| 摘要 |
The invention is related to a coil assembly (22, 42, 72, 92) for a dry high-voltage transformer, comprising at least one coil with hollow cylindrical electrical winding (24, 44, 94) and with taps (104), wherein the coil is surrounded at least on its radial outer surface by a stiff insulation material (26, 46, 96), wherein a tap-changer (28, 52, 100) is casted on the outer surface of the insulation material (26, 46, 96), which is electrically connected to the taps (104), wherein the electrical connection (32, 98) of at least some of the taps (104) is guided at least in part through the insulation material (26, 46, 96). The tap-changer (28, 52, 100) is surrounded by a casting material (30, 48, 102). |
