Enclosed high-voltage electric line

A substantially horizontally running high-voltage electric line, comprising:

• an enclosure;
• two supporting elements having first ends, each of the two supporting elements including an insulator part;
• a high-voltage electric conductor which is supported inside the enclosure by the two supporting elements and which has at least two boreholes to accommodate the first ends of the two supporting elements,
• wherein each of the two supporting elements includes a metallic sleeve which passes at least partially through a respective borehole of the at least two boreholes and is supported in an area of an edge of the respective borehole, and wherein the sleeve:
• surrounds a portion of the insulator part and includes a stop that limits displacement of the insulator part into the respective borehole,
• is substantially cylindrical, and includes a field control electrode which concentrically surrounds the portion of the insulator part, and
• is partially in direct contact with the insulator part and is widened in an area of the field control electrode so that there is an annular space between the field control electrode and the insulator part, the annular space being substantially shielded by the field electrode from an electric field between the enclosure and the high-voltage electric conductor.