TAP-CHANGER FILTER ESI Tap-changer filter units remove moisture and particulates in the insulating oil,  maintaining electrical properties and reducing arcing during contact break. Cost     savings in maintenance, spares and a significant increase in system reliability        soon recover initial installation costs.Stainless Steel construction, pipe and  fittings ensure maximum filter life. These units have been installed on a wide range of tap changer switches on transformers ranging from 33Kv to 500Kv.

ESI manufacture and install a range of Tap-changer Filter units utilising Velcon tap-changer filter cartridges. These cartridges have a nominal rating of 0.3 micron and are designed to remove particulate solid contaminants and reduce moisture in the oil to below 15ppm water content.

These units allow the periods between maintenance to be dramatically extended, with the extent of service required during maintenance reduced and Tap-changer Unit reliability increased. ESI Tap-changer filter units come with weather proof Stainless Steel cover, fittings and pipe-work as well as leakage protection and remote alarm indications.

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