How to measure the performance of cold shrinkable cable accessories?
【Abstract】: The basic performance requirements of cold-shrinkable cable accessories are as follows: effective control of the electric field strength at the insulation shielding fracture, reliable sealing and complete insulation protection to the external environment, sufficient mechanical strength, and good conductor connection. How to measure the performance of a cable accessory? It is mainly measured from the electrical properties and physical properties of cable accessories: whether a cable accessory can achieve long-term stable operation depends largely on its electrical and physical properties. |
The basic performance requirements of cold shrinkable cable accessories are as follows: effective control of the electric field strength at the insulation shielding fracture, reliable sealing and complete insulation protection to the external environment, sufficient mechanical strength, and good conductor connection. How to measure the performance of a cable accessory? It is mainly measured from the electrical properties and physical properties of cable accessories: whether a cable accessory can achieve long-term stable operation depends largely on its electrical and physical properties.
Electrical properties of cold shrinkable cable accessories:
The performance of resisting partial discharge, the effect of electrical stress control measures, the structure of the shielding layer of the intermediate head of the cable, the weather resistance of the cable terminal. Measuring the effect of electrical stress control measures for cable accessories can be proved by whether it can effectively reduce the electric field strength of the internal and external interfaces, whether it can help to improve other electrical properties, and whether it can be proved by long-term operation time.
The physical properties of cold shrinkable cable accessories include:
Waterproof sealing performance, mechanical protection performance of intermediate head and reliability of ground connection, operating instructions and installation process of heat shrinkable cable accessories.
Note: There are many other factors to measure the performance of cold shrinkable cable accessories. The most important thing is to consider both electrical performance and physical performance. For end users and operating departments, the most important thing is stable and reliable long-term run. Usually pay more attention to some unique key factors of cold-shrinkable cable accessories, which are very important to the performance of cable accessories.
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