Insulation layer

Conductor and insulation shields homogenize the electrical field to prevent electrical breakdowns of high voltage cables.

The shield also protects the insulation surface from the damaging effects of ionisation as well as physical damage. The insulation shield must also facilitate the grounding of the cable during switching surges, short circuits, or lightning strikes.

Lotryl® Butyl Acrylate 17BA07T copolymer can be helpful in insulation layer to prevent water-treeing.

Premature cable failures due to water-trees have raised the use of Lotryl® resins.
Lotryl® BA resins are introduced at 10-15f as additve in the XLPE insulaton layer.
It prevent electrical breakdown by reducing water-treeing which results in insulaton failure of the cable.