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Maintenance & Repair

交流电动机不能启动的检修技巧

Updated Date :2024-04-28 Views :
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交流电动机不能启动的检修技巧

要诀

交流电机不启动,先看元件是否熔,

检查接线是否通,查看原理无错成,

原理错误快纠正,接线跟着也变更;

表测电压低不行,修复故障电压中,

绕组断路用表整,容量不合要换型。

image.png

按下启动按钮,交流电动机不能启动,经检查电动机无元件烧毁。其故障检修技巧如下:

(1)控制回路接线断路。应检查各个开关、接触器、热继电器等主回路元件及负载接线是否牢靠,若有接触不良,应进行重新接线。

(2)检查控制回路接线是否有原理性错误或接线不通,应按原理图进行检查。

(3)电源电压过低。若用万用表测量电网电压过低,查出故障原因修复来提高电压。

(4)检查定子绕组或转子绕组是否断路。用表测量定子或转子绕组的电阻阻值,若为无穷大,则表明断路。若电动机有一相断路将无法启动。

(5)主开关与电动机容量不匹配,导致交流电动机异常无法带动负载。


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