繼電器的測試方法

來源:未知???作者:上繼(ji) ???發布(bu)時(shi)間(jian): 2017-08-09 14:18???瀏(liu)覽: 965

繼電器的測試方法

1、測觸點電(dian)阻

用萬能表的電阻檔，測(ce)量常(chang)閉(bi)觸(chu)點與(yu)動(dong)點電阻，其阻值應為(wei)0;而常(chang)開觸(chu)點與(yu)動(dong)點的阻值就為(wei)無窮(qiong)大。由此可以(yi)區(qu)別出那(nei)個(ge)是常(chang)閉(bi)觸(chu)點，那(nei)個(ge)是常(chang)開觸(chu)點。

2、測(ce)線(xian)圈電(dian)阻

可用萬能表R×10Ω檔測量繼電器線圈(quan)的阻值(zhi)，從(cong)而判斷(duan)該線圈(quan)是(shi)否存(cun)在(zai)著開路現(xian)象。

3、測量吸合電壓和(he)吸合電流

找(zhao)來可調(diao)穩壓(ya)電(dian)源和(he)電(dian)流表，給繼電(dian)器(qi)輸入(ru)一組電(dian)壓(ya)，且在(zai)供電(dian)回路中串入(ru)電(dian)流表進行(xing)監測(ce)。慢慢調(diao)高(gao)電(dian)源電(dian)壓(ya)，聽到繼電(dian)器(qi)吸合(he)聲時，記下該吸合(he)電(dian)壓(ya)和(he)吸合(he)電(dian)流。為(wei)求(qiu)準確，可以試(shi)多幾(ji)次而求(qiu)平均值。

4、測量釋放電壓(ya)和(he)釋放電流

也(ye)是像(xiang)上述那樣連接測試，當繼電(dian)(dian)(dian)器發生吸(xi)合(he)后，再逐漸降低供電(dian)(dian)(dian)電(dian)(dian)(dian)壓，當聽到(dao)繼電(dian)(dian)(dian)器再次發生釋(shi)(shi)放(fang)聲(sheng)音(yin)時，記下此時的電(dian)(dian)(dian)壓和電(dian)(dian)(dian)流，亦可(ke)嘗試多(duo)幾次而取得(de)平(ping)均(jun)的釋(shi)(shi)放(fang)電(dian)(dian)(dian)壓和釋(shi)(shi)放(fang)電(dian)(dian)(dian)流。一般情況下，繼電(dian)(dian)(dian)器的釋(shi)(shi)放(fang)電(dian)(dian)(dian)壓約在(zai)吸(xi)合(he)電(dian)(dian)(dian)壓的10~50%，如(ru)果釋(shi)(shi)放(fang)電(dian)(dian)(dian)壓太小(xiao)(小(xiao)于(yu)1/10的吸(xi)合(he)電(dian)(dian)(dian)壓)，則不能正常使用(yong)了(le)，這樣會(hui)對電(dian)(dian)(dian)路的穩(wen)定(ding)性(xing)造成(cheng)威脅。

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