Double umbrella glass insulators have better anti fouling performance in scenarios with less pollution accumulation, good self-cleaning ability, and easy manual cleaning; Aerodynamic glass insulators perform well in scenarios where they are less prone to fouling and have good natural cleaning effects, but some models may have higher fouling levels, which need to be judged based on specific design considerations. The following is a detailed comparative analysis:
Accumulation characteristics
Double umbrella glass insulator:
The umbrella shaped design is smooth, with no protruding edges or grooves on the upper and lower surfaces, low air resistance, and less likely to accumulate dirt.
Insulators exhibit excellent performance in salt and ash deposition tests, with minimal and evenly distributed fouling and good self-cleaning ability.
Aerodynamic glass insulator:
Some models (such as FC70D) have a large amount of dirt accumulation and weak anti fouling ability due to the lack of edges or design defects on the lower surface of the umbrella skirt. However, the lower surface of the open type (aerodynamic type) insulator has no umbrella edges, and the air flow is smooth, making it suitable for dry and dust-free areas such as deserts, with low pollution risk.
structural advantage
Double umbrella glass insulator:
The umbrella skirt has short spacing, compact structure, and is easy to clean manually. Salt density monitoring shows that its salt content is low, and the accumulated pollution value is small during long-term operation, indicating stable anti fouling effect.
Aerodynamic glass insulator:
Some models reduce fouling by optimizing the shape of the umbrella skirt (such as the flow pattern) and have good natural cleaning effects. For example, the open design does not require frequent cleaning and has low maintenance costs.
Actual application performance
Double umbrella glass insulator:
Widely used in flat areas with slightly higher pollution levels and lower probability of lightning strikes, such as chemical industrial areas and saline alkali zones. Its anti fouling ability has been verified through actual operation, and it can effectively reduce the risk of pollution flashover.
Aerodynamic glass insulator:
It performs outstandingly in dry areas such as deserts and plateaus, with low pollution accumulation and good natural cleaning ability. However, some models (such as FC70D) have serious pollution accumulation in heavily polluted areas and need to be carefully selected.
Special scenario adaptability
Double umbrella glass insulator:
The tripping rate is relatively high after lightning strikes, and due to the short distance between the umbrella skirts, it is easy to form a continuous current path. Suitable for areas with low lightning risk.
Aerodynamic glass insulator:
The open design has obvious advantages in windy and sandy areas, and smooth air flow can reduce pollution accumulation. However, it should be noted that some models have limitations in heavily polluted areas.
