Due to its many advantages, glass insulators occupy 1/3 of the current line insulator usage. for the O&M department, glass insulators have the following advantages.
Post insulator products consist of the iron cap, tempered glass parts, and steel feet, and are glued together with cement. The product all adopts the most advanced international cylindrical head structure, which is characterized by small head size. Lightweight, high strength, and large creep age distance. It can save metal materials and reduce the cost of the line. In order to meet the needs of live operation, the traditional domestic structure shape is adopted on the brim of the cap.
Composite insulators can effectively use narrow corridors to open voltage and transmit electricity, and are suitable for technical transformation of urban network. They can reduce the height of poles and towers and save a lot of manpower, material resources and financial resources. Due to the high bending strength of composite material insulators, it can prevent the cascading fracture accidents that are prone to porcelain cross arm, and it is an irreplaceable product for porcelain cross arm. In addition, the composite insulator is small in size, light in weight, shockproof and impact resistant, and does not require manual cleaning, which provides a guarantee for safe operation.
A lot of disk-shaped insulators are hung on one end of the high-voltage wire connection tower to increase the creepage distance, usually made of glass, ceramic or composite materials, called electricity insulators.
In order to prevent dust and other pollution from adhering to the surface of the insulator, a path is formed to be broken down by the voltage across the insulator, that is creepage. Therefore, increase the surface distance, that is the creeping distance, and the distance along the insulating surface that is the leakage distance is called the creeping distance. Climbing distance = surface distance / the highest voltage of the system. Depending on the degree of pollution, a crawl distance of 31 mm/kV is generally used in heavily polluted areas.
Post insulator: It is a special insulation control, which can play an important role in overhead transmission lines. In the early days, post insulators were mostly used for electric poles, and gradually developed from the end of high-type high-voltage wire connecting towers with a lot of suspended insulators, which were usually made of silica gel or ceramic to increase … Read more
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