ELECTRICAL BUSHING HAVING STRESS-GRADING LAYER DISPOSED WITHIN SOLID INSULATION INCLUDING A GROUND LAYER TERM INATED AT EACH END WITH A LAYER OF MATERIAL HAVING A VOLTAGE-DEPENDENT RESISTIVITY

摘要

A high-voltage electrical bushing having solid electrical insulation disposed about an electrical conductor, with an axial and radial stress-grading structure disposed within the solid insulation. The stress-grading structure includes a ground layer in the form of a substantially cylindrical band of electrically conductive material disposed coaxially with the electrical conductor, with both ends of the electrically conductive band being connected to stress-grading materials having a voltage-dependent resistivity.