Author: Noyafa–CCTV Tester
Guangdong manufacturers specialize in providing underground power cable fault detection services. Shenzhen Noyafa Electronic Technology Co., Ltd. is an organization specializing in cable fault detection, emergency repair, route search, and fault location services. Our company has been engaged in cable fault detection all the year round. Guangdong manufacturers specialize in providing underground power Cable fault detection business, Shenzhen Noyafa Electronic Technology Co., Ltd. is an organization specializing in cable fault detection, emergency repair, route search, and fault location services. Our company has been engaged in cable fault detection, cable fault finding, cable fault location, and high-voltage cable faults all year round. There are many willingness to detect underground power cable faults, but there are five main reasons, which we will often encounter in our experience in cable fault detection. In order to help you better understand, the following will explain these 5 main reasons in detail. 1. Mechanical damage Cable faults caused by mechanical damage account for a large proportion of cable accidents.
Some mechanical damage is so minor that it does not cause a failure at the time, and it takes months or even years for the damage to develop into a failure. The main reasons for the mechanical damage of the cable are: (1) Damage during installation. The cable is accidentally bumped during installation; the cable is pulled by excessive mechanical traction; the cable is damaged by excessive bending.
(2) Directly damaged by external force. Carry out civil construction on or near the installed cable path, so that the cable is directly damaged by external force. (3) The vibration or impact load of the driving vehicle will also cause the lead (aluminum) package of the underground cable to crack.
(4) Damage caused by natural phenomena. For example, the inner insulating rubber of the intermediate joint or terminal head expands and bursts the outer casing or cable sheath; the cable sheath installed on the nozzle or bracket is scratched; due to excessive tension caused by land settlement, the intermediate joint or conductor is pulled off.
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