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 surface partial discharge stress. Here account is taken of the fact that only 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 required, sufficient for a measurable volume of destroyed dielectric to be formed.