National standard U120BP/146 pollution resistant glass insulator with large creepage distance

Description :

　　National standard U120BP/146 pollution resistant glass insulator with large creepage distance

　　Application of Pollution resistant Glass Insulators:

　　 Standard type pollution resistant type DC type spherical type aerodynamic type ground wire type electrified railway contact network. This product is used for insulation and suspension of conductors in high-voltage and ultra high voltage AC/DC transmission lines. The product consists of iron caps, tempered glass pieces, and steel feet, which are bonded together with cement adhesive. This product adopts the international cylindrical head structure, which is characterized by a small head size. Lightweight, high strength, and large creepage distance. Can save metal materials and reduce line costs. To meet the needs of live working, traditional domestic structural shapes are used on the brim of the hat. Zero value self breaking, easy to detect.Tempered glass insulators have the characteristic of zero value self rupture. As long as it is observed on the ground or in a helicopter, there is no need to climb the pole and inspect each piece, which reduces the labor intensity of workers. The annual self destruction rate during operation is0.02—0.04%It can save maintenance costs for the line. The glass insulator has good resistance to arc and vibration during operation. The new surface of the glass insulator, which has been damaged by lightning, is still a smooth glass body with a tempered internal stress protection layer. Therefore, it still maintains sufficient insulation and mechanical strength.

　　 in500kvThere have been multiple incidents of conductor icing causing vibration on the line, and the glass insulators that have been affected by conductor vibration have been tested and found to have no degradation in mechanical and electrical performance. Good self-cleaning performance and resistance to aging. According to the general feedback from the power department, glass insulators are not easy to accumulate dirt and are easy to clean. The glass insulators used in the southern transmission lines are washed clean after rain. Regularly sampling and measuring the mechanical and electrical performance of glass insulators on typical regional power lines after operation, accumulating thousands of data indicating operationthirty-fiveThe mechanical and electrical performance of the glass insulator after the year is basically the same as that at the time of leaving the factory, and there is no aging phenomenon. Large main capacity, uniform voltage distribution in series.The dielectric constant of glass7-8Making glass insulators have a large main capacitance and uniform voltage distribution in series is beneficial for reducing the voltage borne by insulators near the wire side and grounding side, thereby achieving the goal of reducing radio interference, reducing corona losses, and extending the life of glass insulators. Practical operation has proven this.

　　 National standard U120BP/146 pollution resistant glass insulator with large creepage distance

　　Packaging and transportation requirements for glass insulators:

　　Glass insulator packaging

　　It is recommended to use a single cylindrical packaging method for insulators. The packaging should have measures to prevent rodent damage and deformation, and should be stored properly in the warehouse.

　　Transportation of composite insulators

　　The transportation and handling of insulators must be carried out with intact packaging. When the length of the insulator exceeds the body of the transport vehicle, additional measures should be taken

　　Take measures to prevent insulator deformation.

　　When handling insulators of 330kV and above with removed outer packaging, they should be handled smoothly to prevent excessive scratching of the insulators.

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