HIGH-VOLTAGE INSULATOR ARRANGEMENT FOR INSULATION OF A CONDUCTOR OF A DC GAS-INSULATED SYSTEM, AND GAS-INSULATED SYSTEM FOR DC OPERATION COMPRISING A HIGH-VOLTAGE INSULATOR ARRANGEMENT

The disclosure relates to a high-voltage insulator (100) for insulation of a DC conductor of a gas-insulated electrical system, and to a gas-insulated electrical system comprising a high-voltage insulator. The high-voltage insulator (100) comprises an insulator body (50) and an insulator surface (51), wherein the electrical conductivity of the insulator surface (51) is higher than the electrical conductivity of the insulator body (50); and a contacting element (30). The contacting element (30) comprises an insulator side face (31) having a first height (hres) for connecting a predetermined length of the insulator surface (51) to a definite potential, the contacting element (30) further extending by a total width (w) in a width direction away from the insulator surface (51) up to an end face (32). A second height (hend) of the contacting element (30) at the end face (32) is lower than the first height (hres).