Externally shielded disk windings for transformers

摘要

A disk wound transformer winding employing at least two external electrostatic shields extending axially along the outside of the disk winding for grading the impulse voltage within the winding. The inner external shield closest to the winding is connected to the line terminal and the outer external shield is connected to ground. A substantially linear voltage gradient under impulse conditions is attained by the combination of a disk winding arrangement and a specifically tailored assembly of external shields extending along the outside of the winding.