最火如何快速测出电线电缆断点装卸机械波谱仪瓷管护栏网配电柜箱Frc

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; clear: both; min-height: 1em;">portant; word-wrap: break-word !important;">portant; word-wrap: break-word !important; font-size: 14px测试针; 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-wo底特律的3大汽车公司和日本的“本田”、“马自达”汽车公司进行的塑料透明车窗的实验和研究表明rd !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、使用马达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; 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; 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; 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; 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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