The Advantages of Polymer Insulators Over Traditional Insulators
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Insulator Features
Low Maintenance
When water readily beads and runs off a hydrophobic surface, it can remove loose contamination from the insulator surface. Removing contamination can result in lower leakage currents. With the self-cleaning feature of silicone rubber, the interval between cleaning may be extended.
High Polluted Areas
Silicone composite polymer Insulators are preferred in highly contaminated areas like salty coastal, and other Polluted areas, environments due to their lower leakage currents and self-cleaning characteristic.
Design
Silicone composite polymer insulators are 80% less in weight compared to traditional porcelain insulators. Results in easy installation/transportation which avoid breakage and also reduces the overall cost of the Transmission and Distribution network.
Low Flammability
Silicones only ignite at very high temperatures. In case of fire, they do not release any toxic or corrosive product.
Uniform Electrical & Mechanical Values
Due to advanced injection molding manufacturing process uniform products are possible with uniform electrical and mechanical values.
Resistance to Vandalism
Inherent high tear strength will safe guard the insulators from vandalism and being puncture proof and hence cannot be damaged easily so it possess high durability and endurance values.
Light Weight
Silicone composite polymer insulators are 80% less in weight compared to traditional porcelain insulators. Results in easy installation/transportation which avoid breakage and also reduces the overall cost of the Transmission and Distribution network.
Insulator Safety
Porcelain insulators are easy to explosion and breakages due to high fragile properties and stone throwing or gun shooting while Silicon Rubber insulators provide very high level of safety superior flexibility and strength so it is not easy to break due to stone throwing or gun shooting.
Hydrophobicity
Hydrophobicity is the property that prevents water from forming a sheet on the surface of the polymer. It also aids in cleaning polymer surfaces itself.
Dielectric Properties
Silicone rubber exhibits excellent dielectric properties with high breakdown strength, low dielectric constant, and low dissipation factor. These remain stable across a wide temperature range and the full operational lifetime.
Resistance to Temperature Variance
Silicone rubber maintains its properties from −60°C to +220°C, making it ideal for arctic climates, desert, and tropical environments. Thermal stability ensures reliable performance in all seasons.
Resistance to UV Radiation
The silicon-oxygen backbone is inherently resistant to UV and ozone degradation. Unlike organic polymers, it does not chalk, crack, or lose mechanical strength after prolonged outdoor exposure.
Tracking & Erosion Resistivity
Silicone rubber demonstrates outstanding resistance to electrical tracking and erosion. Even under prolonged dry-band arcing conditions, it resists the formation of conductive carbonized paths on the surface.
