Author: Noyafa–Cable Tester Manufacturer
How many potential hidden factors causing cable failures do you know? In the long-term operation of the cable, various failures will occur due to its own or environmental factors, thereby affecting the power supply and causing serious economic losses. According to the relevant data, more than 85% of the cables cause potential hidden factors of cable failure. How many do you know? In the long-term operation of the cable, various failures will occur due to its own or environmental factors, thereby affecting the power supply and causing serious economic losses. According to the relevant data, more than 85% of cable failures are caused by non-standard cable laying in the early stage, resulting in damage to the cable insulation or other reasons.
So what are the potential factors that cause the cable to fail in operation? Cable quality defects are mainly manifested in three aspects: First, the problem of cable manufacturing, the defects left by the lead (aluminum) sheath; in the process of wrapping insulation, defects such as wrinkles, cracks, breaks and overlapping gaps appear on the paper insulation ; It is a defect in the manufacture of cable accessories, such as blisters in cast iron, insufficient mechanical strength of porcelain parts, other parts that do not meet specifications or are not sealed during assembly, etc.; third, poor maintenance and management of insulating materials, resulting in damp and dirty cable insulation contamination and aging. When there are chemical substances or underground sewage in the surrounding environment of the place where the cable is buried, these sewage and chemical substances will corrode the cable, causing the cable sheath, armor, etc. to rust, or artificially caused mechanical damage, such as laying Stacking heavy objects on the road surface of power cables or carrying out excavation projects will cause damage to the metal armor or sheath of the cables, and the cable insulation will be damaged, which will eventually lead to power failures. Cable joint failures caused by direct human error (poor construction) often occur.
In the process of making cable joints, if there are original nets such as joints that are not crimped tightly, insufficient heating, etc., the insulation of the cable head will be reduced, resulting in accidents. Shenzhen Noyafa Electronic Technology focuses on the development and production of cable testing equipment Shenzhen Noyafa Electronic Technology Co., Ltd. is a wholly-owned subsidiary invested and established by Noyafa (stock code: 831548), a company listed on the New Third Board. R&D, production and sales of cable fault tester, multiple pulse cable fault tester, cable safety test device, cable identification instrument, cable fault precise location instrument, high-voltage cable outer sheath fault tester, high-voltage bridge fault tester Instrument, light high voltage signal power supply and other high and low voltage power test equipment.
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