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技術(shù)文章您的位置:網(wǎng)站首頁(yè) >技術(shù)文章 >繼電器的測試方法

繼電器的測試方法

更新時(shí)間:2024-05-11   點(diǎn)擊次數:316次

 

 1.測量觸點(diǎn)電阻

用萬(wàn)用表的電阻檔測量常閉觸點(diǎn)和動(dòng)點(diǎn)的電阻,其電阻值應為0;常開(kāi)觸點(diǎn)和動(dòng)點(diǎn)的電阻是無(wú)窮大。它可以與常閉觸點(diǎn)和常開(kāi)觸點(diǎn)區分開(kāi)來(lái)。


2.測量線(xiàn)圈電阻

用萬(wàn)用表的R×10Ω可以測量繼電器線(xiàn)圈的電阻值,從而判斷線(xiàn)圈中是否有開(kāi)路。


3.測量吸合電壓和吸合電流

找一個(gè)可調穩壓電源和電流表,給繼電器輸入一組電壓,將電流表串在電源電路中進(jìn)行監控。慢慢增加電源電壓,聽(tīng)到繼電器的吸合聲時(shí),記錄吸合電壓和電流。為了精確,你可以嘗試幾次來(lái)得到平均值。


4.測量放電電壓和電流。

這也是如上所述的連接測試。當繼電器被拉進(jìn)時(shí),電源電壓逐漸降低。當繼電器再次釋放時(shí),記下此時(shí)的電壓和電流,試幾次得到平均釋放電壓和電流。正常情況下,繼電器的釋放電壓約為吸合電壓的10~50%。如果釋放電壓太小(小于吸合電壓的1/10),就不能正常使用,會(huì )威脅電路的穩定性。

 

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