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MIDSUN® 570 ™ HVIC Silicone Coating sprayed on an electrical isolator after removal of silicone grease View larger

MIDSUN® High Voltage Insulator Coating

An unparalleled flashover protection

MIDSUN® RTV  HVIC Silicone Coating extends the life of your products and increases their reliability at a lower cost. It prevents the appearance of excessive leakage currents, the elongation of discharges and the initiation of arcing, thus minimizing maintenance requirements.

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A reliable service

The excellent performance of MIDSUN®'s HVIC RTV (Room Temperature Vulcanizing) Silicone Rubber Coating is due to its unique hydrophobicity and adhesion properties, which have protective properties against flashover and electric shock. The excellent hydrophobicity of the coating prevents the formation of a deposit of contaminants on the surface. It allows to replace the traditional silicone grease which has the disadvantage of having to be changed frequently.

For a long term, cost effective and reliable product, only MIDSUN® HVIC silicone coating provides a near maintenance free system that can prevent excessive leakage current, tracking and flashovers. MIDSUN® HVIC silicone is not affected by UV light, temperature, corrosive environments, or ATH pitting from dry band arcing. The coating is also highly water repellent, so contaminants cannot film over the surface. It is a long-term solution to flashover problems.

MIDSUN®  HVIC Silicone Coating can eliminate or reduce:
- regular insulator washing
- periodic re-application of grease
- replacement of components damaged by flashovers
- repair silicone sheds and rod damage on composite insulation systems

Mainly used in polluted sites such as steel mills, cement plants, quarries but also littoral or petrochemical sites ...

The insulation surface to be coated must be clean and dry. In most instances, only a water wash followed by a naphtha, IPA or acetone solvent wipe will be needed. In some instances, like insulators in cement plants and other heavily polluted environments, dry blasting with corn cob or walnut shell may be needed. Dry blasting is also recommended for insulators previously greased. Contact us for the recommended practice.

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