Coated porcelain long rod insulators meet hydrophobicity. The Process and Hydrophobicity Transfer is the core content of this article. ORIENT POWER is one of China insulator manufacturer.

Porcelain long rods meet hydrophobicity: ORIENT porcelain long rods are also available with silicone coating to further improve their performance under pollution.
Surface contamination of coated porcelain long rod insulators when installed in extreme environmental conditions increases the risk of leakage currents, which can subsequently lead to pollution flashovers and power system outages.
Providing a hydrophobic surface by adding an estimated 0.5 mm (19mils) layer of RTV silicone rubber will limit the leakage current to harmless levels in the presence of moisture and contamination.

ORIENT Insulators is one of the very few insulator manufacturers able to offer RTV coating directly to our customers without involving an external company for this service.

Coated porcelain long rod insulators Process:
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.

Coated porcelain long rod insulators Hydrophobicity Transfer:
In the case of pollution particle deposition on the coated layer, the low molecular weight (LMW) siloxanes will spread from the silicone bulk material to the pollution layer and encapsulates these particles within a short time period. Now the insulator surface is hydrophobic again.

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