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Introduce you how to find the broken core of flame retardant cable

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Introduce you how to find the broken core of flame retardant cable

作者: Release Date: 2018-09-11 Author: Click:

Introduce you how to find the broken core of flame retardant cable


With the rapid development of China's economy, the cable industry has also developed tremendously. There are many types of cables, such as computer cables, flame-retardant cables, and control cables , depending on the performance used. In the past few decades, the productivity of China's cable manufacturing industry has made the world look impressive. In China's electric power industry, rail transportation industry, data communications industry, automobile industry and mines, the scale of the industry continues to expand, and the demand for wire and cable is also growing rapidly. The cable industry will have a lot of room for future development. When the cable is used, there may be some faults, such as cable breakdown, damaged cable conductors, broken cores, and other faults. The cross-sectional area of the conductor of the flame-retardant cable is small, and it may be pulled off during the extrusion process when it is made into a cable.


So how to check the broken wire of flame retardant cable? Below, I will introduce the method of finding the broken core of flame retardant cable.


电线电缆厂家

First, the method of energizing capacitors


The practice of some cable factories in this regard is usually to use a capacitor comparison method to find the approximate location of a broken wire. It is very inefficient to use the continuous energization method to accurately disconnect the cable. It usually takes about an hour and a half to find a breakpoint. This method is almost impossible to find the broken core for the flame retardant cable whose shielding, armoring and sheathing processes have been completed, and the flame retardant cable will be scrapped if it is made badly. This method is basically no longer used. Wire and cable manufacturers .


Combining capacitive and inductive methods


This method is used for the broken core of the cable core, which requires that the cable core is not covered with a metal layer and there is no extrusion coating. When searching, first use the capacitor to find the approximate location of the cable disconnection, and then use the induced voltage method to accurately find the disconnection point. This method is very simple and fast, and it is also the most commonly used method at present. The induced voltage method is to connect an AC voltage of 650V at one end of the broken core of the cable, and ground the other end and the other cores, and then use an inductive pen that can send a light signal to test. When the inductive pen slides over the broken core during the test, The signal will change so that you can pinpoint the cable breakpoint. Wire and cable manufacturers.


Combination of constant current source and bridge method


This method is used for finished cables or cores that have been coated with metal. The way to find it is to first burn the insulation at the broken core of the flame-retardant cable with a constant current source and break it down, and then use the bridge method fault locator to accurately locate the fault point, which is also a commonly used method.


URL of this article: http://herzheart.com/南方双彩网/415.html

Keywords: wire and cable manufacturers , Henan wire and cable , Zhengzhou wire and cable

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