Surrounding body for a high voltage cable and cable element, which is provided with such a surrounding body

A cable element with a cable section comprising:

• a cable conductor that can be conducted at high-voltage potential;
• an electrically conductive cable shielding,
• a cable insulation arranged between cable conductor and cable shielding, an offset edge separating a shielded and an unshielded area of the cable insulation;
• and
• a surrounding body being placed on the cable section, and including a field control element which comprises:
• a field control element comprising a plurality of sections made of an expandable or shrinkable polymer;
• a filler embedded in the polymer of the field control element comprising a plurality of microvaristors;
• and
• at least one section designed as a hollow truncated cone with an inner surface, which is designed differently than an outer surface of the cable section,
• wherein the inner surface of the hollow truncated cone is designed in such a way that after the surrounding body has been placed on the outer surface of the cable section and fastened to the cable section by expansion or shrinkage, a number of microvaristors per surface unit in the field control element is smaller in a first section of the field control element surrounding an unshielded area of the cable insulation than in a second section of the field control element surrounding the shielded area of the cable insulation;
• wherein the first section of the plurality of field control element sections encloses an offset edge of a layer of the cable shielding and an unshielded area of the cable insulation;
• and the second section connecting to the first section encloses a shielded area of the cable insulation.