來源:未知???作者:上繼(ji) ???發布時間: 2017-08-09 14:18???瀏覽: 614
繼電器的測試方法
1、測觸點電阻(zu)
用萬(wan)能表的電阻檔，測量常閉觸(chu)點(dian)與(yu)動(dong)點(dian)電阻，其(qi)阻值(zhi)應(ying)為(wei)0;而(er)常開觸(chu)點(dian)與(yu)動(dong)點(dian)的阻值(zhi)就為(wei)無窮大。由此可以區別出那個是常閉觸(chu)點(dian)，那個是常開觸(chu)點(dian)。
2、測線圈電(dian)阻
可用萬能表R×10Ω檔測量繼(ji)電器(qi)線圈的阻(zu)值，從而判斷該線圈是否存在著開路現象。
3、測量吸合電壓(ya)和吸合電流
找來可(ke)調(diao)穩壓(ya)(ya)電(dian)(dian)(dian)(dian)源和(he)電(dian)(dian)(dian)(dian)流表，給繼(ji)(ji)電(dian)(dian)(dian)(dian)器輸入一組電(dian)(dian)(dian)(dian)壓(ya)(ya)，且在供電(dian)(dian)(dian)(dian)回路中(zhong)串入電(dian)(dian)(dian)(dian)流表進行(xing)監(jian)測。慢(man)慢(man)調(diao)高(gao)電(dian)(dian)(dian)(dian)源電(dian)(dian)(dian)(dian)壓(ya)(ya)，聽到繼(ji)(ji)電(dian)(dian)(dian)(dian)器吸(xi)合(he)聲時，記下該吸(xi)合(he)電(dian)(dian)(dian)(dian)壓(ya)(ya)和(he)吸(xi)合(he)電(dian)(dian)(dian)(dian)流。為求準確，可(ke)以試多幾次而(er)求平均值。
4、測量釋放(fang)電(dian)壓和釋放(fang)電(dian)流
也是像上述那(nei)樣連(lian)接測試，當繼(ji)電(dian)(dian)(dian)器發(fa)生(sheng)吸合(he)后(hou)，再(zai)逐漸降(jiang)低(di)供電(dian)(dian)(dian)電(dian)(dian)(dian)壓(ya)(ya)(ya)，當聽到繼(ji)電(dian)(dian)(dian)器再(zai)次發(fa)生(sheng)釋放(fang)(fang)(fang)聲音(yin)時，記下此時的電(dian)(dian)(dian)壓(ya)(ya)(ya)和(he)(he)電(dian)(dian)(dian)流，亦可嘗試多幾次而取得平(ping)均的釋放(fang)(fang)(fang)電(dian)(dian)(dian)壓(ya)(ya)(ya)和(he)(he)釋放(fang)(fang)(fang)電(dian)(dian)(dian)流。一般情況下，繼(ji)電(dian)(dian)(dian)器的釋放(fang)(fang)(fang)電(dian)(dian)(dian)壓(ya)(ya)(ya)約在吸合(he)電(dian)(dian)(dian)壓(ya)(ya)(ya)的10~50%，如(ru)果(guo)釋放(fang)(fang)(fang)電(dian)(dian)(dian)壓(ya)(ya)(ya)太小(xiao)(小(xiao)于1/10的吸合(he)電(dian)(dian)(dian)壓(ya)(ya)(ya))，則不能正常使(shi)用(yong)了，這樣會對電(dian)(dian)(dian)路的穩定(ding)性造成威脅。
