Suspension Insulators Are Classified By Umbrella Shape

Ordinary suspension porcelain suspension composite insulator

The umbrella-shaped composite suspension insulator is the oldest type of suspension polymer suspension insulator. It is characterized by simple structure and shape, low cost, and is suitable for use in clean areas. They are usually used on AC transmission lines.

Bell-shaped suspension porcelain suspension type insulator

The umbrella-shaped composite tension insulator has a long under-umbrella ridge, and the product can achieve a larger creepage distance. The inner cavity under the umbrella is not easily affected by moisture and has a higher dirt withstand voltage. It is more suitable for use on AC and DC transmission lines in coastal, foggy, humid and saline-alkali areas.

Double-umbrella and triple-umbrella suspension porcelain high voltage transmission line insulators

These two types of products have good wind and rain self-cleaning performance and low natural dirt accumulation rate because the under-umbrella is smooth and has no edges and is open. In addition, the larger creepage distance makes the product have a good dirt withstand voltage level, and the use of the umbrella structure in a dusty environment can better play the advantages of the umbrella structure. This type of umbrella-shaped overhead power line insulators is called "aerodynamic type". They are suitable for various operating conditions, especially AC and DC transmission lines in heavily polluted, high altitude and desert dry areas.

Straw hat type suspension porcelain tension insulator

The umbrella disk diameter of this product is particularly large, the bottom of the umbrella is smooth and has no edges, a streamlined structure, good self-cleaning properties, and a small amount of dirt accumulation. The use feature is that it is inserted into the upper and middle parts of the suspension string of AC and DC line insulators. The extra-large disk diameter structure can inhibit the occurrence of line pollution flashover caused by ice and bird droppings.