Epoxy Resin Insulators Are Classified By Umbrella Shape

high voltage epoxy resin is the oldest type of high voltage standoff. It is characterized by its simple structure and shape, low cost, and is suitable for use in clean areas. They are usually used in AC transmission lines.

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

These two types of products have good wind and rain self-cleaning performance and low natural pollution accumulation rate because the underside of the umbrella is smooth and has no edges and is open. In addition, the larger creepage distance makes the product have a good pollution 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 insulator is called "aerodynamic type". They are suitable for various operating conditions, especially AC and DC transmission lines in heavy pollution, high altitude and desert dry areas.

The umbrella disk of this product has a particularly large diameter, 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. Its usage feature is that it is inserted into the upper and middle parts of the suspended strings of AC and DC line insulators. The extra-large disk diameter structure can suppress the occurrence of line pollution flashover caused by icicles and bird droppings.