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Detection of broken core of flame retardant cable and searching method
With the rapid development of China's economy, the cable industry has also experienced tremendous development. There are many types of cables, computer cables, flame-retardant cables, and control cables, depending on the performance of the cable. In the past few decades, the formation of China's cable manufacturing industry has made the world look impressive. In China's power industry, rail transit industry, data communications industry, automobile industry and mines, the scale of the industry continues to expand, the demand for wire and cable is also growing rapidly, and the cable industry will have a lot of room for future development. Some faults may occur when the cable is in use, such as cable breakdown, cable conductor damage, core breakage, etc. The conductor of the flame-retardant cable has a small cross-sectional area and may be broken during the molding process and during the extrusion process. So how do you check the broken wires of the flame retardant cable?
One: the method of energizing the capacitor
Some cable manufacturers in this regard usually use a capacitor comparison method to find the approximate location of the broken wire. The efficiency of this method is very low by using a continuous energization method to accurately break the cable. Generally, it takes about one and a half hours to find a disconnection point. In this method, it is almost impossible to find a broken core for the flame-retardant cable that has been completed in the shielding, armoring and sheathing process, and if the manufacturing is bad, the flame-retardant cable will be scrapped. This method is basically gone now.
Two: the combination of capacitance method and induction method:
This method is used for the core of the cable core, which requires that the core is not covered with a metal layer and there is no extrusion coating. In the search, first use the capacitor to find the approximate position of the cable break, 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 used method. Inductive voltage method is to connect 650V AC voltage to one end of the broken core of the cable, ground the other end and other cores, and then test with an inductive pen that can send optical signals. When the sensor pen slides from the broken core during the test, The signal changes so that the cable break point can be accurately found.
Three: the combination of constant current source and bridge method
This method is for a completed cable or a cable core that has been coated with a metal layer. The method of searching is to first burn the insulation at the broken core of the flame-retardant cable with a constant current source, and then accurately locate the fault point by using the bridge method fault locator, which is also a method frequently used.
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Product specifications: According to the customer's requirements, the number of products is customized: the order quantity is 100 meters, and the price is 100 meters - 200 meters. The floating package description: the short rice package, the long cable length of the cable package price description: telephone consultation, the price is based on The rise in copper prices is always up to date
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Detection of broken core of flame retardant cable and searching method 
Elevator Guide Rail,Lift Guide Rail,Elevator Hollow Guide Rail, Machined Type Elevator Guide Rail, Cold Drawn Type Elevator Guide Rail
CEP Elevator Products ( China ) Co., Ltd. , https://www.zjelevatorcontrolsystem.com