Air-cooled or air-blast transformer design with low level of leakage field

摘要

A transformer comprising one or more core uprights (1) and two core yokes (3,4) of laminated construction with primary and second windings (2). In order to provide a transformer design features only slight stray or leakage fields, the upper core yoke (3) or the lower core yoke (4) feature expansion (5,6) or (7,8) on wither of their longitudinal sides and which jut out beyond the winding (2) and the additional winding.