Inspection of Line Post Porcelain InsulatorsHow to apply for a report? What items need to be tested? We will conduct testing and evaluation in strict accordance with the standards. We can also provide personalized testing plans and reports according to your needs.

High voltage line post insulators are a type of rigid insulator composed of one or more insulation components permanently glued to a metal base, sometimes with a cap, and can be rigidly installed on the supporting structure using double headed bolts or one or more bolts installed on the metal base. Used for insulation and supporting wires in AC power lines with a nominal voltage above 1000V, a frequency not exceeding 100Hz, and an altitude not exceeding 1000m in ordinary areas and medium to heavy polluted areas. The installation site has an ambient temperature between -40 ℃ and+40 ℃. Line (solid) post insulators can replace pin insulators, which are B-type insulators and are prone to breakdown and damage during operation. Tempered glass insulators will self rupture at this time, while porcelain insulators will not. Therefore, the power sector needs to spend a lot of manpower and material resources on electrical testing and preventive testing of porcelain insulators, which has certain shortcomings in terms of economic and safe power supply. Therefore, with the development of manufacturing technology, line (solid) post insulators have emerged. This type of insulator has a solid insulator, belonging to the A-type insulator, so there is no need to worry about breakdown along the inside of the insulator during operation, which is one of its major advantages. The line post type porcelain insulators are divided into eight levels based on the rated lightning impulse withstand voltage value: 95, 105, 125, 150, 170, 200, 250, and 325kV; According to the rated bending failure load value, it is divided into four levels: 3, 5, 8, and 12.5kN; According to its installation method, it can be divided into two types: vertical installation and horizontal installation; It can be divided into two types based on its connection with high-voltage conductors: top binding type and top clamp type; According to the connection method between the steel foot and the base, there are two types: detachable (threaded connection) and non detachable

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