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如何快速测出电线电缆断点电声器件短笛碗筷架工业空调橡胶助剂Frc

发布时间:2023-12-18 20:27:24 阅读: 来源:电子表厂家

如何快速测出电线电缆断点 ?

首先要把有断点的电线(电缆)一端接在220V市电的火线上,另一端悬空。将数字万用表拔至AC2V挡,从电线(电缆)的火线接入端开始,用一只手捏住黑表笔的笔尖,另一只手将红表笔沿导线的绝缘皮慢慢移动,此时显示屏显示的电压值大约为0.445V左右。当红表笔移动到某处时,显示屏显示的电压突然下降到0.0几伏(大约是原来电压的十分之一),从该位置向前(火线接入端)的大约15cm处即是电线(电缆)断点所在。

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portant; word-wrap: break-word !important; clear: both; min-height: 1em;">portant; word-wrap: break-word !important; font-size: 14px;">当电线电缆的内部出现断线故障时,由于外部绝缘皮的包裹,使断线的确切位置不易确定,所以我们需要找出有断点的一根电线,然后就可以找到确切的断点了。

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portant; word-wrap: break-word !important; clear: both; min-height: 1em;">portant; word-wrap: break-word !important; font-size: 14px;">如图,如果一条电线AB上有一处断的地方,怎样快速找到断点?

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portant; word-wrap: break-word !important; clear: both; min-height: 1em;">portant; word-wrap: break-word !important; font-size: 14px;">可以先找到AB的中点C,测量AC和BC是不是通,如果AC不通,说明断点在AC之间,然后再找到AC的中点D,分别测量AD和CD之间是否通电,如果AD不通,说明断点在AC之间,再找到AD的中点E,分别测量AE和DE之间是否通电 这样,经过n次的测量,就可以把断点确定长的n 21 范围之内。

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portant; word-wrap: break-word !important; clear: both; min-height: 1em;">portant; word-wrap: break-word !important; font-size: 14px;">下面给大家介绍几种准确快速测出电线电缆断线点的测量方法:

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portant; word-wrap: break-word !important; clear: both; min-height: 1em;">portant; word-wrap: break-word !important; font-size: 14px;">电线电缆的测试方法如上图所示分为三种:

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portant; word-wrap: break-word !important; clear: both; min-height: 1em;">portant; word-wrap: break-word !important; font-size: 14px;">第一种是无损伤电线电缆的检测方法

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portant; word-wrap: break-word !important; clear: both; min-height: 1em;">portant; word-wrap: break-word !important; font-size: 14px;">第二种是有损伤电线电缆的检测方法

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portant; word-wrap: break-word !important; clear: both; min-height: 1em;">portant; word-wrap: break-word !important; font-size: 14px;">第三种是使用仪器检测方法

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portant; word-wrap: break-word !important;">portant; word-wrap: break-word !important; text-align: center;">portant; word-wrap: break-word !important; font-family: 微软雅黑; font-size: 14px;">portant; word-wrap: break-word !important;">portant; word-wrap: break-word !important; color: rgb(255, 255, 255); box-shadow: rgb(165, 165, 165) 4px 4px 2px; background-color: rgb(0, 187, 236);">无损伤电线电缆的检测方法

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portant; word-wrap: break-word !important; clear: both; min-height: 1em;">portant; word-wrap: break-word !important;">portant; word-wrap: break-word !important; font-size: 14px; color: rgb(0, 82, 255);">1、使用数字万用表检测法:

portant; word-wrap: break-word !important; clear: both; min-height: 1em;">portant; word-wrap: break-word !important; font-size: 14px;">PS:数字万用表除了可以进行电压、电流、电阻、电容和晶体管等基本参数的测量外,还可以通过变通使用,使其功能得到进一步拓展,达到一表多用的目的。用数字万用表检测电线电缆断点的具体方法:

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portant; word-wrap: break-word !important; clear: both; min-height: 1em;">portant; word-wrap: break-word !important; font-size: 14px;">首先要把有断点的电线(电缆)一端接在220V市电的火线上,另一端悬空。将数字万用表拔至AC2V挡,从电线(电缆)的火线接入端开始,用一只手捏住黑表笔的笔尖,另一只手将红表笔沿导线的绝缘皮慢慢移动,此时显示屏显示的电压值大约为0.445V左右。当红表笔移动到某处时,显示屏显示的电压突然下降到0.0几伏(大约是原来电压的十分之一),从该位置向前(火线接入端)的大约15cm处即是电线(电缆)断点所在。

portant; word-wrap: break-word !important; clear: both; min-height: 1em;">portant; word-wrap: break-word !important; font-size: 14px;">用此法检查屏蔽线时,如果仅仅是芯线折断而屏蔽层没断,那么该方法不能使用。

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portant; word-wrap: break-word !important; clear: both; min-height: 1em;">portant; word-wrap: break-word !important;">portant; word-wrap: break-word !important; font-size: 14px; color: rgb(0, 82, 255);">2、使用感应式电笔检测检测法:

portant; word-wrap: break-word !important; clear: both; min-height: 1em;">portant; word-wrap: break-word !important; font-size: 14px;">以下方法有生产商指出只适用于没有屏蔽层的各种电缆:感应试电笔(就是带着一个电子表似的屏幕,可以检测电压和通断的那种)。首先排除断点电缆周围的电缆有电源,然后将有断点的电缆接在火线上,将电笔垂直于导线,按住 感应断点测试 按钮在导线上向前缓慢移动,等试电笔检测的交流信号出现突然消失时,即可判断断点在该检测点处,误差最多不超过10cm。

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portant; word-wrap: break-word !important; clear: both; min-height: 1em;">portant; word-wrap: break-word !important; font-size: 14px; color: rgb(255, 41, 65);">需要注意的是:断点电线周围的电缆不能带有电源。另外要提醒的是,此法不是万能,短电缆效果明显,电缆越长越糟糕,是在没有电缆测断仪的情况下因陋就简的方法。

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portant; word-wrap: break-word !important; clear: both; min-height: 1em;">portant; word-wrap: break-word !important;">portant; word-wrap: break-word !important; font-size: 14px; color: rgb(0, 82, 255);">

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portant; word-wrap: break-word !important; clear: both; min-height: 1em;">portant; word-wrap: break-word !important; font-size: 14px;">把有断点的电线一端接万用表的黑表笔,另一端接红表笔。万用表打在电阻*200 欧档。在最有可能断线的地方(比如经常弯曲点)来回折弯。如万用表显示忽通忽断时,此处即为断点。还不能判断,则需从电缆的一端开始折弯,直到找到断点。 此法适用于较短的电缆。

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portant; word-wrap: break-word !important;">portant; word-wrap: break-word !important; text-align: center;">portant; word-wrap: break-word !important; font-family: 微软雅黑; font-size: 14px;">portant; word-wrap: break-word !important;">portant; word-wrap: break-word !important; color: rgb(255, 255, 255); box-shadow: rgb(165, 165, 165) 4px 4px 2px; background-color: rgb(0, 187, 236);">有损伤电线电缆的检测方法

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portant; word-wrap: break-word !important; clear: both; min-height: 1em;">portant; word-wrap: break-word !important;">portant; word-wrap: break-word !important; font-size: 14px; color: rgb(0, 82, 255);">1、针刺检测法 portant; word-wrap: break-word !important; font-size: 14px;">

portant; word-wrap: break-word !important; clear: both; min-height: 1em;">portant; word-wrap: break-word !important; font-size: 14px;">在断线电缆上分段插入钢针,用万用表测量钢针到电缆端头的通断,以判断电缆的断点。 正常情况下不建议使用,因为会破坏绝缘层,很容易在后期的电缆使用中,造成其他的问题,尤其是在湿度较大的环境中。这种方法是利用电缆的通断来排查电缆的断点所在。

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portant; word-wrap: break-word !important; clear: both; min-height: 1em;">portant; word-wrap: break-word !important;">portant; word-wrap: break-word !important; font-size: 14px; color: rgb(0, 82, 255);">2、拉拔电线检测法

portant; word-wrap: break-word !important; clear: both; min-height: 1em;">portant; word-wrap: break-word !important; font-size: 14px;">用老虎钳拉拔电缆端头的断线,如断点在电缆端头附近,则绝缘皮很容易拉断。此法用于断点在电缆端头的附近,例如行车控制按钮电缆。

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portant; word-wrap: break-word !important;">portant; word-wrap: break-word !important; text-align: center;">portant; word-wrap: break-word !important; font-family: 微软雅黑; font-size: 14px;">portant; word-wrap: break-word !important;">portant; word手提包-wrap: break-word !important; color: rgb(255, 255, 255); box-shadow: rgb(165, 165, 165) 4px 4px 2px; background-color: rgb(0, 187, 236);">使用仪器的检测方法

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portant; word-wrap: break-word !important; clear: both; min-height: 1em;">portant; word-wrap: break-word !important;">portant; word-wrap: break-word !important; font-size: 14px; color: rgb(0, 82, 255);">1、音频探测仪:

portant; word-wrap: break-word !important; clear: both; min-height: 1em;">portant; word-wrap: break-word !important; font-size: 14px;">可探测供热采暖地下电缆径路及大致故障点,电缆故障处。

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portant; word-wrap: break-word !important; clear: both; min-height: 1em;">portant; word-wrap: break-word !important; color: rgb(0, 82, 255);">portant; word-wrap: break-word !important;">portant; word-wrap: break-word !important; font-size: 14px;">2、电缆故障测试仪:

portant; word-wrap: break-word !important; clear: both; min-height: 1em;">portant; word-wrap: break-word !important; font-size: 14px;">可探测电缆的全长和电缆芯线的断、短路故障点。

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