
13730588865
文章(zhang)來(lai)源: 時間:2016/05/02
加重錘(chui)片金(jin)具之原因:
有(you)級(同音)繼電器即是四線(xian)制道岔(cha)啟動電路(lu)中2道岔(cha)啟動繼電器,其具有(you)定(ding)位(wei)和反(fan)位(wei)兩個穩定(ding)狀(zhuang)(zhuang)態(tai)(±級),在通以正向或反(fan)向電流時,使繼電器接點(dian)系(xi)統分別處于兩個狀(zhuang)(zhuang)態(tai)中的(de)一個狀(zhuang)(zhuang)態(tai),正向吸起接點(dian)閉合(he)或反(fan)向打落接點(dian)閉合(he),使用長條型磁(ci)鐵(tie)代替了部分軛鐵(tie),由(you)于磁(ci)鐵(tie)的(de)磁(ci)力,線(xian)圈斷電,接點(dian)系(xi)統仍(reng)保持在斷電前的(de)狀(zhuang)(zhuang)態(tai),即定(ding)位(wei)吸起狀(zhuang)(zhuang)態(tai)勵(li)磁(ci)電路(lu),反(fan)位(wei)打落狀(zhuang)(zhuang)態(tai)勵(li)磁(ci)電路(lu).
偏級(ji)繼(ji)電(dian)(dian)(dian)(dian)器是四線制道岔啟動電(dian)(dian)(dian)(dian)路中定位(wei)表(biao)示繼(ji)電(dian)(dian)(dian)(dian)器和反位(wei)表(biao)示繼(ji)電(dian)(dian)(dian)(dian)器,其可鑒別電(dian)(dian)(dian)(dian)流(liu)(liu)的(de)級(ji)性,在電(dian)(dian)(dian)(dian)路通以正向電(dian)(dian)(dian)(dian)流(liu)(liu)時(shi)前接(jie)點閉(bi)合,無電(dian)(dian)(dian)(dian)或通以反向電(dian)(dian)(dian)(dian)流(liu)(liu)時(shi),繼(ji)電(dian)(dian)(dian)(dian)器均(jun)不動作.
直流無級繼電器即是信號機點燈電路中的信號繼電器,當給線圈通以標定的工作電流,電磁鐵勵磁帶動接點系統,使前接點與中接點閉合,線圈斷電或電流下降達不到規定數值,靠接點簧 片彈力和重錘片重力使中接點與前接點斷開,與后接點閉合,使用或加重錘片是為了從結構上保證繼電器接點可靠閉合或斷開。
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