ENERGY CHARACTERISTICS OF POLYMER INSULATION DIELECTRIC STRENGTH UNDER PARTIAL DISCHARGE STRESS

An energy parameter - the specific energy of dielectric destruction - can be used as a criterion of polymer insulation stability under surfa ce partial discharge stress. Here account is taken of the fact that on ly part of the energy is consumed on the destruction of a unit volume of the dielectric. This characteristic depends only on the properties of the dielectric, and to find it only a short period of time is requi red, sufficient for a measurable volume of destroyed dielectric to be formed.