Author: Noyafa–Cable Tester Manufacturer
Reasons for the failure of the cable fault tester 1. Insulation damp The insulation is damp and causes a fault. The main reasons for the cable getting wet are: 1. Water ingress due to the unsealed structure or poor installation of the joint box or terminal box; 2. The cable is poorly manufactured, the metal sheath has small holes or the cable fault tester is faulty. One. Insulation Wet insulation can cause malfunctions when wet. The main reasons for the cable getting wet are: 1. Water ingress due to the unsealed structure or poor installation of the joint box or terminal box; 2. The cable is poorly manufactured, and the metal sheath has small holes or cracks; 3. The metal sheath is caused by the outer 2. Mechanical damage The cable failure caused by mechanical damage accounts for a large proportion of cable accidents.
According to statistics from Shanghai, the proportion of failures caused by external mechanical damage. Some mechanical damage is so minor that it does not cause a failure at the time, but it takes months or even years for the damaged site to develop into a failure. The main reasons for the mechanical damage of the cable are as follows: 1) Damage during installation: the cable is accidentally bumped during installation, the cable is pulled due to excessive mechanical traction, or the cable is damaged due to excessive bending;
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