壓,并且其輸(shu)(shu)出電(dian)(dian)(dian)(dian)(dian)(dian)流可(ke)以(yi)高(gao)于輸(shu)(shu)入(ru)(ru)電(dian)(dian)(dian)(dian)(dian)(dian)流。通常(chang)由一(yi)個開關管(guan)、電(dian)(dian)(dian)(dian)(dian)(dian)感和電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)組(zu)成,采(cai)用特(te)定(ding)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)設(she)(she)計(ji)和控(kong)制(zhi)(zhi)算(suan)法(fa),能夠根據需求(qiu)實時調(diao)整(zheng)輸(shu)(shu)出電(dian)(dian)(dian)(dian)(dian)(dian)流的(de)(de)(de)大小,實現對電(dian)(dian)(dian)(dian)(dian)(dian)流信(xin)號的(de)(de)(de)準(zhun)確控(kong)制(zhi)(zhi)。由以(yi)下幾個主要部分組(zu)成:1.控(kong)制(zhi)(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu):控(kong)制(zhi)(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)負責接收輸(shu)(shu)入(ru)(ru)的(de)(de)(de)控(kong)制(zhi)(zhi)信(xin)號,并根據信(xin)號進行計(ji)算(suan)和處理(li),以(yi)控(kong)制(zhi)(zhi)輸(shu)(shu)出電(dian)(dian)(dian)(dian)(dian)(dian)流的(de)(de)(de)大小和穩定(ding)性。這些控(kong)制(zhi)(zhi)信(xin)號可(ke)以(yi)通過手動設(she)(she)置、外部控(kong)制(zhi)(zhi)信(xin)號或者自動反饋機(ji)制(zhi)(zhi)來提供。2.升(sheng)壓電(dian)(dian)(dian)(dian)(dian)(dian)路(lu):升(sheng)壓電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)將輸(shu)(shu)入(ru)(ru)...

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  • 如何使用大電流發生器

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  • 電流溫升試驗裝置的使用及注意事項

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    20237-11
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