To avoid leakage currents, discharges and pollution flashovers, a silicone layer is applied to the insulator surface by using a special spray coating technique. This silicone layer provides a hydrophobic surface, combating the negative effects of contamination and enhancing the electrical characteristics and low leakage currents in highly polluted areas.

Main benefits of RTV-Silicone coating

• Excellent self-cleaning characteristics and long-term resistance to weathering and difficult environments
• Long-term hydrophobicity due to the migration of low molecular weight (LMW) siloxanes into the pollution layer
• Suppression of leakage current, discharges and pollution flashover
• Long-term RTV stability makes repeated application of grease unnecessary.
• Reduced maintenance expenditure, as in washing, compared to conventional insulator surfaces.
• Facilitated cleaning cases of extreme pollution deposition (e.g. cement); even the most difficult pollutants can be wiped off with a cloth.
• RTV-coated surfaces withstand high-pressure jet washing up to 90 bar(normal application, 25cm distance).
• The best of both worlds is the mechanical strength of the porcelain and the pollution performance of silicone rubber.
• Non-toxic and environmentally friendly material
• Transmission reliability as well as environmental and resource conservation by efficiently utilizing generated power.