Author: Noyafa–Cable Tester Manufacturer
What are the types of cable faults Today, cables are more and more widely used in the construction of various engineering projects in China. To ensure power, cables are usually laid underground. However, buried cables are affected by certain external factors (such as construction), and what are the types of cable failures Nowadays, cables are more and more widely used in the construction of various engineering projects in China.
To ensure power, cables are usually laid underground. However, buried cables are subject to certain external factors, such as construction, which will lead to failure. However, since the buried cables are buried deep in the ground and have large lengths, it is troublesome to repair and troubleshoot cable fault points.
Therefore, cable fault detectors are used to detect cable fault points for repairs. So what are the types of cable failures and what are the key causes? How to quickly detect cable fault points? Wire break fault (open circuit)? A wire break fault, also known as an open circuit fault, is usually caused by a broken core or multi-core conductor or a broken metal sheath (armour) in the cable. Usually, a simple disconnect is not common.
Most of the factors are caused by cracks in the outer protective layer of the cable armor and resistance grounding phenomenon. The cable has an open circuit fault. The insulation resistance of the cable can meet the resistance of the cable under normal use, but the voltage of the cable during operation cannot be changed. transfer to the power supply. In short, no voltage. In another case, the cable voltage can be detected, but because the terminal load capacity is too low, it will cause an open circuit fault.
Normally open cable faults are detected. Acoustic-magnetic synchronization can be used to detect cable faults. You can also use the audio signal method to detect if the cable is short.
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