On-load tap changer for dry transformers and dry transformer

An on-load tap-changer for a dry transformer, the tap-changer comprising:

• an electric insulating hollow casing disposed around a virtual axis, the hollow casing including more than one electric contact sections, disposed along a path on an inner surface of the hollow casing and being electrically joined through a wall of the hollow casing;
• and
• a selector contact disposed inside of the casing, the selector contact being moveable along the path, an outer end of the selector contact being selectively connectable with one of the contact sections by a respective movement, along the path,
• wherein respective cables are configured to electrically connect the contact sections from a radial outer side of the hollow casing, and
• wherein at least some of the cables include a respective surrounding outer insulation at least at a respective connected end of the cable.