COIL ASSEMBLY FOR A DRY TRANSFORMER, METHOD FOR MANUFACTURING A COIL ASSEMBLY AND DRY TRANSFORMER

摘要

A coil assembly for a dry high-voltage transformer, having at least one coil with hollow cylindrical electrical winding and with taps, wherein the coil is surrounded at least on its radial outer surface by stiff insulation material, wherein a tap-changer is casted on the outer surface of the insulation material, which is electrically connected to the taps, wherein the electrical connection of at least some of the taps is guided at least in part through the insulation material. The tap-changer may be surrounded by a casting material.

主权项

1. A coil assembly for a dry high-voltage transformer, the assembly comprising:
a coil including a hollow cylindrical electrical winding and including taps, the coil being surrounded at least on its radial outer surface by a stiff insulation material; a tap-changer, casted on an outer surface of the insulation material, which is electrically connected to the taps, an electrical connection of at least some of the taps is being guided at least in part through the insulation material; and an inlet configured for maintenance of the tap-changer, wherein the tap-changer is surrounded by a casting material, and wherein the tap-changer is arranged at least in part within an encapsulated chasing.