Electrogard SiCoat
ELECTROGARD® SiCOAT is a premium RTV silicone–based high voltage insulation coating developed to enhance the safety and reliability of electrical insulation systems. It forms a seamless, strongly bonded protective layer on glass, porcelain, and polymer insulators, delivering long-lasting ultra-hydrophobicity, excellent dielectric strength, and superior UV resistance. By effectively suppressing leakage currents and minimizing dust- and pollution-related flashover risks, ELECTROGARD® SiCOAT helps extend the service life of high-voltage assets while ensuring safer and more reliable plant operations.
Product Description
Electrogard SiCoat, Silicogard1570, Silicogard1580 are our product offerings in RTV silicone based high voltage insulation coating:
Electrogard SiCoat
RTV silicone-based high voltage insulator coating (HVIC) that delivers excellent adhesion to glass, porcelain, and polymer insulators. Its non-flowing, ultra-hydrophobic formulation provides long-term protection against UV exposure, minimizes leakage current, and effectively reduces dust-induced flashover risks, thereby enhancing overall service life.
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Silicogard1570
A high-performance RTV silicone coating that provides long-lasting hydrophobic insulation protection against leakage current, contamination, and UV exposure.
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Silicogard1580
A high-performance RTV silicone coating ideal for AC and DC systems, including substations (transformers, switchgear, bushings), transmission lines and power infrastructure, air core reactors, high voltage machines, railways, and other high-voltage environments.
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Benefits:
- High dielectric strength with excellent insulation resistance
- Strong bonding to multiple substrates including glass, porcelain, HTV silicone, and other polymer insulators
- Excellent arc resistance
- High resistance to damage caused by corona discharge
- Seamless, non-porous, and hygienic surface finish
- Can be applied over existing HVIC after proper surface preparation
- Resistant to acids, alkalis, industrial pollutants, and dust such as fly ash, carbon black, cement dust, and sand particles
- Single-component system that is easy to apply
Application Areas:
- Suitable for use in both AC and DC systems
- Ideal for substation equipment including transformers, switchgear, bushings, and similar high-voltage components
- Widely used in power infrastructure such as transmission lines across all voltage levels, air-core reactors, and high-voltage machines
- Suitable for railways and other demanding high-voltage electrical applications

