RS121多功(gong)能插入式延時繼(ji)(ji)(ji)電器(qi)(qi)可無(wu)電勢觸(chu)發或PNP/NPN傳(chuan)感器(qi)(qi)，與插座C11A插座連接。延時繼(ji)(ji)(ji)電器(qi)(qi)主(zhu)要用于直流或交流操作的(de)各種保(bao)護和自(zi)(zi)動控制線路中(zhong)，作為輔助繼(ji)(ji)(ji)電器(qi)(qi)，以增加觸(chu)點(dian)數量和觸(chu)點(dian)容量。可根(gen)據需要自(zi)(zi)由(you)調(diao)節延時的(de)時間。

繼電器測試

1、測線圈電阻

萬用表R×10W檔測(ce)量繼電器線圈的阻(zu)值，從(cong)而判斷該線圈是否存在著開路現象

2、測觸點電阻

用萬用表的(de)電(dian)阻(zu)檔，測量常閉(bi)觸點(dian)與動(dong)點(dian)電(dian)阻(zu)，其阻(zu)值應(ying)為0；而(er)常開(kai)觸點(dian)與動(dong)點(dian)的(de)阻(zu)值就(jiu)為無窮(qiong)大。

3、測量吸(xi)合(he)電(dian)壓和吸(xi)合(he)電(dian)流

用可調(diao)穩壓電(dian)(dian)源和(he)電(dian)(dian)流(liu)(liu)(liu)表，給繼電(dian)(dian)器(qi)輸入一組電(dian)(dian)壓且在(zai)供電(dian)(dian)回路中串入電(dian)(dian)流(liu)(liu)(liu)表進行(xing)監測。慢(man)慢(man)調(diao)高電(dian)(dian)源電(dian)(dian)壓，聽到(dao)繼電(dian)(dian)器(qi)吸合(he)聲(sheng)時，記下該吸合(he)電(dian)(dian)壓和(he)吸合(he)電(dian)(dian)流(liu)(liu)(liu)。

4、測量(liang)釋放電壓和釋放電流

像(xiang)上述(shu)那樣連(lian)接測(ce)試(shi)，當(dang)繼電(dian)(dian)(dian)器發(fa)生(sheng)吸合后，再降(jiang)低(di)供電(dian)(dian)(dian)電(dian)(dian)(dian)壓(ya)，當(dang)聽到繼電(dian)(dian)(dian)器再次發(fa)生(sheng)釋放(fang)聲音時，記下的(de)(de)電(dian)(dian)(dian)壓(ya)和(he)電(dian)(dian)(dian)流(liu)(liu)，亦可嘗試(shi)多幾次而(er)取(qu)得平均的(de)(de)釋放(fang)電(dian)(dian)(dian)壓(ya)和(he)釋放(fang)電(dian)(dian)(dian)流(liu)(liu)。