English 
Views: 0 Author: Site Editor Publish Time: 2023-01-10 Origin: Site
Busbar Insulator plays two basic roles in overhead transmission lines, namely supporting wires and preventing current from returning to the ground. These two roles must be guaranteed. Busbar Insulator should not produce flashover breakdown due to changes in the environment and electrical load conditions. Otherwise, the Busbar Insulator will lose its function, which will damage the use and operating life of the entire line.
What are the characteristics of Busbar Insulator?
What should I pay attention to when using Busbar Insulator?
What is the role of Busbar Insulator?
1. The Busbar Insulator has high mechanical strength, low dispersion, safe and reliable operation.
2. The Busbar Insulator has good low-temperature mechanical properties.
In order to test the low-temperature mechanical properties of the product, the freezing test of the Busbar Insulator was carried out in the low-temperature laboratory of the Water Research Institute of the Songliao Water Resources Commission to simulate the change of outdoor winter temperature. After several temperature cycles, the test crystal was subjected to a bending failure test at a low temperature. The test results prove that the bending failure strength of the insulator at -40°C has no significant change compared with room temperature.
3. The Busbar Insulator has excellent stain resistance.
When the Busbar Insulator is in good operating condition, its heat is mainly the first item; when the performance of the porcelain insulator is deteriorated, or the porcelain is cracked, or the surface of the porcelain plate is dirty, the leakage current of the second or third item will increase, and the heat will increase. , Causing the temperature of the insulator to rise. It is currently believed that there are three main reasons for the deterioration of insulators: improper manufacturing process control, internal defects and the impact of changes in the operating environment.
Due to the process and formulation issues in the manufacturing process of the Busbar Insulator, it is easy to form micro-cracks and hygroscopic pores in the ceramic, and may cause an imbalance of internal stress. The local stress concentration will increase the micro-cracks, and the water will invade the porcelain through the through holes in the cracks and the gas phase, and the hygroscopic pores will provide space for water molecules to stop. A stress-induced chemical reaction occurs between the water and the glass phase, which induces the slow growth of cracks. Under power frequency voltage conditions, water molecules rub against each other in the process of turning polarization, and the heat generated in the area where the molecules move violently will cause a significant temperature rise in the Busbar Insulator.
A lot of disc-shaped Busbar Insulators are hung on one end of the high-voltage wire connecting tower. It is used to increase the creepage distance. It is usually made of glass, ceramic or rubber, called an insulator. In order to prevent dust and other pollution from adhering to the surface of the insulator, the formation of a path is flashover and breakdown at both ends of the insulator, that is, creepage. Therefore, increase the surface distance, that is, the creeping distance, and the distance of discharge along the insulating surface, that is, the leakage distance is called the creeping distance. Climbing distance=surface distance/maximum voltage of the system. According to the degree of pollution, the crawling distance is generally 31mm/per kilovolt in heavily polluted areas.
Zhejiang Zhegui Electric Co., Ltd has been a Chinese pioneer in Busbar Insulators for several years. They can provide any type of Busbar Insulators you need. At the same time, their after-sales service is also very considerate.