Author: Noyafa–Cable Tester Manufacturer
What do you know about the causes of cable insulation breakdown? Whether it is domestic electricity or industrial electricity, it all depends on the transmission of cable equipment, but because the cable will be affected by other factors in the long-term operation, the cable will break down and cause the cable insulation breakdown. Do you know what time? Whether it is domestic electricity or industrial electricity, all rely on the transmission of cable equipment, but because the cable will be affected by other factors in the long-term operation, the cable will have a breakdown failure, thus affecting the power transmission. In order to ensure the stable operation performance of cable equipment, we must understand the cause of the failure and avoid the hidden danger of later failure from the source. This is the key to ensuring the stable operation performance of the cable. So what are the causes of cable insulation breakdown and how to avoid them? In the breakdown of cable insulation, the mechanical damage factor accounts for the largest proportion. The most common reason is that it is directly damaged by external force. Bending too much will damage the insulation, and the cable will be severely squeezed during shipment, which will damage the insulation and protective layer; the direct buried cable will be subjected to excessive tensile force due to subsidence of the ground, resulting in damage to the insulation, and even breaking the cable in severe cases.
The cable joint is the weak link of the cable line. Due to poor construction or poor material quality, the cable head fails and the insulation breakdown occurs. The main reasons for cable insulation being damp are: due to poor construction of the cable head, moisture intrudes into the cable; moisture intrusion due to the damaged inner sheath of the cable, such as direct mechanical damage to the inner sheath; lead-clad cables are laid near the vibration source, due to long-term Fatigue cracks caused by vibration; holes caused by chemical corrosion of the cable sheath; small holes or cracks on the lead package due to poor manufacturing. 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. On the basis of strong technical force, the company optimizes reforms and brings forth new ideas, so as to continuously improve product quality and production technology. The products have the characteristics of professional quality, precision and intelligence, stability and efficiency, lightness and portability, simple operation, safety and durability. Over the years, the excellent product performance has brought significant economic benefits to users and won the trust and praise of customers.
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