YT10000E伊藤發電機
 

在(zai)拖拉機(ji)(ji)上的(de)(de)發(fa)電(dian)(dian)(dian)機(ji)(ji)是由發(fa)動機(ji)(ji)帶動的(de)(de)，所以(yi)轉(zhuan)動方(fang)(fang)向是一(yi)定(ding)的(de)(de)，在(zai)檢修(xiu)時若將發(fa)電(dian)(dian)(dian)機(ji)(ji)反向旋轉(zhuan)就不發(fa)電(dian)(dian)(dian)，這是因為正轉(zhuan)時電(dian)(dian)(dian)樞線(xian)圈(quan)在(zai)磁(ci)場(chang)(chang)的(de)(de)作(zuo)用下感應出(chu)的(de)(de)電(dian)(dian)(dian)流(liu)經調(diao)節器與激(ji)磁(ci)線(xian)圈(quan)相(xiang)通(tong)(tong)。激(ji)磁(ci)線(xian)圈(quan)通(tong)(tong)電(dian)(dian)(dian)后(hou)的(de)(de)磁(ci)場(chang)(chang)方(fang)(fang)向與鐵芯(xin)剩磁(ci)方(fang)(fang)向相(xiang)同(tong)，因而(er)磁(ci)場(chang)(chang)不斷增強(qiang)，電(dian)(dian)(dian)壓迅(xun)速(su)升高。反轉(zhuan)時電(dian)(dian)(dian)流(liu)方(fang)(fang)向與正轉(zhuan)時相(xiang)反，使激(ji)磁(ci)線(xian)圈(quan)通(tong)(tong)電(dian)(dian)(dian)后(hou)的(de)(de)磁(ci)場(chang)(chang)方(fang)(fang)向與鐵芯(xin)剩磁(ci)方(fang)(fang)向相(xiang)反，磁(ci)場(chang)(chang)越來越弱，使發(fa)電(dian)(dian)(dian)機(ji)(ji)不能發(fa)電(dian)(dian)(dian)。

當(dang)發(fa)電(dian)(dian)機(ji)(ji)電(dian)(dian)樞(shu)(shu)不經負載(zai)短路時，發(fa)電(dian)(dian)場(chang)是不會燒(shao)壞的(de)(de)。這是因為拖拉機(ji)(ji)上使用的(de)(de)直流(liu)發(fa)電(dian)(dian)機(ji)(ji)均為并激式。發(fa)電(dian)(dian)機(ji)(ji)于額定功(gong)率(lv)下(xia)工作(zuo)時，電(dian)(dian)樞(shu)(shu)繞組產生(sheng)的(de)(de)電(dian)(dian)流(liu)大部(bu)分(fen)輸(shu)向(xiang)外電(dian)(dian)路，小(xiao)部(bu)分(fen)輸(shu)入激磁(ci)繞組產生(sheng)磁(ci)場(chang)。當(dang)電(dian)(dian)樞(shu)(shu)接(jie)線柱(zhu)與(yu)機(ji)(ji)殼短路時，發(fa)電(dian)(dian)機(ji)(ji)電(dian)(dian)流(liu)迅速增(zeng)大，此時在電(dian)(dian)機(ji)(ji)內產生(sheng)很(hen)大的(de)(de)壓降(jiang)(jiang)和強烈的(de)(de)電(dian)(dian)樞(shu)(shu)反(fan)應，使輸(shu)出的(de)(de)電(dian)(dian)壓急劇(ju)下(xia)降(jiang)(jiang)，激磁(ci)電(dian)(dian)流(liu)迅速消失，發(fa)電(dian)(dian)機(ji)(ji)電(dian)(dian)壓趨近于零。因此，當(dang)電(dian)(dian)樞(shu)(shu)接(jie)線柱(zhu)與(yu)機(ji)(ji)殼短路時不會燒(shao)壞發(fa)電(dian)(dian)機(ji)(ji)。

YT10000E伊藤發電機
 

【公司名稱】：上海伊謄實業有限責任公司
【品牌名稱】：伊藤動力
【】：歐陽春
【】： 
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【電子】：2880675608
【在線】：2880675608
【公司地址】：上海市嘉定區昌吉路大眾創意園
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YT10000E伊藤發電機
 

在使(shi)用中有(you)時(shi)(shi)發現發電(dian)(dian)(dian)機極(ji)(ji)(ji)性突然(ran)改(gai)(gai)變(bian)(bian)的(de)(de)(de)(de)現象(xiang)（即(ji)發出的(de)(de)(de)(de)電(dian)(dian)(dian)流方(fang)(fang)(fang)(fang)向(xiang)(xiang)改(gai)(gai)變(bian)(bian)）。這(zhe)(zhe)是(shi)因為輸出電(dian)(dian)(dian)流驟然(ran)增(zeng)大時(shi)(shi)，電(dian)(dian)(dian)機內部強(qiang)烈的(de)(de)(de)(de)電(dian)(dian)(dian)樞反應使(shi)鐵(tie)(tie)芯(xin)剩磁(ci)(ci)方(fang)(fang)(fang)(fang)向(xiang)(xiang)改(gai)(gai)變(bian)(bian)而引起。遇到這(zhe)(zhe)種(zhong)情況必須將(jiang)其改(gai)(gai)變(bian)(bian)過來，才能使(shi)充電(dian)(dian)(dian)電(dian)(dian)(dian)路正(zheng)常工作。改(gai)(gai)變(bian)(bian)的(de)(de)(de)(de)方(fang)(fang)(fang)(fang)法是(shi)：將(jiang)蓄電(dian)(dian)(dian)池(chi)正(zheng)極(ji)(ji)(ji)與機殼連接(jie)，負極(ji)(ji)(ji)與磁(ci)(ci)場(chang)接(jie)線柱相觸2—3秒，即(ji)能改(gai)(gai)變(bian)(bian)磁(ci)(ci)極(ji)(ji)(ji)鐵(tie)(tie)芯(xin)的(de)(de)(de)(de)剩磁(ci)(ci)方(fang)(fang)(fang)(fang)向(xiang)(xiang)。（在正(zheng)極(ji)(ji)(ji)搭鐵(tie)(tie)的(de)(de)(de)(de)系(xi)統中）。有(you)時(shi)(shi)，在檢修中用蓄電(dian)(dian)(dian)池(chi)做(zuo)電(dian)(dian)(dian)源，用跳火花法檢查(cha)激磁(ci)(ci)線圈故障時(shi)(shi)，如(ru)不注(zhu)意連接(jie)的(de)(de)(de)(de)極(ji)(ji)(ji)性，把蓄電(dian)(dian)(dian)池(chi)負極(ji)(ji)(ji)當成搭鐵(tie)(tie)極(ji)(ji)(ji)，改(gai)(gai)變(bian)(bian)了激磁(ci)(ci)線圈的(de)(de)(de)(de)電(dian)(dian)(dian)流方(fang)(fang)(fang)(fang)向(xiang)(xiang)，從而使(shi)鐵(tie)(tie)芯(xin)剩磁(ci)(ci)方(fang)(fang)(fang)(fang)向(xiang)(xiang)改(gai)(gai)變(bian)(bian)了。由于剩磁(ci)(ci)方(fang)(fang)(fang)(fang)向(xiang)(xiang)的(de)(de)(de)(de)改(gai)(gai)變(bian)(bian)，則發電(dian)(dian)(dian)機電(dian)(dian)(dian)壓極(ji)(ji)(ji)性也隨之改(gai)(gai)變(bian)(bian)。這(zhe)(zhe)是(shi)應當注(zhu)意的(de)(de)(de)(de)。

一(yi)般的直流(liu)(liu)(liu)(liu)發電(dian)機(ji)整流(liu)(liu)(liu)(liu)子(zi)銅(tong)片(pian)間(jian)的云(yun)(yun)(yun)母(mu)片(pian)都低于銅(tong)片(pian)。這(zhe)(zhe)是因為銅(tong)片(pian)比云(yun)(yun)(yun)母(mu)片(pian)磨(mo)損速度快，使用(yong)一(yi)段時間(jian)云(yun)(yun)(yun)母(mu)片(pian)就會(hui)高(gao)出(chu)整流(liu)(liu)(liu)(liu)子(zi)銅(tong)片(pian)，使碳刷懸空。這(zhe)(zhe)樣(yang)整流(liu)(liu)(liu)(liu)子(zi)和碳刷之間(jian)就會(hui)出(chu)現(xian)強烈火花。為避免此現(xian)象，整流(liu)(liu)(liu)(liu)子(zi)車光后應用(yong)鋸片(pian)將(jiang)云(yun)(yun)(yun)母(mu)割(ge)低于整流(liu)(liu)(liu)(liu)子(zi)銅(tong)片(pian)0.8毫米左右。但(dan)有的直流(liu)(liu)(liu)(liu)發電(dian)機(ji)如(ru)ZF—28型和ZF—33型，整流(liu)(liu)(liu)(liu)子(zi)銅(tong)片(pian)間(jian)采用(yong)人工云(yun)(yun)(yun)母(mu)，它與銅(tong)片(pian)磨(mo)損速度相近，故出(chu)廠時未將(jiang)云(yun)(yun)(yun)母(mu)片(pian)割(ge)低，檢修(xiu)這(zhe)(zhe)種發電(dian)機(ji)就不需(xu)割(ge)低。