27.5kV Composite Substation Post Insulators For Railway
Composite post insulator in different types have different functions, structure height and creepage distance is also each are not identical, pillar composite insulator is mainly used in transformer substation, and has good hydrophobic tracking resistance, aging resistance, and electrical erosion resistance, high tensile strength and bending strength, its high mechanical strength, shock resistance, shock and the brittle fracture performance is good, Light weight, easy installation and maintenance, the upper and lower end of the installation size and the corresponding porcelain post insulator installation size is the same, can be used interchangeably.
What are the characteristics of composite post insulators?
a. The post composite insulator can effectively use the narrow corridor to open voltage transmission, and is suitable for the technical transformation of urban network. It can reduce the height of the pole and tower, and save a lot of manpower, material and financial resources. Due to its high bending strength, it can prevent the cascade fracture accident easily occurred by porcelain cross arm, and it is the product that porcelain cross arm cannot replace. Small size, light weight, strong shock and impact resistance, no need for manual cleaning, to provide a guarantee for safe operation. This product adopts INTEGRAL bar design, compact structure, high quality, weight is the same grade porcelain and glass insulator 1/10, transportation and installation is very convenient.
Suitable for dirty areas, high mechanical tensile load, long span and compact lines. Pollution lightning voltage is 30%-50% higher than that of porcelain and glass insulators of the same grade. Stable performance at -60 degrees --+200 degrees ambient temperature; The non-breakdown design is adopted, no need to measure the zero value in operation. Excellent electrical performance, high mechanical strength, the tensile and bending strength of the epoxy glass drawing rod with internal load is 2 times higher than that of ordinary steel, and 8~10 times higher than that of high-strength porcelain material, which effectively improves the reliability of safe operation.
b. Good anti - fouling performance, anti - flashover strong, its wet tolerance voltage and pollution tolerance voltage of the same climb distance porcelain insulator 2~2.5 times. And do not need cleaning, can be in heavy pollution to run safely.
c. Small size, light weight (only 1/6~1/9 of the same voltage grade porcelain insulator), light structure, easy to transport and installation.
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