The VoltShield System has been specially developed for the renovation, protection and maintenance of glazed ceramic and glass electrical insulators.

VoltShield prevents pollution build-up on the surface of electrical insulators for:

• Increased electrical performance
• Reduced corona activity
• Reduced flashover failures
• Potentially increased insulator service life

Introduction

Glass and ceramic surfaces are chemically reactive and reveal a rough surface with many potholes when looked under a microscope. When left unprotected, those surfaces quickly and easily suffer permanent bonding of organic and inorganic air- and water-borne contaminants such as limescale from cement-dust, mortar, concrete, brickwork and stonework run-off, mineral salts from seawater, unburned hydrocarbons from industrial and traffic pollution, and metal oxides. These contaminants deposit in the potholes and react chemically, bonding firmly to the surface.

How does VoltShield provide the solution?

VoltShield is a chemically cross-linking polymeric resin with incredible 'non-stick' properties. Its application provides a highly mobile surface to disperse and minimize water aggregation.

This surface permits the rapid dispersal of water and does not allow adherence of solid pollutant due to its cross-linked molecular bonding.

This results in enhanced electrical performance and reducing both corona activity and flashover failures.
Power frequency withstand and flashover voltage independent tests conducted on VoltShield treated insulators to IEC 60060 by HVL Tamworth High Voltage Laboratory, UK, have shown a marked increase in the wet withstand and flashover voltage values compared to similar untreated insulators.

VoltShield is a transparent treatment that will not mask the original glazed color and identification mark of the insulator. It can be applied onto new or existing insulators in the factory or onsite.

A Project Engineer from a energy supplier was impressed, stating:

‘After the application of VoltShield product to the insulator, as far as I am aware, we haven't had a single flashover, which in my eyes is a success."

If you would like more information about this product or its application, please contact us.