Multi-layer dielectric for preventing gas discharge between HV electrodes has semiconductor coating with non-linear conductivity applied to solid insulation layer facing insulation gas layer

摘要

The dielectric has an insulation gas layer (4) and a solid insulation layer (3) between 2 relatively spaced HV electrodes (1,2), with a semiconductor coating (5) applied to at least part of the surface of the solid insulation layer facing the insulation gas layer, exhibiting a non-linear conductivity dependent on the electrical field strength.