| 摘要 |
The invention is related to an on-load tap-changer (10, 40, 60, 80) for dry transformers, comprising an electric insulating hollow casing (12, 62) extending around a virtual axis (14, 70), wherein several electric contact sections (16, 18, 20, 22) are foreseen along a path on the inner surface of the hollow casing (12, 62), which are electrically joined through the wall of the hollow casing (12, 62) and a selector contact in the inner of the cylinder which is moveable along the path and that's outer end is selectively connectable with one of the contact sections by a respective movement. Respective cables (32, 42, 68) are foreseen to electrically connect the contact sections (16, 18, 20, 22) from the radial outer side of the hollow casing (12, 62), wherein at least some of the cables (32, 42, 68) comprise a respective surrounding outer insulation (34, 44) at least at their respective connected end. |
